Aerosol generator equipped with a set of airflow control valves

Abstract

The present invention relates to an aerosol generator (102). The device comprises a first cavity (106) configured to receive a first aerosol generating article (116) containing a first aerosol forming substrate. The device comprises a second cavity (108) configured to receive a second aerosol generating article (118) containing a second aerosol forming substrate. The device comprises an air intake (114). The device comprises a first cavity inlet (154) disposed between the air intake and the first cavity. The device comprises a first inlet valve (174). The first inlet valve is configured to be movable between a closed position and an open position. In the closed position, the air intake and the first cavity are not in fluid communication. In the open position, the first cavity is in fluid communication with the air intake via the first cavity inlet. The first inlet valve includes a first biasing means (172) configured to bias the first inlet valve toward the closed position when the first aerosol generating article is not fully inserted into the first cavity. The first inlet valve is configured to be in the open position when the first aerosol forming element is fully inserted into the first cavity. The device includes a second cavity inlet (156) disposed between the air intake and the second cavity. The device includes a second inlet valve (176). The second inlet valve is configured to be movable between a closed position and an open position. In the closed position, the air intake and the second cavity are not in fluid communication. In the open position, the second cavity is in fluid communication with the air intake through the second cavity inlet. The second inlet valve includes a second biasing means configured to bias the second inlet valve toward the closed position when the second aerosol generating article is not fully inserted into the second cavity. The second inlet valve is configured to be in the open position when the second aerosol-forming element is fully inserted into the second cavity.

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 inhalable vapor. Such a device can heat an 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 within 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 that provides improved heating efficiency. It is desirable to provide an aerosol generating system that provides improved aerosol generation. It is desirable to provide an aerosol generating system that provides improved airflow through the system. It is desirable to provide an aerosol generating system that enables improved airflow control. It is desirable to provide an aerosol generating system that provides improved aerosol delivery. It is desirable to provide an aerosol generating device that enables the use of multiple aerosol-forming substrates. It is desirable to provide an aerosol generating system that enables adjustment of the provided user experience to the individual preferences of consumers.

Brief Description of the Drawings

[0004] [Figure 1] FIG. 1 shows an aerosol generating system of the present invention. [Figure 2] Figure 2 shows the layered structure of the components of the aerosol generation system of the present invention. [Figure 3] Figure 3 shows the aerosol generation system of the present invention. [Figure 4] Figure 4 shows details of the intermediate section of Figure 3. [Figure 5] Figure 5 shows the inlet valve of the present invention. [Figure 6] Figure 6 shows the aerosol generation system of the present invention. [Figure 7] Figure 7 shows the aerosol generation system of the present invention. [Figure 8] Figure 8 illustrates the interaction between the mouthpiece and the intermediate section in the control of the inlet valve. [Figure 9] Figure 9 shows the third inlet valve. [Figure 10] Figure 10 shows the aerosol generating device of the present invention. [Figure 11] Figure 11 shows an intermediate section of the apparatus shown in Figure 10. [Figure 12] Figure 12 shows an aerosol generating system comprising the aerosol generating device of Figure 11, with a first aerosol generating article and a second aerosol generating article inserted inside. [Figure 13] Figure 13 shows an aerosol generating system comprising the aerosol generating device of Figure 11 with the first aerosol generating article 116 inserted inside. [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 for receiving an aerosol generating article comprising a first aerosol-forming substrate. The device comprises a second cavity configured to receive a second aerosol generating article comprising a second aerosol-forming substrate. The device comprises an air intake. The device comprises a first cavity inlet disposed between the air intake and the first cavity. The device comprises a first inlet valve. The first inlet valve is configured to be movable between a closed position and an open position. In the closed position, the air intake and the first cavity are not in fluid communication. In the open position, the first cavity is in fluid communication with the air intake through the first cavity inlet. The first inlet valve comprises a first biasing means configured to bias the first inlet valve toward the closed position when the first aerosol generating article is not fully inserted into the first cavity. The first inlet valve is configured to be in the open position when the first aerosol-forming element is fully inserted into the first cavity.

[0006] The apparatus includes a second cavity inlet disposed between the air intake and the second cavity. The apparatus includes a second inlet valve. The second inlet valve is configured to be movable between a closed position and an open position. In the closed position, the air intake and the second cavity are not in fluid communication. In the open position, the second cavity is in fluid communication with the air intake through the second cavity inlet. The second inlet valve includes a second biasing means configured to bias the second inlet valve toward the closed position when the second aerosol generating article is not fully inserted into the second cavity. The second inlet valve is configured to be in the open position when the second aerosol forming element is fully inserted into the second cavity.

[0007] According to one embodiment of the present invention, an aerosol generating device is provided. The device comprises a first cavity configured to receive an aerosol generating article comprising a first aerosol-forming substrate. The device comprises a second cavity configured to receive a second aerosol generating article comprising a second aerosol-forming substrate. The device may also include an air intake. The device may also include a first cavity inlet disposed between the air intake and the first cavity. The device may also include a first inlet valve. The first inlet valve may be configured to be movable between a closed position and an open position. In the closed position, the air intake and the first cavity are not in fluid communication. In the open position, the first cavity can be in fluid communication with the air intake through the first cavity inlet. The first inlet valve may also include a first biasing means configured to bias the first inlet valve toward the closed position if the first aerosol generating article is not fully inserted into the first cavity. The first inlet valve may be configured to be in the open position when the first aerosol-forming element is fully inserted into the first cavity.

[0008] The apparatus may include a second cavity inlet disposed between the air intake and the second cavity. The apparatus may also include a second inlet valve. The second inlet valve may be configured to be movable between a closed position and an open position. In the closed position, the air intake and the second cavity are not in fluid communication. In the open position, the second cavity can be in fluid communication with the air intake through the second cavity inlet. The second inlet valve may include a second biasing means configured to bias the second inlet valve toward the closed position if the second aerosol generating article is not fully inserted into the second cavity. The second inlet valve may be configured to be in the open position when the second aerosol forming element is fully inserted into the second cavity.

[0009] The aerosol generator can heat the aerosol-forming substrate with improved efficiency. The aerosol generator can provide improved airflow. The aerosol generator can provide improved aerosol flow. The aerosol generator can provide improved draw-to-discharge (RTD). The aerosol generator can provide improved aerosol generation. The aerosol generator can provide an improved user experience. The aerosol generator can provide improved airflow characteristics. The aerosol generator can provide improved mixing of ambient air and volatile aerosol-forming substrate. The aerosol generator can provide improved homogeneity of the aerosol. The aerosol generation system can provide more convenient handling for the user. The aerosol generation system can provide an improved user experience tailored to the user's individual preferences. The aerosol generation system can provide a flexible user experience.

[0010] The first cavity may be rectangular 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 second cavity may be rectangular 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.

[0012] The first cavity entrance may be configured as a channel. The second cavity entrance may be configured as a channel.

[0013] 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.

[0014] 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 open end of the first cavity may be a proximal end. The open end of the second cavity may be a proximal end.

[0015] The first aerosol-generating article may be inserted into the first cavity through the first cavity open end. The second aerosol-generating article may be inserted into the second cavity through the second cavity open end.

[0016] The first cavity may include a base facing the open end of the first cavity. The second cavity may include a base facing the open end of the second cavity. The base of the first cavity may be closed except that a first cavity inlet disposed in the base is provided. The base of the second cavity may be closed except that a second cavity inlet disposed in the base is provided. The base of the first cavity may be flat. The base of the second cavity may be flat. The base of the first cavity may be rectangular. The base of the second cavity may be rectangular. The base of the first cavity may be disposed upstream of the first cavity. The base of the second cavity may be disposed upstream of the second cavity. The open end of the first cavity may be disposed downstream of the first cavity. The open end of the second cavity may be disposed downstream of the second cavity.

[0017] 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 long axis direction. The second cavity may have a central axis in the long axis direction. The long axis direction may be a direction extending between the base and the open end along the central axis in the long axis direction. The central axis in the long axis direction of the first cavity may be parallel to the long axis direction axis of the aerosol generating device. The central axis in the long axis direction of the second cavity may be parallel to the long axis direction axis of the aerosol generating device.

[0018] The first cavity inlet may be disposed on the distal side of the first cavity. The first cavity may be disposed downstream of the first cavity inlet. The first cavity inlet may be configured to abut against the first cavity. The first cavity inlet may be configured to abut against the upstream end of the first cavity. The first cavity inlet may be disposed in the base of the first cavity.

[0019] The second cavity inlet may be disposed on the distal side of the second cavity. The second cavity may be disposed downstream of the second cavity inlet. The second cavity inlet may be configured to abut against the second cavity. The second cavity inlet may be configured to abut against the upstream end of the second cavity. The second cavity inlet may be disposed in the base of the second cavity.

[0020] The first inlet valve may control the airflow through the first cavity. In the closed position, the first inlet valve can block the airflow through the first cavity inlet. In the closed position, the first inlet valve can block the airflow from the air intake to the first cavity via the first cavity inlet. In the open position, the first inlet valve can allow airflow through the first cavity inlet. In the open position, the first inlet valve can allow airflow from the air intake to the first cavity via the first cavity inlet.

[0021] The second inlet valve can control the airflow through the second cavity. In the closed position, the second inlet valve can block the airflow through the second cavity inlet. In the closed position, the second inlet valve can block the airflow from the air intake to the second cavity via the second cavity inlet. In the open position, the second inlet valve can allow airflow through the second cavity inlet. In the open position, the second inlet valve can allow airflow from the air intake to the second cavity via the second cavity inlet.

[0022] The first biasing means can hold the first inlet valve in the closed position when there is no aerosol-generating article in the first cavity. By providing the first biasing means, the airflow from the air intake to the first cavity may be blocked when there is no aerosol-forming substrate and / or aerosol-generating article in the first cavity.

[0023] The second biasing means can hold the second inlet valve in the closed position when there is no aerosol-generating article in the second cavity. By providing the second biasing means, the airflow from the air intake to the second cavity may be blocked when there is no aerosol-forming substrate and / or aerosol-generating article in the second cavity.

[0024] The first inlet valve may be at least partially disposed within the first cavity inlet. The second inlet valve may be at least partially disposed within the second cavity inlet.

[0025] The device may include a first airflow channel. The device may also include a first airflow channel inlet located between the air intake and the first airflow channel. The first airflow channel may be planar.

[0026] The first airflow channel may be rectangular 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.

[0027] The first airflow channel may be positioned on the longitudinal axis of the center of the device.

[0028] The first cavity may be located radially outward of the first airflow channel. The second cavity may be located radially outward of the first airflow channel. The first airflow channel may be located between the first cavity and the second cavity.

[0029] The first airflow channel inlet may be located distal to the second airflow channel. The first airflow channel may be located downstream of the first airflow channel inlet. The first airflow channel inlet may be configured to abut against the first airflow channel. The first airflow channel inlet may be configured to abut against the upstream end of the first airflow channel. The first airflow channel inlet may be located at the base of the first airflow channel.

[0030] 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.

[0031] The first airflow channel inlet may be configured as a channel.

[0032] The device may include an edge distribution channel. The distribution channel may be located between the air intake and one or more of the first cavity inlet, the second cavity inlet, and the first airflow channel. One or more of the first cavity inlet, the second cavity inlet, and the first airflow channel can communicate fluidly with the air intake via the air distribution channel when the corresponding inlet valve is open.

[0033] The device may also include a third inlet valve configured to regulate the airflow between the air intake port and the first airflow channel via the first airflow channel inlet.

