Heated cigarette and cigarette heating system

Abstract

The application relates to a heated cigarette and a cigarette heating system. The heated cigarette comprises a cigarette body and a cigarette paper, the cigarette paper is wrapped around the cigarette body, the cigarette paper is provided with an electrically-conductive heating element, and an infrared radiation coating is arranged on the side of the cigarette paper close to the cigarette body. When the electrically-conductive heating element is powered and heated, the electrically-conductive heating element transmits heat to the infrared radiation coating, so that the infrared radiation coating radiates and heats the cigarette body. The heated cigarette provided by the application is provided with the infrared radiation coating on the cigarette paper, and the infrared radiation coating can be closely attached to the cigarette body without increasing the volume and structural complexity of the heated cigarette, thereby providing good heating effect for the tobacco.

Description

Technical Field

[0001] This application relates to the field of heated cigarette technology, and in particular to a cigarette heating system. Background Technology

[0002] New tobacco products heat tobacco with an external heat source instead of the traditional burning method, so they do not produce harmful substances such as tar, carbon monoxide, and heavy metals, which can greatly reduce the harm to the human body and the environment, and are highly sought after by new smokers and young consumers.

[0003] Based on product type, new tobacco products are mainly divided into electronic cigarettes, heated cigarettes, and smokeless tobacco products. Among them, heated cigarettes produce a genuine tobacco flavor without fire, ash, or strong odors, making them very popular with consumers.

[0004] For heated cigarettes, the smoke-generating section, or heating section, heats the processed tobacco (specially made tobacco cartridges) to a certain temperature without igniting the tobacco. This heats the tobacco to a level sufficient to release smoke, requiring high-temperature heating of approximately 350°C. Traditional heated cigarette heaters have a complex internal structure; the tobacco cartridges require special manufacturing, and the heater needs to be equipped with electrodes, control components, heat transfer tubes, and other elements. This hinders the miniaturization of the heater and increases the failure rate during use. Summary of the Invention

[0005] Therefore, it is necessary to provide a heated cigarette stick and cigarette heating system to address the problems of complex structure and inconvenience of use of traditional heated cigarettes.

[0006] On the one hand, this application provides a heated cigarette stick, characterized in that:

[0007] The heated cigarette includes a cigarette body and cigarette paper. The cigarette paper covers the cigarette body and is provided with a conductive heating element. Furthermore, an infrared radiation coating is provided on the side of the cigarette paper closest to the cigarette body. When the conductive heating element is energized and heats up, it transfers heat to the infrared radiation coating, thereby radiating heat to the cigarette body.

[0008] In one embodiment, there are multiple conductive heating elements connected in parallel, and the multiple conductive heating elements are spaced apart along the length direction of the cigarette body, and are all located on the side of the cigarette paper away from the cigarette body.

[0009] In one embodiment, a mouthpiece is provided at one end of the cigarette body, and the area of ​​the plurality of conductive heating elements gradually increases from the end of the cigarette body with the mouthpiece to the end away from the mouthpiece.

[0010] In one embodiment, the conductive heating element is wavy.

[0011] On the other hand, this application also provides a cigarette heating system, characterized in that: it includes a heater and a heated cigarette as described above, wherein the heater includes a cigarette holder, a conductive element and a power source, the cigarette holder has a slot, the slot extends through one end of the cigarette holder to form an opening at the end of the cigarette holder, the opening is used to guide the heated cigarette into the slot, the conductive element is electrically connected to the power source, and when the heated cigarette is inserted into the slot, the conductive heating element is electrically connected to the conductive element and energized.

[0012] In one embodiment, a plurality of the conductive heating elements are connected in series and spaced apart along the extension direction of the slot, and are all located on the side of the cigarette paper away from the cigarette body. The conductive elements include a plurality of conductive elements. When the heated cigarette is located in the slot, at least one of the conductive elements is electrically connected to the conductive heating element near the opening, and at least another conductive element is electrically connected to the conductive heating element away from the opening.

