Mouthpiece for aerosol generation systems

Abstract

The present invention relates to a mouthpiece (14) for an aerosol generating system (10). The mouthpiece (14) comprises an aerosol outlet (68), an aerosol inlet (70), an aerosol channel (72) extending between the aerosol inlet (70) and the aerosol outlet (68), an air inlet, and an air inlet channel (76) extending between the air inlet (74) and the aerosol channel (72). The downstream portion of the air inlet channel (76) is inclined with respect to the aerosol channel (72). The present invention also relates to an aerosol generating system (10) comprising a main body (12), such mouthpiece (14) which is a replaceable mouthpiece (14), an atomizer module (16), and a replaceable cartridge (18). The present invention further relates to a method for assembling such an aerosol generating system (10).

Description

Technology Field

[0001] The present invention relates to a mouthpiece for an aerosol generating system. The present invention also relates to an aerosol generating system and a method for assembling such an aerosol generating system. Background Technology

[0002] Currently, several types of aerosol generation systems are commercially available. These systems 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. Other systems, often referred to as atomizers, typically generate aerosols by mechanical action, such as by vibrating elements like a mesh or a membrane with evenly distributed holes. Vibrating atomizers use the deformation or vibration of these vibrating elements to push liquid out from them.

[0003] In a conventional vibrating mesh atomizer, a piezoelectric element in contact with the mesh is used to generate vibrations in the mesh. The mesh is adjacent to and in direct contact with a liquid aerosol forming substrate. The deformation of the vibrating mesh creates a pressure field within the liquid, which pumps and fills the holes with liquid. The volume of liquid displaced through the holes is atomized into droplets, discharged through the mesh holes as aerosol droplets of a uniform distribution, and then transported to the user through an airflow channel.

[0004] Typically, such a system includes a mouthpiece, an atomizer unit containing a vibrating element, and a liquid reservoir for storing a liquid aerosol-forming material. The liquid reservoir may be contained in a cartridge. Generally, droplets generated by the vibrating element of such a system have a relatively large particle size of about 1 to 5 μm. These larger droplets are prone to settling on the inner walls of the aerosol-generating system.

[0005] It would be desirable to provide an aerosol generating system that reduces, preferably minimizes, the deposition of particles, particularly droplets, on the inner wall during use. It would be desirable to have a mouthpiece for an aerosol generating system that reduces, preferably minimizes, the deposition of particles, particularly droplets, on the inner wall during use. It would be desirable to have a mouthpiece with an improved airflow design.

[0006] According to an embodiment of the present invention, a mouthpiece for an aerosol generating system is provided. The mouthpiece may include one or more of an aerosol outlet, an aerosol inlet, an aerosol channel extending between the aerosol inlet and the aerosol outlet, an air inlet, and an air inlet channel extending between the air inlet and the aerosol channel. A downstream portion of the air inlet channel may be inclined with respect to the aerosol channel.

[0007] According to an embodiment of the present invention, a mouthpiece for an aerosol generation system is provided. The mouthpiece comprises an aerosol outlet, an aerosol inlet, an aerosol channel extending between the aerosol inlet and the aerosol outlet, an air inlet, and a mouth end portion including an air inlet channel extending between the air inlet and the aerosol channel. A downstream portion of the air inlet channel is inclined with respect to the aerosol channel.

[0008] According to an embodiment of the present invention, a mouthpiece for an aerosol generation system is provided. The mouthpiece comprises an aerosol outlet, an aerosol inlet, an aerosol channel extending between the aerosol inlet and the aerosol outlet, an air inlet, and an air inlet channel extending between the air inlet and the aerosol channel, comprising a mouthpiece end portion. A downstream portion of the air inlet channel is inclined with respect to the aerosol channel. During use of the aerosol generation system, the air inlet channel is configured to guide the surrounding air wall toward the wall of the aerosol channel.

[0009] An aerosol generating system may be provided that reduces, preferably minimizes, the deposition of particles, particularly droplets, on the inner wall during use by providing a mouthpiece comprising a downstream portion of an air inlet channel inclined with respect to the aerosol channel. An aerosol generating system may be provided that reduces, preferably minimizes, the deposition of particles, particularly droplets, on the inner wall during use by providing a mouthpiece comprising a downstream portion of an air inlet channel inclined with respect to the aerosol channel. A mouthpiece having an improved airflow design may be provided by providing a mouthpiece comprising a downstream portion of an air inlet channel inclined with respect to the aerosol channel.

[0010] The mouthpiece may include a longitudinal axis. The longitudinal axis of the mouthpiece may be parallel to the longitudinal axis of the aerosol generating system. The longitudinal axis of the mouthpiece may extend between the proximal end of the mouthpiece and the distal end of the mouthpiece. The mouthpiece may be a replaceable mouthpiece configured to be reversibly connectable to the aerosol generating system.

[0011] The aerosol channel may include a downstream portion, an upstream portion, and a single bend between the upstream and downstream portions. The aerosol channel may include only a single bend. The downstream portion and the upstream portion may extend in different directions. An air inlet channel may be coupled to the aerosol channel in the bend region of the aerosol channel. The bend may be at least 45 degrees, preferably about 90 degrees. The upstream portion of the aerosol channel may be perpendicular to the longitudinal axis of the mouthpiece. The downstream portion of the aerosol channel may not be perpendicular to the longitudinal axis of the mouthpiece. The downstream portion of the aerosol channel may be parallel to the longitudinal axis of the mouthpiece. An aerosol outlet may be arranged in the aerosol outlet plane. The aerosol outlet plane may be perpendicular to the longitudinal axis of the mouthpiece. An aerosol inlet may be arranged in the aerosol inlet plane. The aerosol inlet plane may be parallel to the longitudinal axis of the mouthpiece.

[0012] As used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of a component or part of a component of an aerosol generating system with respect to the direction in which the user inhales the aerosol generating device during use.

[0013] Alternatively, the aerosol channel may be linear and perpendicular to the longitudinal axis of the mouthpiece. In this embodiment, the mouth end may be arranged on the lateral side of the aerosol generator, and the aerosol generator system may be maintained vertically.

[0014] During the use of the aerosol generation system, the air inlet channel may be configured to direct the surrounding air wall toward the aerosol flow within the aerosol channel. The surrounding air wall may be configured to reduce, preferably prevent, direct contact of the aerosol flow with the bend between the upstream and downstream sections. During the use of the aerosol generation system, the air inlet channel may be configured to direct the surrounding air wall toward the wall of the aerosol channel. The surrounding air wall may reduce or prevent aerosol droplets from settling on the inner wall of the aerosol channel. The surrounding air wall may minimize the collision and merging of aerosol particles on the inner wall of the aerosol channel.

[0015] The ambient air wall may be a stream of ambient air. The ambient air wall may be an ambient air stream that is at least partially laminar. The term 'laminar' refers to a stream that flows smoothly with minimal or no turbulence. During the use of an aerosol generation system, the air inlet channel may be configured to direct an ambient air stream that is at least partially laminar toward the wall of the aerosol channel. The stream of ambient air may be partially laminar. The stream of ambient air may be laminar. The stream of ambient air may be completely laminar.

