Smoking set with heat conduction structure

Abstract

A smoking set with a heat conduction structure comprises a heat conduction sleeve, a heat conduction sleeve installed in a heat insulation sleeve and a heating body used for generating heat to heat a cigarette. The heat conduction sleeve and the heat insulation sleeve jointly form a cigarette containing cavity, the heat conduction sleeve comprises a base and an enclosure fixed to the base, the enclosure and the base define a heating cavity matched with a cigarette fuming part in size, a through hole matched with the heating body in size is formed in the middle of the base, and a heat conduction support is fixed to the bottom of the heating body. The heating body is inserted into the heating cavity from the through hole, the heat conduction support is connected with the base through surface contact, and the heat conduction support and the heat conduction sleeve are both made of heat conduction materials, so that heat of the heating body can be transmitted to the heat conduction sleeve through the heat conduction support. The inside and outside of the cigarette are heated at the same time, the preheating waiting time before smoking of the heated cigarette is shortened, and the smoke amount is also increased.

Description

Technical Field

[0001] The utility model belongs to a heat-not-burn cigarette smoking device, and particularly relates to a smoking device with a heat conduction structure. Background Art

[0002] The heating methods of heat-not-burn cigarette smoking devices are mainly divided into surrounding heating and central heating. When a central heating cigarette smoking device is used, a heating element will be inserted into the tobacco material from the end of the cigarette, and heat inside the tobacco material will be conducted from the center to the outside. Since the contact area between the heating element and the tobacco material is small and the heat conduction is slow, a preheating process is required after the heat-not-burn cigarette starts to be heated before it can be smoked, which affects the consumer experience. For the integrated method of central heating and surrounding heating, since the surrounding heating element is usually a closed ring, and then electromagnetic induction is used to generate heat in the central and surrounding heating elements to heat the cigarette. The ring-shaped metal heating element makes the magnetic induction lines concentrated on the ring-shaped body, forming a magnetic field shielding effect on the central heating element. Therefore, it will affect the absorption and conversion of magnetic flux by the central heating element, resulting in low central heating efficiency and uneven heating, which affects the taste of the e-cigarette. Content of the Utility Model

[0003] The utility model provides a smoking device with a heat conduction structure to solve the deficiencies of the prior art, which can conduct the heat of the heating element to the cigarette from multiple directions simultaneously during the heating process of the heat-not-burn cigarette smoking device, and greatly reduce the preheating waiting time before consumers smoke.

[0004] To achieve the above object, the utility model first proposes a smoking device with a heat conduction structure, including a heat conduction sleeve, a heat conduction sleeve installed in a heat insulation sleeve, and a heating element for generating heat to heat the cigarette; the heat conduction sleeve and the heat insulation sleeve together form a cigarette accommodating cavity. The heat conduction sleeve includes a base and a surrounding part fixed on the base. The surrounding part and the base enclose a heating cavity that matches the size of the tobacco part of the cigarette. A through hole that matches the size of the heating element is provided in the middle of the base. A heat conduction bracket is fixed at the bottom of the heating element. The heating element is inserted into the heating cavity from the through hole, and the heat conduction bracket is connected to the base by surface contact. The heat conduction bracket and the heat conduction sleeve are both made of heat conduction materials, so that the heat of the heating element can be transferred to the heat conduction sleeve through the heat conduction bracket.

[0005] In this embodiment, the lower surface of the heat conduction sleeve and the upper surface of the heat conduction bracket are both flat surfaces. To further improve the heat conduction effect, the lower surface of the heat conduction sleeve and the upper surface of the heat conduction bracket can be connected through a heat conduction silicone grease layer.

[0006] In this embodiment, the heat conduction rate of the heat conduction sleeve is not less than 20 W / (m·K).

[0007] In this embodiment, the heat conduction sleeve is made of aluminum nitride ceramic, silicon carbide ceramic, silicon nitride ceramic, aluminum, copper, zinc or silver.

[0008] In this embodiment, the surface roughness of the heat-conducting sleeve is not higher than Ra3.2 μm. The lower surface roughness reduces heat radiation loss, enabling more heat to be used for heating the cigarette rod rather than dissipating into the surrounding environment.

