• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    "METHOD OF MANUFACTURING A CARTRIDGE SUITABLE FOR USE WITH AN AEROSOL GENERATOR SYSTEM, CARTRIDGE AND AEROSOL GENERATOR SYSTEM". The present invention relates to the method of manufacturing a cartridge (16) suitable for use with an aerosol generating system (10) comprising the steps of supplying a liquid storage portion (22), supplying an electrical resistor ( 40) with a predefined initial resistance, assembly of the electrical resistor (40) in the cartridge (16), and customization of the electrical resistance of the electrical resistor (40) by physical manipulation, so that the resulting electrical resistance value is indicative of a substrate aerosol former (24) contained in the liquid storage portion (22).
    公开号:BR112018007783B1
    申请号:R112018007783-6
    申请日:2016-10-26
    公开日:2021-02-02
    发明作者:Tony Reevell
    申请人:Philip Morris Products S.A；
    IPC主号:
    专利说明:

    [001] The present invention relates to a method of manufacturing a cartridge for use with an aerosol generating system, particularly for use with an electronic cigarette. The cartridge is provided with an electrical resistor with a customizable electrical resistance that is indicative of an aerosol-forming medium stored in the cartridge.
    [002] Frequently used electronic cigarettes have a molecular construction and normally comprise a replaceable cartridge with a storage component to maintain an aerosol-forming substrate. The aerosol-forming substrate comprised in the cartridge can vary considerably in composition, flavor, strength and other characteristics. Consumers may wish to change cartridges at will. However, the ideal vaporization conditions may depend on the composition of the aerosol-forming substrate contained in the cartridges. Thus, in order to perfectly adapt the vaporization unit to a determined or specific aerosol-forming substrate chosen by the consumer, it would be desirable to include in the automatic recognition of electronic cigarettes means that can identify the replaceable cartridge or the aerosol-forming substrate stored therein, in order to automatically change the control settings of the vaporization equipment accordingly.
    [003] EP 2 399 636 A1 is directed to an aerosol generator comprising a replaceable cartridge as described above, wherein the cartridge comprises one or more electrical components to distinguish the cartridge from other cartridges. The electrical components can be one or more electrical resistors, capacitances or inductances. The aerosol generator comprises means for determining the electrical resistance of one or more electrical components. The aerosol generator can also comprise a look-up table stored in a memory unit, in which the characteristics of the electrical components are associated with data that identify the respective cartridge. In order to allow a distinction between different cartridges, a plurality of electrical components can be used.
    [004] In the manufacturing method disclosed in EP 2 399 636 A1 and other known manufacturing methods, electrical components must be supplied to the cartridges during assembly and normally before the cartridges are filled with the aerosol-forming substrate. Thus, it is necessary to determine or preset the electrical components already during the assembly step and in any case before the respective aerosol-forming substrate is supplied to the cartridge. This mandatory sequential manufacturing method reduces the flexibility of the cartridge production process.
    [005] Another disadvantage of the conventional manufacturing technique is that a number of different electrical components, for example, a number of different resistors, are supplied in place of the assembly, in order to be able to equip the plurality of cartridges with their particular combination or specific and clear of resistors during assembly.
    [006] The present invention aims to overcome the problems mentioned above, to simplify and increase the flexibility of conventional cartridge manufacturing processes.
    [007] In accordance with a first aspect of the invention, a method of manufacturing a cartridge suitable for use with an aerosol generating system is provided. The method comprises the steps of providing a liquid storage portion, providing an electrical resistor with a predefined initial resistance and mounting the electrical resistor to the cartridge. The electrical resistance of the electrical resistor is customized by physical manipulation, so that the resulting electrical resistance value is indicative of the aerosol-forming substrate contained in the liquid storage portion.
    [008] In other words, the electrical resistance of the electrical resistor is customized by physical manipulation, so that the resulting determined or specific electrical resistance value is indicative of the aerosol-forming substrate contained in the liquid storage portion.
    [009] Throughout this document the terms resistor, resistorelectric or basic resistor can be used interchangeably. The term basic resistor is used when it is desired to emphasize that the resistor has not yet been customized.
