FILTER ASSEMBLY AND CARTRIDGE

TECHNICAL FIELD

This disclosure relates to the field of cartridge technology, and in particular to a filter assembly and a cartridge.

BACKGROUND

Nowadays, more and more users use cartridges to replace traditional cigarettes, so as to reduce damages caused by the traditional cigarettes to bodies of the users. An existing cartridge generally includes a filter assembly, but at present, a function of the filter assembly cannot meet an increasing demand of the user.

SUMMARY

In a first aspect of the present disclosure, a filter assembly is provided. The filter assembly includes a filter member and a functional member. The filter member defines a receiving space in a radial direction of the filter member. The functional member is fixed in the receiving space. The filter member is in contact with part of an outer surface of the functional member.

In a second aspect of the present disclosure, a cartridge is provided. The cartridge includes a tube, a closing member, a smoke generating member, a cooling member, and a filter assembly. The filter assembly includes a filter member and a functional member. The filter member defines a receiving space in a radial direction of the filter member. The functional member is fixed in the receiving space. The filter member is in contact with part of an outer surface of the functional member. The tube defines an accommodating space. The closing member is sealed to one end of the tube. The accommodating space is shielded by the closing member. The smoke generating member is disposed in the accommodating space and adjacent to the closing member. The cooling member is disposed in the accommodating space and adjacent to the smoke generating member. The filter assembly is disposed in the accommodating space and adjacent to the cooling member.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in implementations of the present disclosure more clearly, the accompanying drawings required for use in the implementations of the present disclosure will be described below.

FIG. 1 is a schematic perspective structural view of a filter assembly according to an implementation of the present disclosure.

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

FIG. 3 is a schematic cross-sectional view of FIG. 1 taken along line A-A.

FIG. 4 is a schematic structural view of a filter member according to an implementation of the present disclosure.

FIG. 5 is a schematic structural view of a functional member according to an implementation of the present disclosure.

FIG. 6 is a schematic structural view of a functional member according to another implementation of the present disclosure.

FIG. 7 is a schematic structural view of a filter assembly according to another implementation of the present disclosure.

FIG. 8 is an exploded schematic view of FIG. 7.

FIG. 9 is a schematic structural view of a cartridge according to an implementation of the present disclosure.

FIG. 10 is a schematic structural view of a tube according to an implementation of the present disclosure.

FIG. 11 is a schematic structural view of a cooling member according to an implementation of the present disclosure.

FIG. 12 is a partial schematic structural view of a cartridge according to an implementation of the present disclosure.

FIG. 13 is a schematic structural view of a cartridge according to another implementation of the present disclosure.

FIG. 14 is a partial schematic view of a cartridge according to another implementation of the present disclosure.

FIG. 15 is a schematic structural view of a cartridge according to yet another implementation of the present disclosure.

FIG. 16 is an exploded view of a cartridge according to an implementation of the present disclosure.

FIG. 17 is a schematic structural view of a cartridge according to yet another implementation of the present disclosure.

FIG. 18 is a schematic cross-sectional view of a cartridge in a radial direction according to an implementation of the present disclosure.

Description of reference signs of the accompanying drawings: cartridge—1, filter assembly—2, filter member—70, receiving space—71, first surface—72, second surface—73, groove—74, functional member—30, housing—31, functional portion—32, tube—40, accommodating space—41, closing member—50, smoke generating member—60, cooling member—10, passage—100, first end—101, second end—102, first air-permeable sealing-portion 81, second air-permeable sealing-portion—82, hole—83, decorative member—90, first end—surface—91, second end—surface—92, avoidance mark region—93, squeezing mark region—94.

DETAILED DESCRIPTION

The following are preferred implementations of the present disclosure. It may be noted that, for those of ordinary skill in the art, without departing from a concept of the present disclosure, several modifications and improvements can be made, and these modifications and improvements are also regarded to fall in the protection scope of the present disclosure.

A filter assembly is provided in implementations. The filter assembly includes a filter member and a functional member. The filter member defines a receiving space in a radial direction of the filter member. The functional member is fixed in the receiving space. The filter member is in contact with part of an outer surface of the functional member.

The filter member has a first surface and a second surface opposite to each other in the radial direction of the filter member. The receiving space extending through the first surface and the second surface.

The functional member abuts against a sidewall of the receiving space.

The filter member is in interference fit with the functional member. In an axial direction of the filter member, a ratio of an opening dimension of the receiving space to a dimension of the functional member is (0.9-0.95): 1.

A groove is defined on the sidewall. Part of the functional member is disposed in the groove.

