A heat-not-burn smoking device with dual heating of radiation and conduction

Abstract

The present invention discloses a heat-not-burn smoking device with dual heating of radiation and conduction, comprising a tube body, an air guide layer and a heating component; the tube body comprises an upper cavity and a lower cavity, the air guide layer is arranged in the tube body, the cavity is located above the air guide layer, and the lower cavity is located below the air guide layer; the upper cavity is used to place cigarettes, and the heating component is arranged in the lower cavity; the heating component comprises a winding heating element, a radiant heating element and a winding base, the winding base is arranged in the middle position of the lower cavity, the winding heating element is arranged on the side wall of the winding base, and a heat conduction channel is arranged in the winding base; the radiant heating element is arranged on the outside of the lower cavity, and a gap is arranged between the winding heating element and the radiant heating element; the present invention utilizes two heating methods, heat radiation and heat conduction, to quickly heat the air to form two hot air flows, and the two hot air flows act on the end and the outer wall of the cigarette respectively, so that the user can generate smoke when taking the first puff, thereby improving the smoking experience.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn, and in particular to a heat-not-burn smoking device with dual heating of radiation and conduction. Background Art

[0002] At present, heat-not-burn tobacco devices mainly use needles or plates to insert into cigarettes for heating. This method is easy to cause the heating needle and heating plate to break during the plugging and unplugging process, thus affecting the use. In addition, the heating starts from the center of the cigarette and heats the outside. The temperature in the middle is high and the temperature on the sides is low, and the overall heating is uneven. The air heating method heats the cigarette by heating the air, and uses the heated air to form an upward airflow that passes through the cigarette, thereby evenly heating the cigarette.

[0003] However, air heating requires airflow to enter the cigarette to effectively heat it. It is difficult for air to enter the cigarette to achieve natural heating. Therefore, when the user uses the smoking device to take the first puff of smoke, the air fails to enter the cigarette, resulting in uneven heating, making the amount of smoke in the first puff small. The user needs to take the first puff to drive the heated air into the cigarette and heat the cigarette evenly. Therefore, the user often needs to take a second puff to form a larger amount of smoke, and the smoking experience is not good. Summary of the invention

[0004] The purpose of the present invention is to provide a heat-not-burn smoking device with dual heating of radiation and conduction, which utilizes heat radiation and heat conduction to quickly heat the air to form two hot air flows, which act on the end and outer wall of the cigarette respectively, so that the user can generate smoke when taking the first puff, thereby improving the smoking experience.

[0005] The present invention provides a heat-not-burn smoking device with dual heating by radiation and conduction, comprising a tube body, an air guide layer and a heating component; the tube body comprises an upper cavity and a lower cavity, the air guide layer is arranged in the tube body, the upper cavity is located above the air guide layer, and the lower cavity is located below the air guide layer; the air guide layer is provided with air guide holes; the upper cavity is used for placing cigarettes, and the heating component is arranged in the lower cavity.

[0006] The heating component includes a wound heating element, a radiant heating element and a wound base, the wound base is arranged in the middle position of the lower cavity, the wound heating element is arranged on the side wall of the wound base, and a heat conduction channel is arranged in the wound base; the radiant heating element is arranged on the outside of the lower cavity, and a gap is provided between the wound heating element and the radiant heating element.

[0007] Furthermore, a heat-conducting layer is provided on the side wall of the winding base, and a heat-conducting through hole is provided on the heat-conducting layer.

[0008] Furthermore, the wound heating element is spirally wound on the side wall of the wound base, and the radiant heating element is arranged on the outside of the wound heating element with the wound base as the central axis; the thermal conductive through hole is located between the wound heating element and the radiant heating element, or the thermal conductive through hole is located above the gap between the wound heating element and the radiant heating element.

[0009] Furthermore, the heat conductive layer abuts against the radiation heating element.

[0010] Furthermore, the upper end of the winding base is arranged through the air guide layer, and the heat conduction channel is used to transport the formed hot air flow to the upper cavity.

[0011] Furthermore, the upper end of the winding base is arranged in the upper cavity, and the end of the cigarette abuts against the upper end of the winding base.

[0012] Furthermore, a transverse through hole is provided on the upper side wall of the winding base.

