RU2844300C2 - Cigarette cartridge filtering unit and cigarette cartridge - Google Patents

Abstract

FIELD: smoking accessories.

SUBSTANCE: group of inventions relates to smoking articles. Cigarette cartridge filtering unit comprises filtering element, in radial direction of which there is space for storage and accommodation, functional element fixed in space for storage and accommodation. Filtration element stays in contact with functional element partial outer surface and is jointed to storage space sidewall. Filter element and functional element receive interference fit. Ratio of storage and accommodation space hole size to functional element size in axial direction of filter element is (0.9–0.95):1.

EFFECT: reliable joint between filtration element and functional element, ruled out damage of functional element.

18 cl, 18 dwg

Description

This application claims priority to patent application No. 201811032776.6, filed on January 30, 2022, entitled “Cigarette Cartridge Filter Unit,” the contents of which are incorporated herein by reference.

FIELD OF TECHNICAL INVENTION

The present invention relates to the field of cigarette cartridge technology, in particular to a filter unit of a cigarette cartridge and a cigarette cartridge.

LEVEL OF TECHNOLOGY

Nowadays, more and more users use cigarette cartridge instead of traditional cigarettes to reduce the harm caused by traditional cigarettes to the body of users. Existing cigarette cartridges usually include a filter unit, but its functions cannot meet the growing needs of users.

RU 2598141 C2 relates to a filter for a smoking article. A filter for a smoking article includes a filter material; an element containing an additive for selectively releasing the additive into the filter material; and an element for transferring the additive released from the element containing the additive to the outer surface of the filter to indicate the release of the additive, wherein the element for transferring the additive is formed from an absorbent material adapted to absorb the additive faster than the filter material, and wherein the area of the element for transferring the additive is located on the outer surface of the filter.

CN 213215316 U relates to a filter tip with adjustable flavor for electronic cigarettes and an electronic cigarette, including a filter tip made of solid cotton, the lower end of the filter tip is inserted into an air outlet of the electronic cigarette, a holding cavity is provided in the filter tip, an area of the holding cavity corresponding to the side wall of the filter tip filled into the holding cavity is provided with an opening, a blocking member closing the opening is detachably installed in the opening, the size of the opening is larger than the size of the burst bead, and the burst bead is loaded into the holding cavity in the filter tip from the opening. The utility model uses a filter tip structure with flexibly replaceable burst beads, and the user only needs to replace the burst bead to obtain different flavors while maintaining the same filter tip, which saves costs and is easy to operate. The filter tip can be used repeatedly, which also helps to improve environmental protection, and the filter tip has a filtering effect on smoke oil, and the filter tip has the effect of preventing leakage, which is safer and more hygienic.

RU 2631628 C2 relates to a filter or filter element for tobacco smoke, which includes a non-woven material. The non-woven material contains a staple fiber web and a water-soluble binder. The water-soluble binder is uniformly applied to at least one surface of the staple fiber web. The filter is characterized by excellent biodegradability.

RU 2761805 C2 relates to a filter for a smoking article or an aerosol generating article comprising first and second filter sections. The second filter section is located downstream of the first filter section. The first filter section contains a filter material and two or more capsules containing an additive. The capsules are located in the axial region near the longitudinal axis of the filter sequentially along this axis at a distance from each other. The second filter section contains at least one channel located in the axial region of the second filter section near the longitudinal axis of the filter to facilitate drawing in the aerosol through the axial region of the first filter section in which the capsules are located.

CN 110141008 A relates to a herbal cigarette cartridge for heating without combustion, comprising an air-permeable cooling metal tube, comprising a main body, wherein the main body is provided with a smoke channel in an up-down direction, the lower end of the main body is horizontally curved to expand a partition; the herbal unit is adjacent to the lower surface of the partition; a solid filter rod is adjacent to the upper end of the air-permeable cooling metal tube; an anti-leakage paper tube covering a side of the herbal unit and the air-permeable cooling metal tube; an outer paper tube covering the outer surface of the anti-leakage paper tube and a side of the solid filter rod; a sealing mesh paper covering the lower surface of the herbal unit. The herbal plant product is made from non-combustible products, which are used as low-temperature non-combustible tobacco substitutes and have a health effect, and also better solve the problems of smoking habits and the harm caused by tobacco products.

CN 110141007 A relates to a herbal cigarette cartridge for heating without combustion, comprising an air-permeable paper tube, a main body, wherein the main body is provided with a smoke channel in an up-down direction; a porous metal disk installed in a lower portion of the main body, wherein the porous metal disk comprises a disk body and a ceiling portion, and the ceiling portion is formed by bending and expanding outward from an edge of the disk body, wherein the disk body is located in the smoke channel, wherein the disk body is provided with a plurality of breathing holes along its axial direction, and the ceiling portion abuts the lower edge of the smoke channel; a herbal block is adjacent to the ceiling portion; a solid filter rod is adjacent to an upper end of the air-permeable paper tube; an anti-leakage paper tube covering a side of the herbal block and the air-permeable paper tube; an outer paper tube covering the outer surface of the paper tube against leakage and the side of the solid filter rod; and a sealing mesh paper covering the lower surface of the herbal herbal block. The herbal herbal product is made of non-combustible products, which is used as a low-temperature non-combustible tobacco substitute and has a health effect, and can better solve the problems of smoking habits and the harm caused by tobacco products.

WO 2018078169 A1 relates to a smoking article. The smoking article comprises a rod element made of smoking material, attached to a filter element by means of a rim wrap. The filter element comprises a liquid-filled guide capsule, containing a specified rupture section and designed to be destroyed in said rupture section when an external force is applied to release the liquid contained in the capsule. An indicator is provided on the rim wrap, or the indicator can be identified through the rim wrap, to encourage the consumer to apply a squeezing force in a specific place, which can improve the consumer's perception of the product.