[0009] In this embodiment, the heat-insulating sleeve is a cylindrical shape with openings at both the upper and lower ends. The upper side of the heat-insulating sleeve is an inlet for the cigarette rod to be inserted. An annular groove matching the outer diameter of the heat-conducting sleeve is provided on the inner wall of the lower side of the heat-insulating sleeve. The heat-conducting sleeve is installed in the annular groove, and after the heat-conducting sleeve is installed in the annular groove, the inner wall of the heat-conducting sleeve is flush with the inner wall of the heat-insulating sleeve.

[0010] In this embodiment, the melting point of the heat-insulating sleeve is not lower than 200 °C, and the thermal conductivity of the heat-insulating sleeve is not higher than 2 W / (m·K).

[0011] In this embodiment, the heat-insulating sleeve is made of polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polybenzimidazole (PBI), polyarylsulfone (PASF), or fluoroplastics (such as FEP, PTFE), or a heat-insulating sleeve made by laminating the above-mentioned multiple materials in a hierarchical relationship in sequence from the inside to the outside or from the outside to the inside.

[0012] In this embodiment, at least three axially arranged protrusions are provided on the inner wall of the annular groove of the heat-insulating sleeve to form heat-insulating ribs. The multiple heat-insulating ribs are evenly arranged symmetrically with the central axis of the heat-insulating sleeve as the axis of symmetry. After the heat-conducting sleeve is installed in the annular groove, the outer wall of the heat-conducting sleeve contacts the heat-insulating ribs, reducing the heat transfer area and lowering the heat conduction between the heat-conducting sleeve and the heat-insulating sleeve.

[0013] In this embodiment, at least one circumferentially extending boss is provided on the outer wall of the heat-conducting sleeve surrounded. After the heat-conducting sleeve is installed in the annular groove of the heat-insulating sleeve, the heat-conducting sleeve contacts the heat-insulating ribs of the annular groove through the boss, further reducing the heat transfer area and lowering the outward heat conduction.

[0014] Adopting the above structure, this structure has the following advantages:

[0015] 1. This application utilizes the cooperation of a heat-conducting bracket for fixing the heating element and a heat-conducting sleeve. On the one hand, the heating element is arranged in the heating cavity of the heat-conducting sleeve to heat the middle part of the cigarette. On the other hand, while the heat-conducting bracket fixes the heating element on the smoking device, the heat-conducting bracket also serves as a heat-conducting component. The heat-conducting bracket is connected to the base through surface contact. Both the heat-conducting bracket and the heat-conducting sleeve are made of heat-conducting materials, ensuring that the heat of the heating element is efficiently and evenly conducted to the enclosure through the heat-conducting bracket and the base, and then transferred to the cigarette in contact with the enclosure through the enclosure, realizing enclosure heating. Therefore, this application uses the heating element to achieve both central heating and enclosure heating. The way of simultaneous internal and external heating can reduce the preheating time of the cigarette and ensure uniform heating inside and outside the cigarette, improving the amount of smoke and the smoking experience.

[0016] 2. Since there is only one heating element, namely the heating element, there is no fixed connection inertia between the heat-insulating sleeve and the heat-conducting sleeve, and the disassembly of the heat-insulating sleeve and the heat-conducting sleeve will not be interfered by the wire harness, thus facilitating the subsequent replacement or cleaning of the heat-insulating sleeve and the heat-conducting sleeve.

[0017] 3. The heat-conducting sleeve is made of a material with high heat conductivity and is in direct contact with the heating element through the heat-conducting bracket. The heat-conducting bracket is also made of heat-conducting material, ensuring that heat can be efficiently transferred from the heating element to the heat-conducting sleeve. Due to the use of a material with high heat conductivity, the heat transfer efficiency is high, enabling the cigarette to be quickly heated and improving the heating efficiency of the smoking device.

[0018] 4. The heat-insulating sleeve is made of a material with low heat conductivity, forming a heat-insulating layer surrounding the outside of the heat-conducting sleeve, preventing heat from being conducted to other parts of the smoking device, protecting other parts of the smoking device from the influence of high temperature, improving the safety of using the smoking device, and also preventing the user from being scalded during use.