[0034] The third inlet valve may be configured to be movable between a closed position and an open position. In the closed position, the air intake and the first airflow channel do not need to be in fluid communication. In the open position, the first airflow channel can be in fluid communication with the air intake via the first airflow channel inlet.

[0035] The third inlet valve may include a third biasing means configured to bias the third inlet valve toward the closed position.

[0036] The third inlet valve can control the airflow through the first airflow channel. In the closed position, the third inlet valve can at least partially block the airflow through the first airflow channel. In the closed position, the third inlet valve can at least partially block the airflow from the air intake through the third cavity inlet to the first airflow channel. In the open position, the third inlet valve can allow airflow through the first airflow channel inlet. In the open position, the third inlet valve can allow airflow from the air intake to the first airflow channel through the first airflow channel inlet. The position of the fourth inlet valve can be adjusted gradually.

[0037] A third biasing means can, by default, hold the third inlet valve in the closed position. The third biasing means may also be an actuator that biases the third inlet valve toward the closed position when there is no external stimulus.

[0038] The third inlet valve may be at least partially located within the inlet of the first airflow channel.

[0039] The third inlet valve may be an electronically controlled valve. The third inlet valve may be an electronically operated valve. The third inlet valve can be moved between a closed position and an open position in response to an input electrical signal.

[0040] The device may include at least one electromagnet positioned at the proximal end of the first airflow channel inlet. The device may be configured such that the airflow between the air intake and the first airflow channel via the first airflow channel inlet is regulated by controlling the magnetic interaction between the electromagnet and the third inlet valve.

[0041] At least one electromagnet may be located at the base of the first airflow channel. At least one electromagnet may surround at least a portion of the inlet of the first airflow channel. At least one electromagnet may surround the downstream end of the inlet of the first airflow channel. At least one electromagnet may be located at the downstream end of the first airflow channel.

[0042] One or more of the first biasing means, the second biasing means, and the third biasing means may include a spring. The spring may be a coil spring.

[0043] The first biasing means may include a first spring. The first spring may be a first coil spring. The second biasing means may include a second spring. The second spring may be a second coil spring. The third biasing means may include a third spring. The third spring may be a third coil spring.

[0044] The first biasing means may be located near the first cavity entrance, the second biasing means may be located near the second cavity entrance, or one or both of these may be located.

[0045] The first biasing means may be located near the first cavity inlet. The second biasing means may be located near the second cavity inlet. The third biasing means may be located near the first airflow channel inlet.

[0046] The first biasing means may be disposed in contact with the base of the first cavity. The first biasing means may be disposed in contact with the base of the first cavity. The first biasing means may be disposed adjacent to the downstream end of the entrance to the first cavity.

[0047] The second biasing means may be disposed in contact with the base of the second cavity. The second biasing means may be disposed adjacent to the downstream end of the inlet of the second cavity.

[0048] The third biasing means may be disposed in contact with the base of the first airflow channel. The third biasing means may be disposed adjacent to the downstream end of the inlet of the first airflow channel.

[0049] One or both of the first and second inlet valves may be configured as spring valves.

[0050] The first inlet valve may be configured as a first spring valve. The second inlet valve may be configured as a second spring valve.

[0051] One or more of the first, second, and third inlet valves may include a spring retaining mechanism, a head, and a shaft. The shaft may be disposed between the spring retaining mechanism and the head. The spring retaining mechanism may be configured as a disc. The head may be configured as a tapered head.

[0052] The first inlet valve may include a first spring retaining means, a first head, and a first shaft. The second inlet valve may include a second spring retaining means, a second head, and a second shaft. The third inlet valve may include a third spring retaining means, a third head, and a third shaft.

[0053] The first spring retaining means may be disposed within the first cavity. The first spring retaining means may be disposed at the downstream end of the first cavity inlet. The diameter of the first spring retaining means may be larger than the diameter of the first cavity inlet. The first shaft may be disposed at least partially within the first cavity inlet. The first head may be disposed within the air distribution channel. The first head may be disposed at the upstream end of the first cavity inlet. The diameter of the first head may be larger than the diameter of the first cavity inlet. The first spring retaining means and the first head may be connected by the first shaft. The first spring retaining means may be disposed near the first shaft. The first shaft may be disposed near the first head.

[0054] A second spring retaining means may be disposed within the second cavity. The second spring retaining means may be disposed at the downstream end of the second cavity inlet. The diameter of the second spring retaining means may be greater than the diameter of the second cavity inlet. A second shaft may be disposed at least partially within the second cavity inlet. A second head may be disposed within the air distribution channel. The second head may be disposed at the upstream end of the second cavity inlet. The diameter of the second head may be greater than the diameter of the second cavity inlet. The second spring retaining means and the second head may be connected by a second shaft. The second spring retaining means may be disposed near the second shaft. The second shaft may be disposed near the second head.

[0055] A third spring retaining means may be disposed in the first airflow channel. A third spring retaining means may be disposed at the downstream end of the inlet of the first airflow channel. The diameter of the third spring retaining means may be larger than the diameter of the inlet of the first airflow channel. A third shaft may be disposed at least partially within the inlet of the first airflow channel. A third head may be disposed within the air distribution channel. The diameter of the third head may be larger than the diameter of the inlet of the first airflow channel. The third spring retaining means and the third head may be connected by a third shaft. A third spring retaining means may be disposed near the third shaft. A third shaft may be disposed near the third head.

[0056] The biasing means may be configured to contact the spring retaining means. The spring may be configured to contact the spring retaining means.

[0057] The first biasing means may be configured to abut against the first spring retaining means. The first spring of the first biasing means may be configured to abut against the first spring retaining means. The first biasing means may be configured to abut against the base of the first cavity. The first spring may be configured to abut against the base of the first cavity.

[0058] The second biasing means may be configured to abut against the second spring retaining means. The second spring of the second biasing means may be configured to abut against the second spring retaining means. The second biasing means may be configured to abut against the base of the second cavity. The second spring may be configured to abut against the base of the second cavity.

[0059] The third biasing means may be configured to abut against the third spring retaining means. The third spring of the third biasing means may be configured to abut against the third spring retaining means. The third biasing means may be configured to abut against the base of the first airflow channel. The third spring may be configured to abut against the base of the first airflow channel.

[0060] The first spring may be arranged around the first shaft of the first inlet valve. The second spring may be arranged around the second shaft of the second inlet valve. The third spring may be arranged around the third shaft of the third inlet valve.

[0061] The first spring may be disposed between the first spring retaining means and the first cavity inlet. The second spring may be disposed between the second spring retaining means and the second cavity inlet. The third spring may be disposed between the third spring retaining means and the first airflow channel inlet.

[0062] One or more of the first inlet valve, the second inlet valve, and the third inlet valve may be provided with a valve guide. The valve shaft may be at least partially disposed within the valve guide.

[0063] The valve guide for the first inlet valve may be at least partially disposed within the first cavity inlet. The valve guide for the second inlet valve may be at least partially disposed within the second cavity inlet. The valve guide for the third inlet valve may be at least partially disposed within the first airflow channel inlet.

[0064] Valve guides can potentially improve the accuracy of blocking airflow in the closed position. Using valve guides can also potentially improve the smoothness of the transition between the closed and open positions.

[0065] When the first aerosol generating article is fully inserted into the first cavity, the article may come into contact with the first inlet valve. When the first aerosol generating article is fully inserted into the first cavity, the article may come into contact with the first spring retaining means. When the first aerosol generating article is fully inserted into the first cavity, the article may exert force on the first inlet valve. It may exert force distally. When the first aerosol generating article is fully inserted into the first cavity, the article may exert force on the first spring retaining means. It may exert force distally. When the first aerosol generating article is fully inserted into the first cavity, the article may push the first inlet valve distally. When the first aerosol generating article is fully inserted into the first cavity, the article may push the first spring retaining means toward the downstream end of the first cavity inlet. When the first aerosol generating article is fully inserted into the first cavity, the article can move the first inlet valve from the closed position to the open position. When the first aerosol generating article is fully inserted into the first cavity, the article can push the first inlet valve from the closed position to the open position. When the first aerosol generating article is fully inserted into the first cavity, the article can push the first head away from the distal end of the cavity inlet. When the first aerosol generating article is fully inserted into the first cavity, the article can compress the first biasing means. When the first aerosol generating article is fully inserted into the first cavity, the article may compress the first spring of the first biasing means. When the first aerosol generating article is fully inserted into the first cavity, the article may compress the first spring between the first spring retaining means and the base of the first cavity. A fully inserted first aerosol generating article may hold the first inlet valve in the open position.

[0066] The first biasing means may apply force to the first aerosol generating article. The first biasing means may apply force to the first aerosol generating article in a proximal direction. The first biasing means can push the first aerosol generating article in a proximal direction. The first biasing means may be configured to discharge the first aerosol generating article. The first biasing means may be configured to discharge the first aerosol generating article when it is fully inserted. The first inlet valve may be configured to discharge the first aerosol generating article when it is fully inserted. The first inlet valve can discharge the inserted first aerosol generating article after the user experience has been provided. The first inlet valve may discharge the inserted first aerosol generating article if the user wishes to remove the first aerosol generating article. The first inlet valve can discharge the inserted first aerosol generating article after the first aerosol forming substrate has been consumed. Discharge of the first aerosol generating article by the first inlet valve may improve the user's convenience in handling the aerosol generating system. The user can more easily remove the first aerosol-generating article that has been discharged.

[0067] When the second aerosol generating article is fully inserted into the second cavity, the article may come into contact with the second inlet valve. When the second aerosol generating article is fully inserted into the second cavity, the article may come into contact with the second spring retaining means. When the second aerosol generating article is fully inserted into the second cavity, the article may exert force on the second inlet valve. It may exert force distally. When the second aerosol generating article is fully inserted into the second cavity, the article may exert force on the second spring retaining means. It may exert force distally. When the second aerosol generating article is fully inserted into the second cavity, the article may push the second inlet valve distally. When the second aerosol generating article is fully inserted into the second cavity, the article may push the second spring retaining means toward the downstream end of the second cavity inlet. When the second aerosol generating article is fully inserted into the second cavity, the article can move the second inlet valve from the closed position to the open position. When the second aerosol generating article is fully inserted into the second cavity, the article can push the second inlet valve from the closed position to the open position. When the second aerosol generating article is fully inserted into the second cavity, the article can push the second head away from the distal end of the second cavity inlet. When the second aerosol generating article is fully inserted into the second cavity, the article can compress the second biasing means. When the second aerosol generating article is fully inserted into the second cavity, the article can compress the second spring of the second biasing means. When the second aerosol generating article is fully inserted into the second cavity, the article may compress the second spring between the second spring retaining means and the base of the second cavity. A fully inserted second aerosol generating article may hold the second inlet valve in the open position.

[0068] The second biasing means may apply force to the second aerosol generating article. The second biasing means may apply force to the second aerosol generating article in a proximal direction. The second biasing means can push the second aerosol generating article in a proximal direction. The second biasing means may be configured to discharge the second aerosol generating article. The second biasing means may be configured to discharge the second aerosol generating article when it is fully inserted. The second inlet valve may be configured to discharge the second aerosol generating article when it is fully inserted. The second inlet valve can discharge the inserted second aerosol generating article after the user experience has been provided. The second inlet valve may discharge the inserted second aerosol generating article if the user wishes to remove the second aerosol generating article. The second inlet valve can discharge the inserted second aerosol generating article after the second aerosol forming substrate has been consumed. Discharging the second aerosol generating article by the second inlet valve may improve the user's convenience in handling the aerosol generating system. The user can more easily remove the second aerosol-generating item that has been discharged.

