Baking Smoking Utensils

Abstract

The present invention relates to a smoking device, comprising a cylindrical smoke tube, and a sheet-shaped heating element that can be detachably inserted into the smoke tube. The heating element comprises a first side and a second side that are opposite to each other in the width direction, and the first side and the second side are respectively provided with a relief portion that allows the thickness of the heating element to gradually decrease toward the edge in the width direction; wherein, the center line of the heating element is located in the middle of the smoke tube, and the distances from the two opposite sides of the heating element in the width direction to the inner wall surface of the smoke tube are equivalent. The two side edges of the heating element gradually become thinner, and when the heating element is inserted into a cigarette, the pressure of the two side edges of the heating element on the tobacco can be reduced, so that the tobacco on the two side edges corresponding to the relief portion will not be greatly squeezed and compressed, thereby alleviating the tobacco pressure at the side end, and improving the tobacco atomization efficiency. The relief portion can also present a smooth transition to prevent the tobacco from adhering to the side end surface of the heating element.

Description

Technical Field

[0001] The present invention relates to a cigarette substitute, and more particularly to a smoking device. Background Art

[0002] When the flat heating plate is inserted into the cylindrical smoke tube of the tobacco drying utensil, the pressure of the tobacco in the center area of ​​the heating plate is different from that on the two sides. The tobacco on the two sides will be squeezed with greater force, causing the edges of the heating plate to be in closer contact with the tobacco and easily leave tobacco stains. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an improved smoking utensil.

[0004] The technical solution adopted by the present invention to solve the technical problem is: construct a baking smoking device, comprising a cylindrical smoking tube and a sheet-shaped heating element which is detachably inserted into the smoking tube;

[0005] The heating element comprises a first side and a second side opposite to each other in the width direction, and the first side and the second side are respectively provided with a relief portion for gradually reducing the thickness of the heating element toward the edge in the width direction;

[0006] The center line of the heating element is located in the middle of the chimney, and the distances from two opposite sides of the heating element in the width direction to the inner wall surface of the chimney are equal.

[0007] Preferably, the heating element comprises a first side and a second side opposite to each other in the thickness direction;

[0008] The avoidance portion includes a chamfer set on the first side and / or the second side edge corresponding to the first side, and a chamfer set on the first side and / or the second side edge corresponding to the second side; the chamfer includes a bevel or a rounded corner.

[0009] Preferably, two opposite sides in the width direction of the first side and the second side are respectively provided with the chamfers, and the avoidance portions of the first side and the second side form the first side and the second side of the heating element into rounded edges or pointed edges.

[0010] Preferably, the first side or the second side edge of the first side is provided with a chamfer, and the first side or the second side edge of the second side is provided with a chamfer, so that the first side and the second side form sharp-angled edges.

[0011] Preferably, one end of the heating element is provided with a pointed tip which is convenient for inserting a cigarette.

[0012] Preferably, the heating element comprises a sheet-like substrate, an insulating layer covering the sheet-like substrate, and a conductive path disposed on the insulating layer, and the conductive path generates heat when electricity is supplied thereto.

[0013] Preferably, the sheet-like substrate is made of metal or alloy, and the avoidance portion is formed by stamping.

[0014] Preferably, the sheet substrate comprises a flat surface between avoidance portions at two opposite sides of the heating element, and the conductive path is printed and formed in the flat surface area.

[0015] Preferably, the heating element further comprises an isolation layer covering the outside of the conductive path.

[0016] Preferably, the isolation layer is a glaze layer formed by firing glass glaze, and the outer surface of the heating element is covered with the isolation layer.

