CN218978016U - Heating element and electronic cigarette with same - Google Patents

Abstract

The application discloses a heating element and have electron cigarette of this heating element. The heating element comprises a substrate tube, a first resistance layer, a second resistance layer and a first insulation layer. The first resistance layer comprises a first heating circuit and a second heating circuit which are arranged along the axial direction of the base body pipe at intervals, the first heating circuit and the second heating circuit comprise a first connecting end, a second connecting end and a heating section connected between the first connecting end and the second connecting end, the second resistance layer is used for transmitting electric energy for the first resistance layer, and the first insulation layer is arranged between the second resistance layer and the heating section so as to avoid short circuit of the first resistance layer and the second resistance layer. The electronic cigarette comprises the battery unit and the heating piece, the battery unit is electrically connected with the heating piece, the battery unit is used for providing electric energy for the heating piece, the cigarette can stretch into the accommodating space of the heating piece, and the cigarette is heated by controlling one of the first heating circuit and the second heating circuit or by electrifying together, so that the speed and the stability of aerosol generation are effectively controlled.

Description

Heating element and electronic cigarette with same

Technical Field

The application relates to the technical field of electronic smoking sets, in particular to a heating element and an electronic cigarette with the same.

Background

In the technical field of electronic cigarettes, tobacco is heated to a volatilization temperature by a heating element arranged in the electronic cigarette, namely, the tobacco is subjected to heating and non-combustion treatment, so that harmful substances such as tar and the like caused by combustion of the tobacco are avoided. The heating element is used as a core heating element of the electronic cigarette, and the performance of the heating element determines the overall performance and quality level of the electronic cigarette.

At present, the electronic cigarettes are generally heated integrally, and the temperature of the heating element cannot be controlled in different areas.

Disclosure of Invention

In view of the foregoing deficiencies of the prior art, an object of the present application is to provide a heating element and an electronic cigarette having the heating element. Aims at solving the problem that the prior art can not realize zonal heating.

In one aspect, the present application proposes a heating element comprising:

a base tube, in which an accommodating space for accommodating an object to be heated is formed, and an opening through which the object to be heated passes is formed at one end of the base tube in the axial direction;

the first resistor layer comprises a first heating circuit and a second heating circuit which are arranged at intervals along the axial direction of the base tube, wherein the first heating circuit and the second heating circuit comprise a first connecting end, a second connecting end and a heating section connected between the first connecting end and the second connecting end;

the second resistor layer comprises a first electrode, a second electrode and at least one third electrode, wherein the first electrode is electrically connected with the first connecting end of the first heating circuit, the second electrode is electrically connected with the first connecting end of the second heating circuit, the at least one third electrode is electrically connected with the second connecting end of the first heating circuit and the second connecting end of the second heating circuit, the first electrode, the second electrode and the third electrode are arranged at intervals, and the second resistor layer is used for transmitting electric energy for the first resistor layer;

the first insulating layer is arranged between the second resistance layer and the heating section, so that the second resistance layer and the heating section are isolated in the radial direction of the base pipe through the first insulating layer.

In one embodiment, the base pipe is made of an insulating material.

In an embodiment, the substrate tube includes a substrate and a second insulating layer disposed between the substrate and the first and second resistive layers.

In one embodiment, the second insulating layer covers an outer surface of the substrate.

In one embodiment, the second insulating layer is a glaze layer.

In an embodiment, the second resistive layer overlaps at least part of the heat-generating segment in a radial direction of the base pipe.

In one embodiment, the first resistive layer is disposed on an outer surface of the base pipe.

In one embodiment, the first resistive layer is bonded to the outer surface of the base pipe.

In one embodiment, the second resistive layer is disposed on an outer surface of the base pipe.

In one embodiment, the first insulating layer is a glaze layer.

In an embodiment, the second resistor layer includes a third electrode, and the third electrode is electrically connected to the second connection end of the first heating circuit and the second connection end of the second heating circuit.

In an embodiment, the first electrode includes a first electrode region, a first pad region, and a first electrode line region connected between the first electrode region and the first pad region, the first electrode region being electrically connected to a first connection end of the first heat generating line; the second electrode comprises a second electrode region, a second bonding pad region and a second electrode wire region connected between the second electrode region and the second bonding pad region, and the second electrode region is electrically connected with the first connecting end of the second heating circuit.

In an embodiment, the first pad region and the second pad region are located at the same end of the base pipe.

In an embodiment, the first pad region and the second pad region are further away from the opening than the first electrode region and the second electrode region, respectively.