[0069] The apparatus may include a heating arrangement. The heating arrangement may include a first heating element and a second heating element. The first heating element may be configured to abut against a first cavity. The second heating element may be configured to abut against a second cavity. One or both of the first and second heating elements may be planar.

[0070] The first heating element may be rectangular 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. The first heating element may contain perforations. The first heating element may contain angled perforations.

[0071] The second heating element may be rectangular 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. The second heating element may include perforations. The second heating element may include angled perforations.

[0072] The first heating element may be configured to heat the first aerosol-forming substrate and cause at least a portion of the first aerosol-forming substrate to volatilize. The second heating element may be configured to heat the second aerosol-forming substrate and cause at least a portion of the second aerosol-forming substrate to volatilize.

[0073] The first heating element may be disposed between the first cavity and the first airflow channel. The second heating element may be disposed between the second cavity and the first airflow channel. The first heating element may be disposed in contact with the first airflow channel. The second heating element may be disposed in contact with the first airflow channel.

[0074] The first heating element may be aligned with the first airflow channel. The second heating element may be aligned with the first airflow channel. The first heating element may be aligned with the first cavity. The second heating element may be aligned with the second cavity. The first heating element may be positioned radially outward from the first airflow channel. The second heating element may be positioned radially outward from the first airflow channel. The first cavity may be positioned radially outward from the first heating element. The second cavity may be positioned radially outward from the second heating element. The first heating element may be in contact with the first cavity. The second heating element may be in contact with the second cavity. The first heating element may be in contact with the inserted first aerosol generating article. The second heating element may be in contact with the inserted second aerosol generating article.

[0075] The first heating element and the second heating element, or one or both, may each be provided with one or more perforations.

[0076] The first heating element may be configured to fluidly communicate a first cavity with a first airflow channel through one or more perforations in the first heating element. The second heating element may be configured to fluidly communicate a second cavity with a first airflow channel through one or more perforations in the second heating element.

[0077] The first heating element may be a resistance heating element. The second heating element may also be a resistance heating element.

[0078] 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. The second heating element may be configured to heat the second aerosol-forming substrate of the second aerosol-generating article inserted into the first cavity. Alternatively, 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.

[0079] The device may include a second airflow channel. The device may also include a second airflow channel inlet located between the air intake and the second airflow channel. The second airflow channel may be planar.

[0080] The device may also include a fourth inlet valve configured to regulate the airflow between the air intake and the second airflow channel via the second airflow channel inlet.

[0081] The fourth inlet valve may be configured to be movable between a closed position and an open position. In the closed position, the air intake and the second airflow channel do not necessarily have fluid communication. In the open position, the second airflow channel can have fluid communication with the air intake via the second airflow channel inlet.

[0082] A fourth inlet valve may be at least partially located within the second airflow channel inlet.

[0083] The fourth inlet valve may be an electronically controlled valve.

[0084] The device may include at least one electromagnet positioned at the proximal end of the second airflow channel inlet. The device may be configured such that the airflow between the air intake and the second airflow channel via the second airflow channel inlet is regulated by controlling the magnetic interaction between the electromagnet and the third inlet valve.

[0085] The second airflow channel may be rectangular 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.

[0086] The second airflow channel may have an open end. The open end of the second airflow channel may be located at the downstream end of the second airflow channel.

[0087] The first airflow channel may have a base facing the open end of the first airflow channel. The second airflow channel may have a base facing the open end of the second airflow channel. The base of the first airflow channel may be closed except that a first airflow channel inlet is provided at the base. The base of the second airflow channel may be closed except that a second airflow channel inlet is provided at the base. The base of the first airflow channel may be flat. The base of the second airflow channel may be flat. The base of the first airflow channel may be rectangular. The base of the second airflow channel may be rectangular. The base of the first airflow channel may be located upstream of the first airflow channel. The base of the second airflow channel may be located upstream of the second airflow channel. The open end of the first airflow channel may be located downstream of the first airflow channel. The open end of the second airflow channel may be located downstream of the second airflow channel.

[0088] The first airflow channel may have an elongated extension. The second airflow channel may have an elongated extension. The first airflow channel may have a central axis in the longitudinal direction. The second airflow channel may have a central axis in the longitudinal direction.

[0089] The second airflow channel inlet may be located distal to the second airflow channel. The second airflow channel may be located downstream of the second airflow channel inlet. The second airflow channel inlet may be configured to abut against the second airflow channel. The second airflow channel inlet may be configured to abut against the upstream end of the second airflow channel. The second airflow channel inlet may be located at the base of the second airflow channel.

[0090] The second airflow channel inlet may be configured as a channel.

[0091] The distribution channel may be located between the air intake and one or more of the first cavity inlet, the second cavity inlet, the first airflow channel, and the second airflow channel. One or more of the first cavity inlet, the second cavity inlet, the first airflow channel, and the second airflow channel may be in fluid communication with the air intake via the air distribution channel when the corresponding inlet valve is open.

[0092] The fourth inlet valve may include a fourth biasing means configured to bias the fourth inlet valve toward the closed position.

[0093] The fourth inlet valve can control the airflow through the second airflow channel. In the closed position, the fourth inlet valve can at least partially block the airflow through the second airflow channel. In the closed position, the fourth inlet valve can at least partially block the airflow from the air intake through the fourth cavity inlet to the second airflow channel. In the open position, the fourth inlet valve can allow airflow through the second airflow channel inlet. In the open position, the fourth inlet valve can allow airflow from the air intake to the second airflow channel through the second airflow channel inlet. The position of the fourth inlet valve can be adjusted gradually.

[0094] The fourth biasing means can, by default, hold the fourth inlet valve in the closed position. The fourth biasing means may also be an actuator that biases the fourth inlet valve toward the closed position when there is no external stimulus.

[0095] The fourth inlet valve may be an electronically operated valve. The fourth inlet valve can be moved between a closed position and an open position in response to an input electrical signal.

[0096] The device may include at least one electromagnet positioned at the proximal end of the second airflow channel inlet. The device may be configured such that the airflow between the air intake and the second airflow channel via the second airflow channel inlet is regulated by controlling the magnetic interaction between the electromagnet and the fourth third inlet valve.

[0097] At least one electromagnet may be located at the base of the second airflow channel. At least one electromagnet may surround at least a portion of the inlet of the second airflow channel. At least one electromagnet may surround the downstream end of the inlet of the second airflow channel. At least one electromagnet may be located at the downstream end of the second airflow channel.

[0098] The fourth biasing means may include a fourth spring. The fourth spring may be a fourth coil spring. The fourth biasing means may include a fourth spring. The fourth spring may be a fourth coil spring. The fourth biasing means may include a fourth spring. The fourth spring may be a fourth coil spring.

[0099] The fourth biasing means may be located near the inlet of the second airflow channel.

[0100] The fourth biasing means may be disposed in contact with the base of the second airflow channel. The fourth biasing means may be disposed adjacent to the downstream end of the inlet of the second airflow channel.

[0101] The fourth inlet valve may comprise a fourth spring retaining means, a fourth shaft, and a fourth shaft. The fourth spring retaining means may be disposed in the second airflow channel. The fourth spring retaining means may be disposed at the downstream end of the inlet of the second airflow channel. The diameter of the fourth spring retaining means may be greater than the diameter of the inlet of the second airflow channel. The fourth shaft may be disposed at least partially in the inlet of the second airflow channel. The fourth head may be disposed in the air distribution channel. The diameter of the fourth head may be greater than the diameter of the inlet of the second airflow channel. The fourth spring retaining means and the fourth head may be connected by a fourth shaft. The fourth spring retaining means may be disposed near the fourth shaft. The fourth shaft may be disposed near the fourth head.

[0102] The fourth biasing means may be configured to abut against the fourth spring retaining means. The fourth spring of the fourth biasing means may be configured to abut against the fourth spring retaining means. The fourth biasing means may be configured to abut against the base of the second airflow channel. The fourth spring may be configured to abut against the base of the second airflow channel.

[0103] A fourth spring may be disposed around the fourth shaft of the fourth inlet valve. The fourth spring may be disposed between the fourth spring retaining means and the second airflow channel inlet.

[0104] The fourth inlet valve may be provided with a valve guide. The fourth shaft of the fourth inlet valve may be at least partially disposed within the valve guide of the fourth inlet valve. The valve guide of the fourth inlet valve may be at least partially disposed within the second airflow channel inlet.

[0105] The first heating element may be configured to contact the first airflow channel. The second heating element may be configured to contact the second airflow channel. The first heating element may be configured to fluidly communicate the first cavity with the first airflow channel through one or more perforations in the first heating element. The second heating element may be configured to fluidly communicate the second cavity with the second airflow channel through one or more perforations in the second heating element.

[0106] The heating arrangement may include a first induction coil. The heating element may include a first planar induction coil.

[0107] The first induction coil may have a rectangular cross-section. The first induction coil may be flat. The first induction coil may be rectangular in shape.

[0108] The first planar induction coil may be configured to abut against the first cavity. The first planar induction coil may be aligned with 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 parallel to the first airflow channel.

[0109] The first planar induction coil may be equipped with a shield. The shield may be an electromagnet shield. The electromagnetic shield can at least partially shield the rest of the device from the electromagnetic field generated by the first induction coil. The shield may be a thermal shield. The thermal shield can prevent a user holding the device from being burned by the heat generated by one or more of the first and second heat sources.

[0110] 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.

[0111] 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.

[0112] The first planar induction coil may be sealed. The first planar induction coil may be installed in the housing of the device.

[0113] The first induction coil may be positioned in contact with the first cavity and the second cavity.

[0114] The heating system may include a second induction coil. The heating system may include a second planar induction coil.

[0115] The first induction coil may be positioned in contact with the first cavity. The second induction coil may be positioned in contact with the second cavity.

[0116] The second induction coil may have a rectangular cross-section. The second induction coil may be flat. The second induction coil may be rectangular in shape.

[0117] The second planar induction coil may be configured to abut against the second cavity. The second planar induction coil may be aligned with 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.

[0118] The second planar induction coil may be equipped with a shield. The shield may be an electromagnet shield. The electromagnetic shield can at least partially shield the rest of the device from the electromagnetic field generated by the second induction coil. The shield may be a thermal shield. The thermal shield can prevent a user holding the device from being burned by the heat generated by one or more of the first and second heat sources.

[0119] 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 inductive heating element. The second heating element may be a second perforated inductive heating element.

[0120] 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.

[0121] The second planar induction coil may be sealed. The second planar induction coil may be mounted on the housing wall of the device.

[0122] The device may be equipped with a removable mouthpiece.

[0123] The device may include a main unit that comprises one or more of the following: a controller and a power supply.

[0124] The mouthpiece may include a housing. The mouthpiece is removablely attachable to the device. The mouthpiece may be in fluid communication with a first airflow channel via an open end of the first airflow channel. The mouthpiece may be in fluid communication with a second flow path via an open end of the second airflow channel. The mouthpiece may be in fluid communication with a first cavity via an open end of the first cavity. The mouthpiece may be in fluid communication with a second cavity via an open end of the second cavity. The mouthpiece may include an aerosol outlet. The user can inhale an aerosol from the aerosol outlet. The aerosol outlet may be in fluid communication with one or more of the first airflow channel, the second flow path, the first cavity, and the second cavity.