[0017] The tobacco baking device of the present invention has the following beneficial effects: the two sides of the heating element are gradually thinned, and when the heating element is inserted into a cigarette, the pressure of the two sides of the heating element on the tobacco can be reduced, so that the tobacco on the two sides corresponding to the avoidance portion will not be greatly squeezed and compressed, and the pressure on the tobacco at the side ends is relieved, and the tobacco atomization efficiency is improved. The avoidance portion can also present a smooth transition to prevent the tobacco from sticking to the side end surface of the heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 is a schematic cross-sectional structure diagram of a heating element of a smoking device according to an embodiment of the present invention when the heating element is inserted into a smoke tube with a cigarette;

[0020] Figure 2 It is a schematic diagram of the structure of the heating assembly of the present invention;

[0021] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of the heating element;

[0022] Figure 4 It is a schematic diagram of the decomposition of each layer of the heating component of the present invention;

[0023] Figure 5 This is the temperature field distribution diagram when the sheet substrate is metal and the cigarette is heated;

[0024] Figure 6 yes Figure 2 A schematic diagram of a heating element in which the width thereof gradually changes;

[0025] Figure 7 This is the temperature field distribution diagram when the heating element is zirconium oxide and the cigarette is heated. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0027] like Figure 1 , Figure 2 As shown, the smoking device in a preferred embodiment of the present invention comprises a cylindrical smoking tube 1 and a heating assembly 2 . The heating assembly 2 comprises a heating element 21 , a lead wire 22 and a mounting seat 23 .

[0028] Combination Figures 1 to 3 As shown, the heating element 21 is in sheet form and can be inserted into the chimney 1 in a removable manner. The heating element 21 includes a first end A and a second end B opposite to each other in the length direction. The first end A extends outwards and the heating element 21 can be inserted into the chimney 1 of the smoking device from the first end A.

[0029] The heating element 21 includes a first side C and a second side D opposite to each other in the width direction, and the first side C and the second side D are respectively provided with a relief portion 211 for gradually reducing the thickness of the heating element 21 toward the edge in the width direction. The center line of the heating element 21 is located in the middle of the chimney 1, and the distances from the two opposite sides of the heating element 21 in the width direction to the inner wall surface of the chimney 1 are equal.

[0030] The two sides of the heating element 21 are gradually thinned. When the heating element 21 is inserted into the cigarette 3, the pressure of the two sides of the heating element 21 on the tobacco can be reduced, so that the tobacco on the two sides corresponding to the avoidance portion 211 will not be greatly squeezed and compressed, and the pressure on the side end tobacco is relieved, and the tobacco atomization efficiency is improved. The avoidance portion 211 can also present a smooth transition to prevent the tobacco from sticking to the side end surface of the heating element 21.

[0031] The heating element 21 includes a first side E and a second side F opposite to each other in the thickness direction. The avoidance portion 211 includes chamfers set at the edges of the first side E and the second side F corresponding to the first side C, and chamfers set at the edges of the first side E and the second side F corresponding to the second side D.

[0032] The chamfer includes an oblique angle or a rounded angle. The edges of the first side E and the second side F of the first side C are respectively provided with chamfers, and the edges of the first side E and the second side F of the second side D are respectively provided with chamfers. The avoidance portion 211 of the first side C and the second side D forms the first side C and the second side D of the heating element 21 into rounded edges or pointed edges.

[0033] In other embodiments, the avoidance portion 211 may also be a chamfer set only on the edge of the first side E or the second side F corresponding to the first side C, and a chamfer set only on the edge of the first side E or the second side F corresponding to the second side D, so that the first side C and the second side are formed into sharp edges, which is convenient for one-time stamping.

[0034] The avoidance portions 211 on two opposite sides have a smooth transition, or are polished or glazed, which can effectively prevent tobacco from sticking to the sides and relieve tobacco backlog.

[0035] Recombination Figure 4 As shown, the heating element 21 includes a sheet substrate 212 made of metal, an insulating layer 213 covering the sheet substrate 212, and a conductive path 214 arranged outside the insulating layer 213. The lead 22 is connected to the conductive path 214, and the lead 22 is led outward. After the lead 22 is connected to the conductive path 214 and energized, the conductive path 214 heats up to atomize the tobacco.

