Radial gradient heating smoking set for heating cigarettes

Abstract

The invention belongs to the technical field of heating smoking sets, and particularly relates to a radial gradient heating smoking set for heating cigarettes. The heat resistance mechanism is located on the heat conduction pipe, and the heat resistance mechanism divides the heat conduction pipe into a heating area and an auxiliary heat area; the heating mechanism is fixedly installed on the heating area of the heat conduction pipe and used for heating the heating area of the heat conduction pipe; the heat resisting mechanism is used for prolonging the time for transferring heat of the heating area to the auxiliary heating area; when the heat conduction pipe is in the vertical state, the length of an arc line, attached to the side wall of the cigarette, of the heating area on the same horizontal plane is smaller than two thirds of the perimeter of the heat conduction pipe. The heating smoking set aims at solving the problem that due to the structural defects of an existing heating smoking set, the temperature of first smoke sucked out is high, and the customer experience is poor.

Description

Technical Field

[0001] This invention belongs to the field of heated tobacco products technology, and specifically relates to a radial gradient heated tobacco product for heating cigarettes. Background Technology

[0002] Traditional cigarettes require an open flame to burn and produce tobacco smoke. During the high-temperature and pyrolysis process, tobacco releases thousands of harmful substances, consisting of volatiles in the gas and semi-volatiles and non-volatiles in the particles, such as carbon monoxide, phenols, aldehydes, nicotine, and tar. Heated tobacco products can effectively reduce the production of harmful substances and are healthier.

[0003] Currently, most heated tobacco products on the market use heating needles inserted along the cigarette's axis for center heating, or heating wires surrounding the cigarette for heating, or a combination of both. While these designs ensure uniform heating and a good amount of smoke on the first puff, existing surround-type heaters, with heating wires covering the entire length from top to bottom, result in a high temperature on the first puff when heating cigarettes, leading to a poor customer experience. Summary of the Invention

[0004] The purpose of this invention is to provide a radial gradient heating device for heating cigarettes, in order to solve the problem that the first puff of smoke drawn from existing heating devices is too hot due to structural defects, resulting in a poor customer experience.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A radial gradient heating device for heating cigarettes, comprising:

[0007] Heat-conducting pipes for inserting cigarettes;

[0008] A heat-blocking mechanism is located on the heat-conducting pipe, and the heat-blocking mechanism divides the heat-conducting pipe into a heating zone and an auxiliary heating zone;

[0009] A heating mechanism is fixedly installed on the heating zone of the heat-conducting pipe and is used to heat the heating zone of the heat-conducting pipe.

[0010] The heat-insulating mechanism is used to extend the time it takes for heat from the heating zone to be transferred to the auxiliary heating zone.

[0011] When the heat pipe is in a vertical position, the arc length of the heating zone that fits against the cigarette sidewall at the same horizontal level is less than two-thirds of the circumference of the heat pipe.

[0012] Furthermore, the heating mechanism is an arc-shaped heating element.

[0013] This structural design uses an arc-shaped heating element as the heating mechanism to heat the heat pipe. It is simple in structure, easy to assemble, and highly practical.

[0014] Furthermore, the central axis of the arc-shaped heating element coincides with the central axis of the heat pipe.

[0015] This structural design uses an arc-shaped heating element that coincides with the central axis of the heat pipe to heat the heat pipe. It is simple in structure, easy to manufacture, and highly practical.

[0016] Furthermore, the heating zone is multiple;

[0017] The multiple heating zones are located at different heights of the heat pipe and are arranged in an alternating manner;

[0018] Each of the heating zones is provided with an arc-shaped heating element, and multiple arc-shaped heating elements heat up sequentially.

[0019] This structural design, through multiple heating zones located at different heights and staggered on the heat-conducting pipe 2, and each heating zone equipped with an independently operating arc-shaped heating element, allows for sequential heating of the heat-conducting pipe 2 at different heights and directions. This heating of different parts of the cigarette at different times enables rapid heating of the cigarette during the first few puffs, ensuring sufficient smoke release and reducing the preheating time of the smoking device. Simultaneously, it avoids the problem of excessively high smoke temperature due to rapid moisture loss in the early stages, which could lead to insufficient moisture in the smoke later in the smoking process, affecting the smoking experience. This design is highly practical.

[0020] Furthermore, the heat-insulating mechanism includes an axial heat-insulating component, which is used to extend the time it takes for heat from the heating zone to be transferred to the auxiliary heating zone along the axial direction of the heat pipe.

[0021] This structural design, through axial heat-insulating components, distinguishes the heating zone and auxiliary heating zone in the vertical direction. Furthermore, with multiple arc-shaped heating elements located at different heights of the heat pipe and arranged in a staggered manner, it can prevent heat from being directly transferred axially through the heat pipe to the auxiliary heating zone corresponding to another arc-shaped heating element when one arc-shaped heating element is heating the heating zone of the heat pipe. This design is highly practical.

[0022] Furthermore, the heat-insulating mechanism includes a circumferential heat-insulating component, which is used to extend the time it takes for heat from the heating zone to be transferred to the auxiliary heating zone along the circumference of the heat-conducting pipe.