Technical solutions

In connection with the above, in the first aspect of the present application, a filter unit of a cigarette cartridge is proposed, which includes:

a filter element in the radial direction of which a storage and placement space is installed, and

a functional element fixed in the storage and placement space, and the filter element contacts a partial outer surface of the functional element,

wherein the functional element is attached to the side wall of the storage and placement space, the filter element and the functional element are fitted with interference, and the ratio of the size of the opening of the storage and placement space to the size of the functional element in the axial direction of the filter element is (0.9-0.95):1.

In a preferred embodiment of the invention, the filter element has a first surface and a second surface located opposite each other in a radial direction, and the storage and placement space penetrates the first surface and the second surface.

In a preferred embodiment of the invention, the side wall has a groove in which a functional element is located.

In a preferred embodiment of the invention, the ratio of the size of the opening of the storage and accommodation space to the size of the filter element in the axial direction of the filter element is 1:(2.8-4).

In a preferred embodiment of the invention, the length of the filter element in the axial direction of the filter element is 8-10 mm, and in the radial direction of the filter element, the diameter of the filter element is 6.5-7 mm.

In a preferred embodiment of the invention, the functional element includes a housing and a functional part located in the housing in a liquid or gaseous state, wherein the housing is attached to the filter element; the housing is designed with the possibility of rupture when exposed to a specified external force in the radial direction of the filter element.

In a preferred embodiment of the invention, when the housing ruptures, the functional part in the liquid state can also be adsorbed to the filter element.

In a preferred embodiment of the invention, the functional element has a spherical, ellipsoidal or cylindrical shape.

In a preferred embodiment of the invention, when the functional element has a spherical shape, the diameter is 3-4 mm; when the functional element has an ellipsoidal or cylindrical shape, the outer diameter of the filter element in the radial direction is 3-4 mm, and the length of the filter element in the axial direction is 4-7 mm.

In a second aspect of the present application, there is provided a cigarette cartridge that includes:

the body of the tube where the space for accommodation is installed;

a sealing element sealed at one end of the tube body and closing the space for containment;

a tobacco smoke element located in the containing space and adjacent to the sealing element;

a cooling element located in the containing space and adjacent to the tobacco smoke element; and

a filter unit of a cigarette cartridge provided in the first aspect of the present invention, located in the accommodating space and adjacent to the cooling element.

In a preferred embodiment of the invention, the cooling element has a first passage opening passing through the first and second ends located opposite each other, the cigarette cartridge also includes a first air-permeable sealing portion and a second air-permeable sealing portion, the first air-permeable sealing portion is fixed at the first end and closes the first passage opening, and the second air-permeable sealing portion is fixed at the second end and closes the second passage opening; the first air-permeable sealing portion is located near the tobacco smoke element, and the second air-permeable sealing portion approaches the sealing element.

In a preferred embodiment of the invention, the first air-permeable sealing part is provided with at least one first opening and/or the second air-permeable sealing part is provided with at least one second opening.

In a preferred embodiment of the invention, the tube body has a zone with an avoidance sign corresponding to the storage and placement space.

In a preferred embodiment of the invention, the tube body also has two zones with a compression sign located opposite to each other, and the connection line between the centers of the two zones with a compression sign is perpendicular to the direction of expansion of the storage and placement space.

In a preferred embodiment of the invention, the length of the tube body is 42-46 mm, the outer diameter is 6.9-7.1 mm, and the inner diameter is 6.4-6.65 mm.

In a preferred embodiment of the invention, the length of the cooling element is 16-23 mm and the outer diameter is 6-6.6 mm.

In a preferred embodiment of the invention, the cigarette cartridge also includes a decoration that is connected by a bell to the tube body and the sealing element and is provided with a first end surface and a second end surface located oppositely, and in the axial direction of the tube, the first end surface is aligned with the surface of the sealing element deflected from the tube body, and the second end surface is aligned with the surface of the filter element deflected from the sealing element.

In a preferred embodiment of the invention, in the axial direction of the tube body, the length of the decoration is 42-46 mm; in the radial direction of the tube body, the outer diameter of the decoration is 7.15-7.3 mm.

Description of drawings

For the purpose of describing the technical solutions in the embodiments of the present application in more detail, the following briefly describes the accompanying drawings necessary for describing the embodiments.

Fig. 1 is a schematic diagram of a three-dimensional structure of a filter block in one embodiment of the present invention.

Fig. 2 is an exploded view of Fig. 1.

Fig. 3 is a cross-sectional view of Fig. 1 in the direction A-A.

Fig. 4 is a schematic illustration of a filter element in one embodiment of the present invention.

Fig. 5 is a schematic illustration of a functional element in one embodiment of the present invention.

Fig. 6 is a schematic diagram of a functional element in another embodiment of the present invention.

Fig. 7 is a schematic illustration of a filter unit in another embodiment of the present invention.

Fig. 8 is a schematic representation of the exploded view of Fig. 7.

Fig. 9 is a schematic illustration of a cigarette cartridge in one embodiment of the present invention.

Fig. 10 is a schematic illustration of a tube body in one embodiment of the present invention.

Fig. 11 is a schematic illustration of a cooling element in one embodiment of the present invention.

Fig. 12 is a partial schematic illustration of a cigarette cartridge in one embodiment of the present invention.

Fig. 13 is a schematic illustration of a cigarette cartridge in another embodiment of the present invention.

Fig. 14 is a partial schematic illustration of a cigarette cartridge in another embodiment of the present invention.

Fig. 15 is a schematic illustration of a cigarette cartridge in another embodiment of the present invention.

Fig. 16 is an exploded view of a cigarette cartridge in one embodiment of the present invention.

Fig. 17 is an exploded view of a cigarette cartridge in another embodiment of the present invention.

Fig. 18 is a cross-sectional view of the cigarette cartridge in the radial direction.