[0036] Preferably, the substrate of the heating element 21 is made of metal or alloy, and the sheet substrate 212 can be made of common metal materials such as stainless steel or titanium alloy, preferably stainless steel, such as 430 and 304 stainless steel. The thickness of the sheet substrate 212 is usually 0.2-0.8 mm, and it is formed by stamping or wire cutting, which is low in cost. The avoidance portion 211 on the sheet substrate 212 of metal material can be stamped to further save costs. The length, width and other dimensions of the heating element 21 match the diameter and length of the cigarette used with it, which is conducive to sufficient heating of tobacco.

[0037] A sheet substrate 212 made of metal material is used as the main body of the heating element 21. It has high toughness, which can effectively prevent the heating element 21 from breaking under long-term high temperature and mechanical impact such as cigarette loading. At the same time, the good thermal conductivity of the sheet substrate 212 made of metal material ensures the uniformity of the surface temperature of the heating element 21, which is conducive to heating non-combustion cigarettes to obtain a better taste.

[0038] like Figure 5 , Figure 7 As shown, according to the steady-state simulation experiment, in the same temperature field, the area around the stainless steel heating element 21 exceeding 215 degrees is larger than that of the ceramic heating element 21 such as zirconia, so the atomization efficiency is higher and the taste is better.

[0039] Preferably, the first end A of the sheet substrate 212 is provided with a pointed tip 215 which is convenient for inserting the cigarette 3. The pointed tip 215 can guide the insertion of the heating element 21 and reduce the resistance during insertion.

[0040] In order to meet the process requirements of printing the conductive path 214 onto the sheet substrate 212, the sheet substrate 212 includes a flat surface 2121 between the avoidance portions 211 on two opposite sides of the heating element 21, and the conductive path 214 is printed and formed in the flat surface 2121. The avoidance portions 211 are arranged outward from two opposite sides of the flat surface 2121 in the width direction.

[0041] The insulating layer 213 is formed by coating the surface of the sheet substrate 212 with glass paste containing silicon oxide, calcium oxide, and aluminum oxide and sintering at 400-1000° C. Since the sheet substrate 212 made of metal or alloy is conductive, the insulating layer 213 can prevent a short circuit between the sheet substrate 212 and the conductive path 214 .

[0042] The insulating layer 213 is coated on the sheet substrate 212 by spraying or printing. The thickness of the insulating layer 213 can be designed according to the withstand voltage requirement between the conductive path 214 and the sheet substrate 212. Generally, the thickness of the insulating layer 213 is less than 0.1 mm.

[0043] In order to prevent the sheet substrate 212 made of metal from being oxidized during high-temperature use, preferably, both sides of the sheet substrate 212 are covered with an insulating layer 213. The conductive path 214 is located on the insulating layer 213 on one side. The insulating layer 213 can also be provided on only one side of the sheet substrate 212 for the conductive path 214 to be provided. When the substrate of the heating element 21 is a non-metallic non-conductive material, the insulating layer 213 can also be eliminated.

[0044] The conductive path 214 is used as a resistance heater and can be a conductive layer formed on the insulating layer 213 by physical vapor deposition, electroplating, or printing.

[0045] Preferably, the conductive path 214 includes a heating resistor 2141 and an electrical connection portion electrically connected to the heating resistor 2141. The heating resistor 2141 and the electrical connection portion are arranged along the length direction of the sheet substrate 212. The conductive electrode 2142 is connected to an external circuit. Preferably, the electrical connection portion includes two conductive electrodes 2142 electrically connected to the heating resistor 2141.

[0046] The lead wire 22 is connected to the conductive electrode 2142 and is led out along the length direction of the heating element 21 away from one end of the heating resistor 2141, that is, the heating resistor 2141 and the conductive electrode 2142 are arranged from the first end A to the second end B, and the lead wire 22 is led out from the second end B.