    [0010] The present invention significantly simplifies the production and manufacture of cartridges of aerosol generating systems, as each cartridge is initially supplied with an identical customizable basic resistor with a basic initial resistance. Thus, only one type of resistor is required as a base in order to produce a plurality of cartridges, in which each type of cartridge or each type of aerosol-forming substrate comprised in the cartridge is defined by a determined or specific individual resistance value. .
    [0011] The electric resistor can be made of any suitable material. Preferred materials are those materials that can be easily modified, for example, a sheet metal material, such as sheet material made from nichrome, aluminum, copper or similar materials. The resistor can also be made of tungsten. The nichrome is useful because it can be easily manipulated, has relatively high resistivity and is resistant to oxidation even at high temperatures. If materials that have low resistivity are used, the dimensions of the resistors can still be selected to produce measurable differences in resistance when customized. The material can also be covered with a suitable covering layer to reduce exposure to air and oxidation.
    [0012] The basic resistor provided for each cartridge can also have any suitable shape. The basic resistor may initially have a predefined geometric shape, such as a rectangular, circular, semicircular shape or any suitable combination.
    [0013] The material of the basic resistor can be easily modified, for example, by physical means, such as perforation, cutting, punching, cutting, stamping or deformation. Obviously, one skilled in the art will immediately appreciate that additional methods may be appropriate to modify the basic resistor. For example, the material can be added to the basic resistor in order to customize its resistance. The material can be joined to the basic resistor by crimping, stamping or pressing. It is also possible to customize the basic resistor by printing a metal layer on it, using stamping or painting techniques. The strength can also be modified by applying a predefined amount of molten metal to its surface. Particularly melted metal materials such as a solder material can be used here.
    [0014] It is understood that one versed in the technique can also combine one or more personalization techniques in order to modify and adjust the resistance of the basic resistor.
    [0015] The electric resistor can be mounted on the cartridge in any suitable position. The electrical resistor can be mounted inside the cartridge, so that the resistor is not accessible by the consumer during normal cartridge replacement handling.
    [0016] The electrical resistor can also be mounted inside the cartridge, for example on an end face of the cartridge. By providing the electrical resistor on the outside of the cartridge, it is possible to customize the basic resistor at any time after the cartridge manufacturing process. Thus, the manufacture of the cartridge and the customization of the basic resistor can be carried out in completely different locations. More conveniently, customization can be performed at the filling location, directly before or after the cartridge is filled.
    [0017] Thus, during manufacture, each cartridge has an identical construction, regardless of the actual type of aerosol-forming substrate that must be supplied in a subsequent filling step. This advantage considerably facilitates logistics during manufacturing, as it is no longer necessary to precisely define the exact numbers of each type of individual cartridges in their manufacture. Instead, during manufacture, all cartridges are supplied equally with the same basic customizable resistor. The decision of which cartridge to supply and which resistance is postponed until a decision is made on which aerosol-forming substrate is filled in the respective cartridge. Thus, the total production mode is even more efficient, because only a single type of cartridges must be supplied to the filling location and the cartridges are then customized to be supplied with varying resistances after deciding which cartridge is filled with each forming substrate. aerosol spray be taken.
    [0018] In order to further protect the resistor from unwanted or inadvertent manipulation, the cartridge can also be supplied with a cover that is adapted to cover the electrical resistor. In this way, the electrical resistance is accessible for intentional personalization, but at the same time it is protected from manipulation, which guarantees maximum safety for consumers.
    [0019] The cartridge can also comprise a heating element, which when in use, is connected to a power source and is controlled by the electrical circuits of the aerosol generating system. The electrical contacts for contacting the electric heater and the electrical resistor to the control circuits can be supplied as point contacts, rectangular contacts, circular contacts or as concentric ring contacts. Low-contact areas allow for compact construction but may require the cartridge to return to a specific or specific orientation in order to terminate contact. In contrast to this, areas of greater contact, particularly ring contacts, do not require a specific or specific orientation of the cartridge and therefore simplifies the handling of the system for consumers.