[0023] This structural design, through circumferential heat-insulating components, distinguishes the heating zone and auxiliary heating zone in the horizontal direction. Furthermore, when the central axis of the arc-shaped heating element coincides with the central axis of the heat pipe, it prevents heat from being directly transferred radially to the auxiliary heating zone through the heat pipe when the arc-shaped heating element heats the heating zone of the heat pipe, making it highly practical.

[0024] Furthermore, the heating mechanism is spiral-shaped;

[0025] The heat-insulating mechanism consists of two sets and is spiral-shaped;

[0026] The two sets of heat-resistant mechanisms are located on the upper and lower sides of the heating mechanism, respectively.

[0027] This structural design, by twisting the heating mechanism into a spiral shape and then using two sets of spiral heat-insulating mechanisms located on the upper and lower sides of the spiral heating mechanism, distinguishes the heating zone and auxiliary heating zone on the heat pipe, thereby extending the heat transfer time and making it highly practical.

[0028] Further specifying, the heat-insulating mechanism includes an end heat-insulating component located at the end of the heat-conducting pipe, which is used to extend the time it takes for heat from the heating zone to be transferred from the end of the heat-conducting pipe to the auxiliary heating zone along the circumference of the heat-conducting pipe.

[0029] This structural design, through the end heat-insulating component set at the end of the heat pipe, extends the time for heat from the heating zone to be transferred from the end of the heat pipe to the auxiliary heating zone along the circumference of the heat pipe, making it highly practical.

[0030] Furthermore, the heat-insulating mechanism is a slot formed on the heat-conducting pipe.

[0031] This structural design uses slots to form a heat-insulating mechanism, thereby creating heating and auxiliary heating zones on the heat pipe. It has a simple structure, is easy to process, and is highly practical.

[0032] Further specifying, the auxiliary heating zone is equipped with an auxiliary heating mechanism, which is used to heat the auxiliary heating zone in the later stage of suction.

[0033] This structural design, by setting up an auxiliary heating mechanism on the auxiliary heating zone, allows the auxiliary heating mechanism to directly heat the auxiliary heating zone when a higher temperature is required in the later stages of smoking. This rapidly increases the temperature of the auxiliary heating zone, thereby quickly heating the cigarette area corresponding to the auxiliary heating zone. As a result, the entire cigarette can be heated to a sufficient temperature, achieving full utilization of the cigarette.

[0034] Further specified, the heating zone comprises two zones;

[0035] The two heating zones are located at different heights of the heat pipe and are staggered.

[0036] Each of the heating zones is equipped with a heating mechanism;

[0037] The two heating mechanisms generate heat according to a preset first temperature line and a preset second temperature line, respectively;

[0038] The temperature value of the first temperature line gradually decreases over time, while the temperature value of the second temperature line gradually increases over time.

[0039] The initial temperature of the first temperature line is higher than the initial temperature of the second temperature line, and the final temperature of the first temperature line is lower than the final temperature of the second temperature line.

[0040] This structural design, through two staggered heating zones located at different heights of the heat pipe, each with an independently operating heating mechanism, heats the heat pipe at different temperatures at different heights and locations. This allows for rapid heating of the cigarette during the first few puffs, ensuring sufficient smoke release and reducing preheating time. Simultaneously, it prevents excessively high smoke temperatures caused by rapid moisture loss in the early stages, which could lead to insufficient moisture and poor taste later in the smoking process. Ultimately, this ensures a relatively balanced smoke temperature, moisture content, and overall composition throughout the smoking process, improving smoke stability and making it highly practical.

[0041] The invention employing the above technical solution has the following advantages:

[0042] 1. The heat-conducting pipe is divided into a heating zone and an auxiliary heating zone by a heat-insulating mechanism. The heating zone is heated by the heating mechanism. The relatively high temperature of the heated zone is then used to heat the cigarette on one side. During this process, the heat from the heating zone is delayed and transferred to the auxiliary heating zone by the heat-insulating mechanism, resulting in a relatively low temperature in the auxiliary heating zone. This creates a gradient heating of the cigarette in the early stages of smoking, so that the first puff contains smoke that is heated to a higher temperature by the heated zone and smoke that is heated to a lower temperature by the auxiliary heating zone. The mixing of these two gases reduces the overall temperature of the first puff.

[0043] 2. By heating the cigarette on one side of the cigarette, the heat transfer path is longer, resulting in a larger temperature gradient along the diameter of the cigarette. This allows the atomizing matrix to release a wider variety of smokes, making it more practical. At the same time, the larger temperature gradient along the diameter of the cigarette can reduce the rate of moisture release while maintaining the nicotine content in the smoke. This keeps the moisture content in the smoke relatively stable throughout the smoking process, resulting in a better smoking experience.

[0044] 3. By delaying the heat transfer through the heat-insulating mechanism, the temperature of the auxiliary heating zone is raised to a level close to that of the heating zone in the later stages of smoking, thereby heating the entire cigarette at a sufficient temperature and making full use of the cigarette, which is highly practical.