Description of reference symbols:

cigarette cartridge-1, filter unit-2, filter element-70, storage and accommodation space-71, first surface-72, second surface-73, groove-74, functional element-30, body-31, functional part-32, tube body-40, accommodation space-41, sealing element-50, tobacco smoke element-60, cooling element-10, first passage hole-100, first end-101, second end-102, first air-permeable sealing portion-81, second air-permeable sealing portion-82, opening-83, decoration-90, first end surface-91, second end surface-92, area with avoidance sign-93, area with compression sign-94.

Embodiments of the present invention

Preferred embodiments of the present invention will now be described, it being understood that modifications may be made without departing from the present description and are considered as possible variations included within the scope of the disclosure.

The present embodiment provides a filter unit that includes:

a filter element in the radial direction of which a storage and placement space is installed, and

a functional element fixed in the storage and placement space, and the filter element contacts a partial outer surface of the functional element.

In particular, the filter element has a first surface and a second surface located opposite each other in a radial direction, and the storage and placement space penetrates the first surface and the second surface.

In particular, the functional element is attached to the side wall of the storage and placement space.

In particular, the filter element and the functional element adopt an interference fit, and the ratio of the size of the opening of the storage and accommodation space to the size of the functional element in the axial direction of the filter element is (0.9-0.95):1.

In particular, the side wall has a groove in which a functional element is located.

In particular, the ratio of the opening size of the storage and placement space to the size of the filter element in the axial direction of the filter element is 1:(2.8-4).

In particular, the length of the filter element in the axial direction of the filter element is 8-10 mm. In the radial direction of the filter element, the diameter of the filter element is 6.5-7 mm.

In particular, the functional element includes a housing and a filtering part located in the housing in a liquid or gaseous state, the housing is attached to the filtering element; the housing can rupture when exposed to a given external force in the radial direction of the filtering element.

In particular, when the housing ruptures, the functional part of the liquid state can also be adsorbed to the filter element.

In particular, the functional element has a spherical, ellipsoidal or cylindrical shape.

In particular, when the functional element has a spherical shape, the diameter is 3-4 mm; when the functional element has an ellipsoidal or cylindrical shape, the outer diameter of the filter element in the radial direction is 3-4 mm, and the length of the filter element in the axial direction is 4-7 mm.

The present embodiment provides a cigarette cartridge that includes:

the body of the tube where the space for accommodation is installed;

a sealing element sealed at one end of the tube body and closing the space for containment;

a tobacco smoke element located in the containing space and adjacent to the sealing element;

a cooling element located in the containing space and adjacent to the tobacco smoke element; and

for example, the filter unit provided in the first aspect of the present invention, located in the accommodating space and adjacent to the cooling element.

In particular, the cooling element has a first passage opening passing through the first and second ends located opposite each other, the cigarette cartridge also includes a first air-permeable sealing portion and a second air-permeable sealing portion, the first air-permeable sealing portion is fixed at the first end and closes the first passage opening, and the second air-permeable sealing portion is fixed at the second end and closes the second passage opening; the first air-permeable sealing portion is located near the tobacco smoke element, and the second air-permeable sealing portion approaches the sealing element.

In particular, the first air-permeable sealing part is provided with at least one first opening and/or the second air-permeable sealing part is provided with at least one second opening.

In particular, the body of the tube has a zone with an avoidance sign corresponding to the storage and placement space.

In particular, the tube body also has two zones with a compression sign located opposite to each other, and the connection line between the centers of the two zones with a compression sign is perpendicular to the direction of expansion of the storage and accommodation space.

Specifically, the length of the tube body is 42-46 mm, the outer diameter is 6.9-7.1 mm, and the inner diameter is 6.4-6.65 mm.

In particular, the length of the cooling element is 16-23 mm, and the outer diameter is 6-6.6 mm.

In particular, the cigarette cartridge also includes a decoration that is connected by a bell to the tube body and the sealing element and is provided with a first end surface and a second end surface located opposite each other, the first end surface is aligned with the surface of the sealing element deflected from the tube body, and the second end surface is aligned with the surface of the filter element deflected from the sealing element.

In particular, in the axial direction of the tube body, the length of the decoration is 42-46 mm; In the radial direction of the tube body, the outer diameter of the decoration is 7.15-7.3 mm.

Before presenting the technical solutions of this application, the technical problems in the relevant technology will be described in more detail.

Traditional cigarettes contain a large amount of tar and nicotine, which seriously harms the health of users. As the health needs of users grow, a cigarette cartridge 1 is needed. The tobacco smoke element 60 in the cigarette cartridge 1 usually does not contain a tobacco component or contains only a small amount of a tobacco component. The cigarette cartridge 1 is usually a cigarette cartridge 1 characterized by heating without combustion, that is, the tobacco smoke element 60 is heated without combustion. Thus, it is possible to avoid the formation of harmful substances such as tar and nicotine, not to pollute the environment and not to affect the surrounding people, ensuring the health of smokers and the surrounding people.

Based on the above differences, more and more users use the cigarette cartridge 1 instead of traditional cigarettes in order to reduce the harm caused to the user's health by traditional cigarettes. The filter unit 2 in the cigarette cartridge 1 usually plays the role of filtering harmful substances and cooling the smoke to protect the user's mouth from the excessively high temperature of the smoke when sucking. However, the functions of the filter unit 2 at present cannot meet the growing needs of users. For example, the current taste of the cigarette cartridge 1 is usually determined by the original smell of the tobacco smoke element 60 or by adding food flavors to the tobacco smoke element 60. However, due to factors such as the mentioned capacity of the tobacco smoke element 60, there are certain limitations on its aroma, durability and taste variety.

In connection with the above, in order to solve the above problems, a filter unit 2 is proposed in the present application. With reference to Figs. 1-6, it is disclosed: Fig. 1 is a schematic illustration of a three-dimensional structure of a filter unit in one embodiment of the present invention; Fig. 2 is an exploded view of Fig. 1; Fig. 3 is a cross-sectional view of Fig. 1 in the direction A-A; Fig. 4 is a schematic illustration of a filter element in one embodiment of the present invention; Fig. 5 is a schematic illustration of a functional element in one embodiment of the present invention; Fig. 6 is a schematic illustration of a functional element in another embodiment of the present invention.