In an axial direction of the filter member, a ratio of an opening dimension of the receiving space to a dimension of the filter member is 1:(2.8-4).

The filter member has a length of 8 mm-10 mm in an axial direction of the filter member, and a diameter of 6.5 mm-7 mm in the radial direction of the filter member.

The functional member includes a housing and a functional portion disposed in the housing. The functional portion is in a liquid state or a gaseous state. The housing abuts against the filter member. The housing is configured to be broken when the housing is subjected to a preset external force in the radial direction of the filter member.

When the housing is broken, the functional portion in the liquid state is adsorbed onto the filter member.

The functional member may be spherical, ellipsoidal, or cylindrical.

When the functional member is spherical, the functional member has a diameter of 3 mm-4 mm. When the functional member is ellipsoidal or cylindrical, the functional member has an outer diameter of 3 mm-4 mm in the radial direction of the filter member, and a length of 4 mm-7 mm in an axial direction of the filter member.

A cartridge is provided in implementations. The cartridge includes a tube, a closing member, a smoke generating member, a cooling member, and the filter assembly provided in the above implementations of the present disclosure. The tube defines an accommodating space. The closing member is sealed to one end of the tube. The accommodating space is shielded by the closing member. The smoke generating member is disposed in the accommodating space and adjacent to the closing member. The cooling member is disposed in the accommodating space and adjacent to the smoke generating member. The filter assembly is disposed in the accommodating space and adjacent to the cooling member.

The cooling member has a first end and a second end opposite to the first end, and defines a passage extending through the first end and the second end. The cartridge further includes a first air-permeable sealing-portion and a second air-permeable sealing-portion. The first air-permeable sealing-portion is fixed to the first end. The passage is shielded by the first air-permeable sealing-portion. The second air-permeable sealing-portion is fixed to the second end. The passage is shielded by the second air-permeable sealing-portion. The first air-permeable sealing-portion is adjacent to the smoke generating member. The second air-permeable sealing-portion is adjacent to the filter member.

The first air-permeable sealing-portion defines at least one first hole, and/or the second air-permeable sealing-portion defines at least one second hole.

The tube has an avoidance mark region corresponding to the receiving space.

The tube further has two squeezing mark regions opposite to each other. A connecting line of centers of the two squeezing mark regions is perpendicular to an extending direction of the receiving space.

The tube has a length of 42 mm-46 mm, an outer diameter of 6.9 mm-7.1 mm, and an inner diameter of 6.4 mm-6.65 mm.

The cooling member has a length of 16 mm-23 mm and an outer diameter of 6 mm-6.6 mm.

The cartridge further includes a decorative member. The decorative member is sleeved on the tube and the closing member. The decorative member has a first end-surface and a second end-surface opposite to each other. The first end-surface is flush with a surface of the closing member away from the tube. The second end-surface is flush with a surface of the filter member away from the closing member.

The decorative member has a length of 42 mm-46 mm in an axial direction of the tube, and an outer diameter of 7.15 mm-7.3 mm in a radial direction of the tube.

Prior to introducing the technical solutions of the present disclosure, the technical problems in the related art are introduced in detail below.

The traditional cigarette contains a large amount of tar and nicotine, which seriously endangers the physical health of the user. With the increasing health requirements of the user, a cartridge 1 has been developed. A smoke generating member 60 in the cartridge 1 is generally free of tobacco components, or contains a small amount of tobacco components. In addition, the cartridge 1 is generally a heat-not-burn cartridge 1, that is, the smoke generating member 60 is heated but the smoke generating member 60 is not burned. In this way, harmful substances such as tar and nicotine can be avoided. Meanwhile, the surrounding environment is not polluted, and the surrounding people are not affected, thereby ensuring the physical health of the smoker and the surrounding people.

Based on the above differences, more and more users now replace traditional cigarettes with the cartridges 1, so as to reduce the damage to the bodies of the users caused by the traditional cigarettes. A filter assembly 2 in the cartridge 1 generally functions to filter out harmful substances and lower the temperature of the smoke, so that the oral cavity of the user is prevented from being scalded when drawing due to excessively high smoke temperature. However, at present, the function of the filter assembly 2 cannot meet the increasing demands of users. For example, at present, the taste of the cartridge 1 is generally determined by the original smell of the smoke generating member 60. Alternatively, the taste of the cartridge 1 is obtained by adding edible flavors and fragrances to the smoke generating member 60. However, due to factors such as the volume and capacity of the smoke generating member 60, there are certain limitations on the aroma, sustainability, and taste richness of the cartridge.

