Aerosolization module

Abstract

An aerosolization module (40) removably insertable into the housing (20) of an aerosol generating device is disclosed. The aerosolization module (40) comprises a vibratable transducer (41) for aerosolizing a liquid aerosol-forming substrate and one or more conductive contacts (401) in electrical communication with the vibratable transducer (41). The one or more conductive contacts (401) are configured for removable electrical connection with corresponding contacts (201) of the housing (20) of the aerosol generating device. The aerosolization module (40) further comprises a membrane (42). The membrane (42) comprises an aerosol-generation zone (43). The vibratable transducer (41) is operatively coupled to the membrane (42) for vibrating the membrane in use. The membrane (42) is formed of a conductive material and a portion of the membrane forms at least one of the one or more conductive contacts.

Description

[Technical Field]

[0001] This disclosure relates to an aerosolizing module for use in an aerosol generator. This disclosure also relates to an aerosol generating system or apparatus that includes such an aerosolizing module. In addition, this disclosure relates to a kit of components that, when assembled, form an aerosol generator. [Background technology]

[0002] A well-known vibrating nebulizer for aerosolizing a liquid aerosol-forming substrate employs a membrane with a nozzle distribution. The membrane is connected to a vibrable transducer, which in turn is fixedly connected to the nebulizer's controller and power supply. An electrical signal supplied to the transducer by the controller is converted by the transducer into a vibration output, which induces vibration of the membrane. When the membrane comes into contact with the liquid aerosol-forming substrate, the vibration of the membrane pushes the liquid aerosol-forming substrate through the nozzle, forming aerosol droplets. The vibration of the membrane functions to generate aerosol droplets. In this way, such a well-known vibrating nebulizer provides thermal aerosol generation. As used herein, the term “thermal aerosol generation” means that aerosol droplets are formed from the liquid aerosol-forming substrate without requiring the substrate to be heated. However, with continuous use, the membrane of such a well-known vibrating nebulizer may become clogged with residue from the substrate or external contaminants. This residue can affect the quality of the aerosol droplet pattern produced by the membrane. Cleaning the membrane to remove this residue can be difficult for several reasons. For example, membranes are typically fragile structures, and therefore can be difficult to clean without causing permanent damage to the membrane. Furthermore, membranes can also be difficult to access from the outside of the nebulizer. For instance, to protect the membrane from damage, it may be located deep within the nebulizer housing. These difficulties can result in users discarding a vibrating nebulizer that is perfectly functional in all other respects except for having residue on the membrane. [Overview of the project] [Problems that the invention aims to solve]

[0003] This disclosure relates to the provision of an aerosolization module for use in an aerosol generator that addresses one or more of the problems described above. [Means for solving the problem]

[0004] According to one aspect of the present disclosure, an aerosolizing module is provided that is removable and insertable into the housing of an aerosol generator. The aerosolizing module comprises a vibrable transducer for aerosolizing a liquid aerosol-forming substrate and one or more conductive contacts electrically communicating with the vibrable transducer. The one or more conductive contacts are configured for removable electrical connections to corresponding contacts in the housing of the aerosol generator.

[0005] As used herein, the term “vibrating transducer” is used to refer to a device configured to convert energy from an initial form to a different form, where the different form includes or consists of a vibration output.

[0006] As used herein, the term “aerosol generator” is used to describe a device that interacts with an aerosol-forming substrate to generate an aerosol. Preferably, the aerosol generator is a smoking device that interacts with an aerosol-forming substrate to generate an aerosol that can be directly inhaled into the user’s lungs through the user’s mouth.

[0007] As used herein, the term "aerosol-forming substrate" refers to a substrate consisting of, or containing, an aerosol-forming material having the ability to release volatile compounds upon heating in order to generate aerosols.

[0008] As used herein, the term “liquid” refers to a substance provided in liquid form and includes substances provided in gel form.

[0009] The feature of a removable aerosolizing module that can be inserted into the housing of the aerosol generator allows the aerosolizing module to be removed from the housing of the device and replaced. Therefore, if the aerosolizing module becomes clogged with residue from the substrate or other debris during use, it is possible to remove the aerosolizing module from the housing and replace it. In this way, the aerosol generator may be reusable with other aerosolizing modules. Providing one or more conductive contacts configured for removable electrical connections to corresponding contacts in the housing of the device allows electrical signals to be transmitted from the housing to drive the transducer, and the removable electrical connectivity of the contacts facilitates the easy removal and replacement of the aerosolizing module. The use of conductive contacts configured for removable electrical connections to corresponding contacts in the housing of the device is in contrast to well-known nebulizers that may use soldered wire connections intended to provide a permanent connection between the nebulizer's power supply and the transducer.

[0010] At least one of the one or more conductive contacts may form part of a vibrating transducer. In this way, an electrical signal may be transmitted directly to the transducer.

[0011] Preferably, the aerosolizing module may further comprise a membrane. The membrane may comprise an aerosol-generating zone. A vibrating transducer may be operably coupled to the membrane to vibrate the membrane during use. When the aerosolizing module is employed as part of an aerosol generator, a liquid aerosol-forming substrate supplied to the aerosol-generating zone of the membrane may be aerosolized through the vibration of the membrane. Advantageously, the aerosol-generating zone may be provided with a plurality of nozzles for passages of the liquid aerosol-forming substrate through it. As used herein, the term “nozzle” is used to refer to an opening, hole, or pore through the membrane that provides a passage for the liquid aerosol-forming substrate to move through the membrane. For example, and without limitation, during use of the aerosol generator, the liquid aerosol-forming substrate may be brought into contact with a first side of the membrane. The vibration of the membrane may result in a portion of the liquid substrate being forced and discharged through the nozzles so as to be released as a spray of aerosol droplets from a second opposite side of the membrane. The nozzles may be individually sized and arranged relative to one another to provide a predetermined aerosol droplet formation pattern.

[0012] The nozzle is preferably circular in shape. A circular shape is preferable because it maximizes the ratio of the area to the circumference of each nozzle, thus reducing viscous resistance and boundary layer buildup. However, it has been found that the use of elliptical nozzles also yields acceptable performance in terms of the resulting aerosol droplet formation.

[0013] The film may be formed from any suitable material. For example, and without limitation, the film may be formed from a polymer material, thereby providing the advantages of reduced mass and inertia. However, the film may be formed from any other suitable material, such as a metallic material. The film may be a composite of two or more different materials. The choice of material used for the film may be influenced by the specific liquid aerosol-forming substrate used in the aerosolization module and intended to be aerosolized by the aerosolization module. For example, it is very desirable to choose a material for the film that does not chemically react or decompose as a result of contact with the chosen liquid aerosol-forming substrate. Just as an example, the film may be formed from palladium, stainless steel, copper-nickel alloy, polyimide, polyamide, silicon, or aluminum nitride.

[0014] Advantageously, the membrane may be circular in shape when viewed in plan view. A circular membrane has proven beneficial when the aerosolizing module forms part of a handheld, elongated aerosol generator intended for use as a smoking device. However, the membrane may alternatively be rectangular in plan view.

[0015] The film may be formed of a conductive material. A portion of the film may form at least one of one or more conductive contacts. In this way, the film itself may serve as a means of electrically connecting a vibrable transducer to the housing of an aerosol generating article. One or more conductive contacts may comprise a first conductive contact and a second conductive contact. The first portion of the film may form the first conductive contact, and the second portion of the film may form the second conductive contact.