The present application proposes a filter unit 2, which includes a filter element 70, in the radial direction of which a storage and placement space 71 is installed, and a functional element 30, fixed in the storage and placement space 71, and the filter element 70 contacts a partial outer surface of the functional element 30.

The filter unit 2 mainly filters harmful substances, and can also reduce the temperature of smoke to protect the user's mouth from being burned. The filter unit 2 provided by the present embodiment generally includes a filter element 70 and a functional element 30, and each element and the interaction between them will be described in detail below.

The filter element 70 is a structure that plays an important role in the filter unit 2, and the filter element 70 may be designed to filter some harmful substances and further cool tobacco smoke. Alternatively, the material of the filter element 70 includes, among other things, polylactic acid of edible quality, cellulose acetate, etc. Further alternatively, when the material of the filter element 70 is polylactic acid, molding by extrusion can be performed. Alternatively, in the axial direction, the length L5 of the filter element 70 is 8-10 mm. In the radial direction, the diameter d5 of the filter element 70 is 6.5-7 mm.

In the radial direction of the filter element 70, a storage and accommodation space 71 can be installed, which is intended for storing and accommodating the subsequent functional element 30. The storage and accommodation space 71 can be a groove or an opening, which is not limited by the present embodiment. When the storage and accommodation space 71 is an opening, the filter element 70 has a first surface 72 and a second surface 73 located oppositely in the radial direction, and the storage and accommodation space 71 passes through the first surface 72 and the second surface 73. In this case, the difficulty of opening the storage and accommodation space 71 can be reduced. When the storage and accommodation space 71 is a groove, the storage and accommodation space 71 passes only through the first surface 72 or the second surface 73, so as to prevent the functional element 30 from falling from the other surface. However, the present embodiment does not define the shape of the storage and accommodation space 71. The present embodiment schematically illustrates only that the storage and accommodation space 71 simultaneously passes through the first surface 72 and the second surface 73.

The functional element 30 is used to realize various functions, in other words, various functions can be realized using factors such as the shape, structure, material, and the like of the functional element 30. For example, if the material of the functional element 30 is a heat-absorbing material such as metal, plastic, and the like, when tobacco smoke is transmitted to the functional element 30, the heat-absorbing material can absorb a large amount of heat, thereby further improving the cooling effect. If the functional element 30 contains various spices, the taste of the tobacco smoke can be changed by the functional element 30, thereby enhancing and improving the richness, variety, and durability of the quality and taste of the tobacco smoke. If the functional element 30 contains various prescriptions of traditional Chinese medicine or Western medicine, the functional element 30 can cause the tobacco smoke to carry various prescriptions of traditional Chinese medicine or Western medicine, and when smoking, the various prescriptions of traditional Chinese medicine or Western medicine can also be inhaled into the user's oral cavity, so that the functional element 30 performs health and treatment functions.

The present embodiment schematically illustrates only the functional element 30 as an element for increasing the aroma to change the taste of tobacco smoke. Alternatively, the functional element 30 includes a housing 31 and a functional part 32 located in the housing 31 in a liquid or gaseous state, the housing 31 is attached to the filter element 70; the housing 31 can be torn when a predetermined external force is applied in the radial direction of the filter element 70. The functional element 30 includes a housing 31 and a functional part 32 located in the shell 31 in a liquid or gaseous state. The housing 31 is attached to the filter element 70 for fixing. In this case, the body 31 can be torn when a predetermined external force is applied in the radial direction of the filter element 70. For example, when the user squeezes the filter element 70 in its radial direction, when the compression exceeds the predetermined external force, the body 31 can be scattered, torn, or a hole 83 is formed so that the inner functional part 32 is shown, at this time, when the tobacco smoke passes, the functional part 32 can be moved together, thereby the user's suction can also cause the functional part 32 to move and finally suck into the user's oral cavity. The use of the functional element 30 improves the user's taste and smell. Further, alternatively, the functional element 30 is formed in a mold by crushing, blow molding, pouring, or the like.

Alternatively, when the housing 31 is destroyed, the functional part 32 in a liquid state can be sucked onto the filter element 70, in which case, during the smoking process, the user can more easily inhale the functional part 32 into the mouth when tobacco smoke passes, the aroma can be more continuously detected from the filter cotton, which improves the user experience, and the functional part 32 in a liquid or gaseous state can also play a certain cooling effect.

Alternatively, the functional portion 32 includes food spices that include, but are not limited to, one or more spice blends in blueberry, apple, watermelon, mango, grape, and other fruit and vegetable flavors.

Alternatively, the shape of the functional element 30 may be spherical, ellipsoidal or cylindrical. As shown in Fig. 5, when the shape of the functional element 30 is spherical, the diameter d3 is 3-4 mm. As shown in Fig. 6, when the shape of the functional element 30 is ellipsoidal or cylindrical, the outer diameter d3 in the radial direction D2 of the filter element 70 is 3-4 mm, and the length L3 in the axial direction D1 of the filter element 70 is 4-7 mm. The axial direction below is expressed by D1, and the radial direction is expressed by D2. Since the filter element 70 has a thickness, after opening the storage and placement space 71 in the filter element 70, which will have an outer circumferential side wall and an inner circumferential side wall. The outer circumferential side wall has an outer surface of the filter element 70, and the inner peripheral side wall is surrounded to form a storage and accommodation space 71. Thus, the filter element 70 has two dimensions in the radial direction: one is the size of the opposite two sides of the outer circumferential side walls (i.e., the outer diameter), and the other is the size of the opposite two sides of the inner circumferential side walls (i.e., the inner diameter). In other words, the size of the opposite sides of the side wall of the inner circumference in the radial direction of the filter 70 is 3-4 mm. In addition, the length, the outer diameter, the inner diameter, the axial direction and the radial direction mentioned below in this application can be understood in the same way, and will not be repeated in this application.

