Patent Application
20200114095
The present invention relates to a consumable cartridge for an inhaler device, such as a personal vaporizer device or an electronic cigarette. The present invention also relates to an inhaler device, configured to receive such a consumable cartridge.
Personal inhaler devices, such as electronic cigarettes or “e-cigarettes” as they are also known, have gained in popularity over the past ten years as an alternative to traditional smoking articles, like cigarettes, cigars, and cigarillos. E-cigarettes typically use a vaporizer to vaporize a vaporizing liquid such as a nicotine liquid from an internal reservoir. Many e-cigarette are so called “open tank systems”, where the user refills an internal reservoir with a refill bottle. Because the technology employed in personal vaporizer devices is still quite young, developments in the design and configuration of such devices are on-going to improve their performance and their reliability, as well as their ease of production and their production costs.
Some inhaler devices are configured to be recharged with vaporizing liquid in the form of consumable cartridges or so-called “cartomizers” which are consumable items including a reservoir of e-liquid together with a vaporizing unit comprising a wick and a heating element. These consumable cartridges or cartomizers eliminate the need of manual refilling of a reservoir of the e-cigarette and are easy to use by a consumer. However, they are typically not hermetically sealed and so the e-liquid may deteriorate over time if stored for any length of time before being used. Also, cartomizers have the disadvantage that the vaporizing unit (i.e. the heater and the wick) needs to be replaced together with the e-liquid reservoir.
In view of the above, an object of the present invention is to provide a new and improved consumable cartridge for an inhaler device, such as a personal vaporizer device or an electronic cigarette. In particular, it would be desirable to provide such a new and improved consumable cartridge, which ensures a satisfying and reproducible vaping experience.
It would be desirable to provide a consumable cartridge, which reduces the exposure to the e-liquid for the user.
It would also be desirable to provide a consumable cartridge that cannot be refilled.
According to a first aspect, the present invention relates to a consumable cartridge for an inhaler device, the consumable cartridge comprising:
Significantly larger means that liquid is able to flow through in-between the piercing member and the bladder to fill up the outer casing. Preferably, the opening in the bladder provides a distance to piercing member which is larger than 1 mm.
The present invention is based on a realization that an inner bladder can be ruptured with a significant deformation so that it cannot be refilled. Furthermore, the casing protects the elastic bladder from rupturing by accident and thus helps preventing access to the elastic membrane. As the casing after use is provided with openings in both the first region and the second region thereof, refilling of the cavity of the casing will also be difficult.
The perforated region is provided with apertures, i.e. “pre-perforated” before the consumable cartridge is introduced inside the inhaler device. Conversely, the piercing step of the consumable cartridge is effectuated as the consumable cartridge is introduced into the cartridge chamber of the inhaler device.
Preferably, in use, the bladder does not seal around the piercing member once it has been cut or ruptured. Instead there is a space between the bladder and the piercing member so that the vaporizing liquid contained by the bladder readily flows out of the elastic bladder into the cavity of the casing.
According to an exemplary embodiment, the casing extends axially between the first region which is located at one axial end of the casing and the second region which is located at the axially opposite end of the casing, and wherein the casing comprises a main part which includes the first region and a cover which is attached to the main part.
Preferably, the cover is perforated and located at the second region so as to form the pre-perforated portion.
According to an exemplary embodiment, the bladder is fixedly connected to the casing at a connection point, which is distal from the pierceable region.
The connection point may be located on the main part of the casing adjacent to the cover or is located on the cover. Alternatively, the bladder is attached to the casing between the main part and the cover.
According to an exemplary embodiment, the elasticity of the bladder and the location of the connection point enables the bladder to disconnect from the pierceable member after the bladder has been ruptured or cut.
According to an exemplary embodiment, the pierceable region of the cartridge is a weakening of the casing. Alternatively, the pierceable region of the cartridge is an aperture covered by a sealing membrane or film. Alternatively, the pierceable region has on opening on the outer casing, which provides a direct access for the piercing member to the bladder.
According to an exemplary embodiment, the cover comprises a porous material. A porous material enables the casing to provide small apertures that would let liquid from the cavity pass through, but inhibits dirt from entering into the cavity of the casing.
