Heating piece for aerosol generating rod and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generating devices, in particular to a heating piece for an aerosol generating rod and an aerosol generating device. The heating part comprises a heating rod and a spiral protrusion, the heating rod is provided with an insertion end and an installation end, the insertion end is used for being inserted into the aerosol generating rod, the installation end is used for installing the heating rod, and the spiral protrusion protrudes out of the outer surface of the heating rod. And the spiral bulge spirally extends along the periphery of the heating rod and is integrally formed with the heating rod. The heating part is used for being inserted into the aerosol generating rod, and comprises the spiral protrusion which protrudes out of the outer surface of the heating rod, so that after the heating part is inserted into the aerosol generating rod, the spiral protrusion can increase the heat conduction contact area between the heating part and the aerosol generating rod, and the heat transfer efficiency of the heating part to the aerosol generating rod is improved; therefore, the technical problem of slow temperature rise of the aerosol generating rod caused by small contact area of the aerosol generating rod and the heating piece is solved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and in particular to a heating element for an aerosol generating rod and an aerosol generating device. Background Art

[0002] The aerosol generating device is used to heat the aerosol generating substrate to generate aerosol for the user to inhale. The aerosol generating substrate includes a rod-shaped substrate and a liquid matrix, and the rod-shaped substrate is an aerosol generating rod. The aerosol generating device can heat the aerosol generating rod by inserting a heating element into the aerosol generating rod. The current aerosol generating rod, especially the aerosol generating rod made of disordered filamentary material, has a small contact area with the heating element, and the aerosol generating rod has the problem of slow heating. Utility Model Content

[0003] The present application provides a heating element for an aerosol generating rod, which is used to improve the technical problem that the aerosol generating rod heats up slowly due to the small contact area between the aerosol generating rod and the heating element.

[0004] In addition, the present application also aims to provide an aerosol generating device using a heater for an aerosol generating rod.

[0005] In a first aspect, an embodiment provides a heating element for an aerosol generating rod, wherein the heating element is used to be inserted into the aerosol generating rod, the heating element comprises a heating rod and a spiral protrusion, the heating rod has an insertion end and an installation end, the insertion end is used to be inserted into the aerosol generating rod, the installation end is used to install the heating rod, the spiral protrusion protrudes from the outer surface of the heating rod, the spiral protrusion extends spirally along the outer circumference of the heating rod and is integrally formed with the heating rod.

[0006] Furthermore, in one embodiment, the heating rod includes a heat-conducting tube and a heating element, the heating element is located inside the heat-conducting tube and in thermal contact with the heat-conducting tube, and the spiral protrusion surrounds the outer circumference of the heat-conducting tube and is integrally formed with the heat-conducting tube.

[0007] Furthermore, in one embodiment, the heat pipe has a protruding tube wall protruding from the outer wall of the heat pipe, the spiral protrusion is formed by the protruding tube wall protruding outward, a spiral groove is formed on the inner side of the protruding tube wall, and at least a portion of the heating element is arranged in the spiral groove and extends in a spiral shape along the spiral groove.

[0008] Furthermore, in one embodiment, the inner wall of the heat pipe has a spiral groove, and at least a portion of the heat generating element is arranged in the spiral groove and extends in a spiral shape along the spiral groove.

[0009] Furthermore, in one embodiment, the heating element is a spiral heating wire, and the spiral heating wire is embedded in the spiral protrusion.

[0010] Furthermore, in one embodiment, the heating element includes a spiral heating wire, and at least a portion of the spiral heating wire is located in the spiral groove.

[0011] Further, in one embodiment, the heating rod includes a first section and a second section, the insertion end is on the first section, the spiral protrusion includes a first protrusion on the first section and a second protrusion on the second section, and the distance that the first protrusion protrudes from the first section is smaller than the distance that the second protrusion protrudes from the second section.

[0012] Furthermore, in one embodiment, the spiral protrusion is sawtooth-shaped.

[0013] In a second aspect, an embodiment provides an aerosol generating device, comprising a device housing and a heating element, wherein the device housing has a receiving cavity for inserting an aerosol generating rod, and the heating element is inserted into the receiving cavity;

[0014] The heating element is used to be inserted into the aerosol generating rod, and the heating element includes a heating rod and a spiral protrusion. The heating rod has an insertion end and a mounting end. The insertion end is used to be inserted into the aerosol generating rod, and the mounting end is used to mount the heating rod. The spiral protrusion protrudes from the outer surface of the heating rod, and the spiral protrusion extends spirally along the outer circumference of the heating rod and is integrally formed with the heating rod.