[0016] A vibrating transducer may include at least one actuator. Preferably, the actuator is a piezoelectric actuator. Piezoelectric actuators are preferred 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 electrical to acoustic / mechanical output. Furthermore, piezoelectric actuators are available in a wide variety of materials and shapes. In the case of a piezoelectric actuator, inputting an electrical drive signal to the piezoelectric actuator results in a mechanical output in the form of a vibration signal. As described above, when the vibrating transducer of an aerosolizing module is operably coupled to a membrane, the use of a piezoelectric actuator within the transducer or as a transducer provides an energy-efficient means of inducing vibrations of the membrane to aerosolize the liquid aerosol-forming substrate. However, as an alternative to the use of piezoelectric actuators, actuators (may include one or more) comprising electromagnetic elements, magnetostrictive elements, or electrostrictive elements may also be employed in vibrating transducers.

[0017] As described above, if the vibrable transducer of the aerosolization module is operably connected to the membrane, the vibrable transducer may include an annular actuator assembly connected to the surface of the membrane so as to surround the aerosol generation zone. The annular actuator assembly may include one or more actuators. The annular actuator assembly may include a single annular actuator. Alternatively, the annular actuator assembly may include two or more actuators arranged circumferentially relative to each other to define the annular portion surrounding the aerosol generation zone. As described in the preceding paragraph, the actuator(s) may take the form of one or more piezoelectric actuators. Alternatively, the actuator(s) may include one or more electromagnetic elements, magnetostrictive elements, or electrostrictive elements.

[0018] In another embodiment applicable when a vibrable transducer of an aerosolization module is operably coupled to a membrane, the vibrable transducer may comprise a pair of annular actuator assemblies provided as a first annular actuator assembly and a second annular actuator assembly. Each of the first and second annular actuator assemblies may comprise one or more actuators. Furthermore, the first and second annular actuator assemblies may be coupled to opposing surfaces of the membrane such that the annular portion of the membrane is constrained between the first and second annular actuator assemblies, the annular portion surrounding the aerosol generation zone. One or more conductive contacts comprise one or more first conductive contacts electrically communicating with the first annular actuator assembly and one or more second conductive contacts electrically communicating with the second annular actuator assembly. By constraining the opposing surfaces of the membrane between the first and second annular actuator assemblies, the membrane can be gripped between the actuator assemblies, thereby efficiently transmitting vibration outputs from the actuator assemblies to the membrane to induce vibration of the membrane. Either or both of the first and second annular actuator assemblies may comprise a single annular actuator. Alternatively, either or both of the first and second actuator assemblies may comprise two or more actuators arranged circumferentially relative to each other to define the annular portion. As described in the preceding paragraph, the actuator(s) may take the form of one or more piezoelectric actuators. Alternatively, the actuator(s) may comprise one or more electromagnetic elements, magnetostrictive elements, or electrostrictive elements.

[0019] Conveniently, both the first and second conductive contacts may be located adjacent to each other. The adjacent positioning of the first and second conductive contacts helps facilitate a secure electrical connection between the corresponding contacts of the aerosol generator housing and the contacts of the aerosolizing module. Preferably, the first and second conductive contacts may be located on a common surface of the aerosolizing module. Providing the first and second conductive contacts on such a common surface also helps facilitate a secure electrical connection between the corresponding contacts of the aerosol generator housing and the contacts of the aerosolizing module. In the first embodiment, the first and second conductive contacts may be located on the peripheral side surface of the aerosolizing module, in this scenario the peripheral side surface forms a “common surface”. In the second embodiment, the first and second conductive contacts may be located on the top or bottom surface of the aerosolizing module, in this scenario the top or bottom surface forms a “common surface”. The upper or lower surface may be the surface of one or both of the vibrating transducer and / or the membrane, or may include both. The terms “upper” and “lower” are used in a relative sense.

[0020] At least one of the one or more conductive contacts may have a planar contact area. The use of planar contact areas on one or more conductive contacts facilitates sliding mating between the planar contact area of ​​each conductive contact and the corresponding contact on the housing of the aerosol generator. This facilitation of sliding mating is consistent with the characteristics of an aerosolizing module that can be removablely inserted into the housing of the aerosol generator. At least one of the one or more conductive contacts may form part of an elastic connector. The use of an elastic connector may facilitate a secure electrical connection between the conductive contacts of the aerosolizing module and the corresponding contacts on the housing of the aerosol generator. Furthermore, the elasticity of the connector may result in each conductive contact being forced against the corresponding contact on the housing.

[0021] In a second aspect of the present disclosure, an aerosol generating system is provided. The aerosol generating system comprises an aerosolizing module as outlined in relation to the first aspect of the present disclosure. The aerosol generating system further comprises an elongated housing, the elongated housing comprising a power supply and one or more conductive contacts corresponding to one or more conductive contacts of the aerosolizing module. The elongated housing is configured to removably receive the aerosolizing module in order to establish a removable electrical connection between the housing and the corresponding conductive contacts of the aerosolizing module, thereby electrically connecting the elongated housing to a vibrable transducer. The assembly of the aerosolizing module with the elongated housing forms an aerosol generating device.

[0022] In this way, the elongated housing is electrically connected to the vibrable transducer of the aerosolizing module via corresponding conductive contacts on the housing and the aerosolizing module. Accordingly, a power supply may transmit power to the vibrable transducer of the aerosolizing module via the corresponding contacts.

[0023] In addition, the aerosol generation system may also include a power supply and a controller that can be coupled to a vibrating transducer, the controller configured to generate a drive signal to the vibrating transducer. In one embodiment, the controller may be housed in an elongated housing, in which case the drive signal generated by the controller may be communicated to the vibrating transducer via corresponding conductive contacts in the housing and the aerosolization module. Having both the power supply and controller in an elongated housing may help reduce the complexity and cost of the aerosolization module. In one alternative example, the controller may form part of the aerosolization module. In this alternative scenario, the power supply may provide power to the controller via corresponding conductive contacts in the housing and the aerosolization module, thereby enabling the controller (which is part of the aerosolization module) to generate a drive signal and communicate the drive signal to the vibrating transducer. Making the controller part of the aerosolization module may also allow the use of different aerosolization modules, each configured to generate distinct aerosol emission patterns, depending on the configuration of the controller in each aerosolization module. The term “controller” encompasses not only control electronics and processors (or multiple processors) configured for use in generating drive signals to a vibrable transducer, but also any computer-readable medium that stores instructions for use in generating drive signals. For example, a controller may take the form of control electronics and a non-temporary computer-readable medium (such as a computer memory module), and the control electronics comprises a control unit connected to or encompassing the non-temporary computer-readable medium. The control unit itself may encompass or be connected to a computer processor. The non-temporary computer-readable medium may contain instructions for use in generating drive signals.

[0024] The power source is preferably rechargeable. For example, the power source may include a lithium-ion battery.

[0025] In this second embodiment, the aerosolizing module forms a replaceable component of the aerosol generating system. The ability to remove and replace the aerosolizing module from the elongated housing stems from the presence of a removable electrical connection between the aerosolizing module and the corresponding conductive contacts of the elongated housing.