[0013] Furthermore, a heat radiation layer is provided on the side wall of the upper cavity.

[0014] Furthermore, a reflective layer is provided on the outer side wall of the tube body.

[0015] Furthermore, a heat insulation layer is provided on the outer side wall of the tube body.

[0016] The beneficial effects of the present invention are:

[0017] The present invention arranges a radiant heating element and a wrapped heating element in the lower cavity. On the one hand, the wrapped heating element can quickly heat the wrapped base by heat conduction, so that a hot air flow with an upward trend is formed in the wrapped base. The rising hot air flow can penetrate into the cigarette for heating, thereby ensuring that the cigarette can generate smoke when the user takes the first puff, thereby improving the smoking experience. On the other hand, by arranging the wrapped heating element in the middle position of the lower cavity, the radiant heating element is arranged on the outside of the wrapped heating element and a gap is arranged, the wrapped heating element and the radiant heating element together heat the air in the gap between the two by heat radiation to form a hot air flow, and the hot air flow flows through the air guide layer into the upper cavity to heat the outer wall of the cigarette. In this way, the heating effect on the outer wall of the cigarette can be improved, and two hot air flows are formed by heating in two ways. The two hot air flows act on the end and the outer wall of the cigarette respectively, thereby improving the heating effect and uniformity of the cigarette. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but should not be construed as limiting the present invention.

[0019] In the figure:

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0022] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0023] Figure 4 It is a schematic diagram of the structure of the winding substrate and the winding heating element in the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the radiation heating element in the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the lower cavity in the present invention.

[0026] Figure numerals: 1. tube body; 11. upper cavity; 12. lower cavity; 13. air inlet; 14. air outlet; 15. step portion; 2. air guide layer; 21. air guide hole; 22. avoidance groove; 30. electrode; 31. wound heating element; 32. radiant heating element; 33. wound base; 331. heat conduction channel; 34. heat conduction layer; 341. heat conduction hole; 4. power supply; 5. heat radiation layer; 6. reflection layer; 7. insulation layer. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] The terms "first", "second", "third", "fourth" and the like in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence.

[0029] See also Figure 1 and Figure 2A heat-not-burn smoking device with dual heating of radiation and conduction provided in an embodiment of the present invention comprises a tube body 1, an air guide layer 2 and a heating component; the tube body 1 comprises an upper cavity 11 and a lower cavity 12, the air guide layer 2 is arranged in the tube body 1, the upper cavity 11 is located above the air guide layer 2, and the lower cavity 12 is located below the air guide layer 2; an air guide through hole 21 is provided on the air guide layer 2; the upper cavity 11 is used for placing cigarettes, and the heating component is arranged in the lower cavity 12.

[0030] See also Figure 2 The heating component includes a winding heating element 31, a radiant heating element 32 and a winding base 33. The winding base 33 is arranged in the middle position of the lower cavity 12. The winding heating element 31 is arranged on the side wall of the winding base 33. A heat conduction channel 331 is arranged in the winding base 33; the radiant heating element 32 is arranged on the outer side of the lower cavity 12, and a gap is provided between the winding heating element 31 and the radiant heating element 32.

[0031] Specifically, the tube body 1 is provided with an air inlet 13 and an air outlet 14, the air inlet 13 is arranged in the lower cavity 12, and the air outlet 14 is arranged in the upper cavity 11; the tube body 1 has upper and lower openings, the air inlet 13 is the lower end opening of the tube body 1, and the air outlet 14 is the upper end opening of the tube body 1, and the outside air enters the tube body 1 from the air inlet 13, and the gas in the tube body 1 flows out from the air outlet 14. The material of the tube body 1 can be aluminum, 6063 aluminum alloy, 6061 aluminum alloy, copper, copper alloy, aluminum nitride or silicon carbide, etc., with a thermal conductivity greater than 180W / (m·K).

[0032] In this example, see Figure 3 and Figure 6 The air guide layer 2 is integrally formed at the upper end of the lower cavity 12. The upper end of the lower cavity 12 is recessed at the edge of the air guide layer 2 to form a step portion 15. The inner side wall of the upper cavity 11 is arranged corresponding to the outer edge of the step portion 15. The lower end of the inner side wall of the upper cavity 11 is snap-fitted with the step portion 15, so that the upper cavity 11 is installed on the lower cavity 12.