[0125] The mouthpiece may include a chamber. The chamber may be in fluid communication with one or more of the following: a first airflow channel, a second flow path, a first cavity, and a second cavity. The chamber may be in fluid communication with one or more of the following: a first airflow channel via the open end of the first airflow channel, a second flow path via the open end of the second airflow channel, a first cavity via the open end of the first cavity, and a second cavity via the open end of the second cavity. The chamber may be in fluid communication with an aerosol outlet. The airflow from one or more of the following: a first cavity, a second cavity, a first airflow channel, and a second airflow channel may be mixed within the chamber.

[0126] The mouthpiece may be located downstream of one or more of the first airflow channel, the second flow path, 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 apparatus. The mouthpiece may be a hinged mouthpiece. The chamber may be a cooling chamber. One or both of the vaporized 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 airflows from one or more of the first cavity, the second cavity, the first airflow channel, and the second airflow channel may be mixed inside the chamber. A homogenized mixture may be obtained.

[0127] The device may include a main unit. The main unit may include a controller. The main unit may include a power supply. The power supply may be a battery. The main unit may include one or more of the following: a heating element, a first cavity, a second cavity, a first airflow channel, and a second flow path. Alternatively, one or more of the heating element, the first cavity, the second cavity, the first airflow channel, and the second airflow channel may be located in an intermediate section. The main unit may be configured to be detachably attached to the mouthpiece. The main unit may include a housing.

[0128] 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.

[0129] The mouthpiece may be removed from the main body, and one or both of the first aerosol generating article and the second aerosol generating article may be inserted.

[0130] The intermediate section may include a housing. The main body may be configured to be detachably attached to the downstream 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.

[0131] By providing a removable mouthpiece, a removable intermediate section, and a removable body, manufacturers can upgrade each component one at a time. By providing a removable mouthpiece, a removable intermediate section, and a removable body, accessibility to one or both of the first and second cavities can be improved.

[0132] The length of the main body may be between 30 mm and 70 mm. The width of the main body may be between 12 mm and 35 mm. The height of the main body may be between 5 mm and 15 mm.

[0133] The length of the intermediate section may be between 20 mm and 45 mm. The width of the intermediate section may be between 12 mm and 35 mm. The height of the intermediate section may be between 5 mm and 15 mm.

[0134] The length of the mouthpiece may be between 15 mm and 40 mm. The width of the mouthpiece may be between 12 mm and 35 mm. The height of the mouthpiece may be between 5 mm and 15 mm.

[0135] The first biasing means may be configured to apply an expulsion force to the first aerosol generating article in a proximal direction.

[0136] The second biasing means may be configured to apply a proximal discharge force to the second aerosol generating article.

[0137] The mouthpiece may be configured to apply a distal force to the first aerosol generating article inserted into the first cavity, against the biasing force of the first biasing means, thereby moving the first inlet valve from a closed position to an open position.

[0138] The mouthpiece may be configured to hold the first aerosol generating article fully inserted into the first cavity. The mouthpiece may be configured to counteract the force applied to the inserted first aerosol generating article by the first biasing means. When the mouthpiece is attached to the device and the first aerosol generating article is inserted into the first cavity, the mouthpiece may be configured to hold the first inlet valve in the open position.

[0139] The mouthpiece may be equipped with a first pressing means. The first pressing means may include a first projection of the housing of the mouthpiece. The first pressing means may be configured to partially or completely insert the first aerosol generating article into the first cavity. The first pressing means may be configured to press the inserted first aerosol generating article against the biasing force of the first biasing element. The first pressing means may be configured to move the first inlet valve from a closed position to an open position by pressing the partially inserted first aerosol generating article. The first pressing means may be configured to apply a distal force to the first aerosol generating article inserted into the first cavity. The first pressing means may be configured to engage with the partially or completely inserted first aerosol generating article if the mouthpiece is attached to one or both of the intermediate section and the body. The first pressing means may be configured to apply force to the fully inserted first aerosol-generating article, holding the first inlet valve in the open position. The first projection of the mouthpiece housing may be configured to fully or partially engage with the first inserted aerosol-forming substrate. The first projection of the mouthpiece housing may be configured to fully or partially engage with the first inserted aerosol-generating article.

[0140] The first pressing means can move between a first position and a second position. In the first position, the mouthpiece may be at least partially removed from the device. In the first position, the first pressing means may be configured to be disengaged from the first aerosol generating article. In the first position, the first inlet valve may be configured to be in the closed position.

[0141] In the second position, the mouthpiece may be fully mounted to the device. In the second position, the mouthpiece may be configured to abut against the proximal end of one of the intermediate section and the main body. In the second position, the first inlet valve may be configured to be in the open position. In the second position, the first pressing means may be configured to engage with the inserted aerosol generating article. In the second position, the first pressing means may be configured to push the first aerosol generating article distally. In the second position, the first aerosol generating article may be configured to engage with the first inlet valve. In the second position, the first aerosol generating article may be configured to push the first inlet valve distally.

[0142] By moving the first pressing means from the first position to the second position, the first aerosol-generating article can be completely inserted into the first cavity. By moving the pressing means from the second position to the first position, the first aerosol-generating article can be discharged from the first cavity.

[0143] The mouthpiece may be configured to apply a distal force to the second aerosol generating article inserted into the second cavity, against the biasing force of the second biasing means, as a result, the second inlet valve moves from the closed position to the open position.

[0144] The mouthpiece may be configured to hold the second aerosol-generating article fully inserted into the second cavity. The mouthpiece may be configured to counteract the force applied to the inserted second aerosol-generating article by the second biasing means. When the mouthpiece is attached to the device and the second aerosol-generating article is inserted into the second cavity, the mouthpiece may be configured to hold the second inlet valve in the open position.

[0145] The mouthpiece may be equipped with a second pressing means. The second pressing means may be provided with a second projection of the mouthpiece housing. The second pressing means may be configured to partially or completely insert the second aerosol generating article into the second cavity. The second pressing means may be configured to push the inserted second aerosol generating article against the biasing force of the second biasing element. The second pressing means may be configured to move the second inlet valve from a closed position to an open position by pushing the partially inserted first aerosol generating article. The second pressing means may be configured to apply a distal force to the second aerosol generating article inserted into the second cavity. The second pressing means may be configured to engage with the partially or completely inserted second aerosol generating article when the mouthpiece is attached to one or both of the intermediate section and the body. The second pressing means may be configured to apply force to the fully inserted second aerosol-generating article, thereby holding the second inlet valve in the open position. The second projection of the mouthpiece housing may be configured to fully or partially engage with the second inserted aerosol-forming substrate.

[0146] The second pressing means can move between the first and second positions. In the first position, the mouthpiece may be at least partially removed from the device. In the first position, the second pressing means may be configured to disengage from the second aerosol generating article. In the first position, the second inlet valve may be configured to be in the closed position.

[0147] In the second position, the mouthpiece may be fully mounted to the device. In the second position, the mouthpiece may be configured to abut against one of the proximal ends of the intermediate section and the main body. In the second position, the second inlet valve may be configured to be in the open position. In the second position, the second pressing means may be configured to engage with the inserted aerosol generating article. In the second position, the second pressing means may be configured to push the second aerosol generating article distally. In the second position, the second aerosol generating article is configured to engage with the second inlet valve. In the second position, the second aerosol generating article may be configured to push the second inlet valve distally.

[0148] By moving the second pressing means from the first position to the second position, the second aerosol-generating article can be completely inserted into the second cavity. By moving the pressing means from the second position to the first position, the second aerosol-generating article can be discharged from the second cavity.

[0149] One or both of the first and second cavities may be planar.

[0150] The first aerosol-generating article may be inserted into the first cavity through the first cavity inlet. The second aerosol-generating article may be inserted into the second cavity through the second cavity inlet.

[0151] 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.

[0152] One or both of the first and second airflow channels may have a length of 7 to 21 millimeters. One or both of the first and second airflow channels may have a width of 7 to 17 millimeters. One or both of the first and second airflow channels may have a height of 1.5 to 3.5 millimeters.

[0153] The first induction coil may be positioned on the longitudinal axis of the center of the device. The first cavity may be configured to abut against the first induction coil. The second cavity may be configured to abut against the first induction coil. The first induction coil may be positioned between the first cavity and the second cavity. The first induction coil may be sandwiched between the first cavity and the second cavity.

[0154] The first heating element may be disposed in contact with the first cavity. The first heating element may be in contact with the first cavity. The first heating element may be in contact with the first aerosol generating article inserted into the first cavity. The first heating element may be configured to heat the first aerosol generating substrate. The second heating element may be disposed in contact with the second cavity. The second heating element may be in contact with the second cavity. The second heating element may be in contact with the aerosol generating article inserted into the second cavity. The second heating element may be configured to heat the second aerosol generating substrate.

[0155] The first airflow channel may be disposed in contact with the first heating element. The first heating element may be disposed between the first cavity and the first airflow channel. The second airflow channel may be disposed in contact with the second heating element. The second heating element may be disposed between the second cavity and the second airflow channel.

[0156] The first airflow channel may be in fluid communication with the first cavity through a perforation of the first heating element. The second airflow channel may be in fluid communication with the second cavity through a perforation of the second heating element.

[0157] The first induction coil may be configured to heat the first and second heating elements. The first induction coil may also be configured to generate an alternating magnetic field that penetrates the first and second heating elements.

[0158] In any embodiment, the apparatus may include a first cavity configured to receive a first aerosol-generating article comprising a first aerosol-forming substrate. The apparatus may also include an air intake. The apparatus may also include a first cavity inlet disposed between the air intake and the first cavity. The apparatus may also include a first inlet valve. The first inlet valve may be configured to be movable between a closed position and an open position. In the closed position, the air intake and the first cavity are not in fluid communication. In the open position, the first cavity can be in fluid communication with the air intake through the first cavity inlet. The first inlet valve may include a first biasing means configured to bias the first inlet valve toward the closed position if the first aerosol-generating article is not fully inserted into the first cavity. The first inlet valve may be configured to be in the open position when the first aerosol-forming element is fully inserted into the first cavity. Any embodiment may not include a second cavity.

[0159] The device may include a first resistance heating element and a second resistance heating element. A first cavity may be disposed between the first resistance heating element and the second resistance heating element. The first resistance heating element may be configured to abut against the first cavity. The second resistance heating element may be configured to abut against the first cavity. A first airflow channel may be configured to abut against the first resistance heating element. The first airflow channel may be disposed radially outward from the first resistance heating element. A second airflow channel may be configured to abut against this second resistance heating element. The second airflow channel may be disposed radially outward from the second resistance heating element.

[0160] In a second aspect of the present invention, an aerosol generating system is provided, comprising an aerosol generating device described herein and a first aerosol generating article containing a first aerosol forming substrate. The system may also include a first planar aerosol generating article.

[0161] One embodiment of the present invention provides an aerosol generating system which may comprise an aerosol generating device described herein and a first aerosol generating article comprising a first aerosol forming substrate.

[0162] One or both of the first aerosol generating article and the first aerosol forming substrate may be porous.

[0163] The first aerosol generating article may be configured to allow airflow through the first aerosol generating article. The first aerosol forming substrate may be configured to allow airflow through the first aerosol forming substrate.

[0164] As used herein, a “porous” element can be an element through which air can pass when the applied pressure drop (suction resistance) is in the range of 80 to 130 mmH2O.

