KR20230132492A - adjustable filter - Google Patents

Abstract

The vapor-generating article includes: a body having a first end and a second end opposite the first end, the body disposed to include a vapor-generating material; a filter having a first end disposed as a mouthpiece portion and a second end opposite the first end arranged to be attached to the first end of the body; An air inlet portion located at a second end of a filter, the air inlet portion comprising at least one opening for allowing ambient air to enter the filter, the filter comprising: and an adjuster configured to move relative to the air intake portion to adjust the cross-sectional area of the opening to alter the air flow, wherein the second end of the filter is releasably attachable to the first end of the body.

Description

adjustable filter

The present disclosure relates to aerosol-generating articles for use in aerosol-generating systems that heat an aerosol-generating substrate to form an aerosol. The present disclosure is particularly applicable to portable aerosol-generating devices that may be self-contained and low temperature. Such devices can heat tobacco or other suitable aerosol-based materials, without combustion, by conduction, convection, and/or radiation to generate an aerosol for inhalation.

Due to the use and popularity of risk reduction or risk modification devices (also known as vaporizers), assistive devices to assist habitual smokers who wish to quit smoking traditional tobacco products, such as cigarettes, cigars, cigarillos, and rolled tobacco. has grown rapidly over the past few years. A variety of devices and systems are available for heating or warming aerosolizable materials, as opposed to burning tobacco in conventional tobacco products.

Commonly available hazard reduction or hazard modification devices are heated base aerosol generating devices or non-combustible heated devices. Devices of this type generate an aerosol or vapor by heating an aerosol substrate, typically comprising wet leaf tobacco or other suitable aerosolizable material, to a temperature typically in the range of 150°C to 350°C. By heating the aerosol substrate without igniting or burning it, an aerosol containing the desired ingredients but free of ignition and combustion by-products is released.

In these devices, typically the aerosol substrate is contained within a consumable that is housed within a heating chamber and heated by a heater. Consumables contain large amounts of aerosol-generating substrates and can generate large amounts of aerosols.

However, a known problem within these devices is that the user experience does not fully mimic that of a cigarette. In particular, HNB devices are known to provide a different inhalation experience than that provided by traditional tobacco products such as cigarettes.

It is desirable to allow consumers to adjust the pressure drop and temperature of the HNB device to suit their own tastes and smoking characteristics.

According to a first aspect, a vapor-generating article is provided, the vapor-generating article comprising: a body having a first end and a second end opposite the first end, the body disposed to include a vapor-generating material; a filter having a first end disposed as a mouthpiece portion and a second end opposite the first end arranged to be attached to the first end of the body; An air intake portion located at a first end of the body, the air intake portion comprising at least one opening for allowing ambient air to enter the body, the filter comprising: and an adjuster configured to move relative to the air intake portion to adjust the cross-sectional area of the opening to alter the air flow, wherein the second end of the filter is releasably attachable to the first end of the body.

The regulator adjusts the size (e.g., by increasing or decreasing) the cross-sectional area of the air intake opening to allow more or less air to enter the filter body, thereby adjusting the size of the vapor generating article as needed. Allows pressure drop to be adjusted. Additionally, by changing the amount of air allowed to enter the filter body, the temperature of the vapor mixed with the surrounding air is adjusted before being inhaled by the user. In particular, the cross-sectional size of the opening can be adjusted over a continuous range. This avoids the disadvantages of known devices where the pressure drop is typically fixed. Accordingly, greater flexibility is provided with regard to control of the aerosol-generating properties of the article, and the pressure drop can be adjusted during an aerosol-generating session to more closely mimic the properties of traditional tobacco products, such as cigarettes.

Preferably, the regulator of the vapor-generating article allows consumers to increase the pressure drop of the vapor-generating article to suit their own tastes and smoking characteristics. Some users of steam generating articles have been known to shrink the filter sections by biting or squeezing them to increase pressure drop, while others do not find a change in pressure drop necessary.

Therefore, manufacturing a single standard configuration with a fixed pressure drop is not feasible for some consumers. However, it is not practical to manufacture a large number of different variants, each with a different pressure drop, each preferred by a small percentage of consumers. Accordingly, by providing an adjuster, a means to retract the filter to adjust the size of the airflow passageway through the filter and thus enhance the user's vaping experience, each consumer can control their own vapor generating article. Pressure drop and temperature can be varied.