In view of this, in order to solve the above problems, a filter assembly 2 is provided in the present disclosure. Reference can be made to FIG. 1 to FIG. 6, where FIG. 1 is a schematic perspective structural view of a filter assembly according to an implementation of the present disclosure, FIG. 2 is an exploded view of FIG. 1, FIG. 3 is a schematic cross-sectional view of FIG. 1 taken along line A-A, FIG. 4 is a schematic structural view of a filter member according to an implementation of the present disclosure, FIG. 5 is a schematic structural view of a functional member according to an implementation of the present disclosure, and FIG. 6 is a schematic structural view of a functional member according to another implementation of the present disclosure.

A filter assembly 2 is provided in this implementation. The filter assembly 2 includes a filter member 70 and a functional member 30. The filter assembly 2 defines a receiving space 71 in a radial direction of the filter member 70. The functional member 30 is fixed in the receiving space 71. The filter member 70 is in contact with part of an outer surface of the functional member 30.

The filter assembly 2 is mainly used for filtering out harmful substances in the smoke, and further cooling the smoke to avoid scalding the oral cavity of the user. The filter assembly 2 provided in this implementation generally includes the filter member 70 and the functional member 30. The individual parts, and the fit between the individual parts, will be described in detail next.

The filter member 70 is a structure that plays a major role in the filter assembly 2. The filter member 70 can be used for filtering out some harmful substances, and further lowering the temperature of the smoke. Optionally, a material of the filter member 70 includes, but is not limited to, food-grade polylactic acid (PLA), food-grade cellulose acetate, and the like. Further optionally, when the material of the filter member 70 is PLA, pultrusion may be used. Optionally, the filter member 70 has a length L5 of 8 mm-10 mm in an axial direction of the filter member 70, and a diameter d5 of 6.5 mm-7 mm in the radial direction of the filter member 70.

The receiving space 71 may be defined in the radial direction of the filter member 70, and for receiving a subsequent functional member 30. The receiving space 71 may be a groove or a hole, which is not limited in this implementation. When the receiving space 71 is a hole, the filter member 70 has a first surface 72 and a second surface 73 opposite to each other in the radial direction of the filter member 70. The receiving space 71 extends through the first surface 72 and the second surface 73. In this way, difficulty in defining the receiving space 71 can be reduced. When the receiving space 71 is a groove, the receiving space 71 only extends through the first surface 72 or the second surface 73. In this way, the functional member 30 can be prevented from falling off from the other side surface of the filter member 70. In addition, the shape of the receiving space 71 is not limited in this implementation. In this implementation, for example, the receiving space 71 extends through both the first surface 72 and the second surface 73.

The functional member 30 is used for realizing various functions. In other words, various functions can be realized by means of factors such as the shape, structure, and material of the functional member 30. For example, if the material of the functional member 30 is a heat-absorbing material such as metal, plastic, etc., when the smoke is transmitted to the functional member 30, the heat-absorbing material can be utilized to absorb a large amount of heat, thereby further improving the cooling effect. If the functional member 30 has various fragrances, the functional member 30 can be utilized to change the taste of the smoke, thereby improving the quality of the smoke, and improving the saturation, diversity, and sustainability of the taste. If the functional member 30 has various traditional Chinese medicine or western medicine ingredients, the functional member 30 can be utilized to enable the smoke to carry various traditional Chinese medicine or western medicine ingredients. Therefore, when the user draws, the various traditional Chinese medicine or western medicine ingredients can also be breathed into the oral cavity, so that the functional member has health care and treatment functions.

In this implementation, for example, the functional member 30 is a flavoring agent, so as to change the taste of the smoke. Optionally, the functional member 30 includes a housing 31 and a functional portion 32 disposed in the housing 31. The functional portion 32 is in a liquid state and a gaseous state. The housing 31 abuts against the filter member 70. The housing 31 is configured to be broken when the housing 31 is subjected to a preset external force in the radial direction of the filter member 70. The functional member 30 includes the housing 31 and the functional section 32 disposed in the housing 31. The functional section 32 may be in the liquid state or the gaseous state. The housing 31 abuts against the filter member 70, for fixation. In addition, the housing 31 can be broken when the housing 31 is subjected to the preset external force in the radial direction of the filter member 70. For example, when the user pinches the filter member 70 by hand in the radial direction of the filter member 70, if a squeezing force is greater than the preset external force, the housing 31 can be crushed, causing the housing 31 to be shattered, cracked, or broken with a hole 83, thereby exposing the functional portion 32 in the housing 31. In this case, the functional portion 32 may be carried along with the smoke to move when the smoke passes through the filter member 70, and the functional portion 32 may also move by a drawing force of the user, so that the functional portion 32 and the smoke are finally drawn into the oral cavity of the user. The use of the functional member 30 improves the taste and smell experience of the user. Further optionally, the functional member 30 is molded in the form such as extrusion blow, canning, etc.