[0047] The heating resistor 2141 can be formed by printing and sintering any one of silver-palladium resistor paste, ruthenium-palladium resistor paste, platinum paste, and nickel-based paste. The pattern of the heating resistor 2141 can be flexibly set to match the paste characteristics and the thickness of the heating resistor 2141 to obtain the appropriate resistance required for the heating element 21. The resistance of the heating element 21 is generally between 0.3-2.0Ω; the thickness of the heating resistor 2141 is generally less than 0.1mm, preferably less than 20um. The conductive electrode 2142 is formed by printing and sintering a relatively low resistivity silver-based paste.

[0048] When the lead wire 22 is energized with an external power source, the heating resistor 2141 can be energized and heated, and the lead wire 22 can be connected to the conductive electrode 2142 by high-temperature brazing with silver-copper solder or pure silver solder or nickel solder in a protective atmosphere of 600-1100°C; the lead wire 22 is connected to the conductive electrode 2142 by soldering with a high-temperature solder paste, and the operating temperature is greater than 300°C.

[0049] Since the metal sheet substrate 212 has good thermal conductivity, in order to prevent heat loss, a through hole 2122 is provided in the length direction section of the sheet substrate 212 where the conductive electrode 2142 is located. The through hole 2122 can isolate heat and reduce the heat transferred to the second end B.

[0050] Since the temperature of the section corresponding to the conductive electrode 2142 is relatively low, the tobacco cannot be fully atomized, and the tobacco shreds there can store and absorb a certain amount of tobacco oil, thereby preventing or reducing the leakage of tobacco oil from there.

[0051] There is a large temperature gradient between the section of the heating element 21 corresponding to the heating resistor 2141 inserted into the tobacco and the section corresponding to the conductive electrode 2142. The temperature of the section corresponding to the conductive electrode 2142 is relatively low, and the heat dissipation is small, which is conducive to the effective use of energy.

[0052] In order to isolate the heating resistor 2141 from the external air and further improve its service life and stability, the heating element 21 further includes an isolation layer 216 covering the outside of the conductive path 214 .

[0053] The isolation layer 216 is a glaze layer formed by firing glass glaze, and its thickness is generally less than 0.1 mm. Both sides of the sheet substrate 212 are covered with the isolation layer 216. The glaze layer makes the surface of the heating plate smooth and has a small roughness, reduces the adhesion of tobacco stains and tobacco oil after tobacco baking, and is easy to scrub. In other embodiments, the isolation layer 216 can also be covered only on the side where the conductive path 214 is located.

[0054] Preferably, if Figure 6 As shown, in order to facilitate the insertion of the heating element 21 into the cigarette 3, the width of the heating element 21 from the first end A to the second end B gradually widens, so that the heating element 21 is in the shape of a sword. The first end A is narrow. Combined with the thinning structure of the avoidance portion 211, the resistance of the heating element 21 during insertion is small, which is conducive to insertion and can also effectively reduce the accumulation of tobacco on the side of the heating plate; the widening of the bottom of the heating element is beneficial to increase the strength of the heating plate, and prevent the heating element from breaking due to repeated insertion and removal of cigarettes.

[0055] Typically, the included angle between two opposite sides in the width direction of the tip 215 is greater than the included angle between two opposite sides in the width direction of the second end B of the heating element 21. In other embodiments, the heating element 21 may also be triangular.

[0056] For example Figure 2 As shown, the mounting seat 23 is sleeved on the second end B of the heating element 21, that is, sleeved on the end of the lead 22 on the heating element 21, and sleeved on the electrical connection portion. In other embodiments, the mounting seat 23 can also be an independent component and installed on the heating element 21 separately.

[0057] The pointed tip 215 is located at one end of the heating element 21 away from the mounting seat 23, and the mounting seat 23 and the pointed tip 215 are respectively located at two opposite ends of the heating element 21. After the pointed tip 215 of the heating element 21 is inserted into the chimney 1, the mounting seat 23 will abut against the outer end of the chimney 1, thereby limiting the insertion depth of the heating element 21.