In an embodiment, the third electrode includes two third electrode areas, two third electrode line areas and a third pad area, where the two third electrode areas are electrically connected to the second connection end of the first heating circuit and the second connection end of the second heating circuit, the two third electrode areas are electrically connected through one third electrode line area, and the third pad area is electrically connected with the adjacent third electrode area through another third electrode line area.

In an embodiment, the first electrode includes a first electrode region, a first pad region, and a first electrode line region connected between the first electrode region and the first pad region, the first electrode region being electrically connected to a first connection end of the first heat generating line; the second electrode comprises a second electrode area, a second bonding pad area and a second electrode wire area connected between the second electrode area and the second bonding pad area, the second electrode area is electrically connected with the first connecting end of the second heating circuit, and the first bonding pad area, the second bonding pad area and the third bonding pad area are positioned at the same end of the base body tube.

In an embodiment, the third pad region is further from the opening than the third electrode region.

In an embodiment, the heating element includes a protective layer disposed on a peripheral side of the base pipe, and the first and second resistive layers are located between the base pipe and the protective layer.

In one embodiment, the protective layer is a glaze layer.

In one embodiment, the first resistive layer is made of silver palladium paste.

In an embodiment, the second resistive layer is made of any one or more of platinum, gold, aluminum, copper, titanium, silver, scandium, yttrium, chromium, nickel metal materials.

On the other hand, the application provides an electronic cigarette, which comprises a battery unit and the heating element, wherein the battery unit is electrically connected with the heating element, and the battery unit is used for providing electric energy for the heating element.

In summary, the heating element provided by the present application includes a substrate tube, a first resistor layer, a second resistor layer, and the first insulating layer. The first resistor layer comprises a first heating circuit and a second heating circuit which are arranged along the axial direction of the base tube at intervals, the first heating circuit and the second heating circuit comprise a first connecting end, a second connecting end and a heating section connected between the first connecting end and the second connecting end, the first insulating layer is arranged between the second resistor layer and the heating section, the second resistor layer comprises a first electrode, a second electrode and at least one third electrode, the first electrode and the second electrode are respectively connected with the first heating circuit and the first connecting end of the second heating circuit, the third electrode is electrically connected with the first heating circuit and the second connecting end of the second heating circuit, and the first electrode, the second electrode and the third electrode are used for transmitting electric energy for the first resistor layer. The first insulating layer is used for avoiding short circuit between the first resistance layer and the second resistance layer. The temperature of the heating element can be controlled in different areas by alternatively switching on/off the first heating circuit or the second heating circuit through an external control module. The application provides an electron cigarette includes battery cell and foretell heating member, battery cell with the heating member electricity is connected, battery cell is used for the heating member provides the electric energy, and the cigarette passes through the opening of heating member stretches into the accommodation space of heating member, through control first heating circuit with the second heating circuit alternatively or together the circular telegram generates heat and heats the cigarette to the speed and the stability of effective control aerosol production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a heating element according to an embodiment of the present application;

FIG. 2 is a schematic plan view of the heating element of FIG. 1;

fig. 3 is a schematic overall structure of an electronic cigarette according to an embodiment of the present application.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments that can be used to practice the present application. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms referred to in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions referring to the attached drawings, and thus, directional terms are used for better, more clear description and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprises," "comprising," "includes," "including," "may be" or "including" as used in this application mean the presence of the corresponding function, operation, element, etc. disclosed, but not limited to other one or more additional functions, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

In the technical field of electronic cigarettes, tobacco is heated to a volatilization temperature by a heating element arranged in the electronic cigarette, namely, the tobacco is subjected to heating and non-combustion treatment, so that harmful substances such as tar and the like caused by combustion of the tobacco are avoided. The heating element is used as a core heating element of the electronic cigarette, and the performance of the heating element determines the overall performance and quality level of the electronic cigarette. At present, the electronic cigarettes are generally heated integrally, and the temperature of the heating element cannot be controlled in different areas.

Therefore, the present application aims to provide a heating element, which aims to solve the problem that the heating element in the prior art cannot realize zone heating.