Optionally, when the housing 31 is broken, the functional portion 32 in the liquid state may also be adsorbed onto the filter member 70. In this way, during a drawing process of the user, the user can more easily breathe the functional portion 32 into the oral cavity when the smoke passes through, and aroma can continuously come out from filter cotton. Therefore, the user experience can be improved. The functional portion 32 may also be utilized to provide a certain cooling effect.

Optionally, the functional portion 32 includes food-grade fragrance, including but not limited to fragrance blends of one or more of blueberry flavor, apple flavor, watermelon flavor, mango flavor, grape flavor, and other fruit and vegetable flavors.

Optionally, the functional member 30 may be spherical, ellipsoidal, or cylindrical. As illustrated in FIG. 5, when the functional member 30 is spherical, the functional member 30 has a diameter d3 of 3 mm-4 mm. As illustrated in FIG. 6, when the functional member 30 is ellipsoidal or cylindrical, the functional member 30 has an outer diameter d3 of 3 mm-4 mm in the radial direction D2 of the filter member 30, and a length L3 of 4 mm-7 mm in an axial direction D1 of the filter member 30. In addition, in the following description, the axial directions all are denoted by D1, and the radial directions all are denoted by D2. Since the filter member 70 has the thickness, and the filter member 70 defines the receiving space 71, the filter member 70 has an outer peripheral sidewall and an inner peripheral sidewall. The outer peripheral sidewall has an outer appearance surface of the filter member 70. The inner peripheral sidewall encloses to define receiving space 71. Therefore, the filter member 70 has two dimensions in the radial direction of the filter member 70, one being the dimension between two opposite sides of the outer peripheral sidewall (e.g., the outer diameter), and the other being the dimension between two opposite sides of the inner peripheral sidewall (e.g., the inner diameter). In other words, in the radial direction of the filter member 70, the dimension between the two opposite sides of the outer peripheral sidewall is 3 mm-4 mm. Furthermore, for the length, outer diameter, inner diameter, axial direction, and radial direction that are mentioned below in the present disclosure, the same understanding can be made, which will not be repeated in the present disclosure.

For the filter assembly 2 provided in this implementation, firstly, the functional member 30 is additionally disposed to improve a cooling function, or the filter member 70 has other functions besides filtering, such as fragrance enhancement, health care, treatment, etc., so that the functional types of the filter assembly 2 are improved, and the taste and drawing effect for the user are improved.

Secondly, the functional member 30 is fixed in the receiving space 71 defined by the filter member 70, and is in contact with the filter member 70, so that the functional member 30 is better fixed in the filter member 70, thereby preventing the functional member 30 from moving in the filter member 70. In addition, when the functional member 30 is disposed in the filter member 70, since the user is in direct contact with the filter member 70 when drawing, the drawing force at the filter member 70 is maximum, and the performance and effect of the functional member 30 can be further improved.

In addition, when the filter member 70 is fixed in the receiving space 71 defined by the filter member 70 in the radial direction of the filter member 70, the assembly difficulty of the filter member 70 and the functional member 30 can be reduced.

Referring to FIG. 3 again, in this implementation, the functional member 30 abuts against a sidewall of the receiving space 71. In this implementation, the functional member 30 can abut against the sidewall of the receiving space 71, so that the functional member 30 is fixed to the filter member 70. In other implementations, the functional member 30 may be bonded to the sidewall of the receiving space 71.

Referring to FIG. 4 to FIG. 5 again, in this implementation, in an axial direction of the filter member 70, the filter member 70 is in interference fit with the functional member 30. A ratio of an opening dimension do of the receiving space 71 to a dimension of the functional member 30 is (0.9-0.95): 1. It is ensured that a certain amount of interference is maintained between the filter member 70 and the functional member 30. In addition, in the above range, it can be ensured that the functional member 30 is fixed to the filter member 70 without damaging the functional member 30. If in the axial direction of the filter member 70, the ratio of the opening dimension of the receiving space 71 to the dimension of the functional member 30 is too little, for example, less than 0.9:1, the receiving space 71 is too small in this case, so that the filter member 30 may be damaged due to the too small inner diameter. If in the axial direction of the filter member 70, the ratio of the opening dimension of the receiving space 71 to the dimension of the functional member 30 is too great, for example, greater than 0.95:1, the functional member 30 is unable to be mounted into the filter member 70 through interference fit.