[0015] Furthermore, in one embodiment, the heating rod includes a heat-conducting tube and a heating element, the heating element is located inside the heat-conducting tube and in thermal contact with the heat-conducting tube, and the spiral protrusion surrounds the outer circumference of the heat-conducting tube and is integrally formed with the heat-conducting tube.

[0016] Furthermore, in one embodiment, the heat pipe has a protruding tube wall protruding from the outer wall of the heat pipe, the spiral protrusion is formed by the protruding tube wall protruding outward, a spiral groove is formed on the inner side of the protruding tube wall, and at least a portion of the heating element is arranged in the spiral groove and extends in a spiral shape along the spiral groove.

[0017] Furthermore, in one embodiment, the inner wall of the heat pipe has a spiral groove, and at least a portion of the heat generating element is arranged in the spiral groove and extends in a spiral shape along the spiral groove.

[0018] Furthermore, in one embodiment, the heating element is a spiral heating wire, and the spiral heating wire is embedded in the spiral protrusion.

[0019] Furthermore, in one embodiment, the heating element includes a spiral heating wire, and at least a portion of the spiral heating wire is located in the spiral groove.

[0020] Further, in one embodiment, the heating rod includes a first section and a second section, the insertion end is on the first section, the spiral protrusion includes a first protrusion on the first section and a second protrusion on the second section, and the distance that the first protrusion protrudes from the first section is smaller than the distance that the second protrusion protrudes from the second section.

[0021] Furthermore, in one embodiment, the spiral protrusion is sawtooth-shaped.

[0022] Furthermore, in one embodiment, the aerosol generating device includes a containing cup, the containing cavity is in the containing cup, the heating element is inserted in the containing cup, and an air intake gap is formed between the containing cup and the device shell, and the air intake gap connects the inner cavity of the containing cup with the outside world, so that when the aerosol generating stick is inhaled, the outside gas can pass through the air intake gap and then enter the aerosol generating stick.

[0023] According to the heating element for the aerosol generating rod in the above-mentioned embodiment, the heating element is used to be inserted into the aerosol generating rod. Since the heating element includes a spiral protrusion, the spiral protrusion protrudes from the outer surface of the heating rod. After the heating element is inserted into the aerosol generating rod, the spiral protrusion can increase the thermal contact area between the heating element and the aerosol generating rod, thereby improving the heat transfer efficiency from the heating element to the aerosol generating rod, thereby improving the technical problem of slow heating of the aerosol generating rod due to the small contact area between the aerosol generating rod and the heating element.

[0024] Furthermore, a spiral groove is formed on the inner side of the protruding tube wall of the heat-conducting tube, and at least a part of the heating element is arranged in the spiral groove, so that the heat of the heating element can be quickly transferred to the aerosol generating rod, further improving the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an aerosol generating device in an embodiment;

[0026] Figure 2 is a top view of an aerosol generating device in one embodiment;

[0027] Figure 3 For along Figure 1 Sectional view of AA in the middle;

[0028] Figure 4 for Figure 3 A partial view of

[0029] Figure 5 is a cross-sectional view of a heating element in one embodiment;

[0030] Figure 6 is a cross-sectional view of a heating element in another embodiment;

[0031] Figure 7It is a cross-sectional view of the heating element in the third embodiment.

[0032] List of feature names corresponding to the figure marks in the figure: 1. Device shell; 11. Receiving cavity; 12. Shell; 121. Shell hole; 13. Mounting tube; 2. Heating element; 21. Heating rod; 211. Insertion end; 212. Mounting end; 213. Heat pipe; 2131. Spiral groove; 214. Heating element; 2140. Spiral heating wire; 22. Spiral protrusion; 3. Receiving cup; 31. Buckle; 4. Air intake spacer; 5. Heating element support; 6. Battery.

[0033] Explanation on the reference numerals in brackets in the drawings: In the reference numerals in brackets in the drawings, the features referred to by the reference numerals are both the features represented by the numbers in the brackets and the features represented by the numbers outside the brackets. DETAILED DESCRIPTION

[0034] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0035] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0036] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0037] Before the aerosol generating device is introduced in detail, the heating object of the aerosol generating rod heating element, i.e., the aerosol generating rod (not shown in the figure), is first described. The aerosol generating rod contains an aerosol generating substrate for generating aerosol, and the aerosol generating substrate can be an aerosol filament or an aerosol sheet. The aerosol generating rod is a heat-not-burn rod, and the aerosol generating rod is heated by the aerosol generating device, and the aerosol generating rod is not burned and generates aerosol.