[0165] The first aerosol generating substrate may be a first planar aerosol generating substrate.

[0166] Planar aerosol-generating articles can be manufactured more efficiently. Planar aerosol-generating articles may also be compact. Planar aerosol-generating articles can be heated with improved efficiency.

[0167] The first aerosol generating article may be rectangular in 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 generating article may have a flat cylindrical shape. The first aerosol generating article may have an elliptical cross-section. The first aerosol generating article may be coin-shaped.

[0168] The first aerosol-forming substrate may be rectangular 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.

[0169] The first aerosol generating article may be configured to slide within the first cavity.

[0170] The system may include a second aerosol-generating article containing a second aerosol-forming substrate. The system may also include a second planar aerosol-generating article.

[0171] One or both of the second aerosol generating article and the second aerosol forming substrate may be porous.

[0172] The second aerosol generating article may be configured to allow airflow through the second aerosol generating article. The second aerosol forming substrate may be configured to allow airflow through the second aerosol forming substrate.

[0173] The second aerosol generating article may be rectangular 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 generating article may have a flat cylindrical shape. The second aerosol generating article may have an elliptical cross-section. The second aerosol generating article may be coin-shaped.

[0174] The second aerosol-forming substrate may be rectangular in shape. The second aerosol-forming substrate may have a rectangular cross-section. The second aerosol-forming substrate may be flat. The first aerosol-forming substrate may be cylindrical. The portion of the second aerosol-forming substrate may have a flat cylindrical shape. The second aerosol-forming substrate may have an elliptical cross-section. The second aerosol-forming substrate may be coin-shaped.

[0175] The second aerosol-generating article may be configured to slide within the second cavity.

[0176] 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.

[0177] The first aerosol-forming substrate may be configured to be the same as the second aerosol-forming substrate. The first aerosol-generating article may be configured to be the same as the second aerosol-generating article.

[0178] The first aerosol-generating article may be molded to closely conform to the shape of the first cavity. The second aerosol-generating article may be molded to closely conform to the shape of the second cavity.

[0179] One or both of the first aerosol-forming substrate and the first aerosol-generating article may be configured to move the first inlet valve from a closed position to an open position.

[0180] One or both of the second aerosol-forming substrate and the second aerosol-generating article may be configured to move the second inlet valve from a closed position to an open position.

[0181] The first aerosol generating article may be configured to provide a first user experience. The second aerosol generating article may be configured to provide a second user experience. The first user experience may differ from the second user experience. To provide the first experience, power may be supplied to a first induction coil or a first resistance heating element. The first heating profile may be supplied to the first induction coil or a first resistance heating element. The first heating profile may be adapted to the characteristics of the first aerosol generating article. To provide the second experience, power may be supplied to a second induction coil or a second resistance heating element. The 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 aerosol generating article.

[0182] 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 resistive 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 to one or both of the first and second heating profiles. A third user experience may be adapted to the individual preferences of the consumer.

[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 first heating profile may be adapted to the characteristics of the first aerosol-generating article. The second heating profile may be adapted to the characteristics of the second aerosol-generating article.

[0185] The shape of the first aerosol-generating article may differ from the shape of the second aerosol-generating article.

[0186] By providing first and second articles of different shapes, users can easily distinguish between the first and second articles. By providing articles of different shapes and correspondingly 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 can be reduced.

[0187] The first aerosol-forming substrate may form part of the first aerosol-generating article. The second aerosol-forming substrate may form part of the second aerosol-generating article. The first aerosol-generating article may be molded to closely conform to the shape of the first cavity. The second aerosol-generating article may be molded to closely conform to the shape of the second cavity.

[0188] 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.

[0189] 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.

[0190] 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 first induction coil independently 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.

[0191] The controller may be configured to supply power to a first resistive heating element. The controller may be configured to supply power to a 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.

[0192] The controller may be configured to actuate a third inlet valve. The controller may be configured to regulate the airflow through the first airflow channel inlet. The controller may be connected to an electromagnet located at the proximal end of the first airflow channel inlet. The controller may be configured to supply power to the electromagnet. The controller may be configured to adjust the magnetic field of the electromagnet. The controller may be configured to adjust the interaction strength between the electromagnet and the first inlet valve. The controller may be configured to control the strength of the magnetic field of the electromagnet by supplying power to the electromagnet.

[0193] The controller may be configured to actuate a fourth inlet valve. The controller may be configured to regulate the airflow through the second airflow channel inlet. The controller may be connected to an electromagnet located at the proximal end of the second airflow channel inlet. The controller may be configured to supply power to the electromagnet. The controller may be configured to adjust the magnetic field of the electromagnet. The controller may be configured to adjust the interaction strength between the electromagnet and the fourth inlet valve. The controller may be configured to control the strength of the magnetic field of the electromagnet by supplying power to the electromagnet.

[0194] The present invention allows users to flexibly adapt the user experience. For example, a 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, if a user experience with such a first characteristic is desired. Alternatively, a 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, if a user experience with such a second characteristic is desired. Or, if a user desires a combination of the first and second characteristics, a user may insert both the first and second aerosol generating articles. The ratio of the first to the second characteristics may be adjusted by adapting the heating profiles of the first and second heating elements. For example, if a user experience primarily with the first characteristic is desired, the power intensity and / or length of the power supply to the first induction coil or first resistance heating element may be increased, while the power intensity and / or length of the power supply to the second induction coil or second resistance heating element may be decreased.

[0195] One or both of the first and second inlet valves can improve user convenience. One or both of the first and second inlet valves can help remove used aerosol-generating articles from the device by ejecting the used articles when the mouthpiece is removed from the device.

[0196] A third and a fourth inlet valve can enable improvements to the air and aerosol flow through the device and to the user experience. The third inlet valve may be used to adjust the characteristics of the airflow through the first airflow channel. The fourth inlet valve may be used to adjust the characteristics of the airflow through the second airflow channel. Such characteristics may be the velocity or volume of the airflow. The characteristics of the airflow may affect the characteristics of the aerosols formed. For example, if an increase in airflow through the first airflow channel is desired, the third inlet valve may be opened or even opened further. If a decrease in airflow through the first airflow channel is desired, the third inlet valve may be closed or even closed further.

[0197] The valve of the present invention can improve the flexibility of the user experience. The valve allows the user to adjust the airflow through the device depending on the presence of an inserted aerosol-generating article. By inserting an aerosol-generating article into the device, the valve of the corresponding cavity can be opened, allowing airflow through such cavity and aerosol-generating article. The volatile aerosol-forming substrate of the aerosol-generating article can be carried along with such airflow through at least a portion of the device. When no aerosol-generating article is present in a particular cavity, the corresponding cavity inlet valve is closed by default so as to block airflow from the air intake through the corresponding cavity.

[0198] If the user chooses to insert the first aerosol generating article, the insertion of the first aerosol generating article opens the valve of the first cavity, resulting in airflow through the first cavity and the first aerosol generating article. Furthermore, if the user does not insert the aerosol generating article into the second cavity, the second inlet valve is closed, and as a result, airflow from the air intake through the second cavity is blocked. Aerosol dilution can be reduced. Undesirable airflow through the empty second cavity can be avoided.

[0199] In contrast, if the user chooses to insert a second aerosol-generating article into the second cavity, the second inlet valve opens in the presence of the inserted second aerosol-generating article, thereby allowing airflow through the second cavity and the second aerosol-generating article.

[0200] During use, the consumer may insert one or both of the first and second aerosol-generating articles into the device, depending on the desired individual user experience. The user may wear a mouthpiece on the device. The inlet valve of the cavity into which the article is inserted is opened when the corresponding article pushes the corresponding inlet valve. The inlet valve of the cavity into which no article is inserted is closed by a biasing means. The user can inhale air through the air intake of the device by holding the mouthpiece in their mouth and sucking. Airflow can flow through the cavity containing the inserted article through the open cavity inlet. Airflow cannot flow through the cavity not containing the inserted article because the corresponding cavity inlet is closed. The electronically operated valves of one or both of the first and second airflow channels may be adjusted according to the desired user experience. A heating element in contact with the inserted article can heat the aerosol-forming substrate of such article, causing at least a portion of such substrate to volatilize. The heating profile delivered by the heating element can be adjusted independently, taking into account the characteristics of the article being heated by the corresponding heating element. Some of the volatile substrate may flow directly into the mouthpiece chamber through the open end of the corresponding cavity. Some of the volatile substrate may flow into the airflow channel in contact with the heating element. Depending on whether the inlet valve of the airflow channel is open, and to what extent, it may mix with the airflow entering the corresponding airflow channel through the airflow channel inlet. The mixture may enter the mouthpiece chamber through the open end of the corresponding airflow channel. Various airflows into the mouthpiece chamber can be mixed within the mouthpiece chamber. Such a mixture can be cooled to produce an aerosol. The aerosol can be inhaled by the user through the mouthpiece.

[0201] 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 and proximal ends of the device. The longitudinal axis of an article may extend between the distal and proximal ends of the article.

[0202] 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.

[0203] "Proximal direction" may refer to the direction of the longitudinal axis of the aerosol generator, extending from the end of the device opposite the nozzle end toward the nozzle end of the device.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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 the first and second heating elements, in order to control the power supply to one or both of the first and second heating elements.

[0208] The aerosol generator may include 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 second power source may also be an electric double-layer capacitor. 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 sufficient capacity 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 sufficient capacity to provide a predetermined number of fume extractions or discontinuous operation of the heating element.

[0209] 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 a first aerosol generating article received in the first cavity. The second cavity may have a shape corresponding to the shape of a 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 second cavity may have an inner diameter corresponding to the outer diameter of the second aerosol generating article.

[0210] 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, stainless steel-based superalloys, Timetal®, and iron-manganese-aluminum alloys. In composite materials, the electrical resistive material may be embedded in, sealed in, or coated with an insulating material, depending on the required energy transfer dynamics and external physicochemical properties.

[0211] The heating arrangement may be an induction heating arrangement. The induction heating arrangement may include a first induction coil and a first induction heating element. The induction heating arrangement may include a second induction coil and a second induction heating element. The induction heating arrangement may include a first induction coil, a second induction coil, a first induction heating element, and a second induction heating element.

[0212] One or both of the first and second heating elements may be susceptors. One or 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 can generate an alternating magnetic field in the first cavity. The first induction coil can generate an alternating magnetic field penetrating the first heating element. The second induction coil can generate an alternating magnetic field in the second cavity. The second induction coil can generate an alternating magnetic field penetrating the second heating element.

[0213] If one or both of the first and second heating elements are conductive, eddy currents are usually induced by an alternating magnetic field. If one or both of the first and second heating elements are magnetic, another effect that 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. This is because the directions of these magnetisms align 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. Generally, all these changes occurring at or below the nanoscale within one or both of the first and second heating elements are called hysteresis loss because these changes 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, when penetrated by an alternating magnetic field, is the only means by which one or both of the first and second heating elements will be heated. 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. The first heating element is heated by the alternating magnetic field generated by the first induction coil, and its heat is transferred to the first aerosol-forming substrate. The second heating element is heated by the alternating magnetic field generated by the second induction coil, and its heat is transferred to the second aerosol-forming substrate. Heat transfer may also be mainly by heat conduction. This type of heat transfer is most effective when one of the first and second heat-generating elements is in close thermal contact with the aerosol-forming substrate.

[0214] 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.

[0215] 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.

[0216] 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.

[0217] [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.