[0045] 4. By setting up an auxiliary heating mechanism on the auxiliary heating zone, when a higher temperature is required in the later stages of smoking, the auxiliary heating mechanism directly heats the auxiliary heating zone, thereby rapidly increasing the temperature of the auxiliary heating zone and rapidly heating the cigarette area corresponding to the auxiliary heating zone. This allows for sufficient heating of the entire cigarette, achieving full utilization of the cigarette.

[0046] 5. By using two staggered heating zones located at different heights of the heat pipe, each with an independently operating heating mechanism, the heat pipe is heated at different temperatures at different heights and locations. This allows for rapid heating of the cigarette during the first few puffs, ensuring sufficient smoke release and reducing the preheating time of the smoking device. It also prevents excessively high smoke temperatures caused by rapid moisture loss in the early stages, which could lead to insufficient moisture in the smoke later in the smoking process, affecting the taste. Therefore, it ensures a relatively balanced smoke temperature, moisture content, and overall substance content throughout the smoking process, improving smoke stability and making it highly practical. Attached Figure Description

[0047] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0048] Figure 1 This is a schematic diagram of a first embodiment of a radial gradient heating device for heating cigarettes according to the present invention;

[0049] Figure 2 This is a schematic diagram of a second embodiment of a radial gradient heating device for heating cigarettes according to the present invention;

[0050] Figure 3 This is a schematic diagram of the structure of a radial gradient heating device for heating cigarettes according to a third embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram of the structure of a fourth embodiment of a radial gradient heating device for heating cigarettes according to the present invention;

[0052] Figure 5 This is a schematic diagram of the temperature line structure of the heating mechanism in Embodiment 5 of the present invention for a radial gradient heating device for heating cigarettes;

[0053] The symbols for the main components are explained below:

[0054] Cigarettes 1

[0055] Heat pipe 2, auxiliary heating zone 20, circumferential heat-insulating component 21, axial heat-insulating component 22, end heat-insulating component 23

[0056] Heating mechanism 3, auxiliary heating mechanism 30. Detailed Implementation

[0057] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0058] Example 1:

[0059] like Figure 1 As shown, a radial gradient heating device for heating cigarettes according to the present invention includes:

[0060] Heat-conducting pipe 2 for inserting cigarette 1;

[0061] The heat-insulating mechanism is located on the heat-conducting pipe 2 and divides the heat-conducting pipe 2 into a heating zone and an auxiliary heating zone 20.

[0062] Heating mechanism 3 is fixedly installed on the heating area of ​​heat pipe 2 and is used to heat the heating area of ​​heat pipe 2.

[0063] The heat-insulating mechanism is used to extend the time for heat to be transferred from the heating zone to the auxiliary heating zone 20;

[0064] When the heat pipe 2 is in a vertical position, the arc length of the heating zone that adheres to the side wall of the cigarette 1 at the same horizontal level is less than two-thirds of the circumference of the heat pipe 2.

[0065] Heating mechanism 3 is an arc-shaped heating element.

[0066] The heat pipe 2 is heated by using an arc-shaped heating element as the heating mechanism 3. The structure is simple, easy to assemble, and highly practical.

[0067] The central axis of the arc-shaped heating element coincides with the central axis of the heat pipe 2.

[0068] The heat pipe 2 is heated by an arc-shaped heating element that coincides with the central axis of the heat pipe 2. The structure is simple, easy to manufacture, and highly practical.

[0069] The heat-insulating mechanism includes a circumferential heat-insulating component 21, which is used to extend the time for heat from the heating zone to be transferred to the auxiliary heating zone 20 along the circumference of the heat pipe 2.

[0070] The circumferential heat-insulating component 21 distinguishes the heating zone and the auxiliary heating zone 20 in the horizontal direction. This prevents heat from being directly transferred radially to the auxiliary heating zone 20 when the arc-shaped heating element heats the heating zone of the heat pipe 2, thus improving its practicality.

[0071] The heat-insulating mechanism includes an end heat-insulating component 23, which is located at the end of the heat-conducting pipe 2 and is used to extend the time for heat from the heating zone to be transferred from the end of the heat-conducting pipe 2 to the auxiliary heating zone 20 along the circumference of the heat-conducting pipe 2.

[0072] By using the end heat-insulating component 23 at the end of the heat pipe 2, the time it takes for the heat from the heating zone to be transferred from the end of the heat pipe 2 to the auxiliary heating zone 20 along the circumference of the heat pipe 2 is extended, which is highly practical.

[0073] The heat-insulating mechanism is a slot formed on the heat-conducting pipe 2.

[0074] In practice, depending on the actual situation, one can also choose to directly cut the heat pipe 2 and then use a material that is resistant to high temperature and has low thermal conductivity to complete the combination of the heating zone and the auxiliary heating zone 20. In this embodiment, a heat-insulating mechanism is formed by slots, thereby forming the heating zone and the auxiliary heating zone 20 on the heat pipe 2. The structure is simple, easy to process, and highly practical.

