CN113974211A - Cigarette suitable for electromagnetic heating - Google Patents

Abstract

The invention discloses a cigarette suitable for electromagnetic heating, which comprises a tobacco section and magnetic induction pieces, wherein the magnetic induction pieces are arranged in the tobacco section, and the distance between every two adjacent magnetic induction pieces is gradually increased along the direction from the air inlet end of the tobacco section to the air outlet end of the tobacco section; the magnetic induction piece is provided with a through type airflow hole, so that smoke separated out from the tobacco section can flow through the magnetic induction piece. According to the invention, the heating element and the tobacco shred are synchronously packaged, the heating element does not need to be inserted into the external part, the tobacco shred can be uniformly heated, the smoke is separated out, and the problem of tobacco shred adhesion can be effectively avoided.

Description

Cigarette suitable for electromagnetic heating

Technical Field

The invention belongs to the technical field of tobacco, and particularly relates to a cigarette applicable to electromagnetic heating.

Background

At present, an electromagnetic heating smoking set mainly uses central heating, a susceptor material is used as a heating element and is arranged in the center of the smoking set, usually, a sheet type or a needle type is used as a main part, the heating element is inserted into a cigarette for heating, susceptor particles are arranged in the cigarette for auxiliary heating, the heating mode is radial heating, the central heating element is used for induction heating to conduct heat to tobacco shreds, the length of the central heating element of the heating mode cannot completely accord with the length of the tobacco shreds, and the problems that the heating is not uniform, the tobacco shreds are adhered to the heating element and the like exist.

Disclosure of Invention

The invention aims to provide a cigarette applicable to electromagnetic heating, which is characterized in that a heating element and tobacco shreds are synchronously packaged, the heating element does not need to be inserted into the outside, the tobacco shreds can be uniformly heated, smoke is separated out, and the problem of tobacco shreds adhesion can be effectively avoided.

The technical scheme adopted for solving the technical problem is that the invention provides a cigarette applicable to electromagnetic heating, which comprises a tobacco section and magnetic induction pieces, wherein the magnetic induction pieces are arranged in the tobacco section, and the distance between every two adjacent magnetic induction pieces is gradually increased along the direction from the air inlet end of the tobacco section to the air outlet end of the tobacco section; the magnetic induction piece is provided with a through type airflow hole, so that smoke separated out from the tobacco section can flow through the magnetic induction piece.

The tobacco smoke filter at least comprises a tobacco section, a filter tip section and a filter tip section, wherein the filter tip section at least comprises a hollow section, a cooling section and a tow section, the front end of the hollow section is in butt joint with the air outlet end of the tobacco section, the rear end of the hollow section is in butt joint with the cooling section, and the tow section is arranged behind the cooling section; the tow section is a suction end of a cigarette.

The tobacco filter further comprises outer packaging paper, and the filter tip section and the tobacco section are covered by the outer packaging paper; the outer annular wall of the magnetic induction element is connected with the inner side of the outer packaging paper at the tobacco section.

Furthermore, the smoke generating body and the magnetic induction piece in the tobacco section are formed by coating through a heat insulation layer, and the outer ring wall of the magnetic induction piece is connected with the inner side of the heat insulation layer; the outer part of the heat insulation layer is wrapped with outer packaging paper.

Further, the hollow section comprises an outer ring body and a hollow cavity, and the outer ring body and the hollow cavity are coaxially arranged; the outer ring body is filled with a filter body.

Furthermore, a plurality of the magnetic induction pieces are arranged in the tobacco section in parallel, and the magnetic induction pieces are perpendicular to the overall flowing direction of the airflow in the tobacco section.

Further, the magnetic induction piece comprises a base ring and a heating body, and the heating body is arranged in the inner annular wall of the base ring; the base ring is made of non-magnetic induction materials, and the heating body is made of magnetic induction materials.

Furthermore, the heating body is of a screen structure, and the annular edge of the screen structure is fixedly connected with the base ring.