[0026] The aerosol generating system preferably forms a smoking system configured to generate inhalable aerosols non-thermally. Since no heat is used in non-thermal aerosol generation, the possibility of generating harmful compounds is reduced, as harmful compounds are typically associated with chemical reactions that occur at higher temperatures. However, alternatively, the aerosol generating system may also include a heater element configured to apply heat to a liquid aerosol-forming substrate. Such a heater element may conveniently form part of the aerosolization module.

[0027] The elongated housing may be sized and shaped to allow the housing to be held by the user. The use of an elongated housing corresponds to the geometric profiles associated with traditional cigarettes and various e-cigarettes.

[0028] The housing may have a first housing section and a second housing section, the first housing section containing the power supply and the second housing section comprising a mouthpiece. The corresponding axial mating ends of the first and second housing sections may be configured to connect to each other. Either the axial mating end of the first or second housing section may have a seat for receiving an aerosolizing module. Connecting the corresponding axial mating ends of the first and second housing sections together may facilitate a secure connection between the aerosolizing module and the housing. During use, the user may engage their mouth with the mouthpiece and thereby inhale aerosol droplets emitted from the aerosolizing module. In one embodiment, the first and second housing sections may be hinged to each other. Alternatively, or additionally, each of the first and second housing sections may be provided with a magnetic attraction member so that the corresponding axial mating ends of the first and second housing sections are magnetically attracted to each other, thereby securely connecting the aerosolizing module to the housing. A "magnetic attraction member" refers to a member that generates a magnetic field (i.e., a magnet), or a member that is magnetically attracted to a magnetic field. Preferably, at least one of the magnetic attraction members of the first housing portion and the second housing portion is a magnet. Conveniently, the magnetic attraction members of the first housing portion and the second housing portion are magnets of opposite polarity.

[0029] At least one of the conductive contacts of the housing may be located within the seat. In this way, correctly positioning the aerosolizing module within the seat results in an electrical connection between the aerosolizing module and the corresponding conductive contact of the elongated housing. The seat and the aerosolizing module may be keyed to each other so that the aerosolizing module can be received within the seat in a given orientation. Keying the seat and the aerosolizing module to each other may provide an additional assurance that the module can be received within the seat of the housing, thereby electrically connecting the corresponding electrical contacts of the module and the housing.

[0030] The side walls of the elongated housing may be provided with openings that define access openings to a cavity extending into the housing. One or more conductive contacts of the housing may be located within the cavity. The corresponding conductive contacts of the housing and the aerosolizing module may also be configured such that insertion of the aerosolizing module into the cavity results in an electrical connection between the corresponding contacts of the housing and the aerosolizing module. Providing such openings in the side walls of the housing facilitates the sliding insertion (or removal) of the aerosolizing module into the elongated housing. The system may further include a cradle configured to receive the aerosolizing module, which is removablely insertable into the cavity through the access opening. The cradle will serve as a holder for the aerosolizing module. The cradle and the aerosolizing module may be keyed together so that the aerosolizing module can be received into the cradle in a predetermined orientation. Keying the cradle and the aerosolizing module to each other may provide an additional assurance that the module is received within the cradle in a position that ensures electrical connection between the aerosolizing module and the corresponding contacts of the elongated housing when the cradle is inserted into the cavity. The cradle may be slidably coupled to the elongated housing. In addition, either or both of the cradle and the housing may be configured to prevent the cradle from disengaging from the housing. In one embodiment, one of the cradle or the housing may include one or more lugs adapted to engage with a corresponding portion of the other of the cradle or housing to prevent the cradle from completely disengaging from the housing. Preferably, the cradle may be contoured to define a substantially coplanar mating with the sidewall of the elongated housing after the cradle has been inserted into the cavity. Providing a substantially coplanar mating of the cradle with the sidewall of the elongated housing may ensure that the user can hold the elongated housing without discomfort.

[0031] The aerosol generation system may further include a storage unit for a liquid aerosol-forming substrate. The storage unit may form part of the aerosolization module, and the storage unit is in fluid communication with a vibrable transducer. Thus, removal and replacement of the aerosolization module results in a system provided with both a new vibrable transducer and a new storage unit for the liquid aerosol-forming substrate. Alternatively, the storage unit for the liquid aerosol-forming substrate may be provided as a cartridge distinct from the aerosolization module, the cartridge being removablely insertable into a housing, thereby ensuring that the storage unit is in fluid communication with the vibrable transducer after the cartridge is inserted into the housing and the aerosolization module is received within the housing. Providing such a cartridge, which is removablely insertable into the housing and distinct from the aerosolization module, allows for the replacement of the storage unit for the liquid aerosol-forming substrate independently of the aerosolization module.

[0032] The liquid aerosol-forming substrate used may take many different forms. The following paragraphs describe various exemplary and non-limiting materials and compositions for the liquid aerosol-forming substrate.

[0033] The liquid aerosol-forming substrate may contain nicotine. The nicotine-containing liquid aerosol-forming substrate may be a nicotine salt matrix. The liquid aerosol-forming substrate may contain plant-derived materials. The liquid aerosol-forming substrate may contain tobacco. The liquid aerosol-forming substrate may contain homogenized tobacco materials. The liquid aerosol-forming substrate may contain non-tobacco-containing materials. The liquid aerosol-forming substrate may contain homogenized plant-derived materials.

[0034] The liquid aerosol-forming substrate may contain at least one aerosol-forming compound. The aerosol-forming compound is any suitable and well-known compound or mixture of compounds that facilitates the formation of a high-density, stable aerosol upon use. Suitable aerosol-forming compounds are well-known in the art and include, but are not limited to, polyhydric alcohols (e.g., triethylene glycol, 1,3-butanediol, glycerin), esters of polyhydric alcohols (e.g., glycerol monoacetate, diacetate, or triacetate), and aliphatic esters of monocarboxylic acids, dicarboxylic acids, or polycarboxylic acids (e.g., dimethyl dodecanediol, dimethyl tetradecanediol). The aerosol-forming compound may be a polyhydric alcohol or a mixture thereof (e.g., triethylene glycol, 1,3-butanediol, glycerin). The liquid aerosol-forming substrate may also contain other additives and components (e.g., flavorings).

[0035] The liquid aerosol-forming substrate may contain water.

[0036] The liquid aerosol-forming substrate may contain nicotine and at least one aerosol-forming agent. The aerosol-forming agent may contain glycerin. The aerosol-forming agent may contain propylene glycol. The aerosol-forming agent may contain both glycerin and propylene glycol. The liquid aerosol-forming substrate may have a nicotine concentration of about 2% to about 10%.

[0037] Preferably, the corresponding contacts of the elongated housing and the aerosolizing module may be configured to define a slidable joint between the corresponding contacts. Providing such a slidable joint is consistent with the characteristics of the aerosolizing module, which can be removably inserted into the elongated housing of the aerosol generator. For example, the conductive contacts of either the elongated housing or the aerosolizing module may have a planar contact area, as described above with respect to the first aspect of the present disclosure.

[0038] Conveniently, at least one of the one or more conductive contacts of the elongated housing or aerosolized module forms part of an elastic connector. The elastic connector may be configured to deform elastically upon contact with the corresponding contact of the other elongated housing or aerosolized module. As described above with respect to the first embodiment, the use of an elastic connector may facilitate a secure electrical connection between the corresponding conductive contacts of the aerosolized module and the elongated housing.