In the filter unit 2 provided in the present embodiment, the cooling function can be improved primarily by adding the functional element 30, or the filter element 70 can have other functions in addition to filtration, such as enhancing aroma, health care, treatment, etc., in order to improve the functional category of the filter unit 2 and enhance the taste and suction effect of the user.

Secondly, the functional element 30 is fixed in the storage and accommodation space 71 opened by the filter element 70, and contacts with the filter element 70, so that the functional element 30 is better fixed in the filter element 70 to prevent the functional element 30 from moving inside the filter element 70. And the functional element 30 is installed in the filter element 70, and since the user directly contacts the filter element 70 during smoking, the suction force in the filter element 70 is maximized, and the ability and effect of the functional element 30 can be further improved.

In addition, when the filter element 70 is fixed in the storage and accommodation space 71 provided in the radial direction of the filter element 70, the difficulty of assembling the filter element 70 with the functional element 30 can be reduced.

Referring to Fig. 3, in the present embodiment, the functional element 30 is docked to the side wall of the storage and accommodation space 71. In the present embodiment, the functional element 30 may be docked to the side wall of the storage and accommodation space 71 so that the functional element 30 is fixed to the filter element 70. Of course, in other embodiments, the functional element 30 may be glued to the side wall of the storage and accommodation space 71.

Referring to Fig. 4-5, in the present embodiment, the filter member 70 and the functional member 30 adopt an interference fit, and the ratio of the opening size d0 of the storage and accommodation space 71 to the size of the functional member 30 in the axial direction of the filter member 70 is (0.9-0.95):1. In this way, a certain amount of interference is maintained between the filter member 70 and the functional member 30, and in the above-mentioned amount, the functional member 30 can be fixed to the filter member 70 without damaging the functional member 30. If the ratio of the opening size of the storage and accommodation space 71 to the size of the functional member 30 in the axial direction of the filter member 70 is too small, for example, less than 0.9:1, while the storage and accommodation space 71 is too small, the functional member 30 will be damaged due to the small inner diameter. If the ratio of the size of the opening of the storage and accommodation space 71 to the size of the functional element 30 in the axial direction of the filter element 70 is too large, for example, more than 0.95:1, the functional element cannot be built into the filter element 70 by interference fitting.

Referring to Fig. 7 and 8, Fig. 7 is a schematic representation of a filter unit in another embodiment of the present invention. Fig. 8 is a schematic representation of an expansion of Fig. 7. In the present embodiment, a groove 74 is provided on the side wall in which a functional element 30 is provided.

In the present embodiment, a groove 74 is installed on the side wall based on the interference fit, in which the functional element 30 is installed. The groove 74 can be used to weaken the compression force resulting from the interference fit, thereby preventing deformation due to compression during the filtration process, leading to deformation of other elements such as the tube 40, and ultimately leading to a problem of uneven shape, for example, in the axial direction, the opposite ends of the filter element 70 corresponding to the functional element protrude. In addition, the presence of the first groove 74 can further determine the position of the functional element 30 in the filter element 70 and improve the accuracy of the position of the functional element 30 in the filter element 70.

Of course, in other embodiments, the functional element 30 may be glued to the side wall of the filter element 70, for example by gluing, so that the functional element 30 may be secured to the filter element 70.

Referring to Fig. 4, in the present embodiment, the ratio of the size of the opening d0 of the storage and accommodation space 71 to the size L5 of the filter element 70 in the axial direction of the filter element 70 is 1:(2.8-4).

In the axial direction of the filter element 70, the ratio of the opening size of the storage and accommodation space 71 to the length of the filter element 70 is 1:(2.8-4), which prevents the functional element 30 from falling out of the storage and accommodation space 71. The filter element 70 is not compressed and deformed in the longitudinal direction, which results in unevenness of the two ends. If the opening size of the storage and accommodation space 71 is too large, not only the functional element 30 cannot be fixed, but also the filter element 70 is reduced, thereby reducing the function of the filter element 70 itself. In other words, the size of the filter element 70 in the longitudinal direction decreases, and the deformation ability is weakened, when the functional element 30 is pressed, the filter element 70 is pressed in the longitudinal direction, and both end surfaces of the filter element 70 may be deformed and raised outward, which affects the appearance characteristics. If the opening size of the storage and accommodation space 71 is too small, the functional member 30 may be damaged by the compression force when the functional member 30 is pressed and the rebound force.

With reference to Fig. 9-11, Fig. 9 is a schematic illustration of a cigarette cartridge in one embodiment of the present invention. Fig. 10 is a schematic illustration of a tube body in one embodiment of the present invention. Fig. 11 is a schematic illustration of a cooling element in one embodiment of the present invention. The present invention also provides a cigarette cartridge that includes a tube body 40 where a receiving space 41 is installed, a sealing element 50 sealed at one end of the tube body 40 and closing the receiving space 41, a tobacco smoke element 60 located in the receiving space 41 and adjacent to the sealing element 50, and a cooling element 10 located in the receiving space 41 and adjacent to the tobacco smoke element 60. For example, the filter unit 2 provided in the first aspect of the present invention is located in the receiving space 41 and adjacent to the cooling element 10.

In addition to the filter unit 2, the present embodiment also provides the filter unit 2 in the cigarette cartridge 1. Alternatively, the cigarette cartridge 1 in the present embodiment is usually a cigarette cartridge 1 characterized by heating without combustion. The cigarette cartridge 1 also includes a tube body 40, a sealing element 50, a tobacco smoke element 60, a cooling element 10, and in the present embodiment, each element will be described in detail sequentially.

The tube body 40 is the main part of the cigarette cartridge 1 for mounting, fastening and carrying each element. The tube body 40 has a space for accommodating 41, which can be formed by the tube body 40 penetrating through the opposite ends. Alternatively, the tube body 40 can be formed by penetrating the solid tube body 40, and thereby forming the space for accommodating 41, or the tube body 40 having the space for accommodating 41 can be formed by injection molding, or the tube body 40 having the space for accommodating 41 can be formed by winding a material with a certain thickness.