The cover may be formed from a separate part and sealed to the main part of the casing by heat treatment or adhesive.
According to an exemplary embodiment, the axial cross section of the casing is substantially circular.
According to another exemplary embodiment, the axial cross section of the casing is non-circular. The non-circular shape of the casing creates channels (which may carry vapour) between the cartridge chamber and the consumable cartridge. The non-circular cross-section of the casing may be a regular convex polygon, lobe-shaped, an oval shape or a combination of shapes. The formation of (air) channels between the wall of the casing and the cartridge chamber is particularly advantageous in the embodiment where the inhaler device has the vaporizing chamber located in the power supply unit and thus away from the mouthpiece. The air from the vaporizing chamber thus flows across the capsule in-between the cartridge wall and the consumable cartridge when in use.
Preferably, the volume of the bladder (when full of e-liquid) is smaller than the volume of the casing cavity, such that an air pocket is created inside the consumable cartridge prior to use of the cartridge.
According to a second aspect, the present invention relates to an inhaler device configured to receive a consumable cartridge, the inhaler device comprising a mouthpiece section and a power supply unit, wherein the inhaler device comprises:
Preferably, the piercing member is substantially tubular and is open at both ends, the tip portion end being located in the cartridge chamber and the other end opening into the vaporising chamber through a plate or separation wall which separates the cartridge chamber from the vaporizing chamber and on which the piercing member is mounted.
The heater and the exposed liquid conveying portion of the wick within the vaporization chamber together form a vaporization unit. The vaporization unit together with the piercing member and connected structures (e.g. the separation plate or wall and associated outer structures of the device) may form a disposable vaporization assembly which can be disposed of and replaced from time to time when the vaporization unit has reached the end of its useful life. In some embodiments, the vaporization unit may be formed as a disposable mouthpiece section. In other embodiments, the vaporization assembly may be formed as a separate assembly which is operable to be interconnected between a mouthpiece section and a power supply unit.
In some preferred embodiments, the cartridge chamber is located between a vapour outlet in the mouthpiece (through which a user draws vapour when in use) and the vaporizing unit. In such an embodiment, the device preferably includes one or more channels through the separation wall or plate and between the cartridge and the inner wall of the cartridge chamber and through the mouthpiece to the vapour outlet.
According to an exemplary embodiment, the cartridge chamber further comprises a resilient member configured to exert an expelling force on the consumable cartridge from the cartridge such that it is separated from the cartridge chamber when the mouthpiece section and the power supply unit are separated from each other.
For a more complete understanding of the invention and the advantages thereof, exemplary embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawing figures, in which like reference characters designate like parts and in which:
The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention by way of example and together with the description serve to explain the principles of the invention. Other embodiments of the invention and many of the attendant advantages of the invention will be readily appreciated as they become better understood with reference to the following detailed description.
It will be appreciated that common and/or well-understood elements that may be useful or necessary in a commercially feasible embodiment are not necessarily depicted in order to facilitate a more abstracted view of the embodiments. The elements of the drawings are not necessarily illustrated to scale relative to each other. It will further be appreciated that certain actions and/or steps in an embodiment of a method may be described or depicted in a particular order of occurrences while those skilled in the art will understand that such specificity with respect to sequence is not actually required. It will also be understood that the terms and expressions used in the present specification have the ordinary meaning as is accorded to such terms and expressions with respect to their corresponding respective areas of inquiry and study, except where specific meanings have otherwise been set forth herein.
As best seen in
In the embodiment illustrated in
The cartridge chamber 13 comprises a piercing member 15 with an axial extension (aligned with the axial extension of the inhaler device) extending from the cartridge chamber 13 and into the vaporizer chamber 21. The piercing member 15 is a tubular element, which comprises a tip portion 16, configured to pierce or cut the consumable cartridge 1 open. The wick 18″ is located inside the piercing member 15 and has an exposed liquid conveying portion 17, which extends outside the tubular piercing member 15 inside the vaporizing chamber 21. The piercing member 15 is preferably provided with lateral holes 23, which communicate with a central channel of the piercing member 15 such that the vaporizing liquid can be absorbed in the wick 18″ through capillary action.