Referring to fig. 1 and 2, a heating element 1 provided in the embodiment of the present application includes a substrate tube 10, a first resistive layer 11, a second resistive layer 12, and a first insulating layer (not shown). An accommodating space (not shown) for accommodating an object to be heated is formed inside the illustrated base pipe 10, and an opening 101 through which the object to be heated passes is opened at one end of the illustrated base pipe 10 in the axial direction thereof. The first resistor layer 11 is disposed outside the base pipe 10, and includes a first heat-generating circuit 111 and a second heat-generating circuit 112 disposed at intervals along an axial direction of the base pipe 10, where the first heat-generating circuit 111 and the second heat-generating circuit 112 each include a first connection end 110a, a second connection end 110b, and a heat-generating section 110c connected between the first connection end 110a and the second connection end 110 b. The base pipe 10 is a heat conducting member, the first resistor layer 11 is made of silver-palladium paste, and when the first connection end 110a and the second connection end 110b are connected with the positive and negative poles of an external power supply, the heating section 110c is conducted to generate heat, and the heat is conducted into the accommodating space through the base pipe 10 to heat the object to be heated. The second resistor layer 12 includes a first electrode 121, a second electrode 122, and a third electrode 123, where the first electrode 121 is electrically connected to the first connection end 110a of the first heat-generating circuit 111, the second electrode 122 is electrically connected to the first connection end 110a of the second heat-generating circuit 112, the third electrode 123 is electrically connected to the second connection end 110b of the first heat-generating circuit 111 and the second connection end 110b of the second heat-generating circuit 112, and the first electrode 121, the second electrode 122, and the third electrode 123 are disposed at intervals, and the second resistor layer 12 is used for being connected to an external power source to transmit electric energy to the first resistor layer 11. The first connection ends 110a of the first heating circuit 111 and the second heating circuit 112 are connected to different electrodes (i.e., the first electrode 111 and the second electrode 112), and the first connection ends 110a of the first heating circuit 111 or the first connection ends 110a of the second heating circuit 112 can be controlled to be connected with an external power source according to requirements to select heating, or can be simultaneously connected to realize simultaneous heating. The first insulating layer is disposed between the second resistive layer 12 and the heat generating section 110c, such that the second resistive layer 12 and the heat generating section 111c are insulated from each other in the radial direction of the base pipe 10 by the first insulating layer, and the first insulating layer is used for avoiding a short circuit between the heat generating section 110c and the second resistive layer 12.

By providing the first insulating layer between the first resistive layer 11 and the heat-generating section 110c, so that the first electrode 121, the second electrode 122, and the third electrode 123 do not need to avoid the heat-generating section 110c, the set lengths of the first heat-generating line 111 and the second heat-generating line 112 may be increased, and in this embodiment, the second resistive layer 12 overlaps at least part of the heat-generating section 110c in the radial direction of the base pipe 10, thereby improving the thermal power of the first heat-generating line 111 and the second heat-generating line 112, and simplifying the heating structure and the electrical extraction structure of the heating element 1.

It should be understood that the second resistive layer 12 overlaps at least a portion of the heat-generating segment 110c in the radial direction of the base pipe 10, as just one embodiment of the present utility model, in other embodiments, the second resistive layer 12 does not overlap the heat-generating segment 110c in the radial direction of the base pipe 10, e.g., the heat-generating segment 110c is completely spaced apart from the second resistive layer 12 to avoid a short circuit therebetween, which is not limiting.

In this embodiment, only one third electrode 123 is provided, so long as the first connection ends 110a of the first heating circuit 111 and the second heating circuit 112 are respectively electrically connected with different electrodes, one heating can be selected, and the second connection ends 110b of the first heating circuit 111 and the second heating circuit 112 are led out from one third electrode 123 together, so that materials can be saved, and wiring and manufacturing processes can be simplified. It should be understood that "the third electrode 123 is electrically connected to the second connection end 110b of the first heat generating circuit 111 and the second connection end 110b of the second heat generating circuit 112" is merely an embodiment of the present utility model, and in other embodiments, two third electrodes 123 may be electrically connected to the third electrode 123 and the second connection end 110b of the first heat generating circuit 111 and the second connection end 110b of the second heat generating circuit 112, respectively, which is not limited to the present utility model, and may be electrically connected to the second connection end 110b of the first heat generating circuit 111 and the second connection end 110b of the second heat generating circuit 112 through at least one third electrode 123, as long as the present utility model includes at least one third electrode 123.