Alternatively, the material of the tube body 40 includes a food grade material. Further alternatively, the food grade material includes, among other things, one or more types of white cardboard and kraft paper. In particular, the food grade material includes, among other things, white cardboard with a density of 50-200 g/ ^m2 , kraft paper with a density of 50-200 g/ ^m2 , etc.

Alternatively, the length L4 of the tube body 40 is 42-46 mm, the outer diameter d4 is 6.9-7.1 mm, and the inner diameter d4' is 6.4-6.65 mm.

Alternatively, the sealing member 50 is a member that seals one end of the two open ends of the receiving space 41 in the tube body 40, that is, the sealing member 50 seals the end surface of the tube body 40 and closes the receiving space 41 to protect the tobacco smoke element 60 from falling out and from colliding with an external force and getting wet.

Alternatively, the material of the sealing element 50 includes a food grade material. Further alternatively, the food grade material includes, but is not limited to, one or more kinds of silk cotton paper, paper with high air permeability, and paper with fat. In particular, the food grade materials include, but are not limited to, silk cotton papers with a density of 10-50 g/ ^m2 , papers with high air permeability with a density of 10-50 g/ ^m2 , parchment paper with a density of 45-105 g/ ^m2 , etc.

Alternatively, the sealing element 50 is made round and its diameter is 6.9-7.2 mm, completely closing the space for containing 41 and sealing on the end surface of the body of the tube 40.

Alternatively, the material of the sealing element 50 may first be cut by a mold, a knife mold, or a laser to cut out the required outer shape, and then sealed in the tube body 40. Or the sealing element 50 is first sealed in the tube body 40, and then the required outer shape is cut out by a mold, a knife mold, or a laser.

The tobacco smoke element 60 is the main unit of the cigarette cartridge 1 and is mainly intended to generate tobacco smoke for inhalation by the user by heating. Alternatively, the tobacco smoke element 60 is prepared from various herbs. Alternatively, the tobacco smoke element 60 has the form of a sheet or a granule.

The tobacco smoke element 60 can be located in the containing space 41 and next to the sealing element 50, i.e., docked to the sealing element 50. Alternatively, in the axial direction of the body of the tube 40, the length of the tobacco smoke element 60 is 13-18 mm. In the radial direction, the length of the tobacco smoke element 60 is 6.4-6.6 mm.

The cooling element 10 is the main unit for cooling in the filter unit 2. The cooling element 10 has a structure having a first passage opening 100, in particular, it can penetrate through the first end surface 91 and the second end surface 92 located opposite to each other to form the first passage opening 100. Thus, the temperature of the tobacco smoke is reduced when it passes through the first passage opening 100. Alternatively, the cooling element 10 can be formed by penetrating a solid cooling element 10, and thereby forming the first passage opening 100, or the cooling element 10 having the first passage opening 100 can be formed by injection molding, or the cooling element 10 having the first passage opening 100 can be formed by winding a material with a certain thickness.

Alternatively, the material of the cooling element 10 includes silica gel, a food grade material, etc. The above-mentioned “food grade materials” refers to a toxic or hazardous substance whose impact on humans and the environment when exposed to heat will be reduced or even eliminated. Further alternatively, the food grade material includes, among other things, one or more of white cardboard, kraft paper, polylactic acid (PLA). In particular, the cooling element 10 includes, among other things, white cardboard with a density of 50-200 g/m ² , kraft paper with a density of 50-200 g/m ² , etc.

Alternatively, the length L1 of the cooling element 10 is 16-23 mm, and the outer diameter d1 is 6-6.6 mm. The design of the cooling element 10 in the above-described size range not only improves the cooling efficiency, but also ensures the concentration of tobacco smoke and the suction resistance during suction. If the outer diameter of the cooling tube is too small, it will result in too much resistance to tobacco smoke, and if the outer diameter of the cooling tube is too large, it will result in too little concentration of tobacco smoke in the cooling tube, which will affect the taste of tobacco smoke. Therefore, the outer diameter of the cooling tube is 6-6.6 mm, which can fully concentrate the tobacco smoke in the cooling element 10, while ensuring low suction resistance. It should be noted that the suction resistance refers to the resistance to suction and exhaustion. In particular, the suction resistance is the resistance that occurs when sucking tobacco smoke into the cooling tube and sucking out the tobacco smoke from the cooling element 10.

Alternatively, for the tube body 40 and the cooling member 10 formed by the winding method, flat winding or diagonal winding can be used. The tube body 40 and the cooling member 10 can be wound in the same way or differently. If the flat winding method is used, on one thickness of its range of 50-200g of food paper, 4-5 layers are stacked together, only in the last layer is the circle interface covered with a fixed layer of adhesive of a width of 1mm ~ 2mm, which can reduce the difficulty of winding. If the diagonal winding method is used, three layers of food paper can be used, and from one side to the other side of the thickness ratio is 8:10:6, up to 135 degrees ± 15 mutual overlap angle in a spiral are rolled together, and the layers are coated with adhesive, so that the three layers can be firmly bonded together, leaving the core of the roll, the diagonally wound paper tube has very good stability, strength, roundness.

The cigarette cartridge 1 in this embodiment adopts the filter unit 2 provided in the above embodiment of the present application, which can improve the cooling function of the cigarette cartridge 1, or make the cigarette cartridge 1 also have other functions, and improve the functional diversity of the cigarette cartridge 1. This also reduces the assembly complexity and improves the use of functional parts. In addition, the functional member 30 is located inside the filter member 70, which allows the functional member 30 to always be open to the smoking device when the user uses it together with the smoking device, so that the user can squeeze the functional member 30 at any time.