The second end of the filter is releasably attachable to the body of the vapor generating article. Accordingly, the filter can be attached to the vapor generating article when the user wishes to use the article, and removed from the article when the user has consumed the substrate within the article. In this way, the filter is a reusable filter and can be used with a number of vapor generating articles.

Typically, a steam generating device includes a consumable article containing a substrate, and a filter attached to the consumable article. Once the substrate is consumed by the user, the steam generating device is discarded because the consumable article is no longer usable. Because the filter is attached to a consumable item, the filter is also discarded at the same time. As a result, filters typically involve simple technology that is not expensive to throw away.

By providing a filter that can be releasably attached to a vapor-generating article (also referred to as a consumable article), the filter can be reused with subsequent vapor-generating articles instead of being discarded each time. For example, a filter may be used 20 to 100 times, so the filter may be used with 20 to 100 different vapor generating articles before the filter must be replaced and discarded.

This has the effect that more complex and expensive technologies can be used in the filter, and in particular more efficient and effective means of adjusting pressure drop and temperature can be used in the filter. As an example, using a reusable filter that must be replaced only after every 20 to 100 vapor generating articles means that the technology within the filter can be 20 to 100 times the cost of a disposable, disposable filter. Thus, providing a reusable filter including an adjuster to allow users to efficiently and effectively adjust their vaping experience by having a filter where the second end of the filter is releasably attachable to a vapor generating article.

The regulator may be arranged to reduce the cross-sectional area of the air intake opening to increase the pressure drop of the air flow within the filter. The regulator may be arranged to increase the cross-sectional area of the air intake opening to reduce the pressure drop of the air flow within the filter. Preferably, the regulator comprises at least one opening, the movement of the regulator opening relative to the movement of the air intake portion opening adjusts the cross-sectional area of the opening.

The adjuster may be configured to adjust the cross-sectional area of the air intake partial opening to an open configuration that allows ambient air to flow into the air intake portion through the air intake partial opening. Due to this, the temperature and pressure drop of the steam are reduced.

The adjuster may be configured to adjust the cross-sectional area of the air intake opening to a closed configuration where ambient air cannot flow into the air intake portion. Because of this, the pressure drop and temperature of the steam can be kept relatively high.

In some embodiments, the air intake partial opening may be arranged to be substantially coaxially aligned with the regulator opening such that, when in an open configuration, the air intake partial opening and the regulator opening substantially overlap each other. In this way, air flow into the filter may be substantially unrestricted. Additionally, by placing the two openings so that they are substantially aligned with each other, the maximum amount of air flow can enter the filter through the air intake portion, thereby providing the maximum drop in temperature and pressure.

In a closed configuration, the air intake partial opening may be offset from the regulator opening such that the air intake partial opening and the regulator opening do not overlap each other. In this way, air can be substantially completely prevented from entering the filter through the air intake portion.

Preferably, the adjuster may be configured to adjust the cross-sectional area of the air intake opening in a partially open configuration where the air intake partial opening is arranged to partially overlap the adjuster opening. In this case, the air flow into the filter is partially restricted. By allowing the regulator to be in a partially open configuration, users can more finely adjust temperature and pressure drop, allowing them to more closely customize their vaping experience.

In some embodiments, the adjuster may include a rotatable element configured to rotate relative to the air intake portion, the rotation of the rotatable element adjusting the cross-sectional area of the opening. The rotating element provides a simple but effective mechanism for adjusting the cross-sectional area of the air intake opening. Accordingly, vapor generating articles can be manufactured from relatively simple components that can be easily operated by any user.

Preferably, the regulator may be arranged to accommodate the filter and surround the air intake portion. The regulator may have a sleeve-shaped or collar-shaped configuration. In this way, the regulator can be arranged to slip over the filter body to surround the outer surface of the filter.

Preferably the regulator can be arranged to rotate relative to the filter. Accordingly, the adjuster can cover and expose the air intake opening through rotation of the adjuster to adjust the size of the air intake opening.

In some embodiments, at least one opening of the air intake portion can have a substantially circular shape. In some embodiments, at least one opening of the regulator can have a substantially circular shape. The at least one opening of the air intake portion may have a size and/or shape that is substantially the same as the size and/or shape of the at least one opening of the regulator. This allows the two openings to be more accurately aligned with each other, for example in an open configuration.