In this embodiment, the second resistive layer 12 is disposed on the outer surface of the base pipe 1, that is, the heating element 1 is substantially the second resistive layer 12, the first insulating layer, and the first resistive layer 11 are sequentially sleeved on the base pipe 10 from inside to outside along the radial direction of the base pipe 10. The second resistor layer 12 is attached to the outer surface of the substrate tube 10, the first insulating layer covers the second resistor layer 12 and exposes a portion of the second resistor layer for electrically connecting with the first connection end 110a, the second connection end 110b and an external power supply of the first resistor layer 11, the first resistor layer 11 is disposed along the circumferential direction of the substrate tube 10 and electrically connected with the portion of the second resistor layer 12 exposed by the first connection end 110a and the second connection end 110b through the first insulating layer, so that the first insulating layer is disposed between the heat generating section 110c and the second resistor layer 12 to prevent the heat generating section 110c from being directly shorted with the second resistor layer 12.

However, the second resistor layer 12 disposed inside affects the first resistor layer 11 disposed outside, resulting in uneven thickness of the first resistor layer 11, or low heat conduction efficiency at the overlapping portion of the first resistor layer 11 and the second resistor layer 12, and affecting heat generation uniformity. In other embodiments, the heating element 1 may be substantially formed of the first resistive layer 11, the first insulating layer, and the second resistive layer 12, and are sequentially sleeved on the base pipe 10 from inside to outside along the radial direction of the base pipe 10. The first resistor layer 11 is disposed on the surface of the substrate tube 10 along the circumferential direction of the substrate tube 10, the first insulating layer covers the first resistor layer 11 and exposes the first connection end 110a and the second connection end 110b, and a portion of the second resistor layer 12 is disposed on the first insulating layer and extends to the first connection end 110a and the second connection end 110b exposed by the first insulating layer, so as to electrically connect the first resistor layer 11 and the second resistor layer 12. The first resistor layer 11 is disposed on the outer surface of the base pipe 10, and the thickness of the first resistor layer 11 (i.e., the first heat-generating line 111 and the second heat-generating line 112) is uniform, so that heat generation is more uniform. The present utility model is not limited to the first resistive layer 11 or the second resistive layer 12 being provided inside, as long as the first insulating layer is provided between the second insulating layer 12 and the heat generating section 113. The first and second heating wires 111 and 112 may be formed by winding a plurality of wires around the base pipe 10, but gaps may exist between the wound plurality of wires and the base pipe 10, so that the overall size of the heating member 1 is large and the heat conduction efficiency between the first and second heating wires 111 and 112 and the base pipe 10 is affected, preferably, the first resistance layer 11 is bonded to the outer surface of the base pipe 10, that is, the first resistance layer 11 is formed on the outer surface of the base pipe 10 by printing or depositing, etc., so that no gaps exist between the first resistance layer 11 (including the first and second heating wires 111 and 112) and the base pipe 10, the size of the heating member 1 is smaller, the first and second heating wires 111 and 112 are closely adhered to the base pipe 10, the heat conduction efficiency is higher, and the first and second heating wires 111 and 112 may be made thinner and the heat generation efficiency is higher.

In this embodiment, the base pipe 10 is made of an insulating material, for example, an alumina material, which has good insulating properties and can prevent different heat generating wires from being shorted through the base pipe 10.

Preferably, the substrate tube 10 has better insulation performance and thermal conductivity, the substrate tube 10 includes a substrate (not shown) and a second insulation layer (not shown), the substrate is in a cylindrical tube shape, and the second insulation layer covers the outer surface of the substrate tube 10 and is attached to the surface of the substrate tube 10, so that the second insulation layer is disposed between the substrate and the first resistance layer 11, and between the substrate and the second resistance layer 12, and the substrate may be made of metal with good thermal conductivity such as copper, aluminum, and is favorable for conducting heat generated by the first resistance layer 11 to the accommodating space. The second insulating layer has good insulating property and can be a glaze layer. Specifically, for example, the second insulating layer may be glass glaze formed by grinding mineral raw materials and raw materials according to a certain proportion to obtain glaze slurry, and calcining at a certain temperature. It will be appreciated that the second insulating layer may provide insulation between the second resistive layer 12 and the substrate.

In this embodiment, the substrate tube 10 has both good insulating properties and good heat conducting properties by covering the substrate with the second insulating layer having good heat conducting properties, it should be understood that the second insulating layer covers the outer surface of the substrate as only one embodiment of the present utility model, and in other embodiments, it is not necessary that the second insulating layer covers the outer surface of the substrate entirely, as long as the areas where the first and second resistive layers 11 and 12 are disposed are covered, so that the second insulating layer is disposed between the substrate and the first and second resistive layers 11 and 12, and the first and second resistive layers 11 and 12 are prevented from being shorted with the substrate.