[0016] The downstream portion of the air inlet channel may include a longitudinal axis. The longitudinal axis of the downstream portion of the air inlet channel may not be parallel to the longitudinal axis of the mouthpiece. The longitudinal axis of the downstream portion of the air inlet channel may not be perpendicular to the longitudinal axis of the mouthpiece. The longitudinal axis of the downstream portion of the air inlet channel may form an angle of 0 to 90 degrees, preferably 40 to 80 degrees, with respect to the longitudinal axis of the mouthpiece.

[0017] A mouthpiece according to any one of the claims above, wherein the aerosol inlet may be configured to be connectable to an atomizer module of an aerosol generating system. The aerosol inlet may be axially surrounded by a mouthpiece sealing member. The mouthpiece sealing member may be a rubber seal. The mouthpiece sealing member may be slightly compressed when the mouthpiece is connected to the atomizer module. The mouthpiece sealing member may provide a hermetic seal with the atomizer module, preferably a liquid sealing connection.

[0018] The air inlet channel may include an upstream portion. The upstream portion of the air inlet channel may be connected to a pressure sensor channel, wherein the pressure sensor channel may be configured to be connectable to the main body of an aerosol generating system containing a pressure sensor. The pressure sensor channel may include a pressure sensor opening. The pressure sensor opening may be configured to be fluidly connected to a pressure sensor of the connected main body. The pressure sensor opening may be axially surrounded by a seal, preferably a rubber seal. The seal may be slightly compressed when the pressure sensor channel is connectable to the main body.

[0019] The air inlet may include a flow restriction section. The flow restriction may increase the resistance to suction (RTD) of the aerosol generation system.

[0020] Aerosol channels can have a circular or elliptical cross-section, or a rectangular cross-section with rounded corners.

[0021] The mouthpiece may include a proximal portion and a distal portion. The proximal portion may include an aerosol channel, and the distal portion may include an air inlet channel. The air inlet may be arranged at the distal end of the mouthpiece, preferably on the lateral side of the distal end. The air inlet channel may have a non-circular cross-section. The air inlet channel may have an elliptical cross-section or a rectangular cross-section with rounded corners.

[0022] The mouthpiece can be manufactured from toxicologically approved polymers.

[0023] According to an embodiment of the present invention, an aerosol generating system is provided comprising a main body, a mouthpiece described herein which is a replaceable mouthpiece, an atomizer module, and a replaceable cartridge. When the aerosol generating system is assembled, the atomizer module may be positioned laterally to the aerosol generating system between the replaceable mouthpiece and the replaceable cartridge.

[0024] By providing an aerosol generating system comprising an atomizer module positioned laterally to the aerosol generating system between a replaceable mouthpiece and a replaceable cartridge, easy replacement of the cartridge may be provided. By providing an aerosol generating system comprising an atomizer module positioned laterally to the aerosol generating system between a replaceable mouthpiece and a replaceable cartridge, an aerosol generating system with improved liquid flow during use may be provided. By providing an aerosol generating system comprising an atomizer module positioned laterally to the aerosol generating system between a replaceable mouthpiece and a replaceable cartridge, improved accessibility to individual components of the system may be provided. By providing an aerosol generating system comprising an atomizer module positioned laterally to the aerosol generating system between a replaceable mouthpiece and a replaceable cartridge, cleaning of the replaceable mouthpiece may be possible.

[0025] As used herein, the term "aerosol generating system" is used to describe a system that generates aerosols by interacting with an aerosol-forming substrate. Preferably, the aerosol generating system is a smoking system that generates aerosols by interacting with an aerosol-forming substrate, and the aerosols can be inhaled directly into the user's lungs through the user's mouth.

[0026] The aerosol generating system may include a longitudinal axis. The longitudinal axis may extend along a longitudinal extension of the aerosol generating system. The longitudinal axis of the aerosol generating system may extend between the proximal end of the aerosol generating system and the distal end of the aerosol generating system. The lateral direction may be perpendicular to the longitudinal axis of the aerosol generating system.

[0027] As used herein, the term 'proximal' refers to the user or mouse end of the aerosol generating system or a part thereof, and the term 'distal' refers to the end opposite to the proximal end. As used herein, the term 'lateral' refers to the direction perpendicular to the longitudinal axis of the aerosol generating system.

[0028] The atomizer module may be sandwiched between the replaceable mouthpiece and the replaceable cartridge. The replaceable cartridge may be reversibly inserted from the lateral side of the aerosol generation system. The replaceable cartridge may be reversibly removed from the aerosol generation system without the need to remove or move the atomizer module within the aerosol generation system. The replaceable cartridge may be reversibly removed from the aerosol generation system without the need to remove or move the replaceable mouthpiece within the aerosol generation system. The replaceable cartridge may be accessible from the lateral side of the aerosol generation system. The replaceable cartridge may be reversibly connected to the aerosol generation system.

[0029] The atomizer module may include an electrical connection. The electrical connection may provide an electrical connection to the main body. The atomizer module may include a vibrating transducer.

[0030] As used herein, the term "vibratory transducer" is used to refer to a device configured to convert energy from an initial form to a different form, wherein the different form includes or is composed of a vibratory output.

[0031] The atomizer module may include a piezoelectric actuator. The atomizer module may include a vibration element. The vibration element may be one of a vibration mesh, a vibration membrane, or a vibration plate.

[0032] Piezoelectric actuators are desirable because they are an energy-efficient and lightweight means of providing a vibration output from an electrical input. Piezoelectric actuators have high energy conversion efficiency from electric power to mechanical power. In addition, piezoelectric actuators are available in a wide variety of materials and shapes. For a piezoelectric actuator, inputting an electric drive signal into the piezoelectric actuator results in a mechanical output in the form of vibration. The vibration output from the transducer induces vibration of the vibrating membrane. Therefore, the use of a piezoelectric actuator within or as a transducer provides an energy-efficient means of inducing vibration of the membrane. However, as an alternative to the use of piezoelectric actuators, actuator(s) comprising one or more of electromagnetic elements, magnetostrictive elements, or electrostrictive elements may also be used in the vibrating transducer.

[0033] The atomizer module may include a vibrating transducer holder configured to support a vibrating transducer. The atomizer module may include a vibrating element. The vibrating transducer may be operably coupled to a vibrating membrane to vibrate the vibrating membrane substantially axially when in use.

[0034] The vibrating transducer holder may be overmolded around the vibrating transducer. The vibrating transducer may be integral with the vibrating transducer holder. The vibrating transducer holder may comprise a flexible material. The flexible material of the vibrating transducer holder may have a hardness in the range of 5 Shore A to 120 Shore A, preferably 20 Shore A to 40 Shore A. The vibrating transducer holder may comprise a rubber material. By providing a vibrating transducer holder made of a rubber material, the vibrating element may be supported in place without significantly damping the vibration of the vibrating element. By providing a vibrating transducer holder made of a rubber material, a seal between the atomizer module and the replaceable mouthpiece may be provided. By providing a vibrating transducer holder made of a rubber material, axial tolerances of the components of the aerosol generation system may be compensated.