[0039] In a third aspect of the present disclosure, a kit of components is provided, which, when assembled, form an aerosol generator. The components comprise a first aerosolizing module and a second aerosolizing module, each of which is according to the first aspect of the present disclosure described above. The components further comprise an elongated housing. The elongated housing contains a power supply and one or more conductive contacts corresponding to one or more conductive contacts of the aerosolizing modules. The elongated housing is configured to removably receive one of the first aerosolizing modules and the second aerosolizing module in order to establish a removable electrical connection between the housing and the corresponding conductive contacts of each aerosolizing module, thereby electrically connecting the elongated housing to a vibrable transducer. The first aerosolizing module and the second aerosolizing module are interchangeable within the elongated housing so as to be removably received within the elongated housing. The first aerosolization module is configured to generate a first aerosol emission pattern, and the second aerosolization module is configured to generate a second aerosol emission pattern, wherein the first and second aerosol emission patterns are different from each other. The provision of such a kit allows the user to swap between the first and second aerosolization modules according to the user's preferred aerosol emission pattern. The first and second aerosol emission patterns may differ in one or more of the following characteristics, namely aerosol droplet size and aerosol droplet density (i.e., number of aerosol droplets per unit volume).

[0040] In other embodiments, the kit may include an additional aerosolizing module having an aerosol release pattern different from either the first or second aerosolizing module. In this way, the user may be provided with additional flexibility to experience different aerosol release patterns.

[0041] 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.

[0042] Example 1: An aerosolizing module that is removablely insertable into the housing of an aerosol generator, comprising: a vibrating transducer for aerosolizing a liquid aerosol-forming substrate; and one or more conductive contacts electrically communicating with the vibrating transducer, the conductive contacts being configured for removable electrical connection to corresponding contacts in the housing of the aerosol generator. Example 2: The aerosolizing module according to Example 1, wherein at least one of one or more conductive contacts forms part of a vibrable transducer. Example 3: An aerosolizing module according to either Example 1 or Example 2, wherein the aerosolizing module further comprises a membrane, the membrane comprises an aerosol generation zone, and a vibrable transducer is operably connected to the membrane to vibrate the membrane when in use. Example 4: The aerosolizing module according to Example 3, wherein the aerosol generation zone is provided with a plurality of nozzles for passages of a liquid aerosol-forming substrate through which the liquid aerosol-forming substrate passes. Example 5: An aerosolizing module according to either Example 3 or Example 4, wherein the film is formed of a conductive material and a portion of the film forms at least one of one or more conductive contacts. Example 6: The aerosolization module according to Example 5, wherein one or more conductive contacts comprise a first conductive contact and a second conductive contact, with a first portion of the film forming the first conductive contact and a second portion of the film forming the second conductive contact. Example 7: An aerosolization module according to any one of Examples 1 to 6, wherein a vibrating transducer comprises at least one actuator. Example 8: An aerosolization module according to any one of Examples 3 to 6, comprising a vibrable transducer connected to the surface of a membrane and an annular actuator assembly surrounding an aerosol generation zone, wherein the annular actuator assembly comprises one or more actuators. Example 9: The aerosolization module according to Example 8, wherein the annular actuator assembly comprises a single annular actuator. Example 10: The aerosolization module according to Example 8, wherein the annular actuator assembly comprises two or more actuators arranged circumferentially relative to each other to define an annular portion surrounding the aerosol generation zone. Example 11: An aerosolization module according to any one of Examples 3 to 10, wherein a vibrable transducer comprises a pair of annular actuator assemblies provided as a first annular actuator assembly and a second annular actuator assembly, each of the first and second annular actuator assemblies comprising one or more actuators, the first and second annular actuator assemblies being arranged to connect to opposing surfaces of a membrane, thereby constraining the annular portion of the membrane between the first and second annular actuator assemblies, the annular portion surrounding an aerosol generation zone, and comprising one or more conductive contacts, one or more first conductive contacts electrically communicating with the first annular actuator assembly and one or more second conductive contacts electrically communicating with the second annular actuator assembly. Example 12: The aerosolization module according to Example 11, wherein either or both of the first annular actuator assembly and the second annular actuator assembly comprise a single annular actuator. Example 13: The aerosolization module according to Example 11, wherein either or both of the first annular piezoelectric assembly and the second annular piezoelectric assembly comprise two or more piezoelectric actuators arranged circumferentially relative to each other so as to define an annular portion. Example 14: An aerosolization module according to any one of Examples 11 to 13, wherein the first conductive contact and the second conductive contact are arranged adjacent to each other. Example 15: An aerosolizing module according to any one of Examples 11 to 14, wherein the first conductive contact and the second conductive contact are located on a common surface of the aerosolizing module. Example 16: The aerosolizing module according to Example 15, wherein the first conductive contact and the second conductive contact are located on the peripheral side surface of the aerosolizing module. Example 17: The aerosolizing module according to Example 15, wherein the first conductive contact and the second conductive contact are located on the upper or lower surface of the aerosolizing module. Example 18: An aerosolizing module according to any one of Examples 1 to 17, wherein at least one of the one or more conductive contacts has a planar contact area. Example 19: An aerosolizing module according to any one of Examples 1 to 18, wherein at least one of one or more conductive contacts forms part of an elastic connector. Example 20: An aerosol generating system comprising an aerosolizing module according to any one of Examples 1 to 19, a power supply, and an elongated housing containing one or more conductive contacts corresponding to one or more conductive contacts of the aerosolizing module, wherein the elongated housing is configured to removably receive the aerosolizing module in order to establish a removable electrical connection between the housing and the corresponding conductive contacts of the aerosolizing module, thereby electrically connecting the elongated housing to a vibrable transducer, and the assembly of the aerosolizing module having the elongated housing forms an aerosol generating device. Example 20a: An aerosol generator comprising an aerosolizing module according to any one of Examples 1 to 19, a power supply, and an elongated housing containing one or more conductive contacts corresponding to one or more conductive contacts of the aerosolizing module, wherein the elongated housing is configured to removably receive the aerosolizing module in order to establish a removable electrical connection between the housing and the corresponding conductive contacts of the aerosolizing module, thereby electrically connecting the elongated housing to a vibrable transducer. Example 21: The aerosol generating system or apparatus according to Example 20 or Example 20a, wherein the system or apparatus further comprises a power supply and a controller connectable to a vibrable transducer, the controller configured to generate a drive signal to the vibrable transducer. Example 22: The aerosol generating system or apparatus according to Example 21, wherein an elongated housing encloses a controller, and when the aerosol generating device is in use, a drive signal generated by the controller is communicated to a vibrable transducer via corresponding conductive contacts of the housing and the aerosolizing module. Example 23: The aerosol generating system or apparatus according to Example 21, wherein the aerosol generating module includes a controller, and when the aerosol generating apparatus is in use, a power supply provides power to the controller via corresponding conductive contacts of the housing and the aerosolizing module. Example 24: An aerosol generating system or apparatus according to any one of Examples 20 to 23, wherein the housing has a first housing portion and a second housing portion, the first housing portion comprising a power supply, the second housing portion comprising a mouthpiece, the corresponding axial mating ends of the first housing portion and the second housing portion configured to be connected to each other, and the axial mating end of the first housing portion or the second housing portion comprising a seat for receiving an aerosolizing module. Example 25: The aerosol generating system or apparatus according to Example 24, wherein the first housing and the second housing are hinged to each other. Example 26: An aerosol generating system or apparatus according to either Example 24 or Example 25, wherein each of the first housing portion and the second housing portion is provided with a magnetic attraction member, thereby magnetically attracting the corresponding axial fitting ends of the first housing portion and the second housing portion to each other, thereby securely connecting the aerosolizing module to the housing. Example 27: An aerosol generating system or apparatus according to any one of Examples 24 to 26, wherein at least one of the one or more conductive contacts of the housing is located within a seat. Example 28: An aerosol generating system or apparatus according to any one of Examples 24 to 27, wherein the seat and the aerosolizing module are keyed together so that the aerosolizing module can be received in the seat in a predetermined orientation. Example 29: An aerosol generating system or apparatus according to any one of Examples 20 to 23, wherein the side wall of an elongated housing has an opening, the opening defining an access opening to a cavity extending into the housing, one or more conductive contacts of the housing are located in the cavity, and the corresponding conductive contacts of the housing and the aerosolizing module are configured such that insertion of the aerosolizing module into the cavity results in an electrical connection between the housing and the corresponding contacts of the aerosolizing module. Example 30: The aerosol generating system or apparatus according to Example 29, further comprising a cradle configured to receive an aerosolizing module, wherein the cradle is removablely insertable into a cavity through an access opening. Example 31: The aerosol generating system or apparatus according to Example 30, wherein the cradle and the aerosolizing module are keyed together so that the aerosolizing module can be received in the cradle in a predetermined orientation. Example 32: An aerosol generating system or apparatus according to either Example 30 or Example 31, wherein the cradle is slidably connected to an elongated housing. Example 33: An aerosol generating system or apparatus according to any one of Examples 30 to 32, wherein either or both of the cradle and / or housing are configured to prevent the cradle from being disconnected from the housing. Example 34: An aerosol generating system or apparatus according to any one of Examples 30-33, wherein the cradle is contoured to define a substantially coplanar fit with the side wall of the elongated housing after insertion of the cradle into the cavity. Example 35: An aerosol generating system or apparatus according to any one of Examples 20 to 34, further comprising a storage section for a liquid aerosol forming substrate. Example 36: The aerosol generation system or apparatus according to Example 35, wherein the storage section of the liquid aerosol-forming substrate forms part of the aerosolization module, and the storage section is in fluid communication with a vibrable transducer. Example 37: The aerosol generating system or apparatus according to Example 35, wherein the storage unit for the liquid aerosol forming substrate is provided as a separate cartridge from the aerosolizing module, the cartridge being removablely insertable into a housing, thereby the storage unit being in fluid communication with a vibrable transducer after the cartridge is inserted into the housing and the aerosolizing module is assembled with the housing. Example 38: An aerosol generating system or apparatus according to any one of Examples 20 to 37, wherein the corresponding contacts of an elongated housing and an aerosolizing module are configured to define a slidable joint between the corresponding contacts. Example 39: An aerosol generating system or apparatus according to any one of Examples 20 to 38, wherein at least one of one or more conductive contacts of one of the elongated housing or aerosolizing module forms part of an elastic connector, and the elastic connector is configured to deform elastically when it comes into contact with the other corresponding contact of the elongated housing or aerosolizing module. Example 40: A kit of components, which, when assembled, form an aerosol generator, wherein the components comprise a first aerosolizing module and a second aerosolizing module, each of which comprises an aerosolizing module as described in any one of Examples 1 to 19, and an elongated housing comprising a power supply and one or more conductive contacts corresponding to one or more conductive contacts of the aerosolizing module, wherein the elongated housing establishes a removable electrical connection between the housing and the corresponding conductive contacts of each aerosolizing module. A kit comprising a first aerosolizing module and a second aerosolizing module configured to removably receive one of them, thereby electrically connecting the elongated housing to a vibrating transducer, the first aerosolizing module and the second aerosolizing module being mutually interchangeable within the elongated housing so as to be removably received within the elongated housing, the first aerosolizing module configured to generate a first aerosol emission pattern, the second aerosolizing module configured to generate a second aerosol emission pattern, and the first aerosol emission pattern and the second aerosol emission pattern being different from each other.