[0038] One end of the aerosol generating stick is a suction end for inhaling aerosol, and the other end is an air inlet end, which is breathable and allows gas to enter the aerosol generating stick during inhalation. In one embodiment, the suction end of the aerosol generating stick has a filter (not shown in the figure). The filter (not shown in the figure) can be made of various existing or future feasible materials, such as sponge, filter paper, etc.

[0039] Please refer to Figures 1 to 3 In one embodiment, the aerosol generating device comprises a device shell 1 and a heating element 2, wherein the device shell 1 has a receiving cavity 11 for inserting an aerosol generating rod, and the heating element 2 is inserted into the receiving cavity 11. In one embodiment, the heating element 2 is used to insert the aerosol generating rod of the disordered aerosol generating matrix.

[0040] In one embodiment, please refer to Figures 3 to 5 The heating element 2 is used to be inserted into the aerosol generating rod. The heating element 2 is an electric heating element. When the electric heating element is powered on, it heats the aerosol generating rod. The heating element 2 includes a heating rod 21 and a spiral protrusion 22. The heating rod 21 has an insertion end 211 and a mounting end 212. The insertion end 211 is used to be inserted into the aerosol generating rod, and the mounting end 212 is used to mount the heating rod 21. The spiral protrusion 22 is wound around the outer circumference of the heating rod 21 and is integrally formed with the heating rod 21.

[0041] The spiral protrusion 22 and the heating rod 21 can be integrally formed in any feasible manner. For example, in one embodiment, please refer to Figures 3 to 5 The heating rod 21 and the spiral protrusion 22 are both made of ceramic materials. In this case, the spiral protrusion 22 and the heating rod 21 can be sintered as one piece. For example, in one embodiment, the heating rod 21 and the spiral protrusion 22 can also be insulating heat-conductive plastics. In this case, the heating rod 21 and the spiral protrusion 22 can be injection molded as one piece. For example, in one embodiment, the heating rod 21 and the spiral protrusion 22 can also be heat-conductive metal materials. In this case, the heating rod 21 and the spiral protrusion 22 can be cast or extruded as one piece.

[0042] The spiral protrusion 22 of the heating element 2 in the present application protrudes from the outer surface of the heating rod 21, which can increase the contact area with the aerosol generating rod, thereby accelerating the heat conduction speed to the aerosol generating rod, thereby improving the heat conduction efficiency, improving the heating efficiency of the heating element 2, and improving the current technical problem of slow heating speed of the aerosol generating rod.

[0043] Regarding the heating form of the electric heating element 2, in one embodiment, please refer to Figures 3 to 5 The heating rod 21 includes a heat pipe 213 and a heating element 214. The heating element 214 is located in the heat pipe 213 and in thermal contact with the heat pipe 213. The spiral protrusion 22 surrounds the outer circumference of the heat pipe 213 and is integrally formed with the heat pipe 213. The processing of the spiral protrusion 22 is facilitated by separating the heat pipe 213 from the heating element 214.

[0044] Regarding the assembly form of the heating element 214 and the heat pipe 213, the heating element 214 is installed inside the heat pipe 213 or embedded in the heat pipe 213. For example, in one embodiment, please refer to Figure 7 The heating element 214 may be a spiral heating wire 2140 embedded in the heat pipe 213. In this case, the heat pipe 213 is preferably made of an insulating heat-conducting material. Of course, an insulating layer may be applied to the outer periphery of the resistance wire. In this case, the heat pipe 213 may also be made of a conductive material. For another example, the heating element 214 may also be a heating film printed on the inner side of the heat pipe 213. The outer side of the heating film has an insulating layer. In this case, the heat pipe 213 may be a metal pipe with good thermal conductivity. For another example, please refer to Figures 3 to 5 The heating element 214 may also be a resistance wire in the heat pipe 213 and in thermal contact with the inner wall of the heat pipe 213 .

[0045] The heating element 214 can also adopt electromagnetic induction heating. For example, an inductor coil is arranged outside the heat pipe 213. In order to avoid interference between the inductor coil and the aerosol generating rod, the inductor coil should be outside the accommodating cavity 11. The heat pipe 213 itself is made of magnetic induction material. In this case, the heat pipe 213 itself is the heating element 214; or a heating element 214 made of magnetic induction material is arranged inside the heat pipe 213, and the heating element 214 generates heat by electromagnetic induction heating.

[0046] Further, in one embodiment, please refer to Figure 6 The inner wall of the heat pipe 213 has a spiral groove 2131, and at least part of the heating element 214 is arranged in the spiral groove 2131, and the part of the heating element 214 in the spiral groove 2131 extends in a spiral shape along the spiral groove 2131. In this way, the heating element 214 can be pre-positioned through the spiral groove 2131, which facilitates the installation of the heating element 214 and prevents the heating element 214 from leaving the heating pipe easily.