Furthermore, the heating body is a circular plate, a plurality of through holes are formed in the circular plate to serve as airflow holes, and the annular edge of the circular plate is fixedly connected with the base ring; the through hole can be in the shape of a round hole, an annular strip-shaped hole and the like.

Further, the heating structure of the magnetic induction piece is not in direct contact with the filter tip segment.

Further, the plurality of magnetic induction pieces divide the tobacco segment into at least two segments.

The invention has the beneficial effects that:

the invention provides a cigarette suitable for electromagnetic heating, a heating body is arranged in tobacco in a tobacco section according to a certain rule, when a smoking set applies a magnetic field to the cigarette, the heating body can generate heat to heat surrounding tobacco/smoke bodies, so that smoke is separated out; the distribution of heat-generating body can effectively heat the pipe tobacco in each region, and every cigarette props up independent utility, can avoid the pipe tobacco completely and the adhesion of the heating member of utensil.

The distribution of the heating elements is related to the filling density of substances in the tobacco section, and the distribution distance of the heating elements is gradually increased along the direction from the air inlet end to the air outlet end; that is, the distribution pitch of the heat generating bodies gradually increases in the flow direction of the air current.

The heating body can be arranged in the flowing direction of the airflow in the tobacco section in a transverse mode, and the heating body is provided with multiple airflow holes, so that the flowing influence on the airflow in the tobacco section is small.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

FIG. 1 is a diagram of a cigarette adapted for electromagnetic heating according to an embodiment of the present invention;

FIG. 2 is a front view of a magnetic sensor according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a magnetic sensor for an electromagnetically heated cigarette according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the distribution of magnetic sensing elements within a tobacco segment of an electromagnetically heated cigarette in accordance with an embodiment of the present invention.

In the figure: 1. a tobacco section; 2. a hollow section; 3. a cooling section; 4. a tow segment; 5. a magnetic induction member; 6. a base ring; 7. a heating element; 8. packaging paper; 9. a smoke generating body; 21. an outer ring body; 22. and a hollow cavity.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is to be understood that the drawings in the following description are merely exemplary of the invention and that other drawings and embodiments can be derived by those skilled in the art without undue burden. The designation of the design orientation merely indicates the relative positional relationship between the respective members, not the absolute positional relationship.

The embodiment of the invention provides a cigarette suitable for electromagnetic heating, and please refer to fig. 1, fig. 2, fig. 3 and fig. 4, which mainly comprises a tobacco section 1 and magnetic induction pieces 5, wherein the magnetic induction pieces 5 are arranged in the tobacco section 1, and the distance between every two adjacent magnetic induction pieces 5 is gradually increased along the direction from the air inlet end of the tobacco section 1 to the air outlet end of the tobacco section 1; the magnetic induction piece 5 is provided with a through type airflow hole, so that smoke separated out from the tobacco section 1 can flow through the magnetic induction piece 5.

It should be understood that the basic structure of the cigarette should also include a filter segment, and the filter segment and the tobacco segment 1 can be wrapped by the outer wrapper 8 to form the cigarette.

The filter tip section at least comprises a hollow section 2, a temperature reduction section 3 and a tow section 4, the front end of the hollow section 2 is in butt joint with the air outlet end of the tobacco section 1, the rear end of the hollow section 2 is in butt joint with the temperature reduction section 3, and the tow section 4 is arranged behind the temperature reduction section 3. Wherein the tow segment 4 is the suction end of the cigarette.

The hollow section 2 comprises an outer ring body 21 and a hollow cavity 22, and the outer ring body 21 and the hollow cavity 22 are coaxially arranged; the outer ring body 21 is filled with a filter. The filter body can be a tow rod made of acetate fiber. The material of the tow section 4 and the outer ring 21 may be the same.

It will be appreciated that the individual structures of the filter segment, after being butted, may be overmolded with additional overmold material to form a completed filter segment. The formed filter segment is butted with the tobacco segment 1, and then the wrapping paper 8 is coated and formed.