[0075] In this embodiment, when in use, the cigarette 1 is inserted into the heat-conducting pipe 2, so that the side wall of the cigarette 1 is in close contact with the inner wall of the heat-conducting pipe 2. Then, the heating mechanism 3, which is composed of arc-shaped heating plates, heats the heating area of ​​the heat-conducting pipe 2. In turn, the heating area of ​​the heat-conducting pipe 2 heats the side of the cigarette 1 near the heating area, so that the cigarette 1 emits smoke.

[0076] During this process, the heat of the heating zone is blocked by the circumferential heat-insulating component 21 formed by the vertical slots, so that the temperature of the auxiliary heating zone 20 is much lower than that of the heating zone in the early stage of smoking. As a result, the temperature of the side of the cigarette 1 near the auxiliary heating zone 20 is much lower than that of the other side, thus forming a gradient heating of the cigarette in the early stage of smoking. As a result, the first puff of smoke contains smoke with a higher temperature after being heated by the heating zone and smoke with a lower temperature after being heated by the auxiliary heating zone 20. The mixing of the two gases reduces the overall temperature of the first puff of smoke.

[0077] As the smoking time increases, even with the delayed heat transfer caused by the circumferential heat-insulating component 21, the temperature of the auxiliary heating zone 20 can be raised to a level close to that of the heating zone in the later stages of smoking. This allows for sufficient heating of the entire cigarette, thus making full use of the cigarette 1.

[0078] Example 2:

[0079] like Figure 2 As shown, a radial gradient heating device for heating cigarettes according to the present invention includes:

[0080] Heat-conducting pipe 2 for inserting cigarette 1;

[0081] The heat-insulating mechanism is located on the heat-conducting pipe 2 and divides the heat-conducting pipe 2 into a heating zone and an auxiliary heating zone 20.

[0082] Heating mechanism 3 is fixedly installed on the heating area of ​​heat pipe 2 and is used to heat the heating area of ​​heat pipe 2.

[0083] The heat-insulating mechanism is used to extend the time for heat to be transferred from the heating zone to the auxiliary heating zone 20;

[0084] When the heat pipe 2 is in a vertical position, the arc length of the heating zone that adheres to the side wall of the cigarette 1 at the same horizontal level is less than two-thirds of the circumference of the heat pipe 2.

[0085] Heating mechanism 3 is an arc-shaped heating element.

[0086] The heat pipe 2 is heated by using an arc-shaped heating element as the heating mechanism 3. The structure is simple, easy to assemble, and highly practical.

[0087] The central axis of the arc-shaped heating element coincides with the central axis of the heat pipe 2.

[0088] The heat pipe 2 is heated by an arc-shaped heating element that coincides with the central axis of the heat pipe 2. The structure is simple, easy to manufacture, and highly practical.

[0089] There are multiple heating zones;

[0090] Multiple heating zones are located at different heights on the heat pipe 2 and are staggered.

[0091] Each heating zone is equipped with an arc-shaped heating element, and multiple arc-shaped heating elements heat up sequentially. In this embodiment, two arc-shaped heating elements are preferred; however, a single arc-shaped heating element can also be used depending on the actual situation. This embodiment uses multiple heating zones located at different heights of the heat-conducting pipe 2 and arranged in an alternating manner, with independently operating arc-shaped heating elements on each zone. This allows for sequential heating of the heat-conducting pipe 2 at different heights and orientations, heating different parts of the cigarette at different times. This enables rapid heating of the cigarette during the first few puffs, ensuring sufficient smoke release and reducing the preheating time of the smoking device. Simultaneously, it avoids the problem of excessively high smoke temperature due to rapid moisture loss in the early stages of smoking, which could lead to insufficient moisture in the smoke later on, affecting the smoking experience. This design is highly practical.

[0092] The heat-insulating mechanism includes an axial heat-insulating component 22, which is used to extend the time for heat from the heating zone to be transferred to the auxiliary heating zone 20 along the axial direction of the heat pipe 2.

[0093] The axial heat-insulating component 22 creates a distinction between the heating zone and the auxiliary heating zone 20 in the vertical direction. This prevents heat from being directly transferred axially to the auxiliary heating zone 20 of another arc-shaped heating element when one arc-shaped heating element is heating the heating zone of the heat pipe 2. This makes the system highly practical.

[0094] The heat-insulating mechanism includes a circumferential heat-insulating component 21, which is used to extend the time for heat from the heating zone to be transferred to the auxiliary heating zone 20 along the circumference of the heat pipe 2.

[0095] The circumferential heat-insulating component 21 distinguishes the heating zone and the auxiliary heating zone 20 in the horizontal direction. This prevents heat from being directly transferred radially to the auxiliary heating zone 20 when the arc-shaped heating element heats the heating zone of the heat pipe 2, thus improving its practicality.

[0096] The heat-insulating mechanism includes an end heat-insulating component 23, which is located at the end of the heat-conducting pipe 2 and is used to extend the time for heat from the heating zone to be transferred from the end of the heat-conducting pipe 2 to the auxiliary heating zone 20 along the circumference of the heat-conducting pipe 2.