Reference can be made to FIG. 7 and FIG. 8 together, where FIG. 7 is a schematic structural view of a filter assembly according to another implementation of the present disclosure, and FIG. 8 is an exploded schematic view of FIG. 7. In this implementation, a groove 74 is defined on the sidewall. Part of the functional member 30 is disposed in the groove 74.

In this implementation, on the basis of the interference fit, the groove 74 is defined on the sidewall, and the part of the functional member 30 is disposed in the groove 74. The squeezing force generated by the interference fit may cause the filter member to be squeezed and deformed, causing other parts such as the tube 40 to be also deformed, resulting in the problem of uneven shape finally. For example, in the axial direction, the opposite ends of the filter member 70 may bulge at positions corresponding to the functional member. The groove 74 can be used to solve the above problem by relieving the squeezing force generated by the interference fit. In addition, due to the existence of the groove 74, the position of the functional member 30 in the filter member 70 can be further limited, thereby improving the accuracy of the position of the functional member 30 in the filter member 70.

In other implementations, the functional member 30 may be bonded to the sidewall of the filter member 70 by, such as, adhesive, so that the functional member 30 is fixed to the filter member 70.

Referring to FIG. 4 again, in this implementation, in an axial direction of the filter member 70, a ratio of an opening dimension do of the receiving space 71 to a dimension L5 of the filter member 70 is 1:(2.8-4).

In the axial direction of the filter member 70, the opening dimension of the receiving space 71 to the length of the filter member 70 is 1:(2.8-4), so that it is ensured that the functional member 30 does not fall out of the receiving space 71, and two end surfaces of the filter member 70 are prevented from being not uneven caused by squeezing and deformation of the filter member 70. If the opening dimension of the receiving space 71 is too large, not only the functional member 30 cannot be fixed, but also the filter member 70 is too small, thereby weakening the function of the filter member 70 itself. In other words, the dimension of the filter member 70 in the length direction is reduced, and the deformation resistance of the filter member 70 is weakened. When the functional member 30 is pressed into the receiving space 71 of the filter member 70, the filter member 70 is squeezed in the length direction, and the two end surfaces of the filter member 70 may be deformed and bulge outwards, thereby affecting the appearance performance. If the opening dimension of the receiving space 71 is too small, the functional member 30 may be damaged due to the excessive squeezing force, that is, the resilience force, applied to the functional member 30 after the functional member 30 is mounted.

Reference can be made to FIG. 9 to FIG. 11, where FIG. 9 is a schematic structural view of a cartridge according to an implementation of the present disclosure, FIG. 10 is a schematic structural view of a tube according to an implementation of the present disclosure, and FIG. 11 is a schematic structural view of a cooling member according to an implementation of the present disclosure. In this implementation, a cartridge 1 is further provided. The cartridge 1 includes a tube 40, a closing member 50, a smoke generating member 60, a cooling member 10, and the filter assembly 2 provided in the above implementations of the present disclosure. The tube defines an accommodating space 41. The closing member 50 is sealed to one end of the tube 40. The accommodating space 41 is shielded by the closing member 50. The smoke generating member 60 is disposed in the accommodating space 41 and adjacent to the closing member 50. The cooling member 10 is disposed in the accommodating space 41 and close to the smoke generating member 60. The filter assembly 2 is disposed in the accommodating space 41 and adjacent to the cooling member 10.

In this implementation, in addition to the filter assembly 2, the cartridge 1 including the filter assembly 2 is further provided. Optionally, the cartridge 1 in this implementation is a heat-not-burn cartridge 1. The cartridge 1 further includes the tube 40, the closing member 50, the smoke generating member 60, and the cooling member 10. Various parts will be described in detail in this implementation.

The tube 40 is a main part of the cartridge 1 and is used for mounting, fixing, and carrying various parts. The tube 40 defines the accommodating space 41. The accommodating space 41 may by defined by penetrating through two opposite ends of the tube 40. Optionally, the tube 40 with the accommodating space 41 may be formed by penetrating through a solid tube 40, the tube 40 with the accommodating space 41 may be formed by the injection molding process, or the tube 40 with the accommodating space 41 may be formed by winding a material having a certain thickness.

Optionally, the tube 40 is made of a food-grade material. Further optionally, the food-grade material includes, but is not limited to, one or more of white cardboard paper and kraft paper. Specifically, the food-grade material includes, but is not limited to, white cardboard paper of 50 g/m²-200 g/m², kraft paper of 50 g/m²-200 g/m², and the like.

Optionally, the tube 40 may have a length L4 of 42 mm-46 mm, an outer diameter d4 of 6.9 mm-7.1 mm, and an inner diameter d4 of 6.4 mm-6.65 mm.