[0043] Here, we will further describe the examples with reference to the following figures. [Brief explanation of the drawing]

[0044] [Figure 1] Figure 1 is a schematic diagram of the first embodiment of the aerosol generation system. [Figure 2] Figure 2 is a plan view of the membrane of the aerosolization module used in the aerosol generation system shown in Figure 1. [Figure 3a] Figure 3a is a lower perspective view of a first embodiment of an aerosolizing module suitable for use in the aerosol generation system of Figure 1. [Figure 3b] Figure 3b is a top-down perspective view of the aerosolization module shown in Figure 3a. [Figure 4] Figure 4 is an exploded view of the upper part of the aerosol generator incorporating the aerosolizing module shown in Figures 3a and 3b, where the module is positioned between the cylindrical wall of the device housing and the mouthpiece. This figure illustrates the removable electrical connection between the conductive contacts of the housing and the aerosolizing module. [Figure 5a] Figure 5a is a lower perspective view of a second embodiment of the aerosolization module suitable for use in the aerosol generation system of Figure 1. [Figure 5b] Figure 5b is a top-down perspective view of the aerosolization module shown in Figure 5a. [Figure 6] Figure 6 is a perspective view of an aerosol generator including a slidable cradle for receiving the aerosolization modules shown in Figures 5a and 5b. [Figure 7] Figure 7 is a cross-sectional view of the aerosol generator of Figure 6, illustrating the removable electrical connection between the conductive contacts of the housing and the aerosolization module of the device when the cradle is inserted into the housing of the device. [Figure 8] Figure 8 is a plan view of a third embodiment of the aerosolization module. [Figure 9] Figure 9 is a schematic diagram of a second embodiment of the aerosol generation system. [Modes for carrying out the invention]

[0045] Figure 1 is a schematic diagram of a first embodiment of the aerosol generating system 10. The aerosol generating system 10 is a smoking system for generating an inhalable aerosol 11. The system 10 comprises an elongated housing 20, a cartridge 30, and an aerosolizing module 40. In the shown and described embodiments, the elongated housing 20 is generally cylindrical and is made of a polymer material. The cartridge 30 is removablely receptacleable within the elongated housing 20, as detailed in the following paragraphs. Similarly, in the embodiment shown in Figure 1, the aerosolizing module 40 is also removablely receptacleable within the housing 20. The cartridge 30 and the aerosolizing module 40 are interchangeable components of the aerosol generating system 10. As a result, the elongated housing 20 is reusable with different aerosolizing modules 30 and cartridges 40. When the cartridge 30 and the aerosolizing module 40 are assembled within the elongated housing 20, the combination of the housing, cartridge, and aerosolizing module collectively forms the aerosol generating device.

[0046] The elongated housing 20 contains a power supply 21, a controller 22, and a liquid supply assembly 23. The elongated housing 20 has a cylindrical portion 20a and a mouthpiece portion 20b. The mouthpiece portion 20b is fitted to one end of the cylindrical portion 20a and forms the mouth end of the elongated housing 20. The power supply 21 is connected to the controller 22 and provides them with power. In the shown embodiment, the power supply 21 is a rechargeable battery that serves as the power source. In the shown and described embodiment, the controller 22 takes the form of control electronic equipment. The controller 22 also incorporates a memory module 22a containing instructions accessible by the controller's processor (not shown) to control the operation of the aerosolization module 40. The controller 22 is configured to generate electrically driven signals that are transmitted along wiring or similar conductive members to conductive contacts 201 in the housing 20. The conductive contacts 201 in the housing 20 are detachably bonded to the corresponding conductive contacts 401 in the aerosolization module 40. The properties of various exemplary joints between the corresponding conductive contacts 201, 401 of the housing 20 and the aerosolized module 40 are described in the following paragraphs.