[0097] By using the end heat-insulating component 23 at the end of the heat pipe 2, the time it takes for the heat from the heating zone to be transferred from the end of the heat pipe 2 to the auxiliary heating zone 20 along the circumference of the heat pipe 2 is extended, which is highly practical.

[0098] The heat-insulating mechanism is a slot formed on the heat-conducting pipe 2.

[0099] In practice, depending on the actual situation, one can also choose to directly cut the heat pipe 2 and then use a material that is resistant to high temperature and has low thermal conductivity to complete the combination of the heating zone and the auxiliary heating zone 20. In this embodiment, a heat-insulating mechanism is formed by slots, thereby forming the heating zone and the auxiliary heating zone 20 on the heat pipe 2. The structure is simple, easy to process, and highly practical.

[0100] In this embodiment, when in use, the cigarette 1 is inserted into the heat-conducting pipe 2, so that the side wall of the cigarette 1 is in close contact with the inner wall of the heat-conducting pipe 2. Then, the heating mechanism 3, which is composed of arc-shaped heating plates, heats the heating area of ​​the heat-conducting pipe 2. In turn, the heating area of ​​the heat-conducting pipe 2 heats the side of the cigarette 1 near the heating area, so that the cigarette 1 emits smoke.

[0101] During this process, the circumferential heat-insulating component 21 formed by the vertical slots hinders the circumferential transfer of heat in the heating zone, that is, it hinders the lateral transfer of heat in the horizontal direction.

[0102] Meanwhile, the axial heat-insulating component 22, which is composed of transverse slots, hinders the axial transfer of heat from the heating zone, that is, it hinders the vertical transfer of heat in the vertical direction.

[0103] As a result, the temperature of the auxiliary heating zone 20 is much lower than that of the heating zone in the early stage of smoking, which in turn makes the temperature of the side of the cigarette 1 near the auxiliary heating zone 20 much lower than that of the other side, thus forming a gradient heating of the cigarette in the early stage of smoking. As a result, the first puff of smoke contains smoke that is heated to a higher temperature by the heating zone and smoke that is heated to a lower temperature by the auxiliary heating zone 20, corresponding to the auxiliary heating zone 20. The mixing of the two gases reduces the overall temperature of the first puff of smoke.

[0104] As the smoking time increases, even with the delayed heat transfer caused by the circumferential heat-insulating component 21, the temperature of the auxiliary heating zone 20 can be raised to a level close to that of the heating zone in the later stages of smoking. This allows for sufficient heating of the entire cigarette, thus making full use of the cigarette 1.

[0105] Example 3:

[0106] like Figure 3 As shown, a radial gradient heating device for heating cigarettes according to the present invention includes:

[0107] Heat-conducting pipe 2 for inserting cigarette 1;

[0108] The heat-insulating mechanism is located on the heat-conducting pipe 2 and divides the heat-conducting pipe 2 into a heating zone and an auxiliary heating zone 20.

[0109] Heating mechanism 3 is fixedly installed on the heating area of ​​heat pipe 2 and is used to heat the heating area of ​​heat pipe 2.

[0110] The heat-insulating mechanism is used to extend the time for heat to be transferred from the heating zone to the auxiliary heating zone 20;

[0111] When the heat pipe 2 is in a vertical position, the arc length of the heating zone that adheres to the side wall of the cigarette 1 at the same horizontal level is less than two-thirds of the circumference of the heat pipe 2.

[0112] Heating mechanism 3 is spiral-shaped;

[0113] The heat-insulating mechanism consists of two sets, which are spiral in shape;

[0114] The two sets of heat-insulating mechanisms are located on the upper and lower sides of the heating mechanism 3, respectively.

[0115] By twisting the heating mechanism 3 into a spiral shape, and then passing through two sets of spiral heat-insulating mechanisms located on the upper and lower sides of the spiral heating mechanism 3, the heating area and auxiliary heating area 20 on the heat pipe 2 are distinguished, thereby extending the heat transfer time and making it highly practical.

[0116] The heat-insulating mechanism includes an end heat-insulating component 23, which is located at the end of the heat-conducting pipe 2 and is used to extend the time for heat from the heating zone to be transferred from the end of the heat-conducting pipe 2 to the auxiliary heating zone 20 along the circumference of the heat-conducting pipe 2.

[0117] By using the end heat-insulating component 23 at the end of the heat pipe 2, the time it takes for the heat from the heating zone to be transferred from the end of the heat pipe 2 to the auxiliary heating zone 20 along the circumference of the heat pipe 2 is extended, which is highly practical.

[0118] The heat-insulating mechanism is a slot formed on the heat-conducting pipe 2.

[0119] In practice, depending on the actual situation, one can also choose to directly cut the heat pipe 2 and then use a material that is resistant to high temperature and has low thermal conductivity to complete the combination of the heating zone and the auxiliary heating zone 20. In this embodiment, a heat-insulating mechanism is formed by slots, thereby forming the heating zone and the auxiliary heating zone 20 on the heat pipe 2. The structure is simple, easy to process, and highly practical.