With reference to Fig. 12, Fig. 12 is a partial schematic illustration of a cigarette cartridge in one embodiment of the present invention. In the present embodiment of the invention, the cooling element 10 has a first passage opening 100 passing through the first 101 and second ends 102 located opposite each other, the cigarette cartridge 1 also includes a first air-permeable sealing portion 81 and a second air-permeable sealing portion 82, the first air-permeable sealing portion 81 is fixed on the first end 101 and closes the first passage opening 100, and the second air-permeable sealing portion 82 is fixed on the second end 102 and closes the second passage opening. The first air-permeable sealing portion 81 is located near the tobacco smoke element 60, and the second air-permeable sealing portion 82 approaches the sealing element 70.

The cigarette cartridge 1 may also comprise a first air-permeable sealing portion 81 fixed to the second end 102. When the first air-permeable sealing portion 81 covers the first passage opening 100, it plays a sealing role. As for the air-permeable function, the first air-permeable sealing portion 81 may have an air-permeable function due to its material, or at least one opening 83 may be opened on the first air-permeable sealing portion 81 to perform an air-permeable function, so that the tobacco smoke of the tobacco smoke element 60 can enter the cooling element 10 through the first air-permeable sealing portion 81.

Alternatively, the material of the first air-permeable sealing portion 81 includes a food grade material. Further alternatively, the food grade material includes, but is not limited to, one or more kinds of silk cotton paper, paper with high air permeability, and paper with fat. Specifically, the food grade materials include, but are not limited to, silk cotton papers with a density of 10-50 g/ ^m2 , papers with high air permeability with a density of 10-50 g/ ^m2 , parchment paper with a density of 45-105 g/ ^m2 , etc.

Alternatively, the first air-permeable sealing part 81 is made round and its diameter is 6-6.6 mm, completely closing the space for containing 41 and sealing on the end surface of the body of the tube 40.

Alternatively, the material of the first air-permeable sealing portion 81 may first be cut by a mold, a knife mold, or a laser to cut out the required outer shape, and then glued onto the cooling member 10. Or the first air-permeable sealing portion 81 is first glued onto the cooling member 10, and then the required outer shape is cut out by a mold, a knife mold, or a laser.

The cigarette cartridge 1 may also comprise a second air-permeable sealing portion 82 fixed to the first end 101. When the second air-permeable sealing portion 82 covers the first passage opening 100, it plays a sealing role. As for the air-permeable function, the second air-permeable sealing portion 82 may have an air-permeable function due to its material, or at least one opening 83 may be opened on the second air-permeable sealing portion 82 to perform an air-permeable function, so that the tobacco smoke of the tobacco smoke element 60 can enter the cooling element 10 through the second air-permeable sealing portion 82.

Alternatively, the material of the second air-permeable sealing portion 82 includes a food grade material. Further alternatively, the food grade material includes, but is not limited to, one or more kinds of silk cotton paper, paper with high air permeability, and paper with fat. Specifically, the food grade materials include, but are not limited to, silk cotton papers with a density of 10-50 g/ ^m2 , papers with high air permeability with a density of 10-50 g/ ^m2 , parchment paper with a density of 45-105 g/ ^m2 , etc.

Alternatively, the second air-permeable sealing portion 82 is made round and its diameter is 6-6.6 mm, completely closing the space for containing 41 and sealing on the end surface of the body of the tube 40.

Alternatively, the material of the second air-permeable sealing portion 82 may first be cut by a mold, a knife mold, or a laser to cut out the required outer shape, and then glued to the cooling member 10. Or the second air-permeable sealing portion 82 is first glued to the cooling member 10, and then the required outer shape is cut out by a mold, a knife mold, or a laser.

By having the first air-permeable sealing portion 81 and the second air-permeable sealing portion 82, it is possible to increase the amount of tobacco smoke stored in the cooling element 10, reduce the complexity of assembly, and control the suction resistance without any consideration during assembly. In addition, during subsequent assembly, the filter element 70 can be prevented from entering the cooling element 10.

With reference to Fig. 13-16, Fig. 13 is a schematic view of a cigarette cartridge in another embodiment of the present invention. Fig. 14 is a partial schematic view of a cigarette cartridge in another embodiment of the present invention. Fig. 15 is a schematic view of a cigarette cartridge in yet another embodiment of the present invention. Fig. 16 is an exploded view of a cigarette cartridge in one embodiment of the present invention. In the present embodiment, the cigarette cartridge 1 also includes a decoration 90 that is connected by a bell to the body of the tube 40 and the sealing element 50, the decoration 90 is also provided with a first end surface 91 and a second end surface 92 located oppositely, the first end surface 91 is aligned with the surface of the sealing element 50 deviated from the body of the tube 40, and the second end surface 92 is aligned with the surface of the filter element 70 deviated from the sealing element 50.

The cigarette cartridge 1 may also include a decoration 90 which is connected by a bell to the tube body 40 and the sealing element 50, and both the tube body 40 and the sealing element 50 are protected by the decoration 90. Various patterns, shapes, colors and textures may be provided on the decoration 90 to improve the appearance of the cigarette cartridge 1. According to the present embodiment, both ends of the decoration 90 will be aligned with the sealing element 50 and the filter element 70, respectively, thereby improving the flatness of the cigarette cartridge 1.

Alternatively, the decoration material 90 includes, among other things, food grade tipping paper. Further alternatively, the decoration material 90 includes, among other things, food grade tipping paper of 32-40 g/ ^m2 .

Alternatively, the length of the decoration 90 in the axial direction of the tube body 40 is 42-46 mm. In the radial direction of the tube body 40, the outer diameter of the decoration 90 is 7.15-7.3 mm.

Referring to Fig. 17, Fig. 17 is an exploded view of a cigarette cartridge in yet another embodiment of the present invention. In the present embodiment, the tube body has two zones with an avoidance sign 93 corresponding to a storage and accommodation space 71.