The lateral holes 23 provide a mechanism for liquid to soak into the wick along the entire length of the piecing member. The piercing member 15 can be provided with a length that extends along the entire axial inner length of the consumable cartridge 1. The lateral holes 23 can be provided along the entire length of the piercing member 15, whereby a reliable absorption of liquid L from the cartridge 1 to the wick can be assured.
The wick 18″ comprises fibrous or porous wicking material configured to absorb and diffuse liquid. The wick 18′ may for instance comprise natural fibers such as cotton, twined glass or mineral fibers or a porous ceramic material. The piercing member 15 is thus configured to establish a fluid connection between the consumable cartridge 1 and the heater 18′ via the wick 18″. The liquid L flows due to capillary action from the cartridge chamber 13 to the wick 18″.
The heater 18 may comprise an electrical resistance heating wire or filament, which is wound around the wick 18″. The vaporizer unit 18 and piercing member 15 may be housed in the front tip of the mouthpiece section 14 as illustrated in the embodiment of
In the use of the inhaler device 10, access to the cartridge chamber 13 may be achieved by separating the mouthpiece section 14 from the power supply unit 19, whereby a used consumable cartridge 1 can be discharged from the cartridge chamber 13 and replaced with a new one. The mouthpiece section 14 and the power supply unit 19 can engage with each other by e.g. a threaded connection, a bayonetted coupling, a hinged or a snap-lock connection. The mouthpiece section 14 and the power supply unit 19 may also engage with each other by other types locking mechanism, such as a mechanical arrangement with a lever configured to both lock and release the mouthpiece section 14 and the power supply unit 19 in relation to each other.
Alternatively, as illustrated in
In a similar embodiment illustrated in
With reference to
The consumable cartridge 1 has a first region 4 and a second region 6. A pierceable region 5 and a perforated region 7 are located at the first region 4 and the second end region 6, respectively.
Preferably, the first region 4 and the second region 6 are arranged at opposite distal ends in the axial direction of the consumable cartridge 1. The consumable cartridge includes, at the second end region 6, a perforated cover 6a which is provided, in the present embodiment, with a plurality of apertures 7′. The perforated cover 6a is attached to a main part 2a of the casing 2, and together (i.e. the main part 2a of the casing 2 and the cover 6) form the outer casing 2. The pre-perforated cover 6a may, for instance, be attached to the outer casing 2 by heat treatment or an adhesive. Alternatively, the pre-perforated cover 6a may consist of a porous and permeable cover. A porous cover lets the liquid L pass through the cover whilst minimising the possibility of dirt entering into the cavity C of the outer casing 2 prior to it's insertion into the inhaler device 10. The porous cover 6a in the present embodiment is formed from a hydrophobic material, such that its surface remains dry.
The pierceable region 5 may be provided with a pierceable membrane 5b, which in its unpierced state seals the outer casing 2. Optionally, an open seal in the shape of e.g. an O-ring can be arranged at the pierceable opening 5 to provide a snug fit around the piercing member 15. The pierceable membrane 5b inhibits dirt from entering into the cavity C of the outer casing 2. Optionally, the casing 2 can have an opening/aperture allowing direct access for the piercing member 15 to the bladder 3.
An inner elastic bladder 3 is located inside the outer casing 2. The elastic bladder is configured to hermetically enclose and store a vaporizing liquid L. The elastic bladder 3 is disconnected from the inner wall of the outer casing 2. Preferably, the elastic bladder 3 is fixedly attached to the main part 2a outer casing 2 at a point P adjacent to the pre-perforated cover. The point P is preferably located on the pre-perforated cover 6a. Alternatively, the point P may be located on the outer casing 2. In the present embodiment, the inner elastic bladder 3 is expanded to more than twice its capacity by the insertion of e-liquid at the time of the manufacture of the consumable cartridge consumable cartridge 2 and then is sealed to reduce the rate of degredation of the e-liquid contained within the consumable cartridge prior to use of the consumable cartridge within the inhaler device 10. This is safely achievable using a bladder made of sufficiently elastic material and greatly assists in the rupturing of, and outflow of e-liquid from, the elastic bladder 3.