[0033] In the above arrangement, a radiation heating element 32 and a winding heating element 31 are arranged in the lower cavity 12. On the one hand, the winding heating element 31 can quickly heat the winding base 33 by heat conduction, so that a hot air flow with an upward trend is formed in the winding base 33. The rising hot air flow can penetrate into the cigarette for heating, thereby ensuring that the cigarette can generate smoke when the user takes the first puff, thereby improving the smoking experience; on the other hand, by arranging the winding heating element 31 in the middle position of the lower cavity 12, the radiation heating element is arranged on the outside of the winding heating element 31 and a gap is arranged, the winding heating element 31 and the radiation heating element 32 together heat the air in the gap between the two by heat radiation to form a hot air flow, and flow through the air guide layer 2 into the upper cavity 11 to heat the outer wall of the cigarette. In this way, the heating effect on the outer wall of the cigarette can be improved, and two hot air flows are formed by heating in two ways. The two hot air flows act on the end and the outer wall of the cigarette respectively, thereby improving the heating effect and uniformity of the cigarette.

[0034] Specifically, see Figure 5 , the radiation heating element 32 is a tubular structure, and the winding heating element 31 is arranged at the center of the lower cavity 12; in this embodiment, please refer to Figure 2 The side wall of the radiation heating element 32 is attached to the side wall of the lower cavity 12. The material of the radiation heating element 32 can be a heating material with infrared radiation function such as a carbon layer, a graphite layer, a carbon fiber layer, a carbon nano layer, etc.

[0035] In other embodiments, a gap may be provided between the side wall of the radiation heating element 32 and the side wall of the lower cavity 12, and the radiation heating element 32 may also be provided as a plurality of sheet heating element structures arranged in a matrix with the winding base 33 as the center.

[0036] The wound heating element 31 may be made of metal such as nickel or stainless steel, or metal alloys such as iron-chromium-aluminum, or heating materials such as porous carbon, porous graphite, carbon fiber, carbon or graphite.

[0037] Specifically, see Figure 2 , Figure 4 and Figure 5 , also includes an electrode 30 and a power supply 4; the power supply 4 is used to supply power to the heating component; the electrode 30 includes a positive electrode and a negative electrode 30, and two electrodes 30 are respectively provided on the winding heating element 31 and the radiant heating element 32, and the winding heating element 31 and the radiant heating element 32 are respectively electrically connected to the power supply 4 through the electrodes 30.

[0038] For further information, see Figure 2-Figure 4A heat-conducting layer 34 is disposed on the side wall of the winding base 33 , and a heat-conducting through hole 341 is disposed on the heat-conducting layer 34 .

[0039] Specifically, the thermal via 341 is set through the upper and lower end surfaces of the thermal conductive layer 34. The thermal via 341 can be arranged on the thermal conductive layer 34 in an orderly or disorderly manner. The shape of the thermal via 341 can be circular, elliptical, triangular, rectangular or regular polygonal. In the present embodiment, the shape of the thermal via 341 is preferably circular, and the apertures of the thermal vias 341 can be of the same size or of different sizes.

[0040] In other embodiments, in order to extend the path of the hot air flow and increase the contact area with the heat conductor, the heat conductive through holes 341 may be interconnected to improve the heating effect on the air.

[0041] For further information, see Figure 2 and Figure 4 The wrapped heating element 31 is spirally wound on the side wall of the wrapped base 33, and the radiant heating element 32 is arranged on the outside of the wrapped heating element 31 with the wrapped base 33 as the central axis; the thermal conductive through hole 341 is located between the wrapped heating element 31 and the radiant heating element 32, or the thermal conductive through hole 341 is located above the gap between the wrapped heating element 31 and the radiant heating element 32.

[0042] In this example, see Figure 2 The thermal conductive through hole 341 is located above the gap formed between the winding heating element 31 and the radiant heating element 32 .

[0043] Specifically, the winding heating element 31 is in a strip shape, and the winding heating element 31 is wound on the outer wall of the winding base 33 in a spiral manner.