In this embodiment, the substrate and the second insulating layer are preferably a metal having good heat conduction property and a glaze layer having good insulating property, respectively, but these are only preferred embodiments of the present utility model, and the present utility model is not limited thereto, as long as the substrate has good heat conduction property and the second insulating layer has good insulating property.

In this embodiment, the first resistive layer 11 of the heating element 1 includes a first heating circuit 111 and a second heating circuit 112, and correspondingly, the second resistive layer 12 includes a first electrode 121, a second electrode 122, and at least one third electrode 123, and when the heating element 1 works, different heating modes may be provided according to actual heating requirements, specifically, the first heating circuit 111 and the second heating circuit 112 may heat simultaneously to form two corresponding heating areas, or alternatively heat to form a corresponding single heating area. It should be understood that the number of the heat-generating lines included in the first resistive layer 11 is not limited in the present utility model, the number of the heat-generating lines included in the first resistive layer 11 may be 2 to 10, for example, 2, 3, 4, 6, 8, 9, 10, or other number of the heat-generating lines, and accordingly, the number of the electrodes included in the second resistive layer 12 may be 3 to 11, for example, 3, 5, 6, 7, 9, 10, 11, or other number of the electrodes included in the second resistive layer 12, and when the heating element 1 is operated, any one of the plurality of heat-generating lines of the heating element 1 may be heated to form a heating area according to actual heating requirements, or any plurality of the heat-generating lines of the heating element 1 may be heated to form a corresponding number of heating areas at the same time.

In this embodiment, the first electrode 121, the second electrode 122, and the third electrode 123 extend along the axial direction of the base pipe 10, and are not in contact with each other. The first electrode 121 includes a first electrode region 121a, a first pad region 121b, and a first electrode line region 121c connected between the first electrode region 121a and the first pad region 121b, the first electrode region 121a being electrically connected to the first connection end 110a of the first heat generating line 111, the first pad region 121b being for electrical connection to an external power source, the first pad region 121b being disposed at an end of the base pipe 10 remote from the opening 101; the second electrode 122 includes a second electrode region 122a, a second pad region 122b, and a second electrode line region 122c connected between the second electrode region 122a and the second pad region 122b, the second electrode region 122a being electrically connected to the second connection end 110a of the second heat generating wire 111, the second pad region 122b being for electrical connection to an external power source, the second pad region 122b being disposed at an end of the base pipe 10 remote from the opening 101; the third electrode 123 includes two third electrode areas 123a, two third electrode line areas 123c, and a third pad area 123b, where the two third electrode areas 123a are electrically connected to the second connection end 110b of the first heat generating line 111 and the second connection end 110b of the second heat generating line 112, the two third electrode areas are electrically connected to each other through one third electrode line area 123c, the third pad area 123b is electrically connected to an adjacent third electrode area 123a through another third electrode line area 123c, the third pad area 123b is electrically connected to an external power source, and the third pad area 123b is disposed at an end of the base tube 10 away from the opening 101. The first pad area 121b and the second pad area 122b are electrically connected to the same pole (e.g., positive pole) of the external power source, the third pad area 123b is electrically connected to the other pole (e.g., negative pole) of the external power source, and by disposing the first pad area 121b, the second pad area 122b and the third pad area 123b at the end of the base pipe 10 away from the opening 101, it is possible to avoid that the opening 101 is blocked by the subsequent routing and other structures and the object to be heated is blocked from entering the accommodating space, and the same ends of the first pad area 121b, the second pad area 122b and the third pad area 123b are led out to be conveniently connected to the external power source, so that the subsequent routing is simplified.

In this embodiment, the first pad area 121b, the second pad area 122b, and the third pad area 123b are located at an end of the substrate tube 10 away from the opening 101, but this is only an embodiment of the present utility model, and in other embodiments, the first pad area 121b, the second pad area 122b, and the third pad area 123b need not be disposed at an end of the substrate tube 10, so long as the first pad area 121b, the second pad area 122b, and the third pad area 123b are respectively located at an end of the substrate tube away from the opening 101, and the same end of the substrate tube is led out by soldering wires, so long as the first electrode area 121a, the second electrode area 122a, and the third electrode area 123a are respectively located at an end of the substrate tube, so as to avoid shielding the opening 101.