[0035] As used herein, "Shore A" refers to the Shore A hardness scale. The Shore A hardness value of a material sample is determined by the degree to which the foot of the hardness tester penetrates into the sample.

[0036] The vibrating transducer holder may be axially symmetric. By providing an axially symmetric vibrating transducer holder, orientation is not required during assembly. The vibrating transducer holder may be in the shape of a washer. The vibrating transducer holder may have a thickness of 1 millimeter to 10 millimeters, preferably 2 millimeters to 5 millimeters, and more preferably about 3 millimeters.

[0037] The vibrating transducer may be washer-shaped. The vibrating transducer may include a vibrating element.

[0038] A vibrating element may be placed on a vibrating plane, and when the aerosol generating system is assembled, the vibrating plane may not be perpendicular to the longitudinal axis of the aerosol generating system. The vibrating plane may be parallel to or include the longitudinal axis of the aerosol generating system. The vibrating plane may not be horizontal with respect to the aerosol generating system. The vibrating plane may be perpendicular to the aerosol generating system.

[0039] The vibrating element may have a flat shape. The vibrating element may have a disc shape. The vibrating membrane may be formed from any suitable material. For example and without limitation, the vibrating membrane may be formed from a polymer material, thereby providing the advantages of reduced mass and inertia. However, the vibrating membrane may be formed from any other suitable material, such as metal, semiconductor, dielectric, or ceramic materials. The material may be crystalline or amorphous. The vibrating membrane may be a composite of two or more different materials. For example and without limitation, examples of membrane materials include stainless steel, alloys such as palladium, silver, Ni-Co or Ni-Pd, polyimide and polyamide, ceramics based on silicon, silicon carbide, silicon nitride, aluminum nitride, silicon oxide, aluminum oxide or barium titanate, or combinations thereof such as layered membranes consisting of layers of silicon and silicon nitride or silicon oxide or metal. The selection of material(s) used for the vibrating membrane may be influenced by specific liquid aerosol-forming substrate(s) intended to be used with the atomizer module and aerosolized by the atomizer module. For example, it is desirable to select a material for the vibrating membrane that does not chemically react or decompose as a result of contact with the selected liquid aerosol-forming substrate. As merely an example, the vibrating membrane may be formed from any of palladium, stainless steel, copper-nickel alloy, polyimide, polyamide, silicon, or aluminum nitride.

[0040] Advantageously, the vibrating membrane may include an aerosol generating zone, and the aerosol generating zone may be provided with a plurality of nozzles for the passage of a liquid aerosol forming substrate. The plurality of nozzles allows a dispersion of aerosol droplets to be discharged from the nozzles when the liquid aerosol forming substrate is supplied to one surface of the vibrating membrane. The plurality of nozzles may have a diameter in the range of 1 micrometer to 20 micrometers. As used herein, the term “nozzle” is used to refer to an aperture, hole, or bore through the membrane that provides a passage for the liquid aerosol forming substrate to move through the membrane. For example and without limitation, during the use of the atomizer module, the liquid aerosol forming substrate may come into contact with a first side of the vibrating membrane. Vibration of the vibrating membrane induced by the vibration output of the transducer may push the liquid substrate from the second (opposing) side of the membrane so that it is discharged through the nozzles in an aerosol droplet forming pattern. The nozzles can be individually sized and arranged relative to each other to provide a predetermined aerosol droplet formation pattern.

[0041] The aerosol generation system may not include a heating element. The aerosol generation system may include a heating element. The heating element may be located upstream of the vibrating element. By doing so, the viscosity of the liquid aerosol forming substrate may be reduced. Aerosol generation may be performed at ambient temperature. Aerosol generation may not require an elevated temperature.

[0042] When the aerosol generating system is assembled, the aerosol generating system may provide liquid flow from a replaceable cartridge to an atomizer module in a direction perpendicular to the longitudinal axis of the aerosol generating system. Liquid flow may be provided from a replaceable cartridge to an atomizer module in a direction perpendicular to the longitudinal axis of the aerosol generating system. The direction of liquid flow from the replaceable cartridge to the atomizer module may be approximately 90 degrees with respect to the longitudinal axis of the aerosol generating system. The direction of liquid flow from the replaceable cartridge to the atomizer module may be 85 to 95 degrees with respect to the longitudinal axis of the aerosol generating system. During use, the aerosol generating system may be supported in a horizontal position by the user. When the aerosol generating system is supported horizontally and liquid flow is provided in a direction perpendicular to the longitudinal axis, liquid flow may be facilitated due to gravity.

[0043] When the aerosol generation system is assembled, the main body may come into direct contact with the atomizer module and the replaceable mouthpiece. When the aerosol generation system is assembled, the replaceable cartridge may not come into direct contact with the main body.

[0044] The atomizer module may be L-shaped. The L-shaped atomizer module may provide reversible connections to a replaceable cartridge from two sides, preferably two sides perpendicular to each other. The L-shaped atomizer module may provide connections to a replaceable cartridge to a distal outer surface of the cartridge and a lateral outer surface of the cartridge.

[0045] The atomizer module may include a locking system. The locking system may include a sliding portion. The sliding portion may be configured to slide along the longitudinal axis of the aerosol generating system. To remove a replaceable cartridge from the atomizer module, it may be necessary to push the sliding portion downward along the longitudinal axis of the aerosol generating system. The atomizer module may include a lateral projection at its distal end that includes a locking system configured to be lockably connected to a replaceable cartridge. The locking system of the atomizer module may provide a reversible connection with the replaceable cartridge. The locking system may be configured to be reversibly connected to the distal outer surface of the replaceable cartridge. The replaceable cartridge may include a connection portion on its distal end that is configured to be lockably connected to the locking system of the atomizer module. The replaceable cartridge may include a receiving portion for receiving the sliding portion of the atomizer module.

[0046] The replaceable cartridge may be configured to be reversibly connected to the atomizer module. The replaceable cartridge may be reversibly connected to the atomizer module from two sides, preferably two sides perpendicular to each other. The replaceable cartridge may be reversibly connected to the atomizer module through at least one of a hinge mechanism, a slider mechanism, a snap-fit ​​mechanism, a bayonet mechanism, a magnetic mechanism, a spring-actuated mechanism, or a push-push mechanism.

[0047] A replaceable cartridge can be reversibly connected to an atomizer module via a hinge mechanism. The replaceable cartridge may include a hinge projection, and the atomizer module may include a receiving portion configured to receive the hinge projection of the replaceable cartridge. The receiving portion may include a rod. The rod may be arranged perpendicular to the longitudinal axis of the aerosol generating system. The rod may be arranged horizontally. The hinge projection may be configured to latch onto the rod. The replaceable cartridge may include a hinge projection at its proximal end, and the atomizer module may include a receiving portion at its proximal end.

[0048] The atomizer module can be configured to be connectable to the main body. The atomizer module can be replaceable and can be configured to be reversibly connectable to the main body.