In another embodiment, the regulator may include at least one opening having a different size and/or shape than the size and/or shape of the at least one opening of the air intake portion. Accordingly, when in the closed position, residual air flow may enter the filter, allowing the generated vapor to cool slightly before being inhaled by the user, helping to ensure that the user does not burn their mouth. .

The opening of the air intake portion may be located in the side wall of the filter. The air intake portion may include a plurality of openings spaced apart around the side wall of the filter. The air intake openings may be spaced circumferentially around the outer surface of the filter. In some embodiments, a plurality of openings may be evenly spaced around the perimeter of the filter. In other embodiments, at least some of the plurality of air intake openings may be unevenly spaced relative to each other.

The regulator may include a plurality of openings. Preferably, each air intake portion opening has a corresponding regulator opening. Accordingly, the adjuster can adjust the cross-sectional areas of all air intake openings substantially simultaneously.

The filter may be made of plastic. Since plastic is a readily available material, using plastic can help reduce manufacturing costs. Additionally, since plastic is a relatively rigid material, using a plastic filter provides a more structurally rigid filter.

In some embodiments, the filter of the vapor generating article may be completely disposable. The filter may be made of paper. The filter may form part of the body of the vapor generating article containing the consumables.

According to another aspect, a vapor generating system is provided, the vapor generating system comprising a vapor generating article, and a vapor generating device configured to receive the vapor generating article and generate vapor from the vapor generating material, the vapor generating article being described above. According to any one of the vapor generating articles.

Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings, in which:
1 shows an exemplary aerosol-generating article;
Figure 2a shows a top view of a tunable filter;
Figure 2b shows a cross-sectional side view of an aerosol-generating article;
Figure 3a shows a top view of a tunable filter; and
Figure 3B shows a cross-sectional side view of an aerosol-generating article.

1, an exemplary aerosol-generating article 1, in the form of an elongated consumable 1, is shown positioned within an aerosol-generating device 2 to generate an aerosol.

The aerosol-generating article 1 includes a rod-shaped portion 11 and a filter 14.

The rod-shaped portion 11 includes an aerosol-generating substrate 12 extending over a portion of the length of the rod-shaped portion 11 . The aerosol-generating substrate 12 is disposed at the end of the aerosol-generating article 1, within the heating chamber of the aerosol-generating device 2 and furthest from the opening of the heating chamber. The aerosol-generating substrate 12 is a material that generates an aerosol when heated. The aerosol-generating substrate 12 may include, for example, tobacco or nicotine. The aerosol is drawn out of the aerosol-generating article 1 by the air flow through the filter 14.

The aerosol generating device 2 includes a heating chamber 21 and a heater 22.

The heating chamber 21 is a tubular structure with an internal cavity in which the aerosol-generating article 1 or the rod-shaped portion 11 of the aerosol-generating article 1 can be accommodated. Specifically, the heating chamber includes a side wall extending between first end 212 and second end 213. The first end 212 is open or openable in use to allow the rod-shaped portion 11 to be inserted. The second end 213 may be open, as shown in Figure 1, to provide an air intake for air to flow through the aerosol-generating article. Alternatively, to improve the heating efficiency of the heating chamber 21, the second end 213 can be closed.

Heating chamber 21 may be made of ceramic or metal. For example, the heating chamber 21 can be formed by bending or stamping sheet metal. Heater 22 may be any heater suitable for transferring heat into the internal cavity of heating chamber 21 through its side walls. For example, the heater may be in the form of a resistive track driven by electricity. Alternatively, other types of heaters may be used, such as heaters where heat is provided by a chemical reaction, such as fuel combustion. The heating chamber may be further surrounded by insulating material, such as vacuum tubes, insulating fibers, and/or airgel.

In use, the heater 22 is arranged to heat the heating chamber 21 to a temperature sufficient to cause the aerosol-generating substrate 12 to emit an aerosol, without combusting the aerosol-generating article 1. In particular, the heater 22 is configured to heat the aerosol-generating substrate 12 to a maximum temperature of 150°C to 350°C, more preferably to a temperature of 200°C to 350°C.

Although heater 22 is shown outside of heating chamber 21 in FIG. 1 , in some embodiments, heater 22 may be disposed inside heating chamber 21 .