When the inhaler device 10 is prepared to be used, the mouthpiece section 14 is separated from the power supply unit 19 and a consumable cartridge 1 is inserted into the cartridge chamber 13. As is illustrated in
When the power supply unit 19 is brought into engagement with the mouthpiece section 14, the tip portion 16 of the piercing member 15 is urged against the first pierceable region 5, such that the outer casing 2 is penetrated. The tip portion 16 of the piercing member 15 is then further introduced inside the outer casing 2 and ruptures the elastic bladder 3. As the elastic bladder 3 is ruptured, the vaporizing liquid L flows out of elastic bladder and fills up the internal cavity C of the outer casing 2. As shown in
Once the consumable cartridge is ruptured, it will no longer hold fluid. At this point the responsibility of containing the fluid falls upon the device in combination with the outer casing 2 of the consumable cartridge 1. This can be alleviated by designing the engagement portion 40 such that it in its initial engagement state doesn't rupture the consumable cartridge. The rupturing step is thus performed once a first connection portion 40a and a second connection 40b portion of the engagement portion 40 are further moved against each other.
The flexible and resilient material enables the elastic bladder 3 to rupture in such a way that the rupture creates an opening in the flexible membrane 3 that is significantly larger than the corresponding cross-sectional area of the tip portion 16 of the piercing member 15. The volume of the internal cavity C of the outer casing 2 is larger than the volume of the elastic membrane 3 (in its filled state when it's housing the vaporizing liquid L). The volume difference between the internal cavity C and the volume taken up by the elastic bladder 3 in its filled state consists of an air volume. This air volume creates an air pocket inside the cartridge chamber 13 when the flexible membrane 3 is ruptured. The air pocket regulates the pressure inside the cartridge chamber 13 and prevents the vaporizing liquid L from leaking into the cartridge chamber 13.
When the user wants to start the device, the power supply unit 19 is activated by the user by pressing an activating button (not shown). The electricity from power supply unit 19 activates the heater 18′. By activating the heater 18′, the liquid in the wick 18″ is heated and vaporized into vapour V inside the vaporizing chamber 21. The user can extract the vapour V from the device by inhaling in the mouthpiece. As the user inhales, new air enters into the vaporizing chamber 21 through the air inlet opening 22. The air inlet opening 22 can be a single or a plurality of openings formed in housing 12 or mouthpiece 14.
Once the consumable cartridge 1 is depleted, the inhaler device 10 may be opened and the consumable cartridge 1 can be removed. The consumable cartridge 1 maybe manually removed by pulling it out from the cartridge chamber 13. In order to facilitate the removal of the consumable cartridge, a grip, such as a protrusion or a flap can be located on the first end region 4 or the second end region 6 of the outer casing 2 of the consumable cartridge 2. The grip is located on the end region 4, 6 exposed to the user and which is disengaged from the cartridge chamber 13 when the power supply unit 19 is separated from the mouthpiece section 14. Alternatively, the inhaler device 10 may further comprise a consumable cartridge ejection mechanism. In a simple embodiment, a consumable cartridge ejection mechanism may comprise a resilient member such as a coil spring or a leaf spring. It would also be possible to provide the inhaler device 10 with a mechanical cartridge ejection mechanism, which may be activated by a lever.
The depleted consumable cartridge 1 has apertures in both the first end region 4 and the second end region 6. Specifically, one of the regions is pre-perforated and the other region is pierced during the use of the consumable cartridge 1. Hence, the consumable has apertures on opposite sides on the casing 2 when it has been used. These apertures provide a refill protection as the cartridge would leak from a second aperture if a user tries to refill the consumable cartridge in a first aperture.
The outer casing 2 and the elastic bladder 3 are manufactured in two separate steps of a manufacturing process of the consumable cartridge 1. The casing 2 is preferably manufactured by using a thermoplastic material in a molding process. The elastic bladder is preferably manufactured by:
Alternatively, the consumable cartridge can be manufactured by shaping the outer casing 2 in a suitable material, such as thermoplastics. The elastic bladder 3 can be produced in a standardized “balloon shaping process”, whereafter the elastic bladders 3 are filled with vaporizing liquid L and introduced into the casing 2. The perforated lid 6a is connected to the casing. Preferably, in the same step, a neck of the balloon extends in-between the casing 2 and the perforated cover 6a, such that when the casing 2 and the perforated cover 6a are joined together, the neck of the elastic bladder 3 is connected in a point P. Alternatively, the elastic bladder may be connected to the perforated cover 6a in the point P.