[0049] A replaceable mouthpiece may be configured to be reversibly connected to an atomizer module. The replaceable mouthpiece may be reversibly connected to the atomizer module through at least one of a hinge mechanism, a slider mechanism, a snap-fit ​​mechanism, a bayonet mechanism, a magnetic mechanism, a spring-actuated mechanism, or a push-push mechanism. The replaceable mouthpiece may include at least one recess configured to receive at least one protruding connection of the atomizer module. The replaceable mouthpiece may include one proximal recess at the proximal end of the replaceable mouthpiece and two distal recesses at the distal end of the replaceable mouthpiece. The atomizer module may include one proximal protruding connection and two distal protruding connections. The proximal recess of the replaceable mouthpiece may be configured to receive the proximal protruding connection of the atomizer module, and the distal recess may be configured to receive the distal protruding connection of the atomizer module.

[0050] Alternatively, instead of a replaceable mouthpiece, an integral mouthpiece may exist, wherein the integral mouthpiece and the atomizer module may be a single integral element, or the integral mouthpiece and the main body may be a single integral element.

[0051] At least one recess of the replaceable mouthpiece may be shaped to provide a sliding insertion portion to at least one protruding connection portion of the atomizer module.

[0052] A replaceable cartridge may include a liquid reservoir configured to store a liquid aerosol-forming substrate. The liquid reservoir may be configured to store a volume of aerosol-forming substrate of 0.5 to 10 milliliters, preferably 1 to 3 milliliters. The liquid reservoir may include an inner wall. The inner wall may increase the structural rigidity of the replaceable cartridge. The inner wall may include a slanted wall. The slanted wall may facilitate the liquid aerosol-forming substrate being located at the distal end of the replaceable cartridge. The slanted wall may reduce the volume of liquid at the distal corner or within the liquid reservoir.

[0053] As used herein, the term 'aerosol-forming substrate' may relate to a substrate capable of releasing a volatile compound capable of forming an aerosol or vapor. The term 'aerosol-forming substrate' may also relate to a substrate capable of being mechanically sprayed. The aerosol-forming substrate may be in the form of a gel or a liquid. The terms 'aerosol' and 'vapor' are used interchangeably. The aerosol-forming substrate may be a liquid.

[0054] As used herein, the term 'liquid' refers to a substance provided in liquid form and includes a substance provided in gel form.

[0055] The aerosol-forming substrate may contain nicotine. The nicotine-containing aerosol-forming substrate may be a nicotine salt matrix.

[0056] The aerosol-forming substrate may include plant-based materials. The aerosol-forming substrate may include tobacco.

[0057] The replaceable cartridge may include a fluid-permeable element that is in fluid communication with the liquid reservoir. An inclined wall may guide the liquid aerosol-forming substrate toward the fluid-permeable portion. The fluid-permeable element may have a cylindrical shape. The fluid-permeable element may be cylindrical. The fluid-permeable element may include or be composed of a porous material. The fluid-permeable element may include or be composed of a porous wick material. The fluid-permeable element may be a cylindrical wick. The fluid-permeable element may include or be composed of at least one of natural fibers, synthetic polymer fibers, polyethylene or polypropylene fibers, porous ceramic materials, and cellulose fibers.

[0058] A fluid permeable element may be arranged on the lateral side of a replaceable cartridge. A portion of the fluid permeable element may protrude from the outer surface of the replaceable cartridge. The protrusion may be arranged on the lateral outer surface of the replaceable cartridge. The protrusion may protrude from the lateral outer surface by 0.05 to 5 millimeters, preferably 0.3 to 2 millimeters. Before the replaceable cartridge is connected to the atomizer unit, the user may remove a cap or seal that protects the protrusion during storage of the replaceable cartridge. The protrusion may include a distal surface. When the aerosol generation system is assembled, the distal surface may be positioned parallel to the vibrating element. When the aerosol generation system is assembled, the fluid permeable element may face the vibrating element.

[0059] When the aerosol generating system is assembled, the fluid permeable element may be in fluid communication with the vibrating element. When the aerosol generating system is assembled, there may be a gap between the fluid permeable element and the vibrating element. By providing a gap between the fluid permeable element and the vibrating element when the aerosol generating system is assembled, the gap may be filled with a liquid aerosol forming substrate by capillary force. The gap may be greater than 0 millimeters and less than 0.5 millimeters. The gap may be 0.01 millimeters to 0.5 millimeters, preferably 0.02 millimeters to 0.2 millimeters, and more preferably 0.1 millimeters.

[0060] The replaceable cartridge may include a retainer. The retainer may be located within the liquid reservoir. The retainer may include an internal volume. The internal volume may be in fluid communication with the liquid reservoir. The retainer may be configured to secure a fluid-permeable element. The retainer may be configured to secure a fluid-permeable element within the internal volume. The retainer may include an opening. The opening of the retainer may provide fluid communication with the liquid reservoir. The opening may be elongated. Providing an elongated opening in the retainer may provide better performance than having a circular shape, because the closure of the opening by air bubbles can be prevented.

[0061] A replaceable cartridge may include at least one sealing member. At least one sealing member may be arranged on the lateral outer surface of the replaceable cartridge. At least one sealing member may be arranged coaxially around a protrusion of a fluid-permeable element. At least one sealing member may include two coaxially arranged sealing rings. The two coaxially arranged sealing rings may be a first and a second sealing ring. The first sealing ring may have a smaller diameter than the second sealing ring.

[0062] At least one sealing member of the replaceable cartridge may face the vibrating transducer holder when the replaceable cartridge is connected to the atomizer module. At least one sealing member of the replaceable cartridge may have a diameter smaller than that of the vibrating transducer holder. At least one sealing member of the replaceable cartridge may be slightly compressed when the replaceable cartridge is connected to the atomizer module. At least one sealing member of the replaceable cartridge may provide an airtight seal with the atomizer module, preferably a liquid-sealed connection.

[0063] Preferably, the hardness of the sealing member may be within the range of 5 Shore A to 120 Shore A. More preferably, the hardness of the sealing member may be within the range of 20 Shore A to 40 Shore A.

[0064] Preferably, the Young's modulus of the sealing member may be within the range of 0.001 GPa to 1 GPa. More preferably, the Young's modulus of the sealing member may be within the range of 0.01 GPa to 0.1 GPa.

[0065] For example, the sealing member can be formed from materials such as neoprene rubber, natural rubber, silicone rubber, nitrile rubber, ethylene propylene diene monomer (EPDM) rubber, and styrene-butadiene rubber; silicone rubber is preferred due to its biocompatibility. Hardness and Young's modulus may also be affected by any processing step performed on the material used for the sealing member, for example, by the addition of one or more additives to the material selected for the sealing member.

[0066] Preferably, the axial thickness of the sealing member may be within the range of 1 millimeter to 10 millimeters. More preferably, the axial thickness of the sealing member may be within the range of 2 millimeters to 5 millimeters.

[0067] The atomizer module may include electrical connection means configured to be electrically connected to the main body. The main body may include at least one of a power supply, a control electronic device, and a pressure sensor.

