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EP-4173497-B1 - HEATING ASSEMBLY AND VAPING DEVICE COMPRISING THE SAME

EP4173497B1EP 4173497 B1EP4173497 B1EP 4173497B1EP-4173497-B1

Inventors

  • LIU, TUANFANG

Dates

Publication Date
20260506
Application Date
20220321

Claims (9)

  1. A heating assembly (2), comprising a heating element (25) and a base (26); wherein: the base (26) comprises a bottom wall (2609) and a side wall (2603); a space (2605) is surrounded by the bottom wall (2609) and the side wall (2603); the heating element (25) is distributed on the bottom wall (2609) and configured to heat air in the space (2605); and the bottom wall (2609) comprises at least one air outlet (2604) through which the air flows out of the space (2605); characterised in that the bottom wall (2609) comprises a plurality of partitions (260) dividing the space (2605) into a plurality of separate spaces (2601); and the heating element (25) is disposed in the plurality of separate spaces (2601).
  2. The heating assembly (2) of claim 1, wherein the plurality of separate spaces (2601) communicates with one another to form a passage; and two ends of the heating element (25) extend in the passage so that the heating element (25) stretches in each separate space (2601).
  3. The heating assembly (2) of claim 1, wherein the plurality of partitions (260) comprises a plurality of main partitions (2607) with different sizes; the separate spaces (2601) are formed between every two adjacent main partitions (2607); each of the plurality of main partitions (2607) is in the shape of a ring with an opening (2606); a smaller main partition (2607) is disposed in an adjacent larger main partition, and the opening of the smaller main partition (2607) and the opening of the adjacent larger main partition are disposed in two opposite directions.
  4. The heating assembly (2) of claim 3, wherein each of the plurality of partitions (260) further comprises a joint and an auxiliary partition (2608); the joint is disposed opposite to the opening; and the auxiliary partition (2608) extends from the joint through the opening of adjacent larger main partition (2607).
  5. The heating assembly (2) of claim 1, wherein the base (26) comprises a plurality of air outlets (2604) evenly distributed on the bottom wall (2609); the base (26) further comprises at least one protruding part (2611) disposed on an outer surface of the bottom wall (2609); the side wall (2603) comprises a distal end away from the bottom wall (2609); and the distal end extends radially to form a flange (2610).
  6. The heating assembly (2) of claim 5, wherein the heating assembly further comprises a cover (24) disposed on the distal end of the side wall (2603) to cover the space (2605); the cover (24) comprises at least one air inlet (2401) through which the air is conducted into the space (2605); the projection of the at least one air inlet (2401) does not overlap with the at least one air outlet (2604); and the at least one air inlet (2401) communicates with the at least one air outlet (2604) through the space (2605).
  7. The heating assembly (2) of claim 6, wherein the cover (24) comprises a thermal insulating material; and the base (26) and the plurality of partitions (260) comprise a thermally-conductive electrically-insulating material.
  8. The heating assembly (2) of claim 1, wherein the heating element (25) comprises a heating wire and/or a heating tube in a spiral shape.
  9. A vaping device, comprising the heating assembly (2) of claim 1 and a tobacco chamber (1), wherein the tobacco chamber (1) comprises an open top; the heating assembly (2) is disposed on the open top; the bottom wall (2609) covers the open top, and the at least one air outlet (2604) is oriented toward a tobacco material.

Description

The disclosure relates to a heating assembly and a vaping device comprising the same. Conventionally, a heating assembly is disposed in the tobacco material. When the heating assembly is energized, the tobacco material is unevenly heated, which may affect the taste of the tobacco smoke. DE 2019005307 U1 recites a heat regulating system for a hookah. The system includes a carrier, and a holder. The holder has air inlets and one or more air outlets. To solve the aforesaid problems, the first objective of the disclosure is to provide a heating assembly for heating tobacco material. The second objective of the disclosure is to provide a vaping device comprising the heating assembly. The following advantages are associated with the heating assembly and the vaping device of the disclosure: the heating assembly allows the hot air to pass through the tobacco material and enables uniform heat transfer. Heating components are evenly disposed on a bottom wall of a base to give the maximum heating area which allows the heat to be conducted rapidly through the bottom wall of the base. Then the heat is transferred rapidly to the tobacco material to maintain the taste of the tobacco smoke. FIG. 1 is a cross-sectional view of a vaping device according to one example of the disclosure;FIG. 2 is an exploded view of a heating assembly according to one example of the disclosure;FIG. 3 is a perspective view of a heating assembly according to one example of the disclosure;FIG. 4 is a cross-sectional view of a heating assembly according to one example of the disclosure;FIG. 5 is a bottom perspective view of a heating assembly according to one example of the disclosure;FIG. 6 is a perspective view of a base assembled with a heating element according to one example of the disclosure;FIG. 7 is a top view of a base according to one example of the disclosure; andFIG. 8 is a cross-sectional view including arrows showing the direction of air flow in a heating element according to one example of the disclosure. In the drawings, the following reference numbers are used: 1. Tobacco chamber; 2. Heating assembly; 3. Control assembly; 24. Cover; 25. Heating element; 26. Base; 260. Partition; 2401. Air inlet; 2604. Air outlet; 2601. Separate space; 2603. Side wall; 2605. Space; 2606. Opening; 2607. Main partition; 2609. Bottom wall; 2610. Flange; 2611. Protruding part; 2607a. First main partition; 2607b. Second main partition; 2607c. Third main partition; 2608a. First auxiliary partition; and 2608a. Second auxiliary partition. To further illustrate the disclosure, embodiments detailing a heating assembly and a vaping device are described below. It should be noted that the following embodiments are intended to describe and not to limit the disclosure. As shown in FIG. 1, a vaping device comprises a tobacco chamber 1 for holding tobacco material, a heating assembly 2 for heating the tobacco material, and a control assembly 3 for regulating the operation of the heating assembly 2. The control assembly 3 is disposed on the heating assembly 2, and the heating assembly 2 is disposed on the tobacco chamber 1. The control assembly comprises a circuit control board, and optionally further comprises a battery. As shown in FIGS. 2-6, the heating assembly 2 comprises a heating element 25 and a base 26. The base 26 comprises a bottom wall 2609 and a side wall 2603. A space 2605 is surrounded by the bottom wall 2609 and the side wall 2603. The heating element 25 is distributed on the bottom wall 2609 and configured to heat air in the space 2605. The bottom wall 2609 comprises at least one air outlet 2604 through which the heat flows out of the space 2605. The tobacco chamber 1 comprises an open top through which the tobacco material is inserted into the tobacco chamber 1. The bottom wall 2609 is disposed on the tobacco chamber 1 to cover the open top. The focused stream of hot air in the space 2605 flows down through the at least one air outlet 2604 into the tobacco chamber 1, thus warming up evenly throughout the tobacco material. The heating element 25 is distributed on the bottom wall 2609 so as to quickly transfer heat to the bottom wall 2609 and raise the temperature in the tobacco material, thus maintaining the taste of the tobacco smoke. The heating element 25 comprises conductive materials including but not limited to, conductive metals, graphene, and carbon nanomaterials. The heating element is energized to produce the heat; optionally, an electromagnetic field is produced in a coil and causes heat generation in the heating element 25. According to the present invention, the bottom wall 2609 comprises a plurality of partitions 260 dividing the space 2605 into a plurality of separate spaces 2601. The heating element 25 is disposed in the plurality of separate spaces 2601. The plurality of partitions 260 is erected on the bottom wall 2609 using any desired method, such as integral formation or assembly. The plurality of partitions 260 is configured t