For the tobacco section 1, a heating structure is arranged inside the tobacco section 1, and in the embodiment of the invention, the heating structure can be contacted with the smoke generating body 9 and can also be contacted with the formed package of the tobacco section 1. When the heat-generating structure is in contact with the formed package, there is a risk of overheating and carbonization, and therefore, in the embodiment of the present invention, the heat-generating structure in the magnetic induction member 5 is structurally restricted so as not to be in direct contact with the cigarette structure other than the smoke-generating body 9.

Specifically, the magnetic induction piece 5 comprises a base ring 6 and a heating body 7, and the heating body 7 is installed in the inner annular wall of the base ring 6. Wherein, the base ring 6 is made of non-magnetic induction material, preferably material with heat insulation effect; the heating element 7 is made of magnetic induction material, such as iron, iron-nickel-zinc alloy, ferritic stainless steel, martensitic stainless steel, austenitic stainless steel.

When heating, the heating area of the heating body 7 is limited to the inner side of the base ring 6 and is not in direct contact with the easily carbonized structure of the cigarette. Specifically, the heating body 7 is not in direct contact with the filter tip section, the heating body 7 is not arranged on the rear end face of the tobacco section 1, and the hollow section 2 is directly butted with the smoke generating body 9 at the rear end of the tobacco section 1.

For the forming mode of the tobacco section 1, the tobacco section 1 can be formed independently and then is formed by butt joint with the filter tip section to form a cigarette; or may be formed with a shaped filter segment to form a cigarette.

When the tobacco sections 1 are formed independently: in the same way, the smoke generating body 9 and the magnetic induction piece 5 are formed into an integrated structure and then are butt-jointed with the filter tip section. Specifically, a heat insulation layer can be made of a heat insulation material, the smoke generating body 9 and the magnetic induction piece 5 are coated for the first time through the heat insulation layer, the tobacco section 1 is formed, then the tobacco section 1 and the filter tip section are coated and formed through the outer packaging paper 8, a cigarette is formed, and the outer packaging paper 8 is coated for the second time.

Based on the structural characteristics of the magnetic induction element 5, the outer ring wall of the magnetic induction element 5 is in direct contact with the inner side of the heat insulation layer, and can be set as a fixed connection device, so that the position of the magnetic induction element 5 is determined to be not changed any more. Specifically, the outer ring wall of the base ring 6 is fixedly connected with the inner side of the heat insulation layer, and the position of the base ring 6 in the tobacco section 1 is determined, so that the position of the heating body 7 can be synchronously determined.

When the tobacco sections 1 are not formed independently: the tobacco segment 1, the formed filter segment, may be coated directly with tipping paper 8. The tobacco section 1 mainly comprises a smoke body 9 and a magnetic induction piece 5, and after the smoke body 9 and the magnetic induction piece 5 are distributed, the smoke body 9, the magnetic induction piece 5 and the formed filter tip section can be coated by the outer packaging paper 8 to form a cigarette. In this case, the tobacco segment 1 has only one overlapping structure, and the complexity of the cigarette production process is low.

Based on the structural characteristics of the magnetic sensing element 5, the outer ring wall of the magnetic sensing element 5 is connected with the inner side of the outer paper 8 at the tobacco segment 1, that is, the outer ring wall of the base ring 6 is connected with the inner side of the outer paper 8, and can be fixed, so that the position of the magnetic sensing element 5 is determined, and no position change is generated. Meanwhile, when the heating element 7 generates heat, the base ring 6 is arranged between the heating element and the outer packaging paper 8, so that the outer packaging paper 8 is not heated and carbonized.