[0068] The power supply unit may require recharging and may have a capacity to store sufficient energy for one or more user experiences; for example, the power supply unit may have a capacity sufficient to continuously generate aerosols for a period of about 6 minutes, or for a period that is a multiple of 6 minutes. In another example, the power supply unit may have a capacity sufficient to provide a predetermined number of puffs. The aerosol generating system may include a charging port for recharging the power supply unit.

[0069] The power supply unit may be a direct current (DC) power supply unit. In one embodiment, the power supply unit is a DC power supply unit having a DC supply voltage in the range of 2.5 volts to 4.5 volts and a DC supply current in the range of 1 Amp to 10 Amp (corresponding to a DC power supply unit in the range of 2.5 watts to 45 watts). The body may advantageously include a DC-AC inverter for converting the DC current supplied by the DC power supply unit into an alternating current. The DC / AC converter may include a Class D, Class C, or Class E power amplifier. The AC power output of the DC / AC converter is supplied to an induction coil.

[0070] The control electronic device may be configured to control the power supply from the power supply unit to the atomizer module to activate the vibrating transducer when in use.

[0071] The control electronic device may include one or more controller modules and / or processors configured to be used to generate an input drive signal to a vibrating transducer, as well as any computer-readable medium storing instructions to be used to generate the input drive signal. The computer-readable medium may include instructions to be used to generate the input drive signal by the controller modules and / or processors. The computer-readable medium may preferably be a non-transient computer-readable medium.

[0072] Preferably, the power source is rechargeable. For example, the power source may include a lithium-ion battery.

[0073] The main body may include a main body housing. The replaceable cartridge may include a cartridge housing. The atomizer module may include an atomizer housing. As at least one of the main body housings, the cartridge housing, the atomizer housing, and the rigid housing may be formed from a material such as a rigid plastic material (e.g., polypropylene, high-density polyethylene (HDPE), polyethylene terephthalate (PET), polyetheretherketone (PEEK), or polysulfone (PSU), but not limited thereto) or a metal material (e.g., aluminum, but not limited thereto).

[0074] The main body housing may be elongated. The main housing may comprise any suitable material or combination of materials. Examples of suitable materials include metals, alloys, plastics, or composite materials containing one or more of these materials, or thermoplastic resins suitable for food or pharmaceutical applications, such as polypropylene, polyetheretherketone (PEEK), and polyethylene. Preferably, the material is lightweight and non-brittle. The main body housing may include a user interface for activating the aerosol generating system, for example, a button for initiating heating of the aerosol generating system, or a display indicating the status of the aerosol generating system or the aerosol forming substrate.

[0075] The main body may include a puff sensor. The puff sensor may be located downstream of the flow restriction. The puff sensor may be a pressure sensor. The pressure sensor may include any suitable type of pressure sensor. The pressure sensor may be configured, for example, to detect when negative pressure is applied to the aerosol outlet when the user puffs. By providing the aerosol generator with a pressure sensor configured to detect pressure in the airflow path passing through the aerosol generator, the aerosol generator becomes able to detect when the user puffs the replaceable mouthpiece of the aerosol generator. The flow restriction may enable puff detection via the pressure sensor.

[0076] According to one embodiment of the present invention, a method for assembling an aerosol generating system as described herein is provided. The method may include at least one of the steps of reversibly connecting an atomizer module to a main body, reversibly connecting a replaceable mouthpiece to the atomizer module, and reversibly connecting a replaceable cartridge to the atomizer module from a lateral side of the aerosol generating system.

[0077] The mouthpiece can be connected to the atomizer module by inserting it from the lateral side of the aerosol generating system and then sliding it longitudinally toward the main body.

[0078] A replaceable cartridge can be connected to an atomizer module via a hinge mechanism. The replaceable cartridge can be connected to the atomizer module by latching the hinge projection to the rod. After latching the hinge projection to the rod, the replaceable cartridge can be rotated downward toward the distal end of the atomizer module. Subsequently, the replaceable cartridge can be locked into the atomizer module via a locking system.

[0079] The replaceable cartridge can be removed from the aerosol generating system by sliding the sliding part downward and removing the hinge protrusion from the rod of the atomizer module.

[0080] A non-limiting, non-comprehensive list of examples is provided below. Any one or more of the features of these embodiments may be combined with any one or more features of other embodiments, embodiments, or aspects described herein.

[0081] Example Ex1. As a mouthpiece for an aerosol generation system,

[0082] Mouse end portion including an aerosol outlet;

[0083] Aerosol inlet;

[0084] An aerosol channel extending between an aerosol inlet and an aerosol outlet;

[0085] Air inlet,

[0086] It includes an air inlet channel extending between the air inlet and the aerosol channel,

[0087] A mouthpiece in which the downstream portion of the air inlet channel is inclined relative to the aerosol channel.

[0088] Example Ex2. In Example Ex1, the aerosol channel comprises a downstream portion and an upstream portion, and a single bend between the upstream portion and the downstream portion, preferably the aerosol channel comprises only a single bend.

[0089] Example Ex3. In Example Ex2, the air inlet channel is coupled to the aerosol channel in the curved region of the aerosol channel, a mouthpiece.

[0090] Example Ex4. A mouthpiece according to Example Ex2 or Ex3, wherein the curve is at least 45 degrees, preferably about 90 degrees.

[0091] Example Ex5. A mouthpiece in any one of Examples Ex2 to Ex4, wherein the upstream portion of the aerosol channel is perpendicular to the longitudinal axis of the mouthpiece.

[0092] Example Ex6. In Example Ex5, the downstream portion of the aerosol channel is not perpendicular to the longitudinal axis of the mouthpiece, and preferably the downstream portion of the aerosol channel is parallel to the longitudinal axis of the mouthpiece.

[0093] Example Ex7. In Example Ex1, the aerosol channel is straight and perpendicular to the longitudinal axis of the mouthpiece.

[0094] Example Ex8. A mouthpiece configured such that, in any one of the preceding examples, during use of the aerosol generating system, the air inlet channel is configured to guide the surrounding air wall toward the aerosol flow within the aerosol channel.

[0095] Example Ex9. A mouthpiece in Example Ex8, wherein the surrounding air wall is configured to reduce, preferably prevent, direct contact of aerosol flow with the bend of Example Ex2.

[0096] Example Ex9b. In any one of the preceding examples, the mouthpiece is a replaceable mouthpiece configured to be reversibly connectable to an aerosol generating system.

[0097] Example Ex10. A mouthpiece configured such that, in any one of the preceding examples, during use of the aerosol generating system, the air inlet channel is configured to guide the surrounding air wall toward the wall of the aerosol channel.

[0098] Example Ex10a. A mouthpiece configured such that, in any one of the preceding examples, during use of the aerosol generating system, the air inlet channel directs an ambient air stream that is at least partially laminar toward the wall of the aerosol channel.

[0099] Example Ex11. In any one of the preceding examples, the downstream portion of the air inlet channel comprises a longitudinal axis forming an angle of 0 to 90 degrees, preferably 40 to 80 degrees, with respect to the longitudinal axis of the mouthpiece.

[0100] Example Ex12. In any one of the preceding examples, a mouthpiece configured such that the aerosol inlet is connectable to an atomizer module of an aerosol generating system.