    [0020] In a second aspect, the invention is directed to a cartridge suitable for use with an aerosol generating system, in which the cartridge comprises a liquid storage portion and an electrical resistor with a defined initial resistance, in which the electrical resistor it is customizable by physical manipulation, so that the electrical resistance value is indicative of the aerosol-forming substrate comprised in the liquid storage portion.
    [0021] As mentioned for the first aspect, in other words the electrical resistor is customizable by physical manipulation, so that the determined resistance value resulting from the electrical resistance is indicative of the aerosol-forming substrate comprised in the liquid storage portion.
    [0022] In a third aspect, the invention is directed to an aerosol generating system, particularly an electronic cigarette, comprising the cartridge mentioned above and a device portion, which includes a power source and electronic circuits. The electronic circuits are adapted to determine the electrical resistance of the customizable resistor and to associate the electrical resistance with data that identifies the cartridge.
    [0023] The cartridge can be mounted in a detachable manner with the device vapor of the aerosol generating system.
    [0024] The device portion may comprise a memory device for storing a lookup table, the lookup table including data representing the electrical resistance of the custom resistors, each electrical resistance value being associated with data identifying a cartridge.
    [0025] Preferably, the additional query table can comprise data representing one or more resistance values, each resistance value still associated with parameters representing a different energy profile to be applied to the heating element. Each resistance value is associated with a different cartridge identifier. This means that the aerosol generating system can be configured to deliver a constant amount, for example volume or mass of the aerosol to the user even when cartridges containing different aerosol forming substrates are inserted into the aerosol generating system.
    [0026] For example, a particular aerosol-forming substrate contained within a cartridge may require more energy to be vaporized than a different aerosol-forming substrate contained within another cartridge. By associating a resistance value or a specific cartridge identifier with a heating profile stored in a query table, a constant amount of aerosol can be distributed to the user, regardless of the type of aerosol-forming substrate stored in the cartridge.
    [0027] The invention will be described below, only by way of example, with reference to the attached Figures, in which:
    [0028] Figure 1 shows several possibilities for mounting a resistor to the cartridge;
    [0029] Figure 2 shows an electronic circuit diagram for the control of the heating device and for identification of the cartridge of the present invention;
    [0030] Figure 3 shows an embodiment of the invention in which the basic resistor is provided with a central slot of fixed width and varying length;
    [0031] Figure 4 shows a modality of the invention in which the basic resistor is provided with central recesses of fixed width and varying length.
    [0032] Figure 1 shows an example of an aerosol generator system 10 normally used. The aerosol generating system 10 of Figure 1 is an electrically heated aerosol generating system 10 and comprises a two-part compartment 12 with a device portion 14 and a cartridge 16. In the device portion 14, an electrical power source is provided. in the form of a battery 18 and electrical control circuits 20. The cartridge 16 comprises a liquid storage portion 22 containing an aerosol-forming substrate 24, a capillary wick 26 and a heating element in the form of a heating coil 28. In this embodiment the liquid storage portion 22 is a cylindrical structure defining a central airflow channel 30. The ends of the capillary wick 26 extend into the liquid storage portion 22. A central portion of the capillary wick 26 extends through the airflow channel 30 and is at least partially surrounded by the heating coil 28. The heating coil 28 is connected to the electrical circuits 20 by through appropriate electrical connections (not shown). The compartment 10 also includes an air inlet 32 and an air outlet 34 at the end of the nozzle.
    [0033] When in use, the operation is as follows. The liquid aerosol forming substrate 24 is transferred by capillary action from the storage portion 22 from the ends of the wick 26 extending in the liquid storage portion 22 to the central portion of the wick 26 which is surrounded by the heating coil 28. When a user brings the device to the air outlet 34, ambient air is sucked in through the air inlet 32. A blow detection system (not shown) detects a blow and activates the heating coil 28. Battery 18 supplies electricity to the heating coil 28 to heat the central portion of the wick 26 surrounded by the heating coil 28. The aerosol-forming substrate 24 in the central portion of the wick 26 is vaporized by the heating coil 28 to create supersaturated steam. Supersaturated steam is mixed with and carried by the air flow from the air inlet 32. In the air flow channel 30, the vapor condenses to form an inhalable aerosol, which is transported towards outlet 34 and into the mouth of user.