[0047] The cartridge 30 contains a storage section 31 for a liquid aerosol-forming substrate. The liquid aerosol-forming substrate contains nicotine. When the cartridge 30 is housed in the elongated housing 20, the cartridge is fluidly connected to a liquid supply assembly 23. The liquid supply assembly 23 has the form of a wicking material extending between the cartridge 30 and the aerosolization module 40 to progressively supply the liquid aerosol-forming substrate from the storage section 31 to the aerosolization module. In one alternative example (not shown), the liquid supply assembly 23 is a pump powered by a power supply 21. In a further alternative example (not shown), the liquid supply assembly 23 forms part of the cartridge 30.

[0048] The aerosolization module 40 has a vibrable transducer 41 and a membrane 42. The vibrable transducer 41 has a pair of annular piezoelectric actuator assemblies 41U, 41L. The annular actuator assemblies 41U, 41L are connected to opposing surfaces of the membrane 42, fixing the annular portion of the membrane between them. Each annular actuator assembly 41U, 41L is formed by a single piezoelectric actuator in a single ring shape. In one alternative example (not shown), each annular actuator assembly 41U, 41L is instead formed by two or more piezoelectric actuators connected together and arranged circumferentially to collectively define a ring shape. In a further alternative example (not shown), the vibrable transducer 41 has a single piezoelectric actuator assembly, for example, one of assemblies 41U, 41L.

[0049] When the aerosolizing module 40 is housed in the elongated housing 20, the conductive contact 201 of the housing 20 is in contact with the conductive contact 401 of the aerosolizing module 40, thereby creating electrical communication. As schematically illustrated in Figure 1 and evident from the preceding paragraphs, the electrical contacts between the housing 20 and the corresponding contacts 201, 401 of the aerosolizing module 40 are non-permanent, and the aerosolizing module may be removed from the housing. This allows the aerosolizing module 40 to be reinserted or replaced using a replacement aerosolizing module (as indicated by the double-headed arrows in Figure 1). Although not shown in the figure, the replacement aerosolizing module may be adapted to produce a different aerosol emission pattern than that produced by the original aerosolizing module.

[0050] Figure 2 shows a plan view of the membrane 42 of the aerosolizing module 40, i.e., a plan view as seen in the direction of arrow A in Figure 1. For convenience, the pair of annular actuator assemblies 41U and 41L are excluded from Figure 2. In the shown and described embodiments, the membrane 42 is formed of a polymer material. However, as stated above, other materials may be selected for the membrane 42, the membrane material being one that has minimal or zero chemical reactivity with the composition of the liquid aerosol-forming substrate. The membrane 42 is circular in plan view to correspond to the annular nature of the actuator assemblies 41U and 41L. However, in alternative examples (not shown), the membrane 42 may be any other shape (such as a rectangle) when viewed in plan. The membrane 42 has an aerosol generation zone 43 (indicated by a dashed line in Figure 2). The aerosol generation zone 43 is provided with a plurality of nozzles 44 (indicated by a dot pattern in Figure 2). The nozzles 44 are in the form of holes extending through the thickness of the membrane 42. The annular gap 45 exists between the periphery of the membrane 42 and the periphery of the aerosol generation zone 43. The annular gap 45 provides space that allows the upper annular actuator assembly 41U and the lower annular actuator assembly 41L to press against the opposing surfaces of the membrane 42. The terms “upper” and “lower” are used only in a relative sense to describe the locations of the actuator assemblies 41U, 41L relative to each other and to the membrane 42.

[0051] Figures 3a and 3b show perspective views of a first embodiment of the aerosolizing module 40. Figure 4 illustrates how the aerosolizing module 40 in Figures 3a and 3b is positioned between the cylindrical portion 20a and the mouthpiece portion 20b of the elongated housing 20 to provide a removable electrical connection between the housing 20 and the aerosolizing module 40.

[0052] The conductive contact 401 of the aerosolization module 40 in Figures 3a and 3b is defined on the conductive plate 401p on the bottom surface of the lower actuator assembly 41L. L , 401p U , 401n L , 401nU is formed from. Plate 401p L and 401n L are connected to the electrode 46L of the lower actuator assembly 41L. Plate 401p L , 401n L , the electrode 46L functions to deliver an electric drive signal generated by the controller 22 to the lower actuator assembly 41L of the vibratable transducer 41. Plate 401p U , 401n U are each connected to the metal core 47. Each metal core 47 extends vertically along the height of the atomization module 40 from its respective plate 401p U , 401n U and connects to the electrode 46U of the upper actuator assembly 41U. Plate 401p U , 401n U , their corresponding metal cores 47 and electrodes 46U function to deliver an electric drive signal generated by the controller 22 to the upper actuator assembly 41U of the vibratable transducer 41. In the case of the embodiments of FIGS. 3a and 3b, the conductive plates 401p L , 401p U , 401n L , 401n U are all provided on a common surface of the atomization module 40, that is, on the lowermost surface of the atomization module. In the case of the illustrated embodiment, the plates 401p L , 401p U , 401n L , 401n U are formed of metal.

[0053] As shown in FIG. 4, the recessed annular seat 24 is defined at one end of the cylindrical portion 20a of the elongated housing 20. The conductive contact 201 is a conductive spring - type pin connector 201p L , 201p U , 201n L , 201n U having the form of. The pin connectors 201p L and 201n LThis is associated with the electric drive signal of the lower actuator assembly 41L. Pin connector 201p U and 201n U This is associated with the electric drive signal of the upper actuator assembly 41U. When in use, the aerosolizing module 40 will be positioned within the seat 24 such that the bottom surface of the aerosolizing module rests on the base 25 of the seat. When the aerosolizing module 40 is positioned within the seat 24, the pin connector 201p L , 201n L This is plate 401p L , 401n L It is pressed against the corresponding surface, and also against the pin connector 201p U , 201n U This is plate 401p U , 401n U It is pressed against the corresponding surface. One end of the mouthpiece portion 20b of the housing 20 is formed having an annular step 26 corresponding to an annular seat 24. The mouthpiece portion 20b is fitted with the cylindrical portion 20a such that the annular step 26 is located within the seat 24 and presses down on the uppermost surface of the aerosolizing module 40. Mechanical means (not shown) are provided to fix the cylindrical portion 20a and the mouthpiece portion 20b together. As an example (not shown), the corresponding surfaces of the cylindrical portion 20a and the mouthpiece portion 2b may be screwed together to define a threaded connection, or alternatively, they may be contoured to define a bayonet fit between the two portions 20a, 20b. In a further alternative (not shown), the corresponding surfaces of the cylindrical portion 20a and the mouthpiece portion 20b may each contain magnets of opposite polarity such that the portions 20a, 20b are magnetically attracted to each other.