[0019] 5. The outer wall of the heat-conducting sleeve contacts the heat-insulating ribs of the heat-insulating sleeve, reducing the heat transfer area, forming an air heat-insulating layer between the heat-conducting sleeve and the heat-insulating sleeve, reducing the heat conduction between the heat-conducting sleeve and the heat-insulating sleeve, making the heat more concentrated for heating the cigarette, reducing the preheating waiting time, and improving the smoking experience.

[0020] 6. At least one convex platform extending circumferentially is provided on the outer wall of the heat-conducting sleeve. The heat-conducting sleeve contacts the heat-insulating ribs of the annular groove through the convex platform, further reducing the heat transfer area and reducing the outward conduction of heat.

[0021] In summary, the present device adopts the method of a heat-conducting sleeve and a heat-insulating sleeve, optimizing the heat conduction path from the heat-not-burn smoking device to the heat-not-burn cigarette. The heating element is inserted into the interior of the cigarette, and the heat conducts from the inside to the outside. At the same time, the heat-conducting sleeve conducts the heat at the part of the lower portion of the heating element that is not in contact with the cigarette to the outside of the cigarette, and the heat conducts from the outside to the inside, achieving simultaneous heating of the inside and outside of the cigarette, reducing the preheating waiting time before sucking the heat-not-burn cigarette, and also increasing the amount of smoke. The heat-insulating sleeve prevents the heat of the heat-conducting sleeve from further conducting outward, reducing energy loss, lowering the surface temperature of the smoking device, and improving the energy utilization rate of the smoking device. Description of the Drawings

[0022] Figure 1 is a cross-sectional view of the present utility model;

[0023] Figure 2 is a schematic structural view of the present utility model after inserting a cigarette;

[0024] Figure 3 is a schematic structural view of the heat-conducting sleeve of the present utility model;

[0025] Figure 4 is a schematic diagram of the heat conduction path of the present utility model;

[0026] Figure 5 is a schematic structural view of the heat-insulating sleeve in Embodiment 2 of the present utility model;

[0027] Figure 6 is Figure 1 a cross-sectional view taken along line A-A in

[0028] Figure 7 is a schematic structural view of the heat-conducting sleeve in Embodiment 3 of the present utility model;

[0029] Figure 8 is a cross-sectional view of the assembled heat-conducting sleeve and heat-insulating sleeve in Embodiment 3 of the present utility model.

[0030] In the drawings, 1, heat-conducting sleeve; 101, surround; 102, base; 103, through hole; 104, boss; 2, heat-insulating sleeve; 201, heat-insulating rib; 3, heating element; 4, heat-conducting bracket; 5, outer shell; 6, circuit board; 7, battery; 8, cigarette. Detailed Embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0032] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] Embodiment 1:

[0034] As Figures 1 to 4 shown, the present utility model provides a smoking device with a heat conduction structure, which includes a heat conduction sleeve 1, a heat conduction sleeve 1 installed in a heat insulation sleeve 2, a heating element 3 for generating heat to heat a cigarette 8, a heat conduction bracket 4 for fixing the heating element 3 on the smoking device, a circuit board 6 for controlling the working process of the heating element 3, and a battery 7 for providing energy to the heating element 3 and the circuit board 6.

[0035] As Figure 2 、 3 shown, the heat conduction sleeve 1 and the heat insulation sleeve 2 together form a cigarette accommodating cavity. The heat conduction sleeve 1 includes a base 102 and an enclosure 101 fixed on the base 102. The enclosure 101 and the base 102 enclose a heating cavity that matches the size of the smoking part of the cigarette. A through hole 103 that matches the size of the heating element 3 is provided in the middle of the base 102. A heat conduction bracket is fixed to the bottom of the heating element 3. The heating element 3 is inserted into the heating cavity from the through hole 103, and the heat conduction bracket 4 and the base 102 are connected by surface contact. Both the heat conduction bracket 4 and the heat conduction sleeve 1 are made of heat-conducting materials, so that the heat of the heating element 3 can be transferred to the heat conduction sleeve 1 through the heat conduction bracket 4. Further, to ensure good contact, the lower surface of the heat conduction sleeve 1 and the upper surface of the heat conduction bracket 4 are both flat. The inner wall of the enclosure 101 is in direct contact with the cigarette 8, and the heat can be conducted along the enclosure 101 to the cigarette 8 to heat the cigarette 8 from the outside to the inside. The outside of the enclosure 101 is in contact with the heat insulation sleeve 2. The heat conduction sleeve 1 is made of a material with a relatively high heat conductivity, and its heat conductivity is above 20 W / (m·K). Preferably, the heat conduction sleeve 1 is made of a metal or ceramic material with a heat conductivity above 100 W / (m·K), such as aluminum nitride ceramic, silicon carbide ceramic, silicon nitride ceramic, aluminum, copper, zinc or silver, etc. Preferably, the material of the heat conduction sleeve 1 is aluminum because aluminum has a relatively high heat conduction coefficient, and at the same time, the infrared emissivity is lower than that of ceramics, copper, and zinc, which can effectively reduce heat radiation and reduce the heat transfer between the heat conduction sleeve 1 and the heat insulation sleeve 2. The larger the surface roughness of the metal material, the higher the infrared emissivity. To further reduce heat radiation, the surface roughness of the heat conduction sleeve 1 is within Ra3.2 μm.