[0218] Example 1: An aerosol generator comprising: a first cavity configured to receive a first aerosol generating article containing a first aerosol forming substrate; a second cavity configured to receive a second aerosol generating article containing a second aerosol forming substrate; an air intake port; a first cavity inlet disposed between the air intake port and the first cavity; and a first inlet valve, wherein the first inlet valve is configured to be movable between a closed position and an open position, in the closed position fluid communication between the air intake port and the first cavity is blocked, in the open position the first cavity is in fluid communication with the air intake port via the first cavity inlet, and the first biasing means is configured to bias the first inlet valve toward the closed position if the first aerosol generating article is not fully inserted into the first cavity, and the first aerosol type Aerosol generating device comprising: a first inlet valve configured such that the first inlet valve is in the open position when an aerosol-forming element is fully inserted into the first cavity; a second cavity inlet disposed between an air intake and a second cavity; and a second inlet valve configured such that the second inlet valve is movable between a closed position and an open position, in the closed position fluid communication between the air intake and the second cavity is blocked, in the open position the second cavity is in fluid communication with the air intake through the second cavity inlet, and a second biasing means configured such that the second inlet valve biases the second inlet valve toward the closed position when a second aerosol-forming article is not fully inserted into the second cavity; and the second inlet valve configured such that the second inlet valve is in the open position when a second aerosol-forming element is fully inserted into the second cavity. Example 2: The aerosol generator according to Embodiment 1, wherein a first inlet valve is at least partially disposed within a first cavity inlet, and a second inlet valve is at least partially disposed within a second cavity inlet. Example 3: An aerosol generator according to either Example 1 or 2, wherein the device comprises a first airflow channel, and the device comprises a first airflow channel inlet disposed between an air intake and the first airflow channel, preferably the first airflow channel being planar. Example 4: The aerosol generator according to Embodiment 3, further comprising a third inlet valve configured to regulate the airflow between the air intake port and the first airflow channel via the first airflow channel inlet. Example 5: The aerosol generator according to Embodiment 4, wherein a third inlet valve is configured to be movable between a closed position and an open position, in the closed position, fluid communication between the air intake and the first airflow channel is blocked, and in the open position, the first airflow channel is in fluid communication with the air intake through the first airflow channel inlet. Example 6: The aerosol generator according to either Example 4 or 5, wherein a third inlet valve is at least partially disposed within the inlet of the first airflow channel. Example 7: The aerosol generator according to any one of Examples 4 to 6, wherein the third inlet valve is an electronically controlled valve. Example 8: The aerosol generator according to Embodiment 7, wherein the device comprises at least one electromagnet disposed at the proximal end of a first airflow channel inlet, and the device is configured such that the airflow between the air intake port and the first airflow channel via the first airflow channel inlet is regulated by controlling the magnetic interaction between the electromagnet and a third inlet valve. Example 9: The aerosol generator according to any one of Examples 1 to 8, wherein one or more of the first biasing means, the second biasing means, and the third inlet valve comprises a spring, preferably a coil spring. Example 10: An aerosol generator according to any one of Examples 1 to 9, wherein a first biasing means is disposed near a first cavity inlet, and a second biasing means is disposed near a second cavity inlet. Example 11: An aerosol generator according to any one of Examples 1 to 10, wherein one or both of the first inlet valve and the second inlet valve are configured as spring valves. Example 12: An aerosol generator according to any one of Examples 1 to 11, comprising a spring retaining means preferably configured as a disc, a head preferably configured as a tapered head, and a shaft, wherein the shaft is disposed between the spring retaining means and the head. Example 13: The aerosol generator according to Embodiment 12, wherein a biasing means, preferably a spring, is configured to contact a spring holding means. Example 14: An aerosol generator according to any one of Examples 1 to 13, wherein one or more of the first inlet valve, the second inlet valve, and the third inlet valve are equipped with a valve guide, and preferably the valve shaft is at least partially disposed within the valve guide. Example 15: An aerosol generating apparatus according to any one of Examples 1 to 14, wherein the apparatus comprises a heating arrangement, the heating arrangement comprising a first heating element and a second heating element, the first heating element configured to abut against a first cavity, the second heating element configured to abut against a second cavity, and preferably one or both of the first and second heating elements are planar. Example 16: The aerosol generator according to Example 15, wherein one or both of the first and second heating elements are each provided with one or more perforations. Example 17: An aerosol generator according to either Example 15 or 16, wherein a first heating element is disposed between a first cavity and a first airflow channel, a second heating element is disposed between a second cavity and a first airflow channel, the first heating element is disposed in contact with the first airflow channel, and the second heating element is disposed in contact with the first airflow channel. Example 18: The aerosol generator according to Example 17, wherein the first heating element is configured to fluidly communicate a first cavity with a first airflow channel through one or more perforations in the first heating element, and the second heating element is configured to fluidly communicate a second cavity with the first airflow channel through one or more perforations in the second heating element. Example 19: An aerosol generator according to any one of Examples 1 to 16, wherein the device comprises a second airflow channel, and the device comprises a second airflow channel inlet disposed between an air intake and the second airflow channel, preferably the second airflow channel being planar. Example 20: The aerosol generator according to Embodiment 19, further comprising a fourth inlet valve configured to regulate the airflow between an air intake and a second airflow channel via a second airflow channel inlet. Example 21: The aerosol generator according to Example 20, wherein a fourth inlet valve is configured to be movable between a closed position and an open position, in the closed position, fluid communication between the air intake and the second airflow channel is blocked, and in the open position, the second airflow channel is in fluid communication with the air intake through the second airflow channel inlet. Example 22: The aerosol generator according to either Example 20 or 21, wherein a fourth inlet valve is at least partially disposed within the inlet of the second airflow channel. Example 23: The aerosol generator according to any one of Examples 20 to 22, wherein the fourth inlet valve is an electronically controlled valve. Example 24: The aerosol generator according to Embodiment 23, wherein the device comprises at least one electromagnet disposed at the proximal end of the second airflow channel inlet, and the device is configured such that the airflow between the air intake and the second airflow channel via the second airflow channel inlet is regulated by controlling the magnetic interaction between the electromagnet and the third inlet valve. Example 25: An aerosol generator according to any one of Examples 19 to 24, wherein a first heating element is configured to abut a first airflow channel, a second heating element is configured to abut a second airflow channel, the first heating element is configured to fluidly communicate a first cavity with the first airflow channel through one or more perforations in the first heating element, and the second heating element is configured to fluidly communicate a second cavity with the second airflow channel through one or more perforations in the second heating element. Example 26: An aerosol generator according to any one of Examples 15 to 25, wherein the heating arrangement comprises a first induction coil, preferably a first planar induction coil. Example 27: The aerosol generator according to Example 26, wherein the first induction coil is arranged in contact with the first cavity and the second cavity. Example 28: The aerosol generator according to either Example 26 or 27, wherein the heating arrangement comprises a second induction coil, preferably a second planar induction coil. Example 29: The aerosol generator according to Example 28, wherein a first induction coil is arranged in contact with a first cavity, and a second induction coil is arranged in contact with a second cavity. Example 30: An aerosol generator according to any of Examples 1 to 29, wherein the device comprises a removable mouthpiece. Example 31: An aerosol generator according to any one of Examples 1 to 30, wherein the device comprises a main body that includes one or more of a controller and a power supply. Example 32: An aerosol generating apparatus according to any one of Examples 1 to 31, wherein the first biasing means is configured to apply an exhaust force to the first aerosol generating article in a proximal direction. Example 33: The aerosol generating apparatus according to any one of Examples 1 to 32, wherein the second biasing means is configured to apply an expulsion force to the second aerosol generating article in a proximal direction. Example 34: An aerosol generator according to any one of Examples 30 to 33, wherein the mouthpiece is configured to apply a distal force to a first aerosol generating article inserted into a first cavity, against the biasing force of a first biasing means, thereby moving the first inlet valve from a closed position to an open position. Example 35: The aerosol generator according to either of Examples 30 and 34, wherein the mouthpiece is configured to apply a distal force to a second aerosol generating article inserted into a second cavity, against the biasing force of a second biasing means, as a result, the second inlet valve is moved from a closed position to an open position. Example 36: An aerosol generator according to any of Examples 1 to 35, wherein one or both of the first cavity and the second cavity are planar. Example 37: An aerosol generating system comprising an aerosol generating device according to any one of Examples 1 to 36, wherein the system comprises a first aerosol generating article containing a first aerosol forming substrate, preferably a first planar aerosol generating article. Example 38: The aerosol generating system according to Example 37, wherein one or both of the first aerosol generating article and the first aerosol forming substrate are porous. Example 39: The aerosol generating system according to either Example 37 or 38, wherein the system comprises a second aerosol generating article comprising a second aerosol-forming substrate, preferably a second planar aerosol generating article. Example 40: The aerosol generating system according to Example 39, wherein one or both of the second aerosol generating article and the second aerosol forming substrate are porous. Example 41: An aerosol generating system according to any one of Examples 37 to 40, wherein the first aerosol-forming substrate is configured differently from the second aerosol-forming substrate. Example 42: An aerosol generating system according to any one of Examples 37 to 40, wherein the first aerosol-forming substrate is configured to be the same as the second aerosol-forming substrate. Example 43: An aerosol generating system according to any one of Examples 34 to 42, wherein a first aerosol generating article is formed to closely conform to the shape of a first cavity, and a second aerosol generating article is formed to closely conform to the shape of a second cavity. Example 44: An aerosol generating system according to any one of Examples 34 to 43, wherein one or both of the first aerosol forming substrate and the first aerosol generating article are configured to move the first inlet valve from a closed position to an open position. Example 45: The aerosol generating system according to any one of Examples 39 to 44, wherein one or both of the second aerosol forming substrate and the second aerosol generating article are configured to move the second inlet valve from a closed position to an open position.

[0219] 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.

[0220] Features described in relation to one embodiment may be equally applicable to other embodiments of the present invention.

[0221] The present invention will be further explained with reference to the following attached drawings, which are for illustrative purposes only.

[0222] Figure 1 shows a simplified diagram of the aerosol generation system 100. The system comprises an aerosol generator 102. The generator comprises a main body 104. The generator comprises a first cavity 106. The generator comprises a second cavity 108. The generator comprises a first airflow channel 110. The generator comprises a mouthpiece 112. The generator comprises an air intake 114.

[0223] 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 disposed between the first cavity 106 and the second cavity 108.

[0224] System 100 comprises a first aerosol generating article 116 containing a first aerosol-forming substrate. The system comprises a second aerosol generating article 118 containing 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 a first cavity 106 indicated by the arrow. The second aerosol generating article 118 may be inserted into a second cavity 108, as indicated by the arrow.

[0225] 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 so that the aerosol generating article can 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.

[0226] In the second position, the mouthpiece 112 abuts against the downstream end of the main body 104 of the device. In the second position, the mouthpiece 112 is in fluid communication with the first cavity 106, the second cavity 108, and the first airflow channel 110.

[0227] The device 102 includes a first heating element and a second heating element (not shown).

[0228] During use, the user can draw air into the air intake port 114 by holding the mouthpiece 112 in their mouth and inhaling. The inhaled air may be distributed among the first cavity 106, the second cavity 108, and the airflow channel 110. The airflow through the first cavity 106 may enter at least partially into the first aerosol generating article 116. The airflow through the second cavity 108 may enter at least partially into the second aerosol generating article 118. The first heating element can heat the first aerosol forming substrate into which it is inserted. The first heating element can at least partially volatilize the first aerosol forming substrate. Additionally or alternatively, the second heating element can heat the second aerosol forming substrate into which it is inserted. The second heating element can at least partially volatilize the second aerosol forming substrate into which it is inserted.