The closing member 50 is a part for sealing one end of the two open ends of the accommodating space 41 of the tube 40, that is, the closing member 50 is sealed to the end surface of the tube 40, and the accommodating space 41 is shielded by the closing member 50, so as to prevent the subsequent smoke generating member 60 from falling out of the accommodating space 41, and also prevent the smoke generating member 60 from being impacted by an external force and prevent the smoke generating member 60 from getting damp.

Optionally, the material of the closing member 50 includes a food-grade material. Further optionally, the food-grade material includes, but is not limited to, one or more of silk tissue paper, highly air-permeable paper, and butter paper. Specifically, the food-grade material includes, but is not limited to, silk tissue paper of 10 g/m²-50 g/m², highly air-permeable paper of 10 g/m²-50 g/m², butter paper of 45 g/m²-105 g/m², and the like.

Optionally, the closing member 50 is circular and has a diameter of 6.9 mm-7.2 mm. The closing member 50 can completely shield the accommodating space 41 and seal the end surface of the tube 40.

Optionally, a desired external shape may be obtained by performing die punching, cutter punching, or laser cutting on the material of the closing member 50 first, and then the closing member 50 with the desired external shape may be sealed to the tube 40. Alternatively, the closing member 50 may be sealed to the tube 40 first, and then the desired external shape may be obtained by die punching, cutter punching, or laser cutting.

The smoke generating member 60 is a main part in the cartridge 1. The cartridge 1 generates smoke for drawing by a user mainly by heating the smoke generating member 60. Optionally, the smoke generating member 60 is made of various herbs. Optionally, the smoke generating member 60 is in a sheet shape or a granular shape.

The smoke generating member 60 may be disposed in the accommodating space 41 and close to the closing member 50, that is, abut against the closing member 50. Optionally, in an axial direction of the tube 40, the smoke generating member 60 has a length of 13 mm-18 mm. In the radial direction, the smoke generating member 60 has a diameter of 6.4 mm-6.6 mm.

The cooling member 10 is a main part that can lower the temperature in the filter assembly 2. The cooling member 10 has a structure having a passage 100. Specifically, the passage 100 is defined by penetrating through a first end-surface 91 and a second end-surface 92 opposite to each other, so that the temperature of the smoke is lowered after the smoke passes through the passage 100. Optionally, the cooling member 10 with the passage 100 may be formed by penetrating through a solid cooling member 10, the cooling member 10 with the passage 100 may be formed by the injection molding process, or the cooling member 10 with the passage 100 may be formed by winding a material having a certain thickness.

Optionally, the material of the cooling member 10 includes silica gel, a food-grade material, and the like. The “food-grade material” mentioned above refers to a material that can reduce or even not produce toxic or harmful substances to a human body or the environment when being heated. Further optionally, the food-grade material includes, but is not limited to, one or more of white cardboard paper, kraft paper, and PLA. Specifically, the cooling member 10 includes, but is not limited to, white cardboard paper of 50 g/m²-200 g/m², kraft paper of 50 g/m²-200 g/m², and the like.

Optionally, the cooling member 10 has a length L1 of 16 mm-23 mm and an outer diameter d1 of 6 mm-6.6 mm. By designing the cooling member 10 in the above dimension range, not only can the cooling performance be improved, but also the concentration of the smoke and the resistance to draw during drawing can be ensured. If the outer diameter of the cooling member 10 is too small, the resistance of drawing the smoke is too large. If the outer diameter of the cooling member 10 is too large, the concentration of the smoke in the cooling member 10 is too small, so that the taste of drawing the smoke is affected. Therefore, with the outer diameter of the cooling member 10 being 6 mm-6.6 mm, the smoke in the cooling member 10 can have sufficient concentration under the condition of ensuring little resistance to draw. It may be noted that the resistance to draw refers to a resistance force of drawing, where the resistance force of drawing refers to a resistance force encountered by the user when drawing the smoke into the cooling member 10 and out of the cooling member 10.

Optionally, when the tube 40 and the cooling member 10 are formed by winding, a convolute-wound manner or a spiral-wound manner may be adopted. The tube 40 and the cooling member 10 may be formed by the same wound manner, or may be formed by different wound manners. In the convolute-wound manner, four to five layers of food-grade paper each having a single thickness range and a weight of 50 g-200 g are laminated together, and then only a seam of the last layer is fixed by applying a glue with a width of 1 mm-2 mm, so that the difficulty of winding can be reduced. In the spiral-wound manner, three layers of food-grade paper may be adopted, a thickness ratio of the three layers from one side to the other side is 8:10:6, the three layers are wound together at an angle of 135°+45° in a spiral form, and the glue is fully coated between layers, so that the three layers can be firmly bonded together. After a wound core is taken out, the spiral-wound paper tube remained has good stability, strength, and roundness.