The aerosol-generating article (1) further comprises an aerosol cooling region (15). The aerosol cooling region 15 extends over a portion of the length of the aerosol-generating article 1 and comprises a hollow tubular portion of the aerosol-generating article 1 . This hollow tubular portion allows aerosols (generated by heating the aerosol-generating substrate 12) to pass through the aerosol-generating article 1 without leaking through the sides of the hollow tubular portion. The aerosol cooling zone 15 does not overlap with the part of the aerosol-generating article 1 that is being heated by the heater 22 (which may be referred to as the heating zone), so that the aerosol continues within the aerosol cooling zone 15. It will not heat up.

As mentioned, the aerosol substrate 15 is disposed at the end of the aerosol-generating article 1, within the heating chamber 21 and furthest from the opening 212. Filter 14 is placed at the other end closest to opening 212. The aerosol cooling region 15 extends along the length of the aerosol-generating article 1 between the aerosol-generating substrate 12 and the filter 14 . This ensures that, upon use, the generated aerosol can be cooled before inhalation by the user.

Additional details of filter 14 will now be described.

As can be seen in Figure 2b, the filter 14 has a first end 32 arranged as a mouthpiece portion, and a second end opposite the first end arranged to be attached to the rod-shaped portion 11. It has (34). As shown in Figure 3B, an air intake portion 36 is located at the second end of the filter. The air intake portion 36 allows air to flow from the external environment through the air intake portion 36 into the filter 14. Accordingly, the air intake portion 36 conveys air and vents the aerosol vapor within the filter 14 before being inhaled by the user.

Filter 14 includes a regulator 38 (i.e., an adjustable opening member) configured to control the flow of air into filter 14 through air intake portion 36. This is achieved by the regulator 38 being movable relative to the air intake portion 36 so that the regulator 38 can adjust the cross-sectional area of the opening of the air intake portion 36 to change the air flow through the opening.

For example, the size of the air intake opening can be increased from a first size to a second size to increase the flow of air into the filter 14, thereby reducing the pressure drop and reducing the temperature of the vapor. . Conversely, the size of the air intake opening may be reduced from the second size to the first size, thereby reducing the flow of air into the filter 14, thereby increasing the pressure drop and increasing the temperature of the vapor. Since the air intake opening can be controlled to vary over a continuous range of sizes, one skilled in the art will understand that pressure drop and temperature can be precisely controlled by varying the size of the air intake opening.

In the embodiment shown in FIG. 3B , the air inlet portion 36 is circular, and the cross-sectional area of the air inlet portion 36 is varied using an adjuster 38 to adjust the amount of air that can enter the air inlet portion 36. Change the amount. However, it will be appreciated that the opening 16 may be formed in alternative shapes, such as triangular, oval, or rectangular.

The first size of the air intake opening (shown in FIG. 3B) may correspond to a condition where the regulator 38 is in the open position and the air intake opening is substantially fully open. The second size of the air intake opening (shown in FIG. 2B) may correspond to a condition where the regulator 38 is in the closed position and the air intake opening is substantially completely closed. Again, those skilled in the art will understand that the first and second sizes of the air intake openings are not intended to be limiting, and that the size of the air intake openings may be configured to vary continuously between the first and second sizes. That is, the adjuster 38 is configured to adjust the size of the air intake partial opening over a continuous range (i.e., the air intake partial opening is not limited to switching between only two sizes of openings). By adjusting the size of the air intake portion, the volumetric flow rate into the filter 14 can be increased as the size of the air intake portion opening increases.

More specifically, adjuster 38 takes the form of a sleeve or elongated collar arranged to receive filter 14 such that the adjuster surrounds filter 14, as shown in FIGS. 2A and 3A. do. In particular, the regulator 28 accommodates substantially the entire length of the filter 14, such that the regulator 38 surrounds the air intake portion 36. The regulator 38 can then rotate relative to the filter 14 and the air intake portion 36 as well as relative to the rod-shaped portion 11 . In this way, the adjuster 38 can be considered to include a rotatable element configured to rotate relative to the air intake portion 36, such that rotation of the rotatable element adjusts the cross-sectional area of the air intake opening.

The regulator includes at least one opening to allow air to enter the filter 14 through the air inlet portion 36. Accordingly, movement of the adjuster 38 causes movement of the adjuster opening. In particular, movement of the regulator opening relative to the air intake partial opening adjusts the cross-sectional area of the opening.