[0229] The volatile first aerosol-forming substrate can flow radially inward into the first airflow channel 110. The volatile first aerosol-forming substrate can flow directly into the mouthpiece 112. The volatile second aerosol-forming substrate can flow radially inward into the first airflow channel 110. The volatile second aerosol-forming substrate can 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 the air that is drawn directly into the first airflow channel 110 through the air intake port 114. Such a mixture can flow from the first airflow channel 110 into the mouthpiece 112. The aerosol can be inhaled through the mouthpiece 112.

[0230] Figure 2 shows a diagram of the arrangement of the components of the present invention. The components form a laminate which may be included in the intermediate section of the aerosol generator 112 or in the main body 104. The laminate comprises, from top to bottom, 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.

[0231] 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 in fluid communication with the mouthpiece 112 via the open end 128 of the first cavity 106. The second cavity 108 may be in fluid communication with the mouthpiece 112 via the open end 132 of the second cavity 108. The first airflow channel 110 may be in fluid communication with the mouthpiece 112 via the open end 130 of the first airflow channel 110.

[0232] Figure 3 shows the aerosol generation system 100 of the present invention. The system comprises a device 102. The device 102 comprises a main body 104. The device 102 comprises a mouthpiece 112. The device 102 comprises an intermediate section 134.

[0233] 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 an interface for connecting to an external energy source for recharging the power supply 138.

[0234] The mouthpiece 112 includes a housing 144. The mouthpiece 112 includes a chamber 146. The mouthpiece 112 includes an aerosol outlet 148.

[0235] The aerosol generator 102 is shown in its assembled state. The main body 104 is detachably attached to the upstream end of the intermediate section 134. The intermediate section 134 is detachably attached to the upstream end of the mouthpiece 112. Details of the intermediate section 134 are shown in Figure 4.

[0236] 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 134 comprises a first airflow channel 110.

[0237] The first heating element 122 is equipped with an angled perforation 150. The second heating element 124 is equipped with an angled perforation 152.

[0238] 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.

[0239] The intermediate section 134 includes an air intake port 114. The intermediate section 134 includes a first cavity inlet 154. The intermediate section 134 includes a second cavity inlet 156. The intermediate section 134 includes a first airflow channel inlet 158. The intermediate section 134 includes a housing 160. The air intake port 114 may be disposed in the housing 160. The intermediate section 134 includes a first inlet valve (not shown), a second inlet valve (not shown), and a third inlet valve (not shown). The first, second, and third inlet valves are in the open position.

[0240] The first aerosol-generating article 116 is shown inserted into the first cavity 106. The second aerosol-generating article 118 is shown inserted into the second cavity 108.

[0241] During use, the user may inhale through the aerosol outlet 148 of the mouthpiece 112 so that air enters the air intake port 114. The airflow passing through the air intake port 114 may be distributed between the first cavity inlet 154, the second cavity inlet 156, and the first airflow channel inlet 158.

[0242] 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 first airflow channel inlet 164 enters the first airflow channel 110.

[0243] At least a portion of the airflow flows through at least a portion of the first aerosol generating article 116. At least a portion of the airflow flows through at least a portion of the second aerosol generating article 118.

[0244] The first induction coil 120 may heat the first heating element 122. The second induction coil 122 may heat 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 second aerosol generating article 118. The first heating element 122 heats the first aerosol forming substrate to volatilize at least a portion of the first aerosol forming substrate. The second heating element 122 heats the second aerosol forming substrate to volatilize at least a portion of the second aerosol forming substrate. The heating profiles provided by the first heating element 122 and the second heating element 124 may be independently adjusted considering the characteristics of the article and the desired user experience.

[0245] At least a portion of the airflow passing through one or both of the first cavity 106 and the first aerosol generating article 116 enters the first airflow channel 110 through the perforation 150. At least a portion of the airflow passing through one or both of the second cavity 108 and the second aerosol generating article 118 enters the first airflow channel 110 through the perforation 152.

[0246] At least a portion of the volatile first aerosol-forming substrate may enter the mouthpiece 112 through the open end 128. At least a portion of the volatile second aerosol-forming substrate may enter the mouthpiece 112 through the open end 132.

[0247] The volatile first aerosol-forming substrate flowing from the first cavity 106 into the first airflow channel 110 through the perforation 150, and the volatile second aerosol-forming substrate flowing from the second cavity 108 into the first airflow channel 110 through the perforation 152, are mixed with the airflow entering the first airflow channel 110 through the first airflow channel inlet 158. This mixture flows into the mouthpiece 112 through the open end 130.

[0248] The airflow from the first cavity via the open end 128, the airflow from the second cavity 108 via the open end 132, and the airflow from the first airflow channel 110 via the open end 130 are mixed in the chamber 146 of the mouthpiece 112. This mixture of airflows is cooled in the chamber 146 to form an aerosol. The user can inhale the aerosol through the aerosol outlet 148.

[0249] Figure 5 shows the inlet valve 162 of the present invention. The inlet valve 162 is configured as a spring valve. The inlet valve 162 includes a spring retaining means 166. The spring retaining means 166 is a disc. The inlet valve 162 includes a shaft 168. The shaft 168 includes a rod. The inlet valve 162 includes a head 170. The head 170 is tapered. The head 170 is connected to the shaft 168. The shaft 168 is connected to the spring retaining means 166.

[0250] The inlet valve 162 includes a biasing element 172. The biasing element 172 is a coil spring. The coil spring 172 is arranged around the shaft 168. The coil spring 172 is in contact with the spring retaining element 166.

[0251] Figure 6 shows system 100 of the present invention. The above description relating to system 100 in Figure 3 applies to system 100 in Figure 6 with necessary modifications. However, system 100 in Figure 6 accepts only the first aerosol generating article 116 inserted into the first cavity 106. No aerosol generating article is inserted into the second cavity 108. Figure 6 shows the first inlet valve 174 and the second inlet valve 176. The first inlet valve 174 and the second inlet valve 176 are configured as the inlet valve 162 shown in Figure 5.

[0252] The circular inset in Figure 6 shows a more detailed view of the first inlet valve 174 and the first cavity inlet 154.

[0253] The first inlet valve 174 is at least partially disposed within the first cavity inlet 154. The second inlet valve 176 is at least partially disposed within the second cavity inlet 156.

[0254] The first inlet valve 174 is shown in the open position. The inserted first aerosol generating article 116 holds the first inlet valve 174 in the open position. The inserted first aerosol generating article 116 presses the first spring retaining means 166 of the first inlet valve 174, compressing the spring 172. The head 170 is positioned separately from the first cavity inlet 154. The inserted first aerosol generating article pushes the head 170 away from the first cavity inlet 154. As indicated by the arrows, air flows from the air intake 114 through the first cavity inlet 154 into the first cavity 106. As described above, a portion of the airflow entering the first cavity 106 flows through the perforation 150 into the first airflow channel 110. At least a portion of the airflow entering the first cavity 106 flows through the open end 128 into the chamber 146. The airflow passing through the first airflow channel 110 flows into the mouthpiece 112 via the open end 130.

[0255] The second inlet valve 176 is in the closed position. A spring-type biasing means of the second inlet valve 176 pushes a spring retaining means, holding the second inlet valve 176 in the closed position. The second cavity inlet 156 is blocked by the head 170 of the second inlet valve 176. The air intake 114 is not in fluid communication with the second cavity inlet 156. There is no airflow from the air intake 114 to the second cavity 108 through the second cavity inlet 156.

[0256] FIG. 7 shows the system 100 of the present invention. The above description regarding the system 100 of FIG. 6 applies to the system 100 of FIG. 7 with necessary modifications. FIG. 7 further shows a third inlet valve 178. The third inlet valve 178 is disposed at least partially within the first airflow channel inlet 158. The third inlet valve 178 is shown in the open position. Airflow may flow from the air intake 114 through the first airflow channel inlet 158 into the first airflow channel 110. The airflow entering the first airflow channel 110 through the first airflow channel inlet 158 is mixed with the volatilized first aerosol-forming substrate entering the first airflow channel 110 through the perforations 150. Such a mixture flows into the chamber 146 of the mouthpiece 112. The third inlet valve 178 may be an electronically controlled valve. The controller may be configured to adjust the third inlet valve 178. The controller can adjust the airflow through the first airflow channel 110 by controlling the position of the third inlet valve 178 relative to the first airflow channel inlet 158.

[0257] FIG. 8 shows the interaction between the mouthpiece 112 and the intermediate section 134 in the control of the inlet valve. The above description regarding the mouthpiece 112 and the intermediate section 134 applies equally to the mouthpiece 112 and the intermediate section 134 of FIG. 8.

[0258] In the upper left, the mouthpiece 112 is shown in the first position. In the first position, the mouthpiece is at least partially removed from the proximal end of the intermediate section 134. In the upper right, a more detailed view of the corresponding first inlet valve 174 is shown.

[0259] In the lower left, the mouthpiece 112 is shown in the second position. In the second position, the mouthpiece 112 abuts against the proximal end of the intermediate section 134. In the lower right, a more detailed view of the corresponding first inlet valve 174 is shown.

[0260] The mouthpiece 112 in Figure 8 is a hinged mouthpiece. As indicated by the double arrow in the upper left diagram, the mouthpiece 112 can be rotated between a first position and a second position.

[0261] In the upper left diagram, the first aerosol generating article 116 is partially inserted into the first cavity 106. The first aerosol generating article 116 is in contact with the first inlet valve 174. The first inlet valve 174 is in the closed position. The head 170 is in contact with the first cavity inlet 154. The head 170 blocks the airflow from the air intake 114 to the first cavity inlet 154.

[0262] When the mouthpiece 112 is attached to the upstream end of the intermediate section 134, the pressing means 180 pushes the partially inserted first aerosol generating article 116 toward the distal end of the device. The first aerosol generating article 116 engages with the first spring retaining means 166. The first inlet valve 174 is pushed toward the distal end of the device. The head 170 is disengaged from the first cavity inlet 154. The first cavity 106 then fluidly communicates with the air intake port 114 through the open first cavity inlet 154. The first cavity 106 then fluidly communicates with the air distribution channel 182.

[0263] Since no aerosol-generating article is inserted into the second cavity 108, the second inlet valve 178 is in the closed position.

[0264] The first inlet valve 174 is equipped with a valve guide 184. The shaft 168 is partially disposed within the valve guide 184. The valve guide 184 allows the first inlet valve 174 to be precisely positioned within the first cavity inlet 154. The valve guide 184 can improve the accuracy of blocking fluid communication between the air intake 114 and the first cavity inlet 154.

[0265] Figure 9 shows a third inlet valve 178 partially inserted into the first airflow channel inlet 158. The configuration of the third inlet valve 178 corresponds to the configuration shown in Figure 5. The third inlet valve 178 is equipped with a valve guide 184.

[0266] The electromagnet 186 is located at the downstream end of the first airflow inlet 158. The electromagnet 186 is located at the base of the first airflow channel 110.

[0267] On the left, the third inlet valve 178 is shown in the closed position. On the right, the third inlet valve 178 is shown in the open position. The third inlet valve 178 can be moved from the closed position to the opposite position by the electromagnet 186.