Referring to fig. 1, a plurality of magnetic sensors 5 are disposed in parallel inside the tobacco segment 1, the magnetic sensors 5 may be disposed perpendicular to the overall flow direction of the air flow in the tobacco segment 1, and the magnetic sensors 5 are disposed in the tobacco segment 1 in a transverse manner. The tobacco segment 1 can be divided into a plurality of segments by taking the magnetic induction piece 5 as a boundary. For practical reasons, the magnetic sensor 5 is not suitable for direct contact with the filter segment, and therefore the magnetic sensor 5 cannot be arranged on the end face of the tail end of the tobacco segment 1; the magnetic induction elements 5 may be located on the end face of the front end of the tobacco segment 1, and when a plurality of magnetic induction elements 5 are present in the tobacco segment 1, the tobacco segment 1 is divided into at least two segments. In the drawings of the invention, four magnetic induction elements 5 are involved, which can divide the tobacco segment 1 into five segments.

In the embodiment of the present invention, the basic structure of the heating element 7 may be circular, please refer to fig. 2 and fig. 3, and the embodiments of the heating element 7 have various types:

the heating body 7 is of a screen structure, and the annular edge of the screen structure is fixedly connected with the base ring 6. The mesh diameter on the mesh structure is the airflow hole. Specifically, the thickness of the silk screen is between 0.1mm and 3mm, and the mesh number of the silk screen is between 6 and 40 meshes.

The heating body 7 is a circular plate, a plurality of through holes are arranged on the circular plate to be used as airflow holes, and the annular edge of the circular plate is fixedly connected with the base ring 6. The through hole can be in the shape of a round hole, an annular strip-shaped hole and the like. Specifically, the thickness of the circular plate is between 0.1mm and 3mm, the diameter of the circular hole is between 0.3 mm and 3mm, and the gap of the annular strip-shaped hole is between 0.1mm and 1 mm. In terms of distribution, the circular holes can be uniformly distributed; the annular strip-shaped hole can be provided with multiple annular strip-shaped holes inside and outside around the central position.

It will be appreciated that the body 9 may be cut tobacco or other smoking material. When the smoke generating bodies 9 are filled, the density of the smoke generating bodies 9 in the tobacco stage 1 should be substantially the same at each location so that heat can be diffused to the surrounding smoke generating bodies 9 in a relatively uniform pattern when the heating elements 7 generate heat.

Based on the consideration of the actual suction conditions, the air flow enters from the air inlet end of the tobacco section 1 and flows out from the air outlet end of the tobacco section 1 during suction, the air flow can affect the heat radiation of the heating bodies 7 to a certain degree, and the heat radiation of each heating body 7 deviates to the flowing direction as a whole due to the fact that part of the heat is driven to be dissipated and transferred in the flowing direction during the air flow.

When the heat generating power of the heating bodies 7 is certain and the air flow is stable, the heat is laid to be in a stable state after passing through the space between the plurality of heating bodies 7 in consideration of the natural dissipation of the heat. However, in the embodiment of the invention, the length of the tobacco segment 1 is short and the suction airflow is intermittent, so that the heat radiation of the heating element 7 in the tobacco segment 1 is deflected backwards to some extent as long as suction occurs.

When the heat laying is carried out intermittently in the suction airflow, the tobacco area which is relatively close to the rear is contacted with the flowing high-temperature smoke, a certain preheating effect can be generated, and the heating body 7 is favorable for heating the tobacco area to separate out the smoke. Therefore, the pitch of the heating elements 7 disposed relatively rearward can be gradually increased.

Referring to fig. 4, a, b, c, d are all the magnetic sensors 5, and a1, b1, c1, d1 are the heat radiation areas of a, b, c, d, respectively; the appearance of heat radiation drift is: the heat radiation area a1 of a is divided into two parts by the board body of a, and the heat radiation area in front of the board body of a is smaller than that in the back. In the same way, the heat radiation area b1 of b is divided into two parts by the board body of b, and the heat radiation area in front of the board body of b is smaller than that in the back. The heat radiation area of c is shifted similarly to that of b. Finally, the rear smoke body 9 of d contacts with the hollow section, so that heat dissipation is accelerated.