As described above, the regulator 38 has an open position (as shown in Figure 3B) that allows ambient air to flow through the air inlet portion opening and into the air inlet portion 36, and a It can be moved between closed positions (as shown in Figure 2B) where no air can flow. In the open position, the regulator opening is aligned substantially coaxially with the air intake portion opening. In this case, the air intake partial opening and the regulator opening can be considered to substantially overlap each other. In the closed position, the regulator opening is offset from the air intake portion opening. In this case, the air intake partial opening and the regulator opening do not overlap each other.

If the adjuster is in an intermediate position between the open and closed positions, the adjuster may be described as being in a partially open configuration. Here, the air intake partial opening is arranged to partially overlap the regulator opening.

In the embodiment shown in Figure 3b, the regulator opening as well as the air intake portion opening are substantially circular. Additionally, as shown in the embodiment of FIG. 3B, the sizes of the regulator opening and the air intake portion opening are substantially the same. However, in other embodiments not shown, the regulator may include at least one opening having a different size and/or shape than the size and/or shape of the at least one opening in the air intake portion.

For each air intake portion opening located in the side wall of the second end of the filter 14, there is a corresponding regulator opening located in the side wall of the regulator 38. Accordingly, when the adjuster 38 is rotated relative to the filter, the cross-sectional areas of all air intake portion openings are adjusted substantially simultaneously.

In summary, by using a filter with an air inlet regulator that can be adjusted by the user, it is possible to change the air to mix with the generated vapor before it reaches the user's mouth. By opening the regulator 38 more widely, more outside air is mixed with that of the steam, which has the effect of reducing the bulk temperature of the steam and reducing the pressure drop when the regulator 38 is closed. , and vice versa. Regulator 38 functions in a similar manner to that of a valve. The regulator 38 is opened and closed by turning a rotatable element in the central portion of the filter, thereby covering or exposing the opening in the outer portion of the filter.

The filter 14 is separated, at a second end 104, from one rod-shaped portion 11 of the first aerosol-generating article 1 and then passes through the second end 104 to the second aerosol-generating article ( It is a reusable filter (14), since it can be reattached to another rod-shaped part (11) of 1). In particular, the filter 14 may be slotted into or on the rod-shaped portion 11 using any suitable temporary attachment mechanism. Accordingly, filter 14 may be considered releasably attachable and capable of being used with a number of aerosol-generating articles. In other words, the filter 14 can be described as being semi-disposable.

The filter is made of plastic, which may be the same type of plastic as the rod-shaped part 11. The advantage of using plastic filters is that they enable a rigid structure that can be turned by the user and reused in multiple aerosol-generating articles (1). Because filter 14 is reusable, using a plastic body for the filter is cost effective.

When the filter 14 is attached to the rod-shaped portion 11, a vapor generating article 1 is formed. In particular, the vapor-generating article 1 includes a first end and a second end, and the filter 14 is attached to the second end of the vapor-generating article 1. The first end of the steam-generating article (1) can be used to connect with the steam-generating device (2). In this case, a steam generating system is formed comprising a steam generating article (1) and a steam generating device (2) accommodating the steam generating article (1).

An aerosol-generating device is an electronic cigarette, which may be equally referred to as a “heated tobacco device”, a “non-combustible heated tobacco device”, a “device for vaporizing tobacco products”, etc., which is a device suitable for achieving this effect. You must understand how it is interpreted. The features disclosed herein are equally applicable to devices designed to vaporize any aerosol-generating medium.

The aerosol-generating substrate 12 may, as the case may be, comprise tobacco, for example in dried or cured form, with additional ingredients to add flavor or create a smoother or otherwise more satisfying experience. In some embodiments, aerosol-generating substrate 12, such as cigarettes, may be treated with a vaporizing agent. Vaporizing agents can improve the generation of vapor from the aerosol-generating substrate 12. Vaporizing agents may include, for example, polyols such as glycerol, or glycols such as propylene glycol. In some cases, the aerosol-generating substrate 12 may not contain tobacco or even nicotine, but instead contains naturally or artificially derived ingredients to provide flavor, vaporization, improved smoothness, and/or other pleasurable effects. It may contain.