It should be understood that the first pad area 121b, the second pad area 122b, and the third pad area 123b are located at the same end of the substrate tube 10, and the present utility model is not limited to a specific location of the first pad area 121b, the second pad area 122b, and the third pad area 123b, as long as an electrical connection with an external power source can be achieved, for example, the first pad area 121b and the second pad area 122b are located at the same end of the substrate tube 10, and the third pad area 123b is located at the other end of the substrate tube 10. In this embodiment, the heating element 1 further includes a plurality of conductive wires 15, for example, three conductive wires 15, and the three conductive wires 15 are soldered to and electrically connected to the first pad region 121b, the second pad region 122b, and the third pad region 123b, respectively, so as to serve as an electrical lead-out element for electrical connection to an external power source. It should be understood that the electrical connection between the conductive wire 15 and the pad area is merely an embodiment of the present utility model, and in other embodiments, the first electrode 121, the second electrode 122, or the third electrode 123 may not be provided with the first pad area 121b, the second pad area 122b, or the third pad area 123b, and the conductive wire 15 may be electrically connected to any portion of the first electrode 121, the second electrode 122, or the third electrode 123.

In this embodiment, the heating element 1 includes a protective layer (not shown) disposed on the peripheral side of the base pipe 10, and the protective layer is attached to the first resistive layer 11, the second resistive layer 12, and the peripheral side of the base pipe 10, such that the first resistive layer 11, the second resistive layer 12 are located between the base pipe 10 and the protective layer to protect the first resistive layer 11 and the second resistive layer 12.

In this embodiment, the protective layer may be a glaze layer. For example, the protective layer can be glass glaze which is prepared by grinding mineral raw materials and raw materials according to a certain proportion to prepare glaze slurry and calcining at a certain temperature, and has better insulating property.

In this embodiment, the second resistive layer 12 may be made of any one or more of platinum (Pt), gold (Au), aluminum (Al), copper (Cu), titanium (Ti), silver (Ag), scandium (Sc), yttrium (Y), chromium (Cr), nickel (Ni), and the like.

In summary, the heating element 1 provided in the embodiment of the present application includes the substrate tube 10, the first resistor layer 11, the second resistor layer 12, and the first insulating layer. The first resistor layer 11 includes a first heat-generating line 111 and a second heat-generating line 112 that are disposed at intervals along an axial direction of the substrate tube 10, the first heat-generating line 111 and the second heat-generating line 112 each include a first connection end 110a, a second connection end 110b, and a heat-generating section 110c that is connected between the first connection end 110a and the second connection end 110b, the first insulating layer is disposed between the second resistor layer 12 and the heat-generating section 110c, the second resistor layer 12 includes a first electrode 121, a second electrode 122, and at least one third electrode 123, the first electrode 121, the second electrode 122 are electrically connected with the first connection ends 110a of the first heat-generating line 111 and the second heat-generating line 112, respectively, the third electrode 123 is electrically connected with the second connection ends 110b of the first heat-generating line 111 and the second heat-generating line 112, and the first electrode 121, the second electrode 122, and the third electrode 123 are used for transmitting electric energy to the first resistor layer 11. The first insulating layer is used to avoid a short circuit between the first resistive layer 11 and the second resistive layer 12. The temperature of the heating element 1 can be controlled in different areas by alternatively switching on/off the first heating circuit 111 or the second heating circuit 112 through an external control module, so that the speed and stability of smoke generation can be effectively controlled.

Based on the same concept, for the heating element 1, the embodiment of the application further provides an electronic cigarette, as shown in fig. 3, where the electronic cigarette includes a battery unit 2 and the heating element 1, the battery unit 2 is electrically connected with the heating element 1, and the battery unit 2 is used to provide electric energy for the heating element 1. The heating element 1 can be electrically connected with the battery unit 2 through the lead 15 and the main board 3, the cigarette 4 stretches into the accommodating space of the heating element 1 through the opening 101 of the heating element 1, and the first heating circuit 111 and the second heating circuit 112 are electrified to heat so as to heat the cigarette 4, so that aerosol is formed for a user to inhale.

In this embodiment, the electronic cigarette may further include a control component for adjusting the temperature of the heating element 1. In one embodiment, the electronic cigarette further comprises a charging interface for charging the battery unit 2 so that the battery unit 2 stores electrical energy. The application only lists the structures related to the utility model, and those skilled in the art can correspondingly supplement the structures according to the specific type and actual functions of the electronic cigarette, which are not described herein.

The flow chart described in the present application is merely one embodiment, and many modifications may be made to this illustration or to the steps in the present application without departing from the spirit of the present application. For example, the steps may be performed in a differing order, or steps may