[0058] Since the through hole 2122 is provided in the lengthwise section of the sheet substrate 212 where the conductive electrode 2142 is located, the heat transfer to the second end B is reduced, and the temperature of the mounting seat 23 is prevented from being too high.

[0059] Since no heating zone is provided between the second end B where the mounting base 23 is located and the conductive electrode 2142, the possibility of generating harmful gases is reduced, and the material selection range of the mounting base 23 is wider, thereby reducing costs. Generally, the mounting base is injection molded by a polymer, and commonly used materials include polyetheretherketone, high-temperature nylon, and the like.

[0060] It can be understood that the above-mentioned technical features can be used in any combination without limitation.

[0061] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A baking smoking utensil, characterized in that: It comprises a cylindrical chimney (1), and a sheet-shaped heating element (21) which is detachably inserted into the chimney (1); The heating element (21) comprises a first side (C) and a second side (D) opposite to each other in the width direction, and the first side (C) and the second side (D) are respectively provided with avoidance portions (211) which allow the thickness of the heating element (21) to gradually decrease towards the edge in the width direction and present a smooth transition, so as to reduce the pressure of the two sides of the heating element (21) on the tobacco; The center line of the heating element (21) is located in the middle of the chimney (1), and the distances from two opposite sides of the heating element (21) in the width direction to the inner wall surface of the chimney (1) are equal; The heating element (21) comprises a first side (E) and a second side (F) opposite to each other in the thickness direction; the heating element (21) comprises a sheet-like substrate (212); the sheet-like substrate (212) comprises a flat surface (2121) between avoidance portions (211) located at two opposite sides of the heating element (21); the flat surface (2121) is located at the first side (E) and the second side (F), respectively, and the avoidance portions (211) are arranged outwardly from two opposite sides of the flat surface (2121) in the width direction.

2. The baking smoking device according to claim 1, characterized in that: The avoidance portion (211) comprises a chamfer provided at an edge of the first side (E) and / or the second side (F) corresponding to the first side (C), and a chamfer provided at an edge of the first side (E) and / or the second side (F) corresponding to the second side (D); the chamfer comprises a bevel or a rounded corner.

3. The baking smoking utensil according to claim 2, characterized in that: The chamfers are respectively provided on two opposite sides in the width direction of the first side (E) and the second side (F), and the avoidance portions (211) of the first side (C) and the second side (D) form the first side (C) and the second side (D) of the heating element (21) into rounded edges or pointed edges.

4. The baking smoking utensil according to claim 2, characterized in that: The first side (E) or the second side (F) edge of the first side (C) is chamfered, and the first side (E) or the second side (F) edge of the second side (D) is chamfered, so that the first side (C) and the second side (D) form pointed edges.

5. The baking smoking device according to claim 1, characterized in that: One end of the heating element (21) is provided with a pointed tip (215) that facilitates insertion of the cigarette (3).

6. The smoking device according to any one of claims 1 to 5, characterized in that: The heating element (21) comprises an insulating layer (213) covering the sheet-like substrate (212), and a conductive path (214) disposed on the insulating layer (213), wherein the conductive path (214) generates heat when electricity is supplied thereto.

7. The baking smoking utensil according to claim 4, characterized in that: The sheet-like substrate (212) is made of metal or alloy, and the avoidance portion (211) is formed by stamping.

8. The baking smoking utensil according to claim 6, characterized in that: The conductive path (214) is formed by printing in the flat surface (2121) area.

9. The baking smoking utensil according to claim 6, characterized in that: The heating element (21) further comprises an isolation layer (216) covering the outside of the conductive path (214).

10. The baking smoking utensil according to claim 9, characterized in that: The isolation layer (216) is a glaze layer formed by firing glass glaze, and the outer surface of the heating element (21) is covered with the isolation layer (216).

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