[0120] In this embodiment, when in use, the cigarette 1 is inserted into the heat-conducting pipe 2, so that the side wall of the cigarette 1 is in close contact with the inner wall of the heat-conducting pipe 2. Then, the heating area of ​​the heat-conducting pipe 2 is heated by the spiral heating mechanism 3, and the heating area of ​​the heat-conducting pipe 2 is used to heat the area of ​​the cigarette 1 near the heating area, so that the cigarette 1 emits smoke.

[0121] During this process, the heat of the heating zone is blocked by two sets of spiral heat-insulating mechanisms located on the upper and lower sides of the spiral heating mechanism 3, so that the temperature of the auxiliary heating zone 20 is much lower than that of the heating zone in the early stage of smoking. As a result, the temperature of the area of ​​the cigarette 1 near the auxiliary heating zone 20 is much lower than that of the other area, thus forming a gradient heating of the cigarette in the early stage of smoking. As a result, the first puff of smoke contains smoke with a higher temperature after being heated by the heating zone, and smoke with a lower temperature after being heated by the auxiliary heating zone 20. The mixing of the two gases reduces the overall temperature of the first puff of smoke.

[0122] As the smoking time increases, even with the delayed heat transfer caused by the circumferential heat-insulating component 21, the temperature of the auxiliary heating zone 20 can be raised to a level close to that of the heating zone in the later stages of smoking. This allows for sufficient heating of the entire cigarette, thus making full use of the cigarette 1.

[0123] Example 4:

[0124] like Figure 4 As shown, a radial gradient heating device for heating cigarettes according to the present invention includes:

[0125] Heat-conducting pipe 2 for inserting cigarette 1;

[0126] The heat-insulating mechanism is located on the heat-conducting pipe 2 and divides the heat-conducting pipe 2 into a heating zone and an auxiliary heating zone 20.

[0127] Heating mechanism 3 is fixedly installed on the heating area of ​​heat pipe 2 and is used to heat the heating area of ​​heat pipe 2.

[0128] The heat-insulating mechanism is used to extend the time for heat to be transferred from the heating zone to the auxiliary heating zone 20;

[0129] When the heat pipe 2 is in a vertical position, the arc length of the heating zone that adheres to the side wall of the cigarette 1 at the same horizontal level is less than two-thirds of the circumference of the heat pipe 2.

[0130] Heating mechanism 3 is an arc-shaped heating element.

[0131] The heat pipe 2 is heated by using an arc-shaped heating element as the heating mechanism 3. The structure is simple, easy to assemble, and highly practical.

[0132] The central axis of the arc-shaped heating element coincides with the central axis of the heat pipe 2.

[0133] The heat pipe 2 is heated by an arc-shaped heating element that coincides with the central axis of the heat pipe 2. The structure is simple, easy to manufacture, and highly practical.

[0134] There are multiple heating zones;

[0135] Multiple heating zones are located at different heights on the heat pipe 2 and are staggered.

[0136] Each heating zone is equipped with an arc-shaped heating element, and multiple arc-shaped heating elements heat up sequentially. In this embodiment, two arc-shaped heating elements are preferred; however, a single arc-shaped heating element can also be used depending on the actual situation. This embodiment uses multiple heating zones located at different heights of the heat-conducting pipe 2 and arranged in an alternating manner, with independently operating arc-shaped heating elements on each zone. This allows for sequential heating of the heat-conducting pipe 2 at different heights and orientations, heating different parts of the cigarette at different times. This enables rapid heating of the cigarette during the first few puffs, ensuring sufficient smoke release and reducing the preheating time of the smoking device. Simultaneously, it avoids the problem of excessively high smoke temperature due to rapid moisture loss in the early stages of smoking, which could lead to insufficient moisture in the smoke later on, affecting the smoking experience. This design is highly practical.

[0137] The heat-insulating mechanism includes an axial heat-insulating component 22, which is used to extend the time for heat from the heating zone to be transferred to the auxiliary heating zone 20 along the axial direction of the heat pipe 2.

[0138] The axial heat-insulating component 22 creates a distinction between the heating zone and the auxiliary heating zone 20 in the vertical direction. This prevents heat from being directly transferred axially to the auxiliary heating zone 20 of another arc-shaped heating element when one arc-shaped heating element is heating the heating zone of the heat pipe 2. This makes the system highly practical.

[0139] The heat-insulating mechanism includes a circumferential heat-insulating component 21, which is used to extend the time for heat from the heating zone to be transferred to the auxiliary heating zone 20 along the circumference of the heat pipe 2.

[0140] The circumferential heat-insulating component 21 distinguishes the heating zone and the auxiliary heating zone 20 in the horizontal direction. This prevents heat from being directly transferred radially to the auxiliary heating zone 20 when the arc-shaped heating element heats the heating zone of the heat pipe 2, thus improving its practicality.

[0141] The heat-insulating mechanism includes an end heat-insulating component 23, which is located at the end of the heat-conducting pipe 2 and is used to extend the time for heat from the heating zone to be transferred from the end of the heat-conducting pipe 2 to the auxiliary heating zone 20 along the circumference of the heat-conducting pipe 2.