[0054] When the mouthpiece portion 20b is fixed to the cylindrical portion 20a, the bottom surface of the aerosolizing module 40 is firmly pressed against the base 25 of the seat 24, and the pin connector 201p L , 201p U , 201n L , 201n UPress it into the recess (not shown) provided within the base 25. Connector 201p L , 201p U , 201n L , 201n U The spring-like properties are found in the corresponding plate 401p of the aerosolization module 40. L , 401p U , 401n L , 401n U This helps to force the connector against the surface. In one alternative example (not shown), the aerosolizing module 40 and the seat 24 are provided with an angle-setting function to provide a predetermined alignment between the aerosolizing module 40 and the seat 24. Such an angle-setting function helps to force the connector 201p L , 201p U , 201n L , 201n U to its corresponding plate 401p L , 401p U , 401n L , 401n U This can help ensure an electrical connection. An example of a proper angle-setting function is the mating of lugs and recesses on the aerosolizing module 40 and the seat 24.

[0055] During use, the controller 22 accesses the memory module 22a and, along internal wiring or similar, the conductive contacts 201 of the housing 20, i.e., the pin connector 201p. L , 201p U , 201n L , 201n U Generates an electric drive signal that is transmitted to the pin connector 201p. L , 201p U , 201n L , 201n U This is the corresponding conductive plate 401p of the aerosolization module 40. L , 401p U , 401n L , 401n UBecause it is in contact with the upper actuator assembly 41U and the lower actuator assembly 41L, the electric drive signal is transmitted to them. In this way, the elongated housing 20 is electrically connected to the aerosolizing module 40, and the electric drive signal is supplied to the upper actuator assembly 41U and the lower actuator assembly 41L, inducing their vibration. The vibration output from the upper actuator assembly 41U and the lower actuator assembly 41L induces vibration of the membrane 42. The liquid aerosol-forming substrate is drawn from the storage unit 31 to the lower surface of the membrane 42 by the liquid supply unit 23. The vibration of the membrane 42 results in the substrate being discharged through the nozzle 44 as a pattern of aerosol droplets.

[0056] Figures 5a and 5b show perspective views of a second embodiment of the aerosolizing module 40. Figure 6 illustrates the aerosolizing module 40 of Figures 5a and 5b, positioned within the cradle 50. The cradle 50 can slide in and out of the elongated housing 20 to provide a removable electrical connection between the housing 20 and the aerosolizing module 40. Figure 7 provides a cross-sectional view through cross-section BB of Figure 6 when the cradle 50 is fully inserted into the housing 20.

[0057] The conductive contact 401 of the aerosolization module 40 in Figures 5a and 5b is connected to the conductive plate 401p L , 401p U , 401n L , 401n U It is formed by [this]. However, in contrast to the aerosolizing module 40 in Figures 3a and 3b, in the case of the module in Figures 5a and 5b, the conductive plate 401p associated with the lower actuator assembly 41L L , 401n L And the conductive plate 401p associated with the upper actuator assembly 41U. U , 401n L This is formed on the opposing surfaces of the vibrable transducer 41. Conductive plate 401p L , 401n Lis disposed on the bottom surface of the lower actuator assembly 41L, and on the one hand, the conductive plates 401p U and 401n U are disposed on the top surface of the upper actuator assembly 41U. The plates 401p L and 401n L are connected to the electrodes 46L of the lower actuator assembly 41L of the transducer 41 that can be vibrated by the electric drive signal generated by the controller 22. Similarly, the plates 401p U and 401n U are connected to the electrodes 46U of the upper actuator assembly 46U. The plates 401p L and 401n L and the electrode 46L function to deliver the electric drive signal generated by the controller 22 to the lower actuator assembly 41L of the transducer 41 that can be vibrated. Similarly, the plates 401p U and 401n U [[ID=2O]]and the electrode 46U function to deliver the electric drive signal generated by the controller 22 to the upper actuator assembly 41L of the transducer 41 that can be vibrated. In the case of the illustrated embodiment, the plates 401p L and 401p U and 401n L and 401n U are formed of metal.

[0058] As shown in FIG. 6, the opening 27 is formed in the side wall of the cylindrical portion 20a of the housing 20. The opening 27 defines an access opening for the cradle 50. The atomization module 40 is positioned within the cradle 50. In an alternative embodiment (not shown), the atomization module 40 and the cradle 50 are provided with an angling function to provide a predetermined alignment between the atomization module 40 and the cradle. Examples of suitable angling functions include the mating of lugs and recesses on the atomization module 40 and the cradle 50.

[0059] The cradle 50 is slidably insertable into the housing 20 as shown in FIGS. 6 and 7. The cradle 50 is provided with a lug 51 (see FIG. 7). When the cradle 50 is slid out of the housing 20, the lug 51 reacts against the inner surface of the side wall of the housing 20, thereby preventing the disconnection of the cradle 50 from the housing 20. The conductive contacts 201 of the housing 20 are pairs of spring connectors 201p L , 201n L , and 201p u , 201n U in the form of. From the perspective of FIG. 7, only one connector of each pair is visible. The connectors 201p L , 201n L , 201p u , 201n U each have an arm 202 extending from the base and are biased towards the upper and lower surfaces of the aerosolization module 40 using a spring 203 provided at the base. The connectors 201p L , 201n L , and 201p u , 201n U each pair is connected to the controller 22 by electrical wiring or the like. The connectors 201p L , 201n L are associated with providing an electrical drive signal generated by the controller 22 to the lower actuator assembly 41L. The connectors 201p u , 201n U are associated with providing an electrical drive signal to the upper actuator assembly 41U. When the cradle 50 holding the aerosolization module 40 is slid inside the housing 20, the lower pair of connectors 201p L , 201n L is forced by the spring 203 against the conductive plates 401p L , 401n L of the lower actuator assembly 41L, and the upper pair of connectors 201p u , 201n U is against the conductive plates 401p of the upper actuator assembly 41UU , 401n U The same pressure is exerted upon them.

[0060] During use, the controller 22 accesses the memory module 22a and connects it to the conductive contacts 201 of the housing 20, i.e., the spring-loaded connector 201p, via internal wiring or similar means. L , 201n L , and 201p u , 201n U Generates an electric drive signal transmitted to the pair. Connector 201p U , 201n U The upper pair is plate 401p U , 401n U It is forced upon you. Connector 201p L , 201n L The lower pair is plate 401p L , 401n L The elongated housing 20 is electrically connected to the aerosolizing module 40, and an electric drive signal is supplied to the upper actuator assembly 41U and the lower actuator assembly 41L to induce vibration. The vibration output from the upper actuator assembly 41U and the lower actuator assembly 41L induces vibration of the membrane 42. The liquid aerosol-forming substrate is drawn from the storage unit 31 to the lower surface of the membrane 42 by the liquid supply unit 23. The vibration of the membrane 42 results in the substrate being discharged through the nozzle 44 as a pattern of aerosol droplets.

[0061] Figure 8 shows a third embodiment of the aerosolization module 40, and Figure 8 is a plan view of the membrane 42. The aerosolization module 40 in Figure 8 has a vibrable transducer 41 in the form of a single actuator assembly positioned relative to one surface of the membrane 42. The membrane 42 has a first membrane portion 42a and a second membrane portion 42b, each membrane portion being made of metal. The first membrane portion 42a and the second membrane portion 42b are electrically insulated from each other by an insulating strip 48. Region 401p of membrane portion 42a serves as an electrical contact region. Similarly, region 401n of membrane portion 42b also serves as an electrical contact region. Electrodes 46 are connected to regions 401p and 401n. When in use, conductive contacts 201 of the elongated housing 20 contact regions 401p and 401n to supply an electrically driven signal from the controller 22 to the vibrable transducer 41 of the aerosolization module 40. The insulating strip 43 prevents a short circuit between region 401p and region 401n.