[0044] With the above arrangement, when the winding heating element 31 is working, it can heat the winding base 33 by heat conduction, and then heat the air in the heat conduction channel 331 to form a hot air flow. At the same time, since the winding heating element 31 is spirally arranged on the outer wall of the winding base 33, the winding heating element 31 transfers heat to the side wall of the heat conduction channel 331 by heat conduction, which is also spiral, so that a spiral rising hot air flow is formed in the heat conduction channel 331 and on the outside of the winding base 33, respectively. The spiral rising hot air flow can It is easy to heat deeply into the cigarette, which improves the efficiency and uniformity of heating the cigarette; the volume inside the heat conduction channel 331 is small, and the hot air flow heats up relatively faster. Therefore, the hot air flow in the heat conduction channel 331 can quickly increase to the required temperature and enter the cigarette for heating, ensuring that the user can generate smoke when taking the first puff; at the same time, the spiral rising airflow formed outside the winding base 33 can also assist the heating airway of the cigarette, and spiral rising hot air flows are formed on the inner and outer sides of the winding base 33 respectively, which has a better heating effect.

[0045] The material of the winding substrate 33 may be aluminum oxide, aluminum nitride or aluminum carbide, or may be aluminum oxide or zirconium oxide with a surface coating, and the material of the surface coating may be aluminum or magnesium.

[0046] For further information, see Figure 2 , the heat-conducting layer 34 abuts against the radiant heating element 32. In this embodiment, the edge of the heat-conducting layer 34 abuts against the side wall of the radiant heating element 32, and the winding base 33 abuts against the radiant heating element 32 through the heat-conducting layer 34, and can be fixedly connected by welding or bonding, so that the winding base 33 is fixedly installed in the tube body 1.

[0047] In other embodiments, the air guide layer 2 may also be disposed on the upper side of the radiant heating element 32, and a snap-in structure such as a groove and a protrusion may be disposed at the connection between the air guide layer 2 and the radiant heating element 32 to achieve mutual connection.

[0048] With the above arrangement, the radiation heat-generating layer can transfer heat to the heat-generating layer after generating heat. When the air flows through the heat-conducting through holes 341 during the rising process, the heat-conducting through holes 341 can further heat the air, thereby improving the heating efficiency.

[0049] For further information, see Figure 2 The upper end of the winding base 33 is arranged through the air guide layer 2, and the heat conduction channel 331 is used to transport the formed hot air flow to the upper cavity 11. The cross section of the heat conduction channel 331 can be circular, elliptical, triangular, rectangular or regular polygonal.

[0050] In the above arrangement, since the temperature of the air guiding layer 2 is mainly increased by the contact of the hot air flow with the air guiding layer 2, and the hot air flow flowing through the air guiding holes 21 is formed by the radiant heating element 32 and the wrapped heating element 31 jointly heating the air in the gap therebetween, and the hot air flow flowing through the air guiding holes 21 into the upper cavity 11 first contacts the outer wall of the cigarette, so the heating speed of the inside of the cigarette is slower; and the rising air flow formed in the heat conducting channel 331 directly enters the inside of the cigarette from the end of the cigarette for heating, so the heating speed of the cigarette is faster.

[0051] For further information, see Figure 2 The upper end of the winding base 33 is arranged in the upper cavity 11, and the end of the cigarette abuts against the upper end of the winding base 33.

[0052] Specifically, a bypass groove 22 is provided on the air guide layer 2 corresponding to the winding base 33 , and the bypass groove 22 is arranged corresponding to the outer diameter of the winding base 33 .

[0053] Among them, the upper end of the winding base 33 can be abutted against the cigarette in a variety of ways. The outer diameter of the winding base 33 can be set to be smaller than the outer diameter of the cigarette, or the outer diameter of the winding base 33 can be larger than the outer diameter of the cigarette, and the inner diameter of the heat-conducting channel 331 can be set to be smaller than the outer diameter of the cigarette; in addition, an abutting structure can be set in the heat-conducting channel 331 or at the end of the winding base 33, and the abutting structure can be a mesh structure or a convex structure, or the end of the heat-conducting channel 331 can be recessed to form a step portion 15 corresponding to the cigarette, and the end of the cigarette can be abutted against the step portion 15; the purpose of abutting the cigarette against the upper end of the winding base 33 and allowing the hot air flow passing through the heat-conducting channel 331 to enter the cigarette for heating can be achieved.