In the cartridge 1 provided in this implementation, by adopting the filter assembly 2 provided in the above implementations of the present disclosure, the cooling function of the cartridge 1 can be improved, or the cartridge 1 can be enabled to have other functions, thereby improving the functional types of the cartridge 1. In addition, the assembly difficulty can be reduced, and the use effect of the functional member can be improved. Moreover, by disposing the functional member 30 in the filter member 70, when a user uses the cartridge 1 with a smoking set, the functional member 30 can always be exposed to the smoking set, so that the user can squeeze the functional member 30 at any time.

Reference can be made to FIG. 12, which is a partial schematic structural view of a cartridge according to an implementation of the present disclosure. In this implementation, the cooling member 10 defines a passage 100 extending through the first end 101 and the second end 102. The cartridge 1 further 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 to the first end 101. The passage 100 is shielded by the first air-permeable sealing-portion 81. The second air-permeable sealing-portion 82 is fixed to the second end 102. The passage is shielded by the second air-permeable sealing-portion 82. The first air-permeable sealing-portion 81 is adjacent to the smoke generating member 60. The second air-permeable sealing-portion 82 is adjacent to the filter member 70.

The cartridge 1 may further includes a first air-permeable sealing-portion 81 fixed to the first end 101. When the first air-permeable sealing-portion 81 shields the passage 100, the first air-permeable sealing-portion 81 may have a sealing function. As for an air-permeable function, the material of the first air-permeable sealing-portion 81 may cause the first air-permeable sealing-portion 81 to have the air-permeable function, or the first air-permeable sealing-portion 81 may define at least one hole 83 to enable the first air-permeable sealing-portion 81 to have the air-permeable function. Therefore, the smoke of the smoke generating member 60 can enter the cooling member 10 through the first air-permeable sealing-portion 81.

Optionally, the material of the first air-permeable sealing-portion 81 includes a food-grade material. Further optionally, the food-grade material includes, but is not limited to, one or more of silk tissue paper, highly air-permeable paper, and butter paper. Specifically, the food-grade material includes, but is not limited to, silk tissue paper of 10 g/m²-50 g/m², highly air-permeable paper of 10 g/m²-50 g/m², butter paper of 45 g/m²-105 g/m², and the like.

Optionally, the first air-permeable sealing-portion 81 is circular and has a diameter of 6 mm-6.6 mm. The first air-permeable sealing-portion 81 can completely shield the accommodating space 41, and is bonded to the end surface of the tube 40.

Optionally, a desired external shape may be obtained by performing die punching, cutter punching, or laser cutting on the material of the first air-permeable sealing-portion 81 first, and then the first air-permeable sealing-portion 81 with the desired external shape may be bonded to the cooling member 10. Alternatively, the first air-permeable sealing-portion 81 may be bonded to the cooling member 10 first, and then the desired external shape may be obtained by die punching, cutter punching, or laser cutting.

The cartridge 1 may further include a second air-permeable sealing-portion 82 fixedly fixed to the second end 102. When the second air-permeable sealing-portion 82 shields the passage 100, the second air-permeable sealing-portion 82 may have a sealing function. As for an air-permeable function, the material of the second air-permeable sealing-portion 82 may cause the second air-permeable sealing-portion 82 to have the air-permeable function, or the second air-permeable sealing-portion 82 may define at least one hole 83 to enable the second air-permeable sealing-portion 82 to have the air-permeable function. Therefore, the smoke of the smoke generating member 60 can enter the cooling member 10 through the second air-permeable sealing-portion 82.

Optionally, the material of the second air-permeable sealing-portion 82 includes a food-grade material. Further optionally, the food-grade material includes, but is not limited to, one or more of silk tissue paper, highly air-permeable paper, and butter paper. Specifically, the food-grade material includes, but is not limited to, silk tissue paper of 10 g/m²-50 g/m², highly air-permeable paper of 10 g/m²-50 g/m², butter paper of 45 g/m²-105 g/m², and the like.

Optionally, the second air-permeable sealing-portion 82 is circular and has a diameter of 6 mm-6.6 mm. The second air-permeable sealing-portion 82 can completely shield the accommodating space 41, and is bonded to the end surface of the tube 40.