[0062] Figure 9 is a schematic diagram of a second embodiment of the aerosol generation system 10. Features common to the exemplary system in Figure 1 are referred to using the same reference numerals. The aerosol generation system 10 in Figure 9 differs from the system in Figure 1 in that the controller 22 forms part of the aerosolization module 40. As can be seen in Figure 9, the controller 22 is connected to the peripheral side of the vibrable transducer 41, having conductive contacts 401 of the aerosolization module that are connected to or provided on the surface of the controller. When the aerosolization module 40 is housed in the elongated housing 20, the conductive contacts 201 of the housing 20 are in contact with and electrically connected to the conductive contacts 401.

[0063] For the purposes of this specification and the appended claims, unless otherwise indicated, all numbers representing amounts, quantities, percentages, etc., should be understood in all cases as being modified by the term “approximately.” Furthermore, all ranges include the disclosed maximum and minimum points and any intermediate ranges therewith, which may or may not be specifically listed herein. Thus, in this context, the number “A” is understood as “A” ± 10%. In this context, the number “A” may be considered to include a number that falls within the general standard error of the measurement of the characteristic that the number “A” modifies. In some cases as used in the appended claims, the number “A” may deviate by the percentages listed above, provided that the amount of deviation does not substantially affect the basic and novel characteristics(s) of the claimed invention. Furthermore, all ranges include the disclosed maximum and minimum points and any intermediate ranges therewith, which may or may not be specifically listed herein.

Claims

1. Aerosol generator, The long, slender housing, An aerosolizing module that can be removably inserted into the housing of an aerosol generator, A vibrable transducer for aerosolizing a liquid aerosol-forming substrate, The vibrable transducer comprises one or more conductive contacts that are electrically connected to the vibrable transducer, The one or more conductive contacts are configured for a removable electrical connection to the corresponding conductive contacts of the housing, The aerosolizing module further comprises a membrane, the membrane comprising an aerosol generating zone, the vibrable transducer being operably connected to the membrane to vibrate the membrane during use, the membrane being formed of a conductive material, and a portion of the membrane forming at least one of the one or more conductive contacts of the aerosolizing module, The elongated housing is configured to accommodate the power supply and to removably receive the aerosolizing module, thereby electrically connecting the elongated housing to the vibrating transducer, establishing a removable electrical connection between the corresponding conductive contacts of the housing and the aerosolizing module. The side wall of the elongated housing is provided with an opening, the opening defining an access opening to a cavity extending into the housing, one or more conductive contacts of the housing are located within the cavity, and the corresponding conductive contacts of the housing and the aerosolizing module are configured such that insertion of the aerosolizing module into the cavity brings about an electrical connection between the corresponding contacts of the housing and the aerosolizing module. An aerosol generator comprising a vibrable transducer connected to the surface of the membrane and surrounding the aerosol generation zone, wherein the annular actuator assembly comprises two or more actuators arranged circumferentially relative to each other to define the annular portion surrounding the aerosol generation zone.

2. The aerosol generating apparatus according to claim 1, wherein at least one of the one or more conductive contacts of the aerosolizing module forms part of the vibrable transducer.

3. The aerosol generating apparatus according to claim 1 or 2, wherein the aerosol generating zone is provided with a plurality of nozzles for passages of a liquid aerosol forming substrate through it.

4. The aerosol generating apparatus according to any one of claims 1 to 3, wherein one or more conductive contacts of the aerosolizing module comprises a first conductive contact and a second conductive contact, the first portion of the film forms the first conductive contact, and the second portion of the film forms the second conductive contact.

5. Aerosol generating apparatus according to any one of claims 1 to 4, wherein the vibrable transducer comprises a pair of annular actuator assemblies provided as a first annular actuator assembly and a second annular actuator assembly, each of the first annular actuator assembly and the second annular actuator assembly comprising one or more actuators, the first annular actuator assembly and the second annular actuator assembly being arranged to connect to opposing surfaces of the film, thereby constraining the annular portion of the film between the first annular actuator assembly and the second annular actuator assembly, the annular portion surrounding the aerosol generating zone, and the one or more conductive contacts of the aerosolizing module comprising one or more first conductive contacts electrically communicating with the first annular actuator assembly and one or more second conductive contacts electrically communicating with the second annular actuator assembly.

6. The aerosol generating apparatus according to claim 5, wherein either or both of the first annular actuator assembly and the second annular actuator assembly comprises a single annular actuator.

7. The aerosol generator according to any one of claims 1 to 6, further comprising a cradle configured to receive the aerosolizing module, wherein the cradle is removablely insertable into the cavity through the access opening.

8. The aerosol generator according to claim 7, wherein the cradle and the aerosolizing module are keyed together so that the aerosolizing module can be received in a predetermined orientation within the cradle.

9. The aerosol generator according to claim 7 or 8, wherein either or both of the cradle and the housing are configured to prevent the cradle from being disconnected from the housing.

10. The aerosol generator according to any one of claims 7 to 9, wherein the cradle is contoured to define a substantially coplanar fit with the side wall of the elongated housing after the cradle has been inserted into the cavity.

11. A kit of parts, wherein when the parts are assembled, they form an aerosol generator, and the parts are The long, slender housing, The first aerosolization module, The second aerosolization module, Each of the first aerosolization module and the second aerosolization module is, A vibrable transducer for aerosolizing a liquid aerosol-forming substrate, The vibrable transducer comprises one or more conductive contacts that are electrically connected to the vibrable transducer, The one or more conductive contacts are configured for a removable electrical connection to the corresponding conductive contacts of the housing, The aerosolizing module further comprises a membrane, the membrane comprising an aerosolizing zone, the vibrating transducer being operably connected to the membrane to vibrate the membrane during use, the membrane being formed of a conductive material, and a portion of the membrane forming at least one of the one or more conductive contacts of the aerosolizing module, The vibrable transducer comprises an annular actuator assembly connected to the surface of the membrane and surrounding the aerosol generation zone, and the annular actuator assembly comprises two or more actuators arranged circumferentially relative to each other to define the annular portion surrounding the aerosol generation zone. The elongated housing comprises a power supply and configured to removably receive one of the first aerosolizing module and the second aerosolizing module, thereby electrically connecting the elongated housing to the vibrating transducer, in order to establish a removable electrical connection between the housing and the corresponding conductive contacts of the respective aerosolizing modules. The side wall of the elongated housing has an opening, the opening defines an access opening to a cavity extending into the housing, one or more conductive contacts of the housing are located in the cavity, and the corresponding conductive contacts of the housing and the aerosolizing module are configured such that insertion of the aerosolizing module into the cavity results in an electrical connection between the housing and the corresponding contacts of the aerosolizing module. A kit comprising a first aerosolizing module and a second aerosolizing module that are mutually interchangeable within the elongated housing so as to be removably received within the elongated housing, wherein the first aerosolizing module is configured to generate a first aerosol release pattern, and the second aerosolizing module is configured to generate a second aerosol release pattern, and the first aerosol release pattern and the second aerosol release pattern are different from each other.

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