[0013] In one embodiment, the conductive element is connected to the cigarette holder, and at least a portion of the conductive element extends into the slot. Along the extension direction of the slot, the cigarette body is provided with a first groove, one end of which is connected to the end face of the cigarette body away from the opening. The cigarette paper is provided with a second groove, which corresponds to the first groove. When the heated cigarette is located in the slot, at least a portion of the conductive element is located in the second groove.

[0014] In one embodiment, the cigarette paper has a stepped portion and a grooved portion. The stepped portion is connected to the edge of the second groove near the opening, and the grooved portion is connected to the edge of the second groove in the extending direction. When a portion of the conductive element is located in the second groove, both the stepped portion and the grooved portion can contact the conductive element.

[0015] In one embodiment, a portion of the conductive heating element closest to the opening is located in the stepped portion, and another portion is located in the groove portion.

[0016] In one embodiment, the cigarette holder is provided with a reflective layer that surrounds the slot.

[0017] The aforementioned heated cigarette, by incorporating an infrared radiation coating and a conductive heating element into the cigarette paper, provides excellent radiative heating to the cigarette body without increasing its volume or structural complexity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a heated cigarette stick in one embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the side of the cigarette paper in a heated cigarette stick provided with a conductive heating element, according to one embodiment of this application.

[0020] Figure 3 This is a cross-sectional schematic diagram of a cigarette heating system in one embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of the cigarette holder in an embodiment of the cigarette heating system of this application.

[0022] Figure 5 for Figure 3 Enlarged diagram of point A in the middle.

[0023] Figure 6 This is a cross-sectional schematic diagram of a heated cigarette in a cigarette heating system according to an embodiment of this application.

[0024] Figure 7 This is a schematic diagram of the side of the cigarette paper in another embodiment of the cigarette heating system of this application, where a conductive heating element is provided.

[0025] Figure 8 This is a schematic diagram of the structure of the cigarette holder of the cigarette heating system in another embodiment of this application.

[0026] Explanation of icon numbers:

[0027] 100. Heated cigarette stick; 110. Cigarette stick body; 120. Cigarette paper; 120a. Second groove; 121. Conductive heating element; 122. Infrared radiation coating; 123. Stepped part; 124. Sliding groove; 200. Heater; 210. Cigarette holder; 211. Slot; 220. Conductive element; 221. First conductive part; 222. Second conductive part; 230. Reflective layer. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] See Figure 1 and Figure 2An embodiment of this application provides a heated cigarette stick 100, which includes a cigarette stick body 110 and a cigarette paper 120. The cigarette paper 120 covers the outer surface of the cigarette stick body 110. The cigarette paper 120 is provided with a conductive heating element 121, and an infrared radiation coating 122 is also provided on the side of the cigarette paper 120 near the cigarette stick body 110. When the conductive heating element 121 is energized and heats up, the conductive heating element 121 transfers heat to the infrared radiation coating 122, so that the infrared radiation coating 122 radiates and heats the cigarette stick body 110.

[0034] The heated cigarette stick 100 described in this application achieves close contact with the cigarette body 110 by applying an infrared radiation coating 122 to the cigarette paper 120. When the conductive heating element 121 is energized and heats up, the infrared radiation coating 122 can uniformly radiate heat to the cigarette body 110. Therefore, the heated cigarette stick 100 described in this application can provide a good and uniform heating effect to the cigarette body 110 without increasing the cigarette's volume or structural complexity.

[0035] In some embodiments, there are multiple conductive heating elements 121 connected in series, and the multiple conductive heating elements 121 are spaced apart along the extension direction of the slot 211, and are all located on the side of the cigarette paper 120 away from the cigarette body 110.

[0036] For example, refer to Figure 1 and Figure 2 The main component of the cigarette body 110 is tobacco shreds, which are compressed into an approximately cylindrical shape. Cigarette paper 120 covers the outer side of the cigarette body 110. An infrared radiation coating 122 is disposed on the side of the cigarette paper 120 closest to the cigarette body 110. Specifically, the infrared radiation coating can be applied directly to the side of the cigarette paper 120 closest to the cigarette body 110, or an infrared radiation sheet can be attached to the cigarette paper 120. Multiple conductive heating elements 121 are disposed on the side of the cigarette paper 120 opposite to the cigarette body 110. These conductive heating elements 121 are connected sequentially in parallel along the thickness direction of the cigarette paper 120. In this embodiment, there are five conductive heating elements 121. When all five conductive heating elements 121 are energized, they all generate heat and transfer it to the infrared radiation coating 122. This allows the infrared radiation coating 122 to radiate heat to various positions along the length of the cigarette body 110, heating the cigarette body 110 without igniting the tobacco, resulting in good smoke generation. Furthermore, the spaced arrangement of the conductive heating elements 121 appropriately reduces the infrared radiation intensity, thereby slowing down the smoke generation rate of the cigarette body 110, better matching people's smoking habits and preventing excessive smoke generation from affecting the smoking experience. The cigarette paper 120 can be a thin, thermally conductive insulating paper to facilitate heat transfer.

[0037] In some embodiments, a mouthpiece is provided at one end of the cigarette body 110, and the area of ​​the plurality of conductive heating elements 121 gradually increases from the end of the cigarette body 110 where the mouthpiece is provided to the end away from the mouthpiece.

[0038] For example, continue to refer to Figure 1 and Figure 2 A mouthpiece (not shown) is provided at one end of the cigarette body 110. Along the length of the cigarette body 110, the area of ​​the conductive heating element 121 increases with distance from the mouthpiece. For the five conductive heating elements 121 in this embodiment, a larger area corresponds to a greater infrared radiation intensity in the area of ​​the infrared radiation coating 122, resulting in a stronger heating effect on the cigarette body 110. When a user inhales through the mouthpiece, the airflow enters the cigarette body 110 from the end furthest from the mouthpiece, passes through the cigarette body 110, and is then drawn out from the mouthpiece. Since the cigarette body 110 has a certain length, there is some temperature loss in the airflow. Therefore, setting the conductive heating element 121 further from the mouthpiece to have a larger area can increase the temperature of the airflow at that end, providing a better heating effect on the tobacco in the cigarette body 110. At the end of the cigarette body 110 closest to the mouthpiece, where the airflow is about to enter the mouth, the temperature should not be too high. Therefore, by setting the conductive heating element 121 closer to the mouthpiece to have a smaller area, the temperature of the airflow reaching the mouthpiece is not too high, thus not affecting the smoking experience. Understandably, different types of tobacco require different levels of heating. A more ideal level of heating can be provided by using cigarette paper 120 with different numbers and areas of conductive heating elements 121, thereby improving the user's smoking experience.

[0039] In some embodiments, the conductive heating element 121 is wavy.

[0040] For example, continue to refer to Figure 2 All five conductive heating elements 121 are wavy. By setting all the conductive heating elements 121 to be wavy, the heating parts have a complementary concave-convex shape along the length of the cigarette body 110, which makes the infrared radiation coating layer more uniform in its infrared heat transfer effect on the cigarette body 110, thereby heating the tobacco more completely and reducing tobacco loss caused by incomplete heating.

[0041] This application also relates to a cigarette heating system, see reference Figure 3 and Figure 4The cigarette heating system includes the heated cigarette stick 100 and the heater 200 described above. The heater 200 includes a cigarette holder 210, a conductive element 220 and a power source (not shown). The cigarette holder 210 has a slot 211 that extends through one end of the cigarette holder 210 to form an opening at the end of the cigarette holder 210. The opening is used to guide the heated cigarette stick 100 into the slot 211. The conductive element 220 is electrically connected to the power source. When the heated cigarette stick 100 is inserted into the slot 211, the conductive heating element 121 is electrically connected to the conductive element 220 and is energized.

[0042] This cigarette heating system incorporates a conductive element 220 within the cigarette holder 210. When the heated cigarette 100 is inserted into the slot 211 through the opening, the conductive element 220 energizes the conductive heating element 121, causing it to heat up and allowing the infrared radiation coating 122 to radiate heat onto the cigarette body 110. Using this system, heating can be initiated at any time simply by placing the heated cigarette 100 into the heater 200, and heating can be stopped immediately by removing the heated cigarette 100 from the heater 200, saving the cigarette 100. This convenient and quick operation simplifies the overall structure of the cigarette heating system and enhances the user experience. Furthermore, when the heated cigarette 100 is inserted into the slot 211, the inner wall of the cigarette holder 210 corresponding to the slot 211 can compress the cigarette paper 120, causing the infrared radiation coating 122 to adhere tightly to the cigarette body 110, further enhancing the radiant heating effect on the cigarette body 110.

[0043] In some embodiments, the conductive element 220 is connected to the cigarette holder 210, and at least a portion of the conductive element 220 extends into the slot 211; along the extending direction of the slot 211, the cigarette body 110 is provided with a first groove, one end of the first groove is connected to the end face of the cigarette body 110 away from the port, and the cigarette paper 120 is provided with a second groove 120a, which corresponds to the first groove; when the heated cigarette 100 is located in the slot 211, at least a portion of the conductive element 220 is located in the second groove 120a.

[0044] For example, refer to Figure 4 The conductive component 220 includes a first conductive portion 221 and a second conductive portion 222. Both the first conductive portion 221 and the second conductive portion 222 are disposed on the inner sidewall of the cigarette holder 210 and are arranged opposite to each other. The first conductive portion 221 and the second conductive portion 222 are respectively connected to the positive and negative terminals of the power supply. In this embodiment, both the first conductive portion 221 and the second conductive portion 222 are block-shaped and protrude from the inner sidewall of the cigarette holder 210, extending into the slot 211.

[0045] refer to Figure 5 and Figure 6A first groove (not marked in the figure) is provided on the cylindrical surface of the cigarette body 110. This first groove is provided along the extension direction of the slot 211, that is... Figure 5 and Figure 6 In the vertical direction, the first groove can be formed by pressing the tobacco into a specific shape during the processing of the cigarette body 110. Understandably, after the cigarette paper 120 is rolled onto the outer surface of the cigarette body 110, in order to maintain the tightness between the cigarette paper 120 and the cigarette body 110, a depression will also be formed at the position of the cigarette paper 120 corresponding to the first groove; this depression is the second groove 120a. One end of the second groove 120a is connected to the end face of the cigarette paper 120 away from the opening. In this embodiment, two of each of the first and second grooves 120a are provided, and the two second grooves 120a correspond to the first conductive part 221 and the second conductive part 222, respectively.

[0046] By providing the second groove 120a, when the user inserts the heated cigarette stick 100 into the slot 211, the two second grooves 120a can be pre-aligned with the first conductive part 221 and the second conductive part 222 respectively, ensuring smooth insertion.

[0047] In some embodiments, the cigarette paper 120 is formed with a stepped portion 123 and a grooved portion 124. The stepped portion 123 is connected to the edge of the second groove 120a near the opening, and the grooved portion 124 is connected to the edge of the second groove 120a in the extending direction. When a portion of the conductive element 220 is located in the second groove 120a, both the stepped portion 123 and the grooved portion 124 can contact the conductive element 220.

[0048] For example, continue to refer to Figure 5 and Figure 6 The cigarette paper 120 has a stepped portion 123 and a grooved portion 124. Figure 3Taking the heated cigarette stick 100 as an example, one end of the groove portion 124 is located on the end face of the cigarette paper 120 away from the opening. The extending direction of the groove portion 124 is the same as the extending direction of the slot 211, both being vertical. The other end of the groove portion 124 is located on the side of the cigarette paper 120 near the opening, but does not reach the opening, and is connected to the step portion 123 at this end. The step portion 123 is a horizontal plane corresponding to the outer surface of the first conductive portion 221 or the second conductive portion 222 near the opening. Taking the first conductive part 221 and the corresponding second groove 120a as examples, when the user inserts the heated cigarette 100 into the slot 211, the sliding part 124 contacts the outer surface of the first conductive part 221 on the side perpendicular to the opening. As the heated cigarette 100 continues to be inserted from top to bottom, the step part 123 also contacts the outer surface of the first conductive part 221 on the side near the opening. At this time, the step part 123 will receive an upward supporting force provided by the conductive member 220. By setting the step part 123 and the sliding part 124, the user can clearly feel the feedback of the insertion when inserting the heated cigarette 100 into the slot 211, resulting in a better user experience. In addition, both the step part 123 and the sliding part 124 contact the conductive member 220, increasing the friction and reducing the probability of the heated cigarette 100 accidentally falling out of the slot 211 during use.

[0049] In some embodiments, the conductive heating element 121 closest to the opening is partially located in the stepped portion 123 and partially located in the groove portion 124.

[0050] For example, refer to Figure 2 , Figure 5 and Figure 6The conductive heating element 121 at the top of the cigarette paper 120 is the one closest to the opening. This conductive heating element 121 covers the end of the second groove 120a near the opening. A portion of the conductive heating element 121 is located on the periphery of the cigarette body 110 above the step 123 and on the step 123 itself. The remaining portion of the conductive heating element 121 is located on the periphery of the cigarette body 110 below the step 123 and covers a portion of the groove 124. Therefore, when the heated cigarette 100 is inserted into the slot 211, taking the first conductive part 221 as an example, the portion of the conductive heating element 121 located on the step 123 contacts the top surface of the first conductive part 221, and the portion of the conductive heating element 121 located in the groove 124 can contact the side of the first conductive part 221 perpendicular to the opening. By setting a portion of the conductive heating element 121 closest to the opening in the stepped portion 123 and another portion in the sliding groove portion 124, the conductive heating element 121 and the conductive element 220 are in more complete contact, and the heating of the conductive heating element 121 is more stable and continuous, thereby enabling the infrared radiation coating 122 to radiate heat more stably and further improve the smoking experience.

[0051] In some embodiments, the cigarette holder 210 is provided with a reflective layer 230 that surrounds the slot 211.

[0052] For example, refer to Figure 4 A reflective layer 230 is provided on the inner side of the cigarette holder 210, surrounding the slot 211 and forming the edge of the slot 211. When the heated cigarette stick 100 is placed in the heater 200, the infrared radiation coating 122 emits infrared radiation towards the cigarette stick body 110. After radiating and heating the tobacco inside the cigarette stick body 110, the infrared radiation passes through the cigarette stick body 110 and the cigarette paper 120 on the opposite side. By providing the reflective layer 230, the infrared radiation passes through the cigarette paper 120 and reaches the reflective layer 230, where it is reflected back towards the cigarette stick body 110. Under the reflection of the reflective layer 230, the infrared radiation repeatedly passes through the cigarette stick body 110, reducing the energy loss of the infrared radiation and thus improving the heating effect on the tobacco, allowing the tobacco to reach a fully heated but not burned state, resulting in a better smoking experience.

[0053] In some embodiments, the reflective layer 230 is a metal foil or a metal-plated thin film.

[0054] For example, the reflective layer 230 can be a metal foil, and the metal material of the foil can be any one of gold, silver, aluminum, etc., or it can be a combination of gold, silver and aluminum in any proportion. The reflective layer 230 can also be a polyester or polyimide film coated with the above-mentioned metals.

[0055] In some other embodiments, a plurality of conductive heating elements 121 are connected in series and are spaced apart along the extension direction of the slot 211, and are all located on the side of the cigarette paper 120 away from the cigarette body 110. The conductive elements 220 include a plurality of conductive elements. When the heated cigarette 100 is located in the slot 211, at least one conductive element 220 is electrically connected to the conductive heating element 121 near the opening, and at least another conductive element 220 is electrically connected to the conductive heating element 121 away from the opening.

[0056] For example, refer to Figure 7 and Figure 8 The conductive heating elements 121 of the cigarette heating system involved in this application can also be connected in series. As shown in the figure, on the inner side of the cigarette paper 120 in the thickness direction, five conductive heating elements 121 are connected end to end, so that the five conductive heating elements 121 form a series connection. Unlike the above embodiment, in this embodiment, the first conductive part 221 is higher than the second conductive part 222. When the heated cigarette stick 100 is inserted into the slot 211, the first conductive part 221 is electrically connected to the conductive heating element 121 located at the top of the cigarette paper 120, and the second conductive part 222 is electrically connected to the conductive heating element 121 located at the bottom of the cigarette paper 120, so that current can flow through the five conductive heating elements 121, so that all five conductive heating elements 121 can heat up.

[0057] In some embodiments, the conductive heating element may be a PI heating film, a PET heating film, or a graphene heating film, or a carbon nanotube heating film, etc.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cigarette heating system, characterized in that, The device includes a heater and a heated cigarette stick. The heated cigarette stick includes a cigarette stick body and a cigarette paper. The cigarette paper covers the cigarette stick body and is provided with a conductive heating element. Furthermore, the side of the cigarette paper closest to the cigarette stick body is provided with an infrared radiation coating. When the conductive heating element is energized and heats up, it transfers heat to the infrared radiation coating, causing the infrared radiation coating to radiate heat onto the cigarette stick body. The heater includes a cigarette holder, a control component, a conductive component, and a power source. The cigarette holder has a slot that extends through one end of the cigarette holder to form an opening at the end of the cigarette holder. The opening is used to guide the heated cigarette into the slot. The conductive component is electrically connected to the power source. When the heated cigarette is inserted into the slot, the conductive heating component is electrically connected to the conductive component and is energized. The conductive element is connected to the cigarette holder, and at least a portion of the conductive element extends into the slot. Along the extension direction of the slot, the cigarette body is provided with a first groove, one end of which is connected to the end face of the cigarette body away from the opening. The cigarette paper is provided with a second groove, which corresponds to the first groove. When the heated cigarette is located in the slot, at least a portion of the conductive element is located in the second groove. The cigarette paper has a stepped portion and a grooved portion. The stepped portion is connected to the edge of the second groove near the opening. The grooved portion is connected to the edge of the second groove in the extending direction. When a part of the conductive element is located in the second groove, both the stepped portion and the grooved portion can contact the conductive element.

2. The cigarette heating system according to claim 1, characterized in that, The number of conductive heating elements is multiple, and the multiple conductive heating elements are connected in parallel. The multiple conductive heating elements are spaced apart along the length direction of the cigarette body, and are all located on the side of the cigarette paper away from the cigarette body.

3. The cigarette heating system according to claim 2, characterized in that, One end of the cigarette body is provided with a mouthpiece, and the area of ​​the plurality of conductive heating elements gradually increases from the end of the cigarette body with the mouthpiece to the end away from the mouthpiece.

4. The cigarette heating system according to claim 2 or 3, characterized in that, The conductive heating element is wavy.

5. The cigarette heating system according to claim 1, characterized in that, Multiple conductive heating elements are connected in series and spaced apart along the extension direction of the slot, and are all located on the side of the cigarette paper away from the cigarette body. The conductive elements include multiple elements. When the heated cigarette is located in the slot, at least one conductive element is electrically connected to the conductive heating element near the opening, and at least another conductive element is electrically connected to the conductive heating element away from the opening.

6. The cigarette heating system according to claim 1, characterized in that, The portion of the conductive heating element closest to the opening is located in the stepped portion, and another portion is located in the groove portion.

7. The cigarette heating system according to claim 5 or 6, characterized in that, The cigarette holder is provided with a reflective layer that surrounds the slot.

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