    [0034] In addition to the elements described above, a customizable resistor 40 is provided to the cartridge 16. The customizable resistor 40 is connected to the control circuits 20 and allows the control circuits 20 to identify the liquid storage portion 22 and, in particular, the type of aerosol-forming substrate 24 comprised in the liquid storage portion 22. As indicated in Figures 1b to 1d, the customizable resistor 40 can be placed in various positions of the cartridge 16. In Figure 1b, the customizable resistor 40 is placed in the liquid storage portion 22. In this mode, resistor 40 is not visible to the user q is protected from damage during normal handling of the aerosol generating system 10. However, in this mode, customization must be carried out during the assembly of the cartridge 16.
    [0035] In the modalities of Figures 1c and 1d, the customizable resistor 40 is provided on the end face of the cartridge 16 that is in use connected to the device part 14 of the aerosol generating system 10. In this modality, the resistor 40 is still accessible after the assembly of the cartridge 16. Thus, the resistor 40 can be customizable at any time and it is not necessary to customize the resistor 40 already in the assembly step. Instead, resistor 40 can be customized after cartridge 16 is filled with aerosol-forming substrate 24. During normal use, that is, when cartridge 16 is connected to device part 14, resistor 40 is not visible to the user. Thus, also in this mode and under normal handling conditions, resistor 40 is protected from accidental damage during use.
    [0036] The customizable resistor 40 can take several forms. In Figures 1b and 1C the resistor has a rectangular sheet shape. In Figure 1d, the resistor is largely circular in shape. On the right sides of Figures 1c and 1d, resistor 40 is pictured before customization (without holes 42) and after customization (with holes 42).
    [0037] The aerosol generating system 10 depicted in Figure 1 is just an example of an aerosol generating system in which the cartridge of the present invention can be used to advantage. One skilled in the art will quickly appreciate that the identification system of the present invention can also be used with other designs of aerosol generating systems 10 that use replaceable cartridges 16.
    [0038] In Figure 2 an electrical circuit diagram of a modality of the invention is depicted. In this mode, the heating device, for example, heating coil 28, is connected to the two electrical contacts T1, T2 which in turn are connected to the two contacts of the energy source (not shown) in the aerosol generating system. In addition to this, the circuit diagram in Figure 2 shows an additional electronic contact T3. The customizable resistor 40 is provided between contacts T2 and T3. The control circuits 20 of the aerosol forming system 10 are adapted to determine the value of the customizable resistor 40 as discussed below.
    [0039] As will be known to those skilled in the art, the voltage drop V across the resistor of resistor R is proportional to the product of resistor R and the current I flowing through resistor R. By measuring the magnitude or size of the electric current passing through resistor R by a determined potential difference applied across the resistor R, the control circuit is able to determine the value of resistor R using the ratio R = V / I.
    [0040] Having determined the value of the resistor R associated with the cartridge, the control circuit determines the type of cartridge of the given resistance value when searching the query table using the given resistance value.
    [0041] The look-up table can comprise one or more different resistance values, each resistance value associated with a cartridge identifier that can be used with the aerosol generating system. The identifier can be indicative of the type of liquid contained within the cartridge.
    [0042] The controller can determine the type of cartridge as the cartridge identifier stored in the lookup table, which is associated with the resistance value stored in the lookup table, which is closest to the value for the cartridge resistance value determined by controller. The look-up table can be stored in a read-only memory (ROM) built into the control circuit or it can be stored in a separate memory store.