[0036] The heat-insulating sleeve 2 is a cylindrical shape with upper and lower openings, and is used to accommodate the cigarette 8 and prevent the heat of the heat-conducting sleeve 1 from being transferred to other parts of the smoking device during the process of heating the cigarette 8; the upper opening of the heat-insulating sleeve 2 is an inlet for inserting the cigarette 8, and the inner wall of the lower side of the heat-insulating sleeve 2 is provided with an annular groove matching the outer diameter of the heat-conducting sleeve 1, and the heat-conducting sleeve 1 is installed in the annular groove. After the heat-conducting sleeve 1 is installed in the annular groove, the inner wall of the heat-conducting sleeve 1 is flush with the inner wall of the heat-insulating sleeve 2; further, the heat-insulating sleeve 2 is made of a melting point of 200°C or above. The thermal insulation sleeve 2 is made of a polymer material; the thermal conductivity of the thermal insulation sleeve 2 is lower than 2W / (m·K), and preferably, the thermal conductivity of the thermal insulation sleeve 2 is lower than 0.5W / (m·K); the thermal insulation sleeve 2 is made of polyphenylene sulfide (PPS), polyetheretherketone (PEEK), polybenzimidazole (PBI), polyarylsulfone (PASF) or fluoroplastic (such as FEP, PTFE), or a thermal insulation sleeve made by stacking the above-mentioned multiple materials in a hierarchical relationship from inside to outside or from outside to inside.

[0037] When the smoking device heats a cigarette, the heat conduction path is as follows Figure 4 As shown, the upper part of the heating element 3 is inserted into the cigarette 8 and is in direct contact with the inside of the cigarette 8, and the heat is conducted from the inside to the outside. At the same time, the heat-conducting sleeve 1 conducts the heat from the lower part of the heating element 3 that is not in contact with the cigarette 8 to the outside of the cigarette 8, and the heat is conducted from the outside to the inside, thereby achieving simultaneous heating of the inside and outside of the cigarette 8, reducing the preheating waiting time before smoking the heated cigarette 8, and also increasing the amount of smoke.

[0038] Embodiment 2:

[0039] The difference between this embodiment and embodiment 1 is that the heat insulation sleeve 2 is as follows: Figure 5 As shown, the heat insulation sleeve 2 is now provided with at least three axially extending protrusions on the inner wall of the annular groove to form the heat insulation rib 201. Figure 6 As shown, when the heat-conducting sleeve 1 is installed in the heat-insulating sleeve 2, the outer side of the heat-conducting sleeve 1 only contacts the heat-insulating ribs 201 of the heat-insulating sleeve 2, so that the heat transfer area is reduced, and the heat conduction between the heat-conducting sleeve 1 and the heat-insulating sleeve 2 is reduced.

[0040] Embodiment 3:

[0041] like Figure 7 , Figure 8 As shown, the difference between this embodiment and embodiment 2 is that the heat-conducting sleeve 1 is provided with at least one boss 104 extending along the circumferential direction on the outer wall surrounding 101. When the heat-conducting sleeve 1 is installed in the heat-insulating sleeve 2, the outer wall of the heat-conducting sleeve 1 is in contact with the heat-insulating rib 201 of the heat-insulating sleeve 2 only through the boss 104, thereby further reducing the heat transfer area and reducing heat conduction.