[0142] By using the end heat-insulating component 23 at the end of the heat pipe 2, the time it takes for the heat from the heating zone to be transferred from the end of the heat pipe 2 to the auxiliary heating zone 20 along the circumference of the heat pipe 2 is extended, which is highly practical.

[0143] The heat-insulating mechanism is a slot formed on the heat-conducting pipe 2.

[0144] In practice, depending on the actual situation, one can also choose to directly cut the heat pipe 2 and then use a material that is resistant to high temperature and has low thermal conductivity to complete the combination of the heating zone and the auxiliary heating zone 20. In this embodiment, a heat-insulating mechanism is formed by slots, thereby forming the heating zone and the auxiliary heating zone 20 on the heat pipe 2. The structure is simple, easy to process, and highly practical.

[0145] An auxiliary heating mechanism 30 is installed on the auxiliary heating zone 20. The auxiliary heating mechanism 30 is used to heat the auxiliary heating zone 20 in the later stage of suction.

[0146] By setting an auxiliary heating mechanism 30 on the auxiliary heating zone 20, when a higher temperature is required in the later stage of smoking, the auxiliary heating mechanism 30 directly heats the auxiliary heating zone 20, thereby rapidly increasing the temperature of the auxiliary heating zone 20, and then rapidly heating the cigarette 1 area corresponding to the auxiliary heating zone 20, so as to heat the entire cigarette with sufficient temperature and make full use of the cigarette 1.

[0147] In this embodiment, when in use, the cigarette 1 is inserted into the heat-conducting pipe 2, so that the side wall of the cigarette 1 is in close contact with the inner wall of the heat-conducting pipe 2. Then, the heating mechanism 3, which is composed of arc-shaped heating plates, heats the heating area of ​​the heat-conducting pipe 2. In turn, the heating area of ​​the heat-conducting pipe 2 heats the side of the cigarette 1 near the heating area, so that the cigarette 1 emits smoke.

[0148] During this process, the circumferential heat-insulating component 21 formed by the vertical slots hinders the circumferential transfer of heat in the heating zone, that is, it hinders the lateral transfer of heat in the horizontal direction.

[0149] Meanwhile, the axial heat-insulating component 22, which is composed of transverse slots, hinders the axial transfer of heat from the heating zone, that is, it hinders the vertical transfer of heat in the vertical direction.

[0150] As a result, the temperature of the auxiliary heating zone 20 is much lower than that of the heating zone in the early stage of smoking, which in turn makes the temperature of the side of the cigarette 1 near the auxiliary heating zone 20 much lower than that of the other side, thus forming a gradient heating of the cigarette in the early stage of smoking. As a result, the first puff of smoke contains smoke that is heated to a higher temperature by the heating zone and smoke that is heated to a lower temperature by the auxiliary heating zone 20, corresponding to the auxiliary heating zone 20. The mixing of the two gases reduces the overall temperature of the first puff of smoke.

[0151] As the smoking time increases, even with the delayed heat transfer caused by the circumferential heat-insulating component 21, in the later stages of smoking, the auxiliary heating mechanism 30 provides secondary heating to the auxiliary heating zone 20, allowing the temperature of the auxiliary heating zone 20 to rise to a level close to that of the heating zone. This enables sufficient heating of the entire cigarette, achieving full utilization of the cigarette 1.

[0152] Example 5:

[0153] like Figure 2 and Figure 5 As shown, a radial gradient heating device for heating cigarettes according to the present invention includes:

[0154] Heat-conducting pipe 2 for inserting cigarette 1;

[0155] The heat-insulating mechanism is located on the heat-conducting pipe 2 and divides the heat-conducting pipe 2 into a heating zone and an auxiliary heating zone 20.

[0156] Heating mechanism 3 is fixedly installed on the heating area of ​​heat pipe 2 and is used to heat the heating area of ​​heat pipe 2.

[0157] The heat-insulating mechanism is used to extend the time for heat to be transferred from the heating zone to the auxiliary heating zone 20;

[0158] When the heat pipe 2 is in a vertical position, the arc length of the heating zone that adheres to the side wall of the cigarette 1 at the same horizontal level is less than two-thirds of the circumference of the heat pipe 2.

[0159] There are two heating zones;

[0160] The two heating zones are located at different heights of the heat pipe 2 and are staggered.

[0161] Each of the two heating zones is equipped with an independently operating heating mechanism 3;

[0162] The two heating mechanisms 3 generate heat according to the preset first temperature line and the second temperature line, respectively;

[0163] The temperature value of the first temperature line gradually decreases over time, while the temperature value of the second temperature line gradually increases over time.

[0164] The initial temperature of the first temperature line is higher than the initial temperature of the second temperature line, and the final temperature of the first temperature line is lower than the final temperature of the second temperature line.

[0165] Two heating zones are staggered at different heights of the heat pipe 2, and an independently operating heating mechanism 3 is set in each of the two heating zones. For easy distinction, the heating temperatures of the two heating mechanisms 3 are respectively recorded as the first temperature line and the second temperature line.