[0047] Further, regarding the structure of the spiral protrusion 22, in one embodiment, please refer to Figures 3 to 5 The heat conducting tube 213 has a protruding tube wall protruding from the outer wall of the heat conducting tube 213, and the spiral protrusion 22 is formed by the protruding tube wall protruding outward. A spiral groove 2131 is formed on the inner side of the protruding tube wall, and at least part of the heating element 214 is arranged in the spiral groove 2131. In this way, when the spiral protrusion 22 is formed, the spiral groove 2131 can be formed in the heat conducting tube 213 at the same time. By arranging at least part of the heating element 214 in the spiral groove 2131, the heat generated by the heating element 214 can be quickly transferred to the aerosol generating rod, further improving the heating efficiency of the heating element 2. The part of the heating element 214 in the spiral groove 2131 extends in a spiral shape along the spiral groove 2131, so that the heating element 214 can be pre-positioned by the spiral groove 2131, which facilitates the installation of the heating element 214 and makes it difficult for the heating element 214 to leave the heating tube.

[0048] In addition to the above installation methods, in one embodiment, please refer to Figure 7 , the heating element 214 is a spiral heating wire 2140, and the spiral heating wire 2140 is embedded in the spiral protrusion 22. In this way, the distance between the spiral heating wire 2140 and the aerosol generating rod is shorter, and the heating speed is faster. In some other embodiments, the spiral heating wire 2140 can also be embedded in the heat conducting pipe 213.

[0049] Further, in one embodiment, please refer to Figures 3 to 7 , the insertion end 211 is a closed tip, and the closed tip is used to guide the heating rod 21 to be inserted into the aerosol generating rod, and the wiring portion mounting end 212 of the heating element 214 extends out of the heat conducting tube 213, which facilitates the wiring of the heating element 214. In some other embodiments, when the diameter of the heating rod 21 is small, the end face of the insertion end can also be an outer convex arc surface or a plane. In some other embodiments, the heating rod is a cylindrical rod. In some other embodiments, the heating rod can also be other shapes such as a quadrangular prism, a hexagonal prism, and an elliptical column.

[0050] Regarding the shape of the spiral protrusion 22, further, in one embodiment, please refer to Figures 3 to 7 , the spiral protrusion 22 is serrated. In addition to the serrated shape, in one embodiment, the surface of the spiral protrusion 22 can also be a smooth curved surface, and the portion where the spiral protrusion 22 and the heat pipe 213 are connected has a smooth transition. In some other embodiments, the cross section of the spiral protrusion 22 can be any feasible shape such as a triangle, a semicircle, a rectangle, etc.

[0051] In one embodiment, the spiral protrusion 22 may also be in a segmented form, for example, the heating rod 21 includes a first section and a second section, the insertion end 211 is on the first section, the spiral protrusion 22 includes a first protrusion on the first section and a second protrusion on the second section, and the distance that the first protrusion protrudes from the first section is less than the distance that the second protrusion protrudes from the second section. This makes it convenient for the heating rod 21 to be inserted into the aerosol generating rod. Among them, the distance that the first protrusion protrudes from the first section refers to the distance between the farthest point of the first protrusion protruding from the first section and the root of the first protrusion, and the distance that the second protrusion protrudes from the second section refers to the distance between the farthest point of the second end of the second protrusion and the root of the second protrusion. Of course, in one embodiment, in the extension direction of the spiral protrusion 22, the distance that the spiral protrusion 22 protrudes from the heat pipe 213 can be equal everywhere.

[0052] For the assembly method of the heating element 2, please refer to Figure 3 and Figure 4 In one embodiment, the aerosol generating device includes a containing cup 3, a containing cavity 11 is in the containing cup 3, a heating element 2 is inserted into the containing cup 3 from the bottom of the containing cup 3, and an air intake gap 4 is formed between the containing cup 3 and the device shell. The external airflow enters the containing cup 3 after passing through the air intake gap 4, and then enters the aerosol generating rod and is sucked away. Since the heat of the aerosol generating rod is transferred to the air intake gap 4 through the containing cup 3, the airflow can be heated through the air intake gap 4, which can reduce heat loss and further improve the heating efficiency of the aerosol generating rod.