[0101] Example Ex13. A mouthpiece configured such that, in any one of the preceding examples, the upstream portion of the air inlet channel is connected to a pressure sensor channel, and the pressure sensor channel is configured to be connectable to the main body of an aerosol generating system including a pressure sensor.

[0102] Example Ex14. A mouthpiece in which, in any one of the preceding examples, the air inlet includes a flow restriction.

[0103] Example Ex15. In any one of the preceding examples, the aerosol channel has a circular or elliptical shape, or a rectangular cross-section with rounded corners, a mouthpiece.

[0104] Example Ex16. A mouthpiece comprising, in any one of the preceding examples, a proximal portion and a distal portion, wherein the proximal portion comprises an aerosol channel and the distal portion comprises an air inlet channel.

[0105] Example Ex17. A mouthpiece in which, in any one of the preceding examples, the air inlet is arranged at the distal end of the mouthpiece, preferably on the lateral side of the distal end.

[0106] Example Ex18. In any one of the preceding examples, the mouthpiece having an air inlet channel having a cross-section with a non-circular shape.

[0107] Example Ex19. A mouthpiece in which, in any one of the preceding examples, the air inlet channel has a cross-section having an elliptical shape or a rectangular shape with rounded corners.

[0108] Example Ex20. As an aerosol generation system,

[0109] entity;

[0110] A mouthpiece according to any one of the preceding examples, wherein the mouthpiece is a replaceable mouthpiece;

[0111] Atomizer module; and

[0112] Aerosol generating system including replaceable cartridges.

[0113] Example Ex21. In Example Ex20, when the aerosol generating system is assembled, the atomizer module is positioned laterally to the aerosol generating system between the replaceable mouthpiece and the replaceable cartridge.

[0114] Example Ex22. In Example Ex20 or Ex21, the replaceable cartridge is reversibly insertable from the lateral side of the aerosol generating system.

[0115] Example Ex23. An aerosol generating system in any one of Examples Ex20 to Ex22, wherein the atomizer module comprises a piezoelectric actuator.

[0116] Example Ex24. An aerosol generating system in any one of Examples Ex20 to Ex23, wherein the atomizer module includes a vibration element.

[0117] Example Ex25. In Example Ex24, the vibrating element is one of a vibrating mesh, a vibrating membrane, or a vibrating plate, in an aerosol generating system.

[0118] Example Ex26. An aerosol generating system in which, in Example Ex24 or Ex25, a vibrating element is disposed on a vibrating plane, and when the aerosol generating system is assembled, the vibrating plane is not perpendicular to the longitudinal axis of the aerosol generating system, preferably the vibrating plane is parallel to or includes the longitudinal axis of the aerosol generating system.

[0119] Example Ex27. An aerosol generating system in any one of Examples Ex24 to Ex26, wherein the vibrating element has a flat shape, preferably a disc shape.

[0120] Example Ex28. An aerosol generating system in any one of Examples Ex20 to Ex27, wherein the aerosol generating system does not include a heating element.

[0121] Example Ex29. In any one of Examples Ex20 to Ex28, when the aerosol generating system is assembled, the aerosol generating system provides a liquid flow from a replaceable cartridge to an atomizer module in a direction perpendicular to the longitudinal axis of the aerosol generating system.

[0122] Example Ex30. An aerosol generating system in any one of Examples Ex20 to Ex29, wherein when the aerosol generating system is assembled, the main body is in direct contact with the atomizer module and the replaceable mouthpiece.

[0123] Example Ex31. An aerosol generating system in any one of Examples Ex20 to Ex30, wherein when the aerosol generating system is assembled, the replaceable cartridge does not come into direct contact with the main body.

[0124] Example Ex32. An aerosol generating system in any one of Examples Ex20 to Ex31, wherein the atomizer module is L-shaped.

[0125] Example Ex33. An aerosol generating system in any one of Examples Ex20 to Ex32, wherein the atomizer module comprises a lateral projection comprising a locking system configured to be lockably connected to a replaceable cartridge at the distal end.

[0126] Example Ex34. An aerosol generating system in any one of Examples Ex20 to Ex33, wherein a replaceable cartridge is configured to be reversibly connectable to an atomizer module.

[0127] Example Ex35. In Example Ex34, the replaceable cartridge is reversibly connectable to an atomizer module through at least one of a hinge mechanism, a slider mechanism, a snap-fit ​​mechanism, a bayonet mechanism, a magnetic mechanism, a spring-actuated mechanism, or a push-push mechanism, an aerosol generating system.

[0128] Example Ex36. An aerosol generating system according to Example Ex35, wherein a replaceable cartridge is reversibly connectable to an atomizer module through a hinge mechanism, the replaceable cartridge includes a hinge projection, and the atomizer module includes a receiving portion configured to receive the hinge projection of the replaceable cartridge.

[0129] Example Ex37. An aerosol generating system in Example Ex36, wherein the replaceable cartridge includes a hinged projection at the proximal end and the atomizer module includes a receiving portion at the proximal end.

[0130] Example Ex38. An aerosol generating system in any one of Examples Ex20 to Ex37, wherein the atomizer module is configured to be connectable to the main body, and preferably, the atomizer module is configured to be replaceable and reversibly connectable to the main body.

[0131] Example Ex39. An aerosol generating system in any one of Examples Ex20 to Ex38, wherein a replaceable mouthpiece is configured to be reversibly connectable to an atomizer module.

[0132] Example Ex40. In Example Ex39, the replaceable mouthpiece is reversibly connectable to an atomizer module through at least one of a hinge mechanism, a slider mechanism, a snap-fit ​​mechanism, a bayonet mechanism, a magnetic mechanism, a spring-actuated mechanism, or a push-push mechanism, an aerosol generating system.

[0133] Example Ex41. An aerosol generating system in which, in either Example Ex20 or Ex40, a replaceable cartridge comprises a liquid reservoir configured to store a liquid aerosol forming substrate.

[0134] Example Ex42. An aerosol generating system in Example Ex41, wherein the replaceable cartridge comprises a fluid-permeable element in fluid communication with a liquid reservoir.

[0135] Example Ex43. An aerosol generating system in Example Ex42, wherein the fluid permeable element has a cylindrical shape, preferably the fluid permeable element is cylindrical.

[0136] Example Ex44. An aerosol generating system in Example Ex42 or Ex43, wherein the fluid permeable element comprises or is made of a porous material, preferably the fluid permeable element comprises or is made of a porous wick material.

[0137] Example Ex45. An aerosol generating system in any one of Examples Ex42 to Ex44, wherein a fluid permeable element is arranged on a lateral side of a replaceable cartridge, and preferably, a portion of the fluid permeable element protrudes from the outer surface of the replaceable cartridge.

[0138] Example Ex46. An aerosol generating system in which, in Example Ex45, the protrusion includes an end surface, and when the aerosol generating system is assembled, the end surface is positioned parallel to the vibration element of Example Ex24.