[0054] The above arrangement is such that a gap is provided between the end of the cigarette and the air guiding layer 2 by passing the winding base 33 through the air guiding layer 2 and the cigarette is abutted against the heat conducting channel 331, so that the hot air flow passing through the air guiding hole 21 can better act on the cigarette to heat it.

[0055] Furthermore, a transverse through hole (not shown) is provided on the upper side wall of the winding base 33. With the above arrangement, the hot air flow flowing through the heat conduction channel 331 can flow out from the transverse through hole and enter the upper cavity 11, thereby improving the heating effect on the outer side of the cigarette.

[0056] For further information, see Figure 3A heat radiation layer 5 is provided on the side wall of the upper cavity 11. Specifically, the lower end of the heat radiation layer 5 abuts against the air guide layer 2. The heat radiation layer 5 may be made of a heat-generating material having infrared radiation function, such as a carbon layer, a graphite layer, a carbon fiber layer, or a carbon nanolayer.

[0057] For further information, see Figure 3 A reflective layer 6 is disposed on the outer wall of the tube body 1. The reflective layer 6 may be made of materials such as aluminum foil.

[0058] For further information, see Figure 3 The outer wall of the tube body 1 is also provided with a heat insulation layer 7. The heat insulation layer 7 may be a vacuum insulation tube structure, and may be made of heat insulation cotton or aerogel material.

[0059] In this example, see Figure 3 , the reflecting layer 6 is arranged on the outer side wall of the tube body 1, and the heat insulating layer 7 is arranged on the side of the reflecting layer 6 away from the tube body 1. In other embodiments, the positions of the reflecting layer 6 and the heat insulating layer 7 can be interchanged.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heat-not-burn smoking device with dual heating by radiation and conduction, It is characterized in that The invention comprises a tube body, an air guide layer and a heating component; the tube body comprises an upper cavity and a lower cavity, the air guide layer is arranged in the tube body, the upper cavity is located above the air guide layer, and the lower cavity is located below the air guide layer; the air guide layer is provided with air guide holes; the upper cavity is used to place cigarettes, and the heating component is arranged in the lower cavity; The heating component includes a wound heating element, a radiant heating element and a wound base, the wound base is arranged in the middle position of the lower cavity, the wound heating element is arranged on the side wall of the wound base, and a heat conduction channel is provided in the wound base; the radiant heating element is arranged on the inner side wall of the lower cavity, a gap is provided between the wound heating element and the radiant heating element, a heat conduction layer is provided on the side wall of the wound base, a heat conduction hole is provided on the heat conduction layer, the heat conduction layer is in contact with the radiant heating element, the upper end of the wound base is arranged through the air conduction layer, and the heat conduction channel is used to transport the formed hot air flow to the upper cavity.

2. The heat-not-burn smoking device with dual heating of radiation and conduction as claimed in claim 1, It is characterized in that The wound heating element is spirally wound on the side wall of the wound base, and the radiant heating element is arranged on the outside of the wound heating element with the wound base as the central axis; the thermal conductive through hole is located between the wound heating element and the radiant heating element, or the thermal conductive through hole is located above the gap between the wound heating element and the radiant heating element.

3. The heat-not-burn smoking device with dual heating of radiation and conduction as claimed in claim 1, It is characterized in that The upper end of the winding base is arranged in the upper cavity, and the end of the cigarette abuts against the upper end of the winding base.

4. The heat-not-burn smoking device with dual heating of radiation and conduction as claimed in claim 3, It is characterized in that A transverse through hole is provided on the upper side wall of the winding base.

5. The heat-not-burn smoking device with dual heating of radiation and conduction as claimed in claim 1, It is characterized in that A heat radiation layer is provided on the side wall of the upper cavity.

6. The heat-not-burn smoking device with dual heating of radiation and conduction as claimed in claim 1, It is characterized in that A reflective layer is arranged on the outer side wall of the tube body.

7. The heat-not-burn smoking device with dual heating of radiation and conduction as claimed in claim 1, It is characterized in that A heat insulation layer is also provided on the outer side wall of the tube body.

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