With reference to
As best seen in
As the piercing member 15 is longer than the consumable cartridge in the axial direction, the piercing member is able to pierce through the casing 2 of the consumable cartridge 1 on two distal locations in the axial direction of the consumable cartridge 1. The power supply unit 19 or the end cap may be provided with a recess with 36. The recess 36 creates a space for accommodating the piercing member 15 as it pierces through the consumable cartridge 1 on the second location on the consumable cartridge 1.
The first pierceable region 5 and the second pierceable region 7 may be formed as weakenings in the casing 2. The weakenings create a low resistance zone and facilitates the piercing of the consumable cartridge in those regions. Preferably, the first pierceable region 5 has a weakening and the second pierceable region casing 2 has a cover or a membrane. This would facilitate the filling of the consumable cartridge 1 during manufacturing.
Alternatively, both pierceable regions 5,7 can be formed as apertures in the outer casing 3 and being sealed by the means of a first pierceable membrane 3 and a second pierceable membrane 3′. Preferably, the pierceable regions 5, 7 are centered with respect to the consumable cartridge and the piercing member 15. The sealing membranes 3, 3′ may comprise an elastomeric material so that the membranes 3, 3′ seal and provide a snug fit around the piercing member 15 when they are pierced through. This prevents a leakage of the liquid L through the membranes 3, 3′ and/or through the first pierceable region 5 and the second pierceable region 7.
The first pierceable region 5 and the second pierceable region 7 may be formed as a depression in the wall of the casing 2. A depression protects the weakening from being opened by accident.
In use, as the consumable cartridge 1 is inserted into the cartridge chamber 13, the tip portion 16 of the piercing member 15 is aligned with and passes through the pierceable region 5 of the casing 2, as seen in
As seen in
The consumable cartridge 1 comprises a generally cylindrical casing 2 which defines a cavity C for containing a volume of a vaporizing liquid L. The consumable cartridge 1 has a first pierceable region 5 and a second pierceable region 7 both provided with a sheet-like pierceable film or membrane. The outer casing 2 may comprise a main portion 2a and a lid portion 6. An advantage of the lid portion 6 is that it gives a larger access opening for filling the receptacle with vaporizing liquid in a manufacturing process of the consumable cartridge 1.
In use, the consumable cartridge 1 is inserted into the cartridge chamber and pierced by the piercing member 15 in the same way as the previous embodiment, whereby the first pierceable region 5 is pierced. By pressing the consumable cartridge 1 in the direction of arrows As seen in
As will be understood by persons of ordinary skill in the art, the power supply unit or battery unit 19 will typically cooperate with a controller or microcontroller module present in the inhaler device 10. These are operatively connected to the aerosol generating means 18 in order to provide electric power or current to the heating coil and to control the vaporization process. A sensor (not shown) may optionally be provided in the piercing member 15 to determine the liquid content remaining in the cartridge 1.
Although specific embodiments of the invention are illustrated and described herein, it will be appreciated by those of ordinary skill in the art that a variety of alternate and/or equivalent implementations exist. It should be appreciated that the exemplary embodiment or exemplary embodiments are examples only and are not intended to limit the scope, applicability, or configuration in any way. Rather, the foregoing summary and detailed description will provide those skilled in the art with a convenient road map for implementing at least one exemplary embodiment, it being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope as set forth in the appended claims and their legal equivalents. Generally, this application is intended to cover any adaptations or variations of the specific embodiments discussed herein.
It will also be appreciated that in this document the terms “comprise”, “comprising”, “include”, “including”, “contain”, “containing”, “have”, “having”, and any variations thereof, are intended to be understood in an inclusive (i.e. non-exclusive) sense, such that the process, method, device, apparatus or system described herein is not limited to those features or parts or elements or steps recited but may include other elements, features, parts or steps not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the terms “a” and “an” used herein are intended to be understood as meaning one or more unless explicitly stated otherwise. Moreover, the terms “first”, “second”, “third”, etc. are used merely as labels, and are not intended to impose numerical requirements on or to establish a certain ranking of importance of their objects.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2017/063739 | 6/6/2017 | WO | 00 |