The aerosol-generating substrate 12 may be provided as a solid or paste-like material in chopped, pelleted, powdered, granulated, strip or sheeted form, optionally in combinations thereof. Equally, the aerosol-generating substrate 12 may be a liquid or a gel. In fact, some embodiments may include both solid and liquid/gel components. In fact, some embodiments may include both solid and liquid/gel components. In some embodiments, substrate 12 may be a solid block, or may be a loose material wrapped in wrapper 13. Preferably, the substrate comprises randomly oriented tobacco strands comprising tobacco powder and an aerosol former. Suitable aerosol formers include polyols such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol; Non-polyols, such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, and esters such as triacetin, triethylene glycol diacetate, triethyl citrate, glycerin or vegetable glycerin. In some embodiments, the aerosol-generating agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol.

The aerosol-generating substrate 12, when heated, typically produces a gas or a suspension of solids and/or liquids in the gas; however, the terms "vapor" and "aerosol" are used interchangeably herein, and generally, any It will be understood that this refers to a substance that is produced when the aerosol-generating substrate 12 is heated to produce a suspension of droplets or particles of size .

As used herein, the term “fluid” should be interpreted as a generic expression for tangible non-solid materials that can flow, including but not limited to liquids, pastes, gels, powders, etc. Accordingly, “fluid material” should be interpreted as material that is either intrinsic or modified to act as a fluid. Fluidization may include, but is not limited to, powdering, dissolution in a solvent, gelling, thickening, thinning, etc.

Claims (15)

As a vapor-generating article,
a body having a first end and a second end opposite the first end, the body being arranged to include a vapor generating material;
a filter having a first end disposed as a mouthpiece portion and a second end opposite the first end arranged to be attached to the first end of the body;
an air inlet portion located at the second end of the filter, the air inlet portion comprising at least one opening for allowing ambient air to enter the filter;
the filter comprising an adjuster configured to move relative to the air intake portion to adjust a cross-sectional area of the opening to alter the air flow through the opening;
wherein the second end of the filter is releasably attachable to the first end of the body,
Steam-generating articles. According to paragraph 1,
The regulator includes at least one opening,
and wherein movement of the regulator opening relative to the air intake portion opening adjusts a cross-sectional area of the opening. According to claim 1 or 2,
wherein the adjuster is configured to adjust a cross-sectional area of the air intake partial opening to an open configuration that allows ambient air to flow through and into the air intake partial opening. According to any one of claims 1 to 3,
wherein the adjuster is configured to adjust the cross-sectional area of the air intake opening to a closed configuration where ambient air cannot flow into the air intake portion. According to paragraph 3,
and wherein in the open configuration, the air inlet partial opening and the regulator opening are arranged substantially coaxially aligned with the regulator opening, such that the air inlet partial opening and the regulator opening substantially overlap each other. According to clause 4 or 5,
In the closed configuration, the air inlet partial opening is offset from the regulator opening such that the air inlet partial opening and the regulator opening do not overlap each other. According to any one of claims 1 to 6,
wherein the regulator is configured to adjust a cross-sectional area of the air intake opening in a partially open configuration, wherein the air intake partial opening is disposed such that the air intake partial opening partially overlaps the regulator opening. According to any one of claims 1 to 7,
The regulator includes a rotatable element configured to rotate relative to the air intake portion,
Rotation of the rotatable element adjusts the cross-sectional area of the opening. According to any one of claims 1 to 8,
wherein the regulator is arranged to receive the filter and surround the air intake portion, and is further arranged to rotate relative to the filter. According to any one of claims 1 to 9,
wherein the at least one opening of the air intake portion has a substantially circular shape and is substantially the same size and/or shape as the size and/or shape of the at least one opening of the regulator. According to any one of claims 2 to 9,
wherein the regulator includes at least one opening having a size and/or shape that is different from the size and/or shape of the at least one opening in the air intake portion. According to any one of claims 1 to 11,
and the opening of the air intake portion is located in a side wall of the filter. According to any one of claims 2 to 12,
The air intake portion includes a plurality of openings spaced apart around a side wall of the filter,
Wherein the regulator includes a plurality of openings. According to clause 13,
A steam-generating article, wherein each air intake portion opening has a corresponding regulator opening. A steam generation system comprising:
A steam-generating article according to any one of claims 1 to 14; and
a vapor generating device configured to receive the vapor generating article and generate vapor from the vapor generating material,
Steam generation system.