    [0043] In Figure 3, a possible embodiment of a customizable resistor 40 is illustrated. In this modality, the basic resistor 40 is a rectangular bar made of nichrome, which is a material commonly used for resistors. The nichrome has an electrical resistivity of between 1 and 1.5 x 10-6Ohms per meter. In the following calculations, it is assumed that nichrome has an electrical resistivity of between 1 x 10-6. The nichrome bar has a quantity L of 10 mm, a thickness T of 1 mm and a width W of 3 mm. The result of thickness T and width W defines a cross-sectional area A of the bar of 3 square millimeters. The resistance of the basic bar can be determined from its geometric dimensions and electrical resistivity according to the following formula:

    [0044] Consequently, the resistance of the basic customizable resistor 40 is 3.33 Ohms. The nichrome can be easily cut and drilled. As shown in Figure 3, the total strength of the nichrome bar can therefore be changed by cutting a hole 42 in the bar. In the embodiment of Figure 3, a hole or slot 42 with a width of 1 millimeter is provided in the center of the rectangular bar. The width of this hole 42 is kept constant, while the length of hole 42 is varied. In this way, a wide range of different resistance values can be obtained. The resulting resistances can be calculated by approaching the customizable resistor 40 as being assembled from a plurality of individual resistors R1, R2 as depicted in Figure 3c, corresponding to the equivalent circuit diagram as depicted in Figure 3d. The cross-sectional area of resistors R2 is equal to 1 square millimeter.
    [0045] Using the known formulas to calculate the total resistance of resistors connected in series or in parallel, the total resistance of the customizable nichrome bar can be calculated according to the following formulas:

    [0046] The total resistance values of the customizable bar provided with a hole 42 with a constant width of 1 millimeter and a variant length of 0 to 4 millimeters are given in the table below:
    Table 1: Resistor values for slits with varying length
    [0047] It is important that the holes are reproduced exactly so that the electronic circuit is able to distinguish the resistance values in a reliable way. The precision of the method for forming the orifice in this case is preferably equal to, or better than +/- 5%.
    [0048] As the rectangular bar is made of nichrome material, the shape of the bar can be easily modified by mechanical means. In the embodiment of Figure 3, the hole can be drilled into the material by a suitable tool comprising a variety of drill bits for forming holes 42 of varying length. The customization of the single resistor bar 40 can be carried out at any time during the manufacture of the cartridge 16. Advantageously, the customization is carried out after the decision of which aerosol forming substrate 24 must be filled inside the cartridge 16 must be taken. Thus, customization is usually done after the aerosol-forming substrate is filled in the cartridge 16.
    [0049] The electronic control circuit 20 determines the resistance value in order to check the type of the cartridge 16 and thus the type of the aerosol-forming substrate 24 provided in the cartridge inserted at the moment 16. Having determined the type of aerosol-forming substrate 24 , the electronic control circuit 20 can adjust the settings for activating the heating device 28 to the specific or specific type of aerosol forming substrate 24. In this way, the ideal vaporization conditions can be guaranteed by a wide variety of aerosol forming substrates 24 usable with the aerosol generator system 10.
    [0050] In Figure 4, an additional embodiment of a customizable resistor 40 is illustrated. In this modality, the basic resistor 40 is again a rectangular bar made of nichrome, having the same basic dimensions as the nichrome bar illustrated in Figure 3. In the embodiment of Figure 4, two lateral recesses 44 are provided in the centers of the longitudinal edges of the bar rectangular. In this case, the length of the recesses 44 is 4 millimeters and is kept constant, while the depth of the recesses 44 is varied. In this way, again a wide range of different resistance values can be obtained. The resulting resistances can be calculated by approximating the customizable resistor 40 as being assembled from a plurality of three resistors connected serially R1, R2, R1, as depicted in Figure 4c, corresponding to the equivalent circuit diagram as depicted in Figure 4d.
    [0051] Using the formulas discussed above for calculating the total resistance of serially connected resistors, the total resistance values of the bar provided with recesses 44 with a constant length of 4 millimeters and a depth of 0 to 2 millimeters is given in the table below :
    Table 2: Resistor values for recesses with varying depth
    [0052] The same values are obtained if a single recess 44 double depth is provided on a longitudinal edge of the customizable resistor, as shown in Figure 4e.