[0042] The above are only the preferred embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural transformation made under the concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included within the patent protection scope of the present utility model.

Claims

1. A smoking device with a heat conduction structure, characterized in that: It includes a heat-conducting sleeve (1), a heat-conducting sleeve (1) installed inside a heat-insulating sleeve (2), and a heating element (3) for generating heat to heat a cigarette rod (8); the heat-conducting sleeve (1) and the heat-insulating sleeve (2) together form a cigarette rod accommodating cavity. The heat-conducting sleeve (1) includes a base (102) and an enclosure (101) fixed on the base (102). The enclosure (101) and the base (102) enclose a heating cavity that matches the size of the smoking part of the cigarette rod (8). A through hole (103) that matches the size of the heating element (3) is provided in the middle of the base (102). A heat-conducting bracket (4) is fixed to the bottom of the heating element (3). The heating element (3) is inserted into the heating cavity through the through hole (103), and the heat-conducting bracket (4) is connected to the base (102) by surface contact. Both the heat-conducting bracket (4) and the heat-conducting sleeve (1) are made of heat-conducting materials, so that the heat of the heating element (3) can be transferred to the heat-conducting sleeve (1) through the heat-conducting bracket (4).

2. The smoking device with a heat conduction structure according to claim 1, characterized in that: Both the lower surface of the heat-conducting sleeve (1) and the upper surface of the heat-conducting bracket (4) are flat surfaces.

3. The smoking device with a heat conduction structure according to claim 1, characterized in that: The heat conductivity of the heat-conducting sleeve (1) is not less than 20 W / (m·K).

4. The smoking device with a heat conduction structure according to claim 3, characterized in that: The heat-conducting sleeve (1) is made of aluminum nitride ceramic, silicon carbide ceramic, silicon nitride ceramic, aluminum, copper, zinc or silver.

5. The smoking device with a heat conduction structure according to claim 3, wherein: The surface roughness of the heat-conducting sleeve (1) is not higher than Ra3.2 μm.

6. The smoking device with a heat conduction structure according to any one of claims 1 to 5, characterized in that: The heat-insulating sleeve (2) is a cylindrical shape with openings at both the top and bottom. The upper side of the heat-insulating sleeve (2) is an inlet for the cigarette rod (8) to be inserted. An annular groove that matches the outer diameter of the heat-conducting sleeve (1) is provided on the inner wall of the lower side of the heat-insulating sleeve (2). The heat-conducting sleeve (1) is installed in the annular groove, and after the heat-conducting sleeve (1) is installed in the annular groove, the inner wall of the heat-conducting sleeve (1) is flush with the inner wall of the heat-insulating sleeve (2).

7. The smoking device with a heat conduction structure according to claim 6, wherein: The melting point of the heat-insulating sleeve (2) is not less than 200 °C, and the heat conductivity of the heat-insulating sleeve (2) is not higher than 2 W / (m·K).

8. The smoking device with a heat conduction structure according to claim 7, wherein: The heat-insulating sleeve (2) is made of polyphenylene sulfide, polyether ether ketone, polybenzimidazole, polyarylsulfone or fluoroplastics, or the heat-insulating sleeve (2) is made by laminating the above-mentioned multiple materials in a hierarchical relationship in the order from inside to outside or from outside to inside.

9. The smoking appliance with a heat-conducting structure according to claim 6, characterized in that: At least three axially arranged protrusions are provided on the inner wall of the annular groove of the heat-insulating sleeve (2) to form heat-insulating ribs (201). The multiple heat-insulating ribs (201) are evenly arranged symmetrically with the central axis of the heat-insulating sleeve (2) as the axis of symmetry. After the heat-conducting sleeve (1) is installed in the annular groove, the outer wall of the heat-conducting sleeve (1) contacts the heat-insulating ribs (201).

10. The smoking device with a heat conduction structure according to claim 9, wherein: At least one circumferentially extending boss (104) is provided on the outer wall of the enclosure (101) of the heat-conducting sleeve (1). After the heat-conducting sleeve (1) is installed in the annular groove of the heat-insulating sleeve (2), the heat-conducting sleeve (1) contacts the heat-insulating ribs (201) of the annular groove through the boss (104).

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