[0139] Example Ex47. An aerosol generating system in any one of Examples Ex42 to Ex46, wherein when the aerosol generating system is assembled, the fluid permeable element faces the vibrating element of Example Ex24, and preferably the fluid permeable element is in fluid communication with the vibrating element of Example Ex24.

[0140] Example Ex48. An aerosol generating system in any one of Examples Ex42 to Ex47, wherein when the aerosol generating system is assembled, there is a gap between the fluid permeable element and the vibrating element, preferably the gap is 0.01 millimeters to 0.5 millimeters, more preferably 0.02 millimeters to 0.2 millimeters.

[0141] Example Ex49. An aerosol generating system in any one of Examples Ex20 to Ex48, wherein the atomizer module comprises electrical connection means configured to be electrically connected to the main body.

[0142] Example Ex50. An aerosol generating system in any one of Examples Ex20 to Ex49, wherein the main body comprises at least one of a power supply unit, a control electronic device, and a pressure sensor.

[0143] Example Ex51. A method for assembling an aerosol generating system according to any one of Examples Ex20 to Ex50,

[0144] Step of reversibly connecting the atomizer module to the main body,

[0145] Step of reversibly connecting a replaceable mouthpiece to an atomizer module,

[0146] A method comprising the step of reversibly connecting a replaceable cartridge to an atomizer module from a lateral side of an aerosol generating system.

[0147] Example Ex52. In Example Ex51, a replaceable mouthpiece is inserted from the lateral side of the aerosol generating system and then connected to the atomizer module by sliding longitudinally toward the main body.

[0148] Example Ex53. In Example Ex51 or Ex52, a method in which a replaceable cartridge is connected to an atomizer module through a hinge mechanism.

[0149] The features described in relation to one embodiment may be equally applied to other embodiments of the present invention. Brief explanation of the drawing

[0150] The present invention will be further explained with reference to the accompanying drawings merely as an example: Figure 1 illustrates an aerosol generation system. FIGS. 2a to 2e illustrate the connection mechanism of individual components of an aerosol generation system. FIGS. 3A and FIGS. 3B illustrate the cartridges of an aerosol generating system. FIGS. 3C illustrates the atomizer module. FIG. 4a illustrates the aerosol generation and airflow of an aerosol generation system. FIG. 4b and FIG. 4c illustrate the design of a mouthpiece. FIGS. 5a through 5f illustrate different designs of the mouthpiece of an aerosol generating system. Specific details for implementing the invention

[0151] FIG. 1 illustrates an aerosol generating system (10) in an assembled state. The aerosol generating system comprises a main body (12), a replaceable mouthpiece (14), an atomizer module (16), and a replaceable mouthpiece (18). The atomizer module (16) is located in a lateral direction (20) of the aerosol generating system (10) between the replaceable mouthpiece (14) and the replaceable cartridge (18). The lateral direction or axis (20) is perpendicular to the longitudinal axis (22) of the aerosol generating system (10). The atomizer module (16) is sandwiched between the replaceable mouthpiece (14) and the replaceable cartridge (18). The replaceable cartridge (18) is directly connected to the atomizer module (16), but is not connected to the main body (12) due to the L-shaped form of the atomizer module (16).

[0152] FIGS. 2a through 2c illustrate a connection mechanism of a replaceable cartridge (18) to an atomizer module (16). In FIG. 2a, the replaceable cartridge (18) is shown disassembled from the aerosol generating system (10). The replaceable cartridge (18) includes a hinge projection (24) on the proximal end of the replaceable cartridge (18). The hinge projection (24) is configured to be latched onto the rod (26) of the atomizer module (16). The distal end of the atomizer module (16) includes a locking system comprising a sliding portion (30) on a lateral projection (28). The sliding portion (30) is configured to be lockably connected to the hinge projection (24). The replaceable cartridge (18) includes a receiving portion (32) for receiving the sliding portion (30) of the atomizer module (16).

[0153] After the hinge protrusion (24) is latched onto the rod (26), the replaceable cartridge (18) can be rotated downward toward the distal end of the atomizer module (16) (see FIG. 2b). Then, as the sliding part (30) is received within the receiving part (32) of the replaceable cartridge (18), the replaceable cartridge (18) can be locked into the atomizer (16), resulting in the assembled state of the aerosol generating system shown in FIG. 2c. To remove the replaceable cartridge (18) from the atomizer module (16), the sliding part (30) must be pushed downward along the longitudinal axis (22) of the aerosol generating system (10).

[0154] FIGS. 2d and FIGS. 2e illustrate the connection of a replaceable mouthpiece (14) to an atomizer module (16). The replaceable mouthpiece (14) is connected to the atomizer module (16) by inserting it from the lateral side of the aerosol generating system (10) as indicated by arrow (1), and then sliding it longitudinally toward the main body (12) as indicated by arrow (2).

[0155] The replaceable mouthpiece (14) includes one proximal recess (34) at the proximal end of the replaceable mouthpiece and two distal recesses (36 and 36') at the distal end of the replaceable mouthpiece (14). The atomizer module (16) includes one proximal protruding connection (38) and two distal protruding connections (40 and 40'). The proximal recess (34) of the replaceable mouthpiece (14) is configured to receive the proximal protruding connection (38) of the atomizer module (18), and the distal recesses (36 and 36') are configured to receive the distal protrusions (40 and 40') of the atomizer module (16), respectively. The recesses (34, 36 and 36') of the replaceable mouthpiece (14) are shaped to provide the protruding connections (38, 40 and 40') of the atomizer module (16) to the sliding insert.

[0156] FIG. 3a illustrates an external view of a replaceable cartridge (18), and FIG. 3b illustrates a cross-sectional view of a replaceable cartridge (18). The replaceable cartridge (18) includes a hinge projection (24), first and second sealing rings (42 and 42'), a projection (44) of a fluid permeable element (46), and a retainer (48) located in a liquid reservoir (50). The liquid reservoir (50) includes a liquid aerosol forming substrate (not shown). The retainer (48) is configured to secure the fluid permeable element (46). The retainer (48) includes at least one elongated opening (52). The at least one elongated opening (52) of the retainer (48) provides fluid communication with the liquid reservoir (50).

[0157] The fluid permeable element (46) is a cylindrical porous wick. The protrusion (44) protrudes from the lateral outer surface (54) of the replaceable cartridge (18). The protrusion (44) may protrude from the lateral outer surface (54) by 0.05 to 5 millimeters, preferably 0.3 to 2 millimeters.

[0158] FIG. 3c illustrates an atomizer module (16) and shows an enlarged view of a vibrating transducer holder (56) including a washer-shaped vibrating transducer (58) that supports a vibrating membrane (60). The vibrating transducer holder (56) is overmolded around the vibrating transducer (58). Preferably, the vibrating transducer (58) is a piezoelectric actuator. The vibrating transducer holder (56) includes an electrical connection (62) configured to be connectable to a power supply of a main body (not shown).

[0159] When the aerosol generating system is assembled, the end surface (64) of the fluid permeable element (46) is positioned parallel to the vibrating element (60). When the aerosol generating system (10) is assembled (not shown in FIG. 3), the fluid permeable element (46) faces the vibrating element (60) of the atomizer module (16). In the assembled state, the fluid permeable element (46) and the vibrating element (60) are fluidly connected to each other.