[0268] The controller is connected to the electromagnet 186. The controller can generate a magnetic field by applying power to the electromagnet 186. The magnetic field can attract the spring retaining means 166. When power is supplied to the electromagnet 186, they exert a magnetic force distally on the spring retaining means 166. The spring retaining means 166 may move distally. The head 170 moves away from the distal end of the first air intake 158, so that the air intake 114 is in fluid communication with the first airflow channel 110.

[0269] Figure 10 shows the aerosol generator 102 of the present invention. The description of the apparatus 102 of system 100 in Figure 3 applies to the apparatus in Figure 10 with necessary modifications. Details of the intermediate section 134 are shown in further detail in Figure 11.

[0270] Figure 11 shows an intermediate section 134 of the apparatus in Figure 10. The intermediate section 134 comprises a first induction coil 120. The first induction coil 120 is positioned in the center of the apparatus on the longitudinal axis. The first cavity 106 abuts against the first induction coil 120. The second cavity 108 abuts against the first induction coil 120. The first induction coil 120 is sandwiched between the first cavity 106 and the second cavity 108. The first induction coil 120 is positioned between the first cavity 106 and the second cavity 108.

[0271] The intermediate section 134 includes a first heating element 122. The intermediate section 134 includes a second heating element 124. The intermediate section 134 includes a first airflow channel 110. The intermediate section 134 includes a second airflow channel 188. The first heating element 122 is disposed between the first airflow channel 110 and the first cavity 106. The second heating element 124 is disposed between the second airflow channel 188 and the second cavity 108.

[0272] The intermediate section 134 includes a first cavity inlet 154. The intermediate section 134 includes a second cavity inlet 156. The intermediate section 134 includes a first airflow channel inlet 158. The intermediate section 134 includes a second airflow channel inlet 190.

[0273] The intermediate section 134 is equipped with an air intake port 114.

[0274] The intermediate section 134 includes a first cavity open end 128. The intermediate section 134 includes a second cavity open end 132. The intermediate section 134 includes a first airflow channel open end 130. The intermediate section 134 includes a second airflow channel open end 192.

[0275] The first cavity open end 128 is in fluid communication with the chamber 146 of the mouthpiece 112. The second cavity open end 132 is in fluid communication with the chamber 146. The first airflow channel open end 130 is in fluid communication with the chamber 146. The second airflow channel open end 192 is in fluid communication with the chamber 146.

[0276] A first inlet valve 174 (not shown) is at least partially located at the first cavity inlet 154. A second inlet valve 176 (not shown) is at least partially located at the second cavity inlet 156. A third inlet valve 178 (not shown) is at least partially located at the first airflow channel inlet 158. A fourth inlet valve 194 (not shown) is at least partially located at the second airflow channel inlet 190.

[0277] The first inlet valve 174 controls the airflow into the first cavity 106 via the first cavity inlet 154. The second inlet valve 176 controls the airflow into the second cavity 108 via the second cavity inlet 156. The third inlet valve 178 controls the airflow into the first airflow channel 110 via the first airflow channel inlet 158. The fourth inlet valve 194 controls the airflow into the second airflow channel 188 via the second airflow channel inlet 190.

[0278] FIG. 12 shows an aerosol generation system 100 comprising the aerosol generator 102 of FIG. 11 into which the first aerosol generating article 116 and the second aerosol generating article 118 are inserted. The first aerosol generating article 116 is inserted into the first cavity 106. The second aerosol generating article 118 is inserted into the second cavity 108.

[0279] The first inlet valve 174, the second inlet valve 176, the third inlet valve 178, and the fourth inlet valve 194 are all in the open position. At least a portion of the airflow entering the air intake 114 flows into the first cavity 106 through the first cavity inlet 154. At least a portion of the airflow entering the air intake 114 flows into the second cavity 108 through the second cavity inlet 156. At least a portion of the airflow entering the air intake 114 flows into the first airflow channel 110 through the first airflow channel inlet 158. At least a portion of the airflow entering the air intake 114 flows into the second airflow channel 188 through the second airflow channel inlet 190.

[0280] The induction heating coil 120 may heat the first heating element 122. The induction heating coil 120 may heat the second heating element 124. The first heating element 122 may heat the first aerosol forming substrate of the first aerosol generating article 116 to volatilize at least a portion of the first aerosol forming substrate. The second heating element 124 may heat the second aerosol forming substrate of the second aerosol generating article 116 to volatilize at least a portion of the second aerosol forming substrate.

[0281] At least a portion of the volatile first aerosol-forming substrate may flow from the first cavity 106 through the perforation 150 into the first airflow channel 110. At least a portion of the volatile second aerosol-forming substrate may flow from the second cavity 108 through the perforation 152 into the second airflow channel 188.

[0282] At least a portion of the volatile first aerosol-forming substrate may flow from the first cavity 106 into the mouthpiece 112 through the first cavity open end 128. At least a portion of the volatile second aerosol-forming substrate may flow from the second cavity 108 into the mouthpiece 112 through the second cavity open end 132.

[0283] The volatile first aerosol-forming substrate entering the first airflow channel 110 through the perforation 150 is mixed with the airflow entering the first airflow channel 110 through the first airflow channel inlet 154. This mixture flows into the mouthpiece 112 through the first airflow opening end 130.

[0284] The volatile second aerosol-forming substrate entering the second airflow channel 188 through the perforation 152 is mixed with the airflow entering the second airflow channel 188 through the first airflow channel inlet 190. This mixture flows into the mouthpiece 112 through the second airflow channel open end 192.

[0285] The airflow originates from the first cavity 106, the second cavity 108, the first airflow channel 110, and the second airflow channel 188, and is mixed within the chamber 146 of the mouthpiece 112. This mixture is cooled within the chamber 146 to form an aerosol. The user can inhale the aerosol through the aerosol outlet 148.

[0286] Figure 13 shows an aerosol generating system 100 comprising the aerosol generating device 102 of Figure 11, into which the first aerosol generating article 116 is inserted. The second aerosol generating article is not inserted into the second cavity 108.

[0287] The second inlet valve 176 is in the closed position because the second aerosol generating article is not inserted into the second cavity 108. The second cavity 108 is not in fluid communication with the air intake port 114. The fourth inlet valve 194 is in the closed position. The second airflow channel 188 is not in fluid communication with the air intake port 114.

[0288] The first induction coil 120 heats the first heating element 122. The first heating element 122 heats the first aerosol-forming substrate of the first aerosol-generating article 116, causing at least a portion of the first aerosol-forming substrate to volatilize. At least a portion of the volatilized first aerosol-forming substrate flows from the first cavity 106 through the perforation 150 into the first airflow channel 110. This portion of the volatilized first aerosol-forming substrate is mixed with the airflow entering the first airflow channel 110 through the first airflow channel inlet 158. This mixture flows from the first airflow channel 110 into the mouthpiece 112 through the first airflow channel open end 130.

[0289] At least a portion of the volatile first aerosol-forming substrate flows from the first cavity 106 into the mouthpiece 112 through the first cavity open end 128.

[0290] The airflow from the first cavity 106 and the first airflow channel 110 is mixed in the chamber 146 of the mouthpiece 112. This mixture is cooled in the chamber 146 to form an aerosol. The user can inhale the aerosol through the aerosol outlet 148.

Claims

1. Aerosol generator, A first cavity configured to receive a first aerosol generating article containing a first aerosol forming substrate, A second cavity configured to receive a second aerosol generating article containing a second aerosol-forming substrate, Air intake and A first cavity inlet is disposed between the air intake port and the first cavity, A first inlet valve, wherein the first inlet valve is configured to be movable between a closed position and an open position, wherein in the closed position, fluid communication between the air intake and the first cavity is blocked, and in the open position, the first cavity is in fluid communication with the air intake through the first cavity inlet, and the first inlet valve is configured to be in the closed position when the first aerosol generating article is not fully inserted into the first cavity, and the first inlet valve is configured to be in the open position when the first aerosol generating article is fully inserted into the first cavity, A second cavity inlet is disposed between the aforementioned air intake and the second cavity, A second inlet valve is configured to be movable between a closed position and an open position, wherein in the closed position, fluid communication between the air intake and the second cavity is blocked, and in the open position, the second cavity is in fluid communication with the air intake through the second cavity inlet, and a second biasing means is provided which biases the second inlet valve toward the closed position if the second aerosol generating article is not fully inserted into the second cavity, and the second inlet valve is configured to be in the open position if the second aerosol generating article is fully inserted into the second cavity. An aerosol generating device comprising a heating arrangement, the heating arrangement comprising a first heating element and a second heating element, wherein the first heating element is configured to abut against the first cavity and the second heating element is configured to abut against the second cavity.

2. The aerosol generating apparatus according to claim 1, wherein the first inlet valve is at least partially disposed within the first cavity inlet, and the second inlet valve is at least partially disposed within the second cavity inlet.

3. The aerosol generating apparatus according to claim 1 or 2, wherein the apparatus comprises a first airflow channel, and the apparatus comprises a first airflow channel inlet disposed between the air intake and the first airflow channel, preferably the first airflow channel being planar.

4. The aerosol generator according to claim 3, wherein the device comprises a third inlet valve configured to adjust the airflow between the air intake port and the first airflow channel via the first airflow channel inlet.

5. The aerosol generator according to claim 4, wherein the third inlet valve is configured to be movable between a closed position and an open position, in the closed position, fluid communication between the air intake port and the first airflow channel is blocked, and in the open position, the first airflow channel is in fluid communication with the air intake port via the first airflow channel inlet.

6. The aerosol generator according to claim 4 or 5, wherein the third inlet valve is at least partially disposed within the first airflow channel inlet.

7. The aerosol generating apparatus according to any one of claims 4 to 6, wherein the third inlet valve is an electronically controlled valve.

8. The aerosol generating apparatus according to any one of claims 1 to 7, wherein one or more of the first biasing means, the second biasing means, and the third inlet valve comprises a spring, preferably a coil spring.

9. The aerosol generating apparatus according to any one of claims 1 to 8, wherein one or both of the first heating element and the second heating element are planar.

10. The aerosol generating apparatus according to any one of claims 1 to 9, wherein the first heating element is disposed between the first cavity and the first airflow channel, the second heating element is disposed between the second cavity and the first airflow channel, the first heating element is disposed in contact with the first airflow channel, and the second heating element is disposed in contact with the first airflow channel.

11. The aerosol generating apparatus according to any one of claims 1 to 10, wherein the heating arrangement comprises a first induction coil, preferably a first planar induction coil, and the heating arrangement comprises a second induction coil, preferably a second planar induction coil.

12. The aerosol generating apparatus according to any one of claims 1 to 11, wherein the first biasing means is configured to apply a discharge force to the first aerosol generating article in a proximal direction, and the second biasing means is configured to apply a discharge force to the second aerosol generating article in a proximal direction.

13. An aerosol generating system comprising the aerosol generating device according to any one of claims 1 to 12, wherein the system comprises a first aerosol generating article containing a first aerosol forming substrate, preferably a first planar aerosol generating article.

14. The aerosol generating system according to claim 13, wherein the system comprises a second aerosol generating article containing a second aerosol forming substrate, preferably a second planar aerosol generating article.

15. The aerosol generating system according to claim 14, wherein one or both of the first aerosol forming substrate and the first aerosol generating article are configured to move the first inlet valve from the closed position to the open position, and one or both of the second aerosol forming substrate and the second aerosol generating article are configured to move the second inlet valve from the closed position to the open position.

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