The present embodiment can remind the user of the position of the storage and accommodation space 71 in the area with the avoidance sign 93 corresponding to the pipe body 40, and prevent the pipe body 40 and the decoration 90 corresponding to the storage and accommodation space 71 from breaking when the user smokes, thereby exposing the functional element 30. In particular, the pattern, color, texture and the like can be set in the area with the sign corresponding to the decoration 90.

Referring to Fig. 18, Fig. 18 is a cross-sectional view of the cigarette cartridge in the radial direction. In the present embodiment, the tube body 40 also has two zones with a compression mark 94 located opposite to each other, and the connection line between the centers of the two zones with a compression mark 94 is perpendicular to the expansion direction of the storage and accommodation space 71.

In this embodiment, two zones with a compression sign 94 can be provided to remind the user of the compression position, so that the user can squeeze the functional element 30 with a hand to break it when smoking, thereby releasing the functional part 32. In addition, the connection line between the centers of the two zones with a compression sign 94 is perpendicular to the expansion direction of the storage and accommodation space 71. That is, the zone with a compression sign 94 is not located in the expansion direction of the storage and accommodation space 71, but is perpendicular to the expansion direction of the storage and accommodation space 71. In this case, it is possible to squeeze the filter element 70 and use the filter element 70 to better transmit the force to the functional element 30. If the zone with a compression sign 94 is not located in the expansion direction of the storage and accommodation space 71, the applied pressing force is almost not transmitted to the functional element 30, and the functional element 30 is destroyed.

The contents provided by the embodiment of the present invention have been described in detail above. The description of the above examples is used solely to help understand the method and its basic idea of the present invention. In addition, technical personnel in this technical field can make changes in specific implementation methods and application areas based on the ideas of the present invention. Therefore, the contents of the present description should not be understood as limiting the present invention.

Claims (26)

1. A filter unit of a cigarette cartridge, characterized in that the filter unit contains: a filter element in the radial direction of which a storage and placement space is installed, and a functional element fixed in the storage and placement space, and the filter element contacts a portion of the outer surface of the functional element, wherein the functional element is attached to the side wall of the storage and placement space, the filter element and the functional element are fitted with interference, and the ratio of the size of the opening of the storage and placement space to the size of the functional element in the axial direction of the filter element is (0.9-0.95):1. 2. The filter unit according to claim 1, characterized in that the filter element has a first surface and a second surface located opposite each other in the radial direction, and the storage and placement space penetrates the first surface and the second surface. 3. The filter block according to item 1, characterized in that the side wall has a groove in which the functional element is located. 4. The filter unit according to item 2, characterized in that the ratio of the size of the opening of the storage and placement space to the size of the filter element in the axial direction of the filter element is 1:(2.8-4). 5. The filter unit according to item 1, characterized in that the length of the filter element in the axial direction of the filter element is 8-10 mm, and in the radial direction of the filter element, the diameter of the filter element is 6.5-7 mm. 6. The filter unit according to item 1, characterized in that the functional element includes a housing and a functional part located in the housing in a liquid or gaseous state, wherein the housing is attached to the filter element; the housing is designed with the possibility of rupture when exposed to a given external force in the radial direction of the filter element. 7. The filter unit according to item 6, characterized in that when the housing ruptures, the functional part in the liquid state can also be adsorbed to the filter element. 8. The filter unit according to item 1, characterized in that the functional element has a spherical, ellipsoidal or cylindrical shape. 9. The filter unit according to item 8, characterized in that when the functional element has a spherical shape, the diameter is 3-4 mm; when the functional element has an ellipsoidal or cylindrical shape, the outer diameter of the filter element in the radial direction is 3-4 mm, and the length of the filter element in the axial direction is 4-7 mm. 10. A cigarette cartridge, characterized in that the cigarette cartridge includes: the body of the tube where the space for accommodation is installed; a sealing element sealed at one end of the tube body and closing the space for containment; a tobacco smoke element located in the containing space and adjacent to the sealing element; a cooling element located in the containing space and adjacent to the tobacco smoke element; and a filter unit of a cigarette cartridge according to any one of paragraphs. 1-9, located in the space for containing and adjacent to the cooling element. 11. A cigarette cartridge according to claim 10, characterized in that the cooling element has a first through-hole passing through the first and second ends located opposite each other, the cigarette cartridge also includes a first air-permeable sealing portion and a second air-permeable sealing portion, the first air-permeable sealing portion is fixed at the first end and closes the first through-hole, and the second air-permeable sealing portion is fixed at the second end and closes the second through-hole; the first air-permeable sealing portion is located near the tobacco smoke element, and the second air-permeable sealing portion approaches the sealing element. 12. A cigarette cartridge according to claim 11, characterized in that the first air-permeable sealing portion is provided with at least one first opening and/or the second air-permeable sealing portion is provided with at least one second opening. 13. A cigarette cartridge according to item 10, characterized in that the tube body has a zone with an avoidance sign corresponding to the space for storage and placement. 14. A cigarette cartridge according to claim 10, characterized in that the tube body also has two zones with a compression sign located opposite each other, and the connection line between the centers of the two zones with a compression sign is perpendicular to the direction of expansion of the storage and placement space. 15. A cigarette cartridge according to item 10, characterized in that the length of the tube body is 42-46 mm, the outer diameter is 6.9-7.1 mm, and the inner diameter is 6.4-6.65 mm. 16. A cigarette cartridge according to item 10, characterized in that the length of the cooling element is 16-23 mm, and the outer diameter is 6-6.6 mm. 17. A cigarette cartridge according to claim 10, characterized in that the cigarette cartridge also includes a decoration that is connected by a bell to the tube body and the sealing element and is provided with a first end surface and a second end surface located opposite and in the axial direction of the tube, the first end surface is aligned with the surface of the sealing element deflected from the tube body, and the second end surface is aligned with the surface of the filter element deflected from the sealing element. 18. A cigarette cartridge according to item 17, characterized in that in the axial direction of the tube body the length of the decoration is 42-46 mm, in the radial direction of the tube body the outer diameter of the decoration is 7.15-7.3 mm.