[0053] In one embodiment, please refer to Figure 3 and Figure 4 The outer wall of the receiving cup 3 has a buckle 31, and the receiving cup 3 is fixed in the device shell 1 by the buckle 31. The device shell 1 includes a shell 12 and a mounting tube 13 in the middle, and the receiving cup 3 is clamped in the mounting tube 13, and the lower end of the mounting tube 13 is open. The aerosol generating device includes a heating element support 5, and the heating element 2 is fixed on the heating element support 5. The heating element support 5 is plugged into one end of the mounting tube 13. The mounting tube 13, the receiving cup 3 and the heating element support 5 surround the air inlet space 4.

[0054] In one embodiment, the shell 12 has a shell hole 121 communicated with the accommodating chamber 11 , and the shell hole 121 is for inserting the aerosol generating rod.

[0055] In one embodiment, please refer to Figures 3 to 5 , the working process of the aerosol generating device is described as follows:

[0056] Insert the aerosol generating rod into the containing cavity 11 of the containing cup 3, insert the inserting end 211 of the heating element 2 into the aerosol generating rod, turn on the switch of the heating element 2 to start heating, and after aerosol is generated in the aerosol generating rod, the aerosol can be sucked by sucking the suction end of the aerosol generating rod. During the process of sucking the aerosol, the air intake interval 4 is connected to the outside world, and the outside gas enters the air intake interval 4 and then enters the containing cup 3, and then enters the aerosol generating rod to replenish gas. After the aerosol generating rod is used, turn off the heating element 2, and then take out the aerosol generating rod.

[0057] In one embodiment, please refer to Figure 3 The aerosol generating device comprises a power source for supplying power to the heating element 2. The power source comprises a battery 6, and a battery 6 compartment for accommodating the battery 6 is provided in the device housing 1.

[0058] In an embodiment of a heating element for an aerosol generating rod, the structure of the heating element for the aerosol generating rod is the same as the structure described in any of the above embodiments, and the details are not repeated here.

[0059] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A heating element for an aerosol generating rod, the heating element being inserted into the aerosol generating rod, characterized in that: The heating element includes a heating rod and a spiral protrusion, the heating rod having an insertion end and a mounting end, the insertion end is used to insert into the aerosol generating rod, the mounting end is used to mount the heating rod, the spiral protrusion protrudes from the outer surface of the heating rod, the spiral protrusion extends spirally along the outer circumference of the heating rod and is integrally formed with the heating rod.

2. The heating element for an aerosol generating rod according to claim 1, characterized in that: The heating rod comprises a heat-conducting pipe and a heating element, wherein the heating element is located in the heat-conducting pipe and in thermal contact with the heat-conducting pipe, and the spiral protrusion surrounds the outer circumference of the heat-conducting pipe and is integrally formed with the heat-conducting pipe.

3. The heating element for an aerosol generating rod according to claim 2, characterized in that: The heat-conducting tube has a protruding tube wall protruding from the outer wall surface of the heat-conducting tube, the spiral protrusion is formed by the protruding tube wall protruding outward, a spiral groove is formed on the inner side of the protruding tube wall, and at least part of the heating element is arranged in the spiral groove and extends in a spiral shape along the spiral groove.

4. The heating element for an aerosol generating rod according to claim 2, wherein: The inner wall of the heat-conducting pipe has a spiral groove, and at least a portion of the heating element is arranged in the spiral groove and extends in a spiral shape along the spiral groove.

5. The heating element for an aerosol generating rod according to claim 2, characterized in that: The heating element is a spiral heating wire, and the spiral heating wire is embedded in the spiral protrusion.

6. The heating element for an aerosol generating rod according to claim 3 or 4, characterized in that: The heating element comprises a spiral heating wire, and at least a portion of the spiral heating wire is located in the spiral groove.

7. The heating element for an aerosol generating rod according to any one of claims 1 to 5, characterized in that: The heating rod includes a first section and a second section, the insertion end is located on the first section, the spiral protrusion includes a first protrusion located on the first section and a second protrusion located on the second section, and the distance that the first protrusion protrudes from the first section is smaller than the distance that the second protrusion protrudes from the second section.

8. The heating element for an aerosol generating rod according to any one of claims 1 to 5, characterized in that: The spiral protrusion is sawtooth-shaped.

9. An aerosol generating device, characterized in that: The device comprises a device shell and a heating element as described in any one of claims 1 to 8, wherein the device shell has a receiving cavity for inserting an aerosol generating rod, and the heating element is inserted into the receiving cavity.

10. The aerosol generating device according to claim 9, characterized in that The aerosol generating device comprises a containing cup, the containing cavity is in the containing cup, the heating element is inserted in the containing cup, an air intake gap is formed between the containing cup and the device shell, and the air intake gap connects the inner cavity of the containing cup with the outside world so that external gas can enter the aerosol generating rod through the air intake gap when the aerosol generating rod is inhaled.

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