Optionally, a desired external shape may be obtained by performing die punching, cutter punching, or laser cutting on the material of the second air-permeable sealing-portion 82 first, and then the second air-permeable sealing-portion 82 with the desired external shape may be bonded to the cooling member 10. Alternatively, the second air-permeable sealing-portion 82 may be bonded to the cooling member 10 first, and then the desired external shape may be obtained by die punching, cutter punching, or laser cutting.

Due to the existence of the first air-permeable sealing-portion 81 and the second air-permeable sealing-portion 82, the storage capacity of the smoke in the cooling member 10 can be increased, whether assembly is in a reverse direction or in a forward direction does not need to be considered, the assembly difficulty is reduced, and the resistance to draw is controlled. In addition, the filter member 70 may be prevented from entering the cooling member 10 during subsequent assembling.

Reference can be made to FIG. 13 to FIG. 16 together, where FIG. 13 is a schematic structural view of a cartridge according to another implementation of the present disclosure, FIG. 14 is a partial schematic view of a cartridge according to another implementation of the present disclosure, FIG. 15 is a schematic structural view of a cartridge according to yet another implementation of the present disclosure, and FIG. 16 is an exploded view of a cartridge according to an implementation of the present disclosure. In this implementation, the cartridge 1 further includes a decorative member 90. The decorative member 90 is sleeved on the tube 40 and the closing member 50. The decorative member 90 has a first end-surface 91 and a second end-surface 92 opposite to each other. The first end-surface 91 is flush with a surface of the closing member 50 away from the tube 40. The second end-surface 92 is flush with a surface of the filter member 70 away from the closing member 50.

The cartridge 1 may further includes the decorative member 90. The decorative member 90 is sleeved on the tube 40 and the closing member 50. The decorative member 90 can protect both the tube 40 and the closing member 50. Various patterns, shapes, colors, and textures may be disposed on the decorative member 90 to improve the appearance effect of the cartridge 1. In this implementation, two ends of the decorative member 90 may be flush with the closing member 50 and the filter member 70 respectively, thereby improving the flatness of the cartridge 1.

Optionally, the material of the decorative member 90 includes, but is not limited to, food-grade tipping paper. Further optionally, the material of the decorative member 90 includes, but is not limited to, tipping paper of 32 g/m²-40 g/m².

Optionally, the decorative member 90 has a length of 42 mm-46 mm in an axial direction of the tube 40, and an outer diameter of 7.15 mm-7.3 mm in a radial direction of the tube 40.

Referring to FIG. 17, which is a schematic structural view of a cartridge according to yet another implementation of the present disclosure. In this implementation, the tube 40 has two avoidance mark regions 93 corresponding to the receiving space 71.

In this implementation, since the tube 40 has the two avoidance mark regions 93 corresponding to the receiving space 71, the user can be remined of the position of the receiving space 71, so that the functional member 30 is prevented from being exposed due to rupture of the tube 40 and the decorative member 90 that are corresponding to the receiving space 71 when the user draws. Specifically, patterns, colors, textures, or the like may be disposed at a corresponding mark region of the decorative member 90.

Reference can be made to FIG. 18, which is a schematic cross-sectional view of a cartridge in a radial direction according to an implementation of the present disclosure. In this implementation, the tube 40 further has two squeezing mark regions 94 opposite to each other. A connecting line of centers of the two squeezing mark regions 94 is perpendicular to an extending direction of the receiving space 71.

In this implementation, the two squeezing mark regions 94 may further be disposed to remind the user of the position to-be-squeezed, so that the user can squeeze the functional member 30 by hand to break the functional member 30 when drawing, thereby releasing the functional portion 32. In addition, the connecting line of the centers of the two squeezing mark regions 94 is perpendicular to the extending direction of the receiving space 71. That is, the squeezing mark region 94 is not in the extending direction of the receiving space 71, but is in a direction perpendicular to the extending direction of the receiving space 71. In this way, the filter member 70 can be squeezed, and the force can be better transmitted to the functional member 30 through the filter member 70. If the squeezing mark region 94 is in the extending direction of the receiving space 71, it is difficult for the functional member 30 to be broken since the squeezing force applied to the filter member 70 is difficultly transmitted to the functional member 30.

The contents provided by implementations of the present disclosure have been introduced in detail in the above, and principles and implementations of the present disclosure are illustrated and explained herein. Above explanations are only for facilitating understanding of the methods and core ideas of the present disclosure. At the same time, according to the ideas of the present disclosure, changes in specific implementations and an application scope can be made by those ordinary skilled in this art. To sum up, the contents of this specification may not be construed as limitation of the present disclosure.

	Number	Date	Country
Parent	PCT/CN2022/076932	Feb 2022	WO
Child	18763738		US

FILTER ASSEMBLY AND CARTRIDGE

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