    [0053] Again, the electronic control circuit 20 determines the resistance value in order to check the type of cartridge 16. Based on this, the electronic control circuit 20 can adjust the settings for activating the heating device 28 to the determined or specific type of the aerosol forming substrate 24 used with the aerosol generating system 10.
    [0054] The exemplary modalities described above exemplify, but are not limiting. Considering the examples of modalities discussed above, other modalities consistent with the exemplary modalities above will become evident to those skilled in the art. For example, in the modality depicted in Figure 3, it may also be possible to keep the orifice length constant and vary the orifice width in order to change the electrical resistance of the customizable resistor. In addition, additional holes or recesses, combinations of holes and recesses or holes and recesses with a shape other than rectangular can be used.
    权利要求:
    Claims (12)
    [0001]
    1. Method of manufacturing a cartridge (16) suitable for use with an aerosol generating system (10), comprising the steps of: supplying a liquid storage portion (22), supplying an electrical resistor (40) with a predefined initial resistance, assembly of the electrical resistor (40) in the cartridge (16), characterized by the fact that the electrical resistance of the electrical resistor (40) is personalized by physical manipulation, so that the resulting electrical resistance value is indicative of an aerosol-forming substrate (24) contained in the liquid storage portion (22).
    [0002]
    2. Method, according to claim 1, characterized by the fact that the electrical resistor (40) is a foil resistor made of any electrically conductive material and preferably made of metallic nichrome material.
    [0003]
    3. Method, according to claim 1 or 2, characterized by the fact that the electric resistor (40) initially predefined a geometric shape, such as a rectangular, circular, semicircular shape or combinations thereof.
    [0004]
    4. Method according to any one of the preceding claims, characterized by the fact that the physical manipulation of the electrical resistor (40) includes drilling, cutting, punching, cutting, stamping or deforming the initial electrical resistor (40).
    [0005]
    5. Method according to any one of the preceding claims, characterized by the fact that the electric resistor (40) is mounted inside the cartridge (16).
    [0006]
    Method according to any one of claims 1 to 4, characterized by the fact that the electric resistor (40) is mounted on the outside of the cartridge (16).
    [0007]
    7. Method according to claim 6, characterized by the fact that the cartridge (16) is also provided with a cover that is adapted to cover the electric resistor (40) when the cartridge (16) is not mounted on the generator system aerosol spray (10).
    [0008]
    8. Cartridge (16) suitable for use with an aerosol generating system (10), the cartridge (16) comprising: a liquid storage portion (22), and an electrical resistor (40) with a predefined initial resistance, characterized due to the fact that the electrical resistance of the electrical resistor (40) is customizable by physical manipulation, so that the resulting electrical resistance value is indicative of the aerosol-forming substrate (24) contained in the liquid storage portion (22).
    [0009]
    9. Aerosol generating system, comprising: a cartridge (16) according to claim 8, and a device portion (14) comprising a power source (18) and an electronic control circuit (20), characterized due to the fact that the electronic control circuit (20) is adapted to determine the electrical resistance of the customizable resistor (40) and to associate the electrical resistance with data that identifies the cartridge (16).
    [0010]
    Aerosol generating system according to claim 9, characterized in that the cartridge (16) is detachably mounted in the device portion (14) of the aerosol generating system (10).
    [0011]
    Aerosol generating system according to claim 9 or 10, characterized in that the electrical contacts can be provided on adjacent end faces of the device portion (14) and the cartridge (16) and in which these connections are supplied with contact points, rectangular contacts, circular contacts, or as concentric ring contacts.
    [0012]
    Aerosol generating system according to claim 9, 10 or 11, characterized in that the device portion (14) further comprises a memory for storing a look-up table, the look-up table comprising data representing the electrical resistance of the custom resistors (40), each electrical resistance value being associated with data that identifies a cartridge (16).
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    同族专利:
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    法律状态:
    2020-05-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-11-24| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-02| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/10/2016, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP15194895.7|2015-11-17|
    EP15194895|2015-11-17|
    PCT/EP2016/075861|WO2017084849A1|2015-11-17|2016-10-26|Cartridge for an aerosol-generating system with customizable identification resistance|
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