[0160] FIG. 4a illustrates aerosol generation during the use of an aerosol generation system (10). A liquid aerosol-forming material flows from a liquid reservoir (50) through an opening in a retainer (48) toward and through a fluid-permeable element (46), as indicated by arrow (62). Then, the liquid aerosol-forming material flows from the end surface (64) of the fluid-permeable element (46) toward a vibrating membrane (60), where the aerosol is generated in the aerosol generation zone, and the aerosol flow is indicated by arrow (66). As can be seen in FIG. 4a, in the assembled state of the aerosol generation system (10), the vibrating membrane (60) is arranged parallel to the longitudinal axis (20) of the aerosol generation system (10). Preferably, a small gap is provided between the vibrating membrane (60) and the end surface (64) of the fluid-permeable element. The spacing may be 0.01 millimeters to 0.5 millimeters, preferably 0.02 millimeters to 0.2 millimeters.

[0161] The replaceable mouthpiece (14) includes a mouthpiece end portion comprising an aerosol outlet (68), an aerosol inlet (70) (see FIG. 4b), an aerosol channel (72) extending between the aerosol inlet (70) and the aerosol outlet (68) (see FIG. 4c), an air inlet (74) (see FIG. 4c), and an air inlet channel (76) extending between the air inlet (74) and the aerosol channel (72). The downstream portion (78) of the air inlet channel (76) is inclined with respect to the aerosol channel (72).

[0162] The downstream portion (78) of the air inlet channel (76) includes a longitudinal axis (80). The longitudinal axis (80) of the downstream portion (78) of the air inlet channel (76) forms an angle (82) with the longitudinal axis of the aerosol generating system (22) parallel to the longitudinal axis of the replaceable mouthpiece (not shown). The angle (82) is 0 to 90 degrees, preferably 40 to 80 degrees.

[0163] During use of the aerosol generation system (10), the air inlet channel (76) directs the surrounding air wall (84) toward the aerosol flow (66) within the aerosol channel (72) as indicated by the arrow (86).

[0164] The aerosol inlet (70) is axially surrounded by a replaceable mouthpiece sealing member (90) to provide a hermetic and / or liquid seal with the atomizer module (16).

[0165] The air inlet channel (76) can be connected to the pressure sensor channel (92). The pressure sensor channel (92) is configured to be connectable to the main body (12) including the pressure sensor (94).

[0166] FIGS. 5a through 5c illustrate external views of aerosol generating systems having different configurations of the mouse end portion. FIG. 5a illustrates the previously discussed replaceable mouthpiece (16). FIG. 5b illustrates the replaceable mouthpiece (16') having an inclined aerosol channel (72'). FIG. 5c illustrates the replaceable mouthpiece (16'') having a straight but laterally arranged aerosol channel (72''). The aerosol channel (72) of the replaceable mouthpiece illustrated in FIG. 5a includes a bend of about 90 degrees. The aerosol channel (72) of the replaceable mouthpiece illustrated in FIG. 5ab includes a bend of about 45 degrees. The aerosol channel (72) of the replaceable mouthpiece illustrated in FIG. 5c has no bend and is therefore straight.

[0167] FIGS. 5d through 5f are cross-sectional views of the system illustrated in FIGS. 5a through 5c. As can be seen from all configurations of the aerosol channel, the downstream portions (78, 78' and 78'') are inclined with respect to the aerosol channel.

Claims

Claim 1 A mouthpiece for an aerosol generating system, comprising: a mouth end portion including an aerosol outlet; an aerosol inlet; an aerosol channel extending between the aerosol inlet and the aerosol outlet; an air inlet portion, and an air inlet portion channel extending between the air inlet portion and the aerosol channel, wherein the downstream portion of the air inlet portion channel is inclined with respect to the aerosol channel, and during use of the aerosol generating system, the air inlet portion channel is configured to guide a wall of ambient air toward a wall of the aerosol channel. Claim 2 A mouthpiece according to claim 1, wherein the aerosol channel comprises a downstream portion and an upstream portion, and a single bend between the upstream portion and the downstream portion, preferably the aerosol channel comprises only a single bend. Claim 3 A mouthpiece according to paragraph 2, wherein the air inlet channel is coupled to the aerosol channel in a curved region of the aerosol channel, preferably the curved region is at least 45 degrees, preferably about 90 degrees. Claim 4 A mouthpiece according to claim 2 or 3, wherein the upstream portion of the aerosol channel is perpendicular to the longitudinal axis of the mouthpiece, preferably the downstream portion of the aerosol channel is not perpendicular to the longitudinal axis of the mouthpiece, and more preferably the downstream portion of the aerosol channel is parallel to the longitudinal axis of the mouthpiece. Claim 5 A mouthpiece according to any one of claims 1 to 4, wherein, during use of the aerosol generating system, the air inlet channel is configured to guide the surrounding air wall toward the aerosol flow within the aerosol channel. Claim 6 A mouthpiece according to claim 5, wherein the surrounding air wall is configured to reduce, preferably prevent, the aerosol flow from coming into direct contact with the bend of claim 2. Claim 7 A mouthpiece according to any one of claims 1 to 6, wherein the mouthpiece is a replaceable mouthpiece configured to be reversibly connectable to an aerosol generating system. Claim 8 A mouthpiece according to any one of claims 1 to 7, wherein the downstream portion of the air inlet channel comprises a longitudinal axis forming an angle of 0 to 90 degrees, preferably 40 to 80 degrees, with respect to the longitudinal axis of the mouthpiece. Claim 9 A mouthpiece according to any one of claims 1 to 8, wherein the aerosol inlet is configured to be connectable to the atomizer module of the aerosol generating system. Claim 10 A mouthpiece according to any one of claims 1 to 9, comprising a proximal portion and a distal portion, wherein the proximal portion comprises the aerosol channel and the distal portion comprises the air inlet channel. Claim 11 A mouthpiece according to any one of claims 1 to 10, wherein the air inlet is arranged at the distal end of the mouthpiece, preferably on the lateral side of the distal end. Claim 12 A mouthpiece according to any one of claims 1 to 11, wherein the air inlet channel has a non-circular cross-section. Claim 13 An aerosol generating system comprising: a main body; a mouthpiece according to any one of claims 1 to 12, wherein the mouthpiece is a replaceable mouthpiece; an atomizer module; and a replaceable cartridge. Claim 14 In claim 13, when the aerosol generating system is assembled, the atomizer module is positioned laterally to the aerosol generating system between the replaceable mouthpiece and the replaceable cartridge, and preferably, the replaceable cartridge is reversibly insertable from the lateral side of the aerosol generating system. Claim 15 An aerosol generating system according to claim 13 or 14, wherein the atomizer module comprises a vibrating element, preferably the vibrating element is disposed on a vibrating surface, and when the aerosol generating system is assembled, the vibrating surface is not perpendicular to the longitudinal axis of the aerosol generating system, more preferably the vibrating surface is parallel to or includes the longitudinal axis of the aerosol generating system.

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