Therefore, when the smoke generating body 9 is filled, the distance between the magnetic induction pieces 5 can be correspondingly set according to the deviation of the heat radiation area, and in the invention, the distance between two adjacent magnetic induction pieces 5 is gradually increased along the overall flowing direction of the airflow, so that under the condition that the heating efficiency of each magnetic induction piece 5 distributed in the tobacco section 1 is basically consistent, the smoke of the smoke generating body 9 with different quantities can be heated and separated out.

Specifically, k1 is the spacing between a and b, k2 is the spacing between b and c, k3 is the spacing between c and d, and k1> k2> k 3. The smoke body 9 in front of a contacts with the outside air firstly, and the heat dissipation is faster, so the filling amount of the smoke body 9 in front of a can be set relatively less, and the smoke body 9 in front of a can be completely heated when a generates heat; the filling of the body 9 behind d can be set relatively small, optimizing the heating effect of d.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the specific embodiments of the invention be limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. A cigarette applicable to electromagnetic heating is characterized by comprising a tobacco section (1) and magnetic induction pieces (5), wherein the magnetic induction pieces (5) are arranged in the tobacco section (1), and the distance between every two adjacent magnetic induction pieces (5) is gradually increased along the direction from the air inlet end of the tobacco section (1) to the air outlet end of the tobacco section (1); the magnetic induction piece (5) is provided with a through type airflow hole, so that smoke separated out from the tobacco section (1) can flow through the magnetic induction piece (5).

2. The cigarette applicable to electromagnetic heating according to claim 1, further comprising a filter section, wherein the filter section at least comprises a hollow section (2), a cooling section (3) and a tow section (4), the front end of the hollow section (2) is butted with the air outlet end of the tobacco section (1), the rear end of the hollow section (2) is butted with the cooling section (3), and the tow section (4) is arranged behind the cooling section (3); the tow section (4) is a suction end of a cigarette.

3. A rod suitable for electromagnetic heating according to claim 2, characterised in that it further comprises an outer wrapper (8), said filter segment and said tobacco segment (1) being wrapped by the outer wrapper (8); the outer annular wall of the magnetic induction piece (5) is connected with the inner side of the outer packaging paper (8) at the tobacco section (1).

4. A rod suitable for electromagnetic heating according to claim 2, characterised in that said hollow section (2) comprises an outer annular body (21), a hollow chamber (22), said outer annular body (21) and said hollow chamber (22) being arranged coaxially; the outer ring body (21) is filled with a filter body.

5. A tobacco rod suitable for electromagnetic heating according to claim 1, characterized in that a plurality of said magnetic induction pieces (5) are arranged in parallel inside the tobacco section (1), said magnetic induction pieces (5) being perpendicular to the overall flow direction of the air flow inside the tobacco section (1).

6. A cigarette adapted for electromagnetic heating according to claim 1, wherein said magnetic induction piece (5) comprises a base ring (6) and a heating element (7), said heating element (7) is installed in the inner ring wall of said base ring (6); the base ring (6) is made of non-magnetic induction materials, and the heating body (7) is made of magnetic induction materials.

7. A cigarette suitable for electromagnetic heating according to claim 6, characterized in that the heating element (7) is a wire mesh structure, and the annular edge of the wire mesh structure is fixedly connected with the base ring (6).

8. A cigarette suitable for electromagnetic heating according to claim 6, characterized in that the heating element (7) is a circular plate, a plurality of through holes are arranged on the circular plate as air flow holes, and the annular edge of the circular plate is fixedly connected with the base ring (6).

9. A tobacco rod suitable for electromagnetic heating according to claim 1, characterized in that the heating structure of the magnetic induction element (5) is not in direct contact with the filter tip segment; the tobacco section (1) is divided into at least two sections by the magnetic induction pieces (5).

10. The cigarette applicable to electromagnetic heating according to claim 1, characterized in that the smoke generating body (9) in the tobacco section (1) and the magnetic induction piece (5) are overmolded by a heat insulating layer, the outer annular wall of the magnetic induction piece (5) is connected with the inner side of the heat insulating layer; the outer part of the heat insulation layer is covered with outer packaging paper (8).

Images