[0166] The temperature of the first temperature line gradually decreases over time;

[0167] The temperature of the second temperature line gradually increases over time;

[0168] Meanwhile, both the first and second temperature lines are pre-calibrated lines showing the relationship between temperature values ​​and time.

[0169] The initial temperature of the first temperature line is higher than the initial temperature of the second temperature line; the final temperature of the first temperature line is lower than the final temperature of the second temperature line. That is, the first and second temperature lines intersect at a point, and the time and temperature value corresponding to this intersection can be flexibly determined based on actual conditions. Furthermore, the initial temperature, final temperature, temperature change (temperature rise, temperature fall), and timing of change for each of the first and second temperature lines can be calibrated according to actual conditions.

[0170] By using two staggered heating zones located at different heights of the heat pipe 2, and each zone equipped with an independently operating heating mechanism 3, the heat pipe 2 is heated at different temperatures at different heights and locations. This allows for rapid heating of the cigarette during the first few puffs, ensuring sufficient smoke release and reducing the preheating time of the smoking device. Simultaneously, it prevents excessively high smoke temperatures caused by rapid moisture loss in the early stages, which could lead to insufficient moisture in the smoke later in the smoking process, affecting the smoking experience. Therefore, it ensures a relatively balanced smoke temperature, moisture content, and the content of various substances in the smoke throughout the smoking process, thereby improving smoke stability and demonstrating strong practicality.

[0171] The foregoing has provided a detailed description of a radial gradient heating device for heating cigarettes provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A radial gradient heating device for heating cigarettes, characterized in that: include: Heat-conducting pipe (2) for inserting cigarettes (1); A heat-insulating mechanism is located on the heat-conducting pipe (2), which divides the heat-conducting pipe (2) into a heating zone and an auxiliary heating zone (20). Heating mechanism (3), which is fixedly installed on the heating area of ​​heat pipe (2) and is used to heat the heating area of ​​heat pipe (2); The heat-insulating mechanism is used to extend the time for heat to be transferred from the heating zone to the auxiliary heating zone (20); When the heat pipe (2) is in a vertical state, the arc length of the heating zone that is attached to the side wall of the cigarette (1) at the same horizontal level is less than two-thirds of the circumference of the heat pipe (2).

2. The radial gradient heating device for heating cigarettes according to claim 1, characterized in that: The heating mechanism (3) is an arc-shaped heating element; the central axis of the arc-shaped heating element coincides with the central axis of the heat pipe (2).

3. The radial gradient heating device for heating cigarettes according to claim 2, characterized in that: The heating zone is multiple; The multiple heating zones are located at different heights of the heat pipe (2) and are staggered; Each of the heating zones is provided with an arc-shaped heating element, and multiple arc-shaped heating elements heat up sequentially.

4. A radial gradient heating device for heating cigarettes according to claim 3, characterized in that: The heat-insulating mechanism includes an axial heat-insulating component (22), which is used to extend the time for the heat in the heating zone to be transferred to the auxiliary heating zone (20) along the axial direction of the heat-conducting pipe (2).

5. A radial gradient heating device for heating cigarettes according to any one of claims 2-4, characterized in that: The heat-insulating mechanism includes a circumferential heat-insulating component (21), which is used to extend the time for heat from the heating zone to be transferred to the auxiliary heating zone (20) along the circumference of the heat pipe (2).

6. A radial gradient heating device for heating cigarettes according to claim 1, characterized in that: The heating mechanism (3) is spiral-shaped; The heat-insulating mechanism consists of two sets, which are spiral in shape; The two sets of heat-resistant mechanisms are located on the upper and lower sides of the heating mechanism (3), respectively.

7. A radial gradient heating device for heating cigarettes according to claim 1, characterized in that: The heat-insulating mechanism includes an end heat-insulating component (23), which is located at the end of the heat-conducting pipe (2) and is used to extend the time for the heat in the heating zone to be transferred from the end of the heat-conducting pipe (2) to the auxiliary heating zone (20) along the circumference of the heat-conducting pipe (2).

8. A radial gradient heating device for heating cigarettes according to claim 1, characterized in that: The heat-insulating mechanism is a slot formed on the heat-conducting pipe (2).

9. A radial gradient heating device for heating cigarettes according to claim 1, characterized in that: An auxiliary heating mechanism (30) is installed on the auxiliary heating zone (20), which is used to heat the auxiliary heating zone (20) in the later stage of suction.

10. A radial gradient heating device for heating cigarettes according to claim 1, characterized in that: There are two heating zones; The two heating zones are located at different heights of the heat pipe (2) and are staggered; Each of the heating zones is provided with a heating mechanism (3); The two heating mechanisms (3) generate heat according to the preset first temperature line and the second temperature line respectively; The temperature value of the first temperature line gradually decreases over time, while the temperature value of the second temperature line gradually increases over time. The initial temperature of the first temperature line is higher than the initial temperature of the second temperature line, and the final temperature of the first temperature line is lower than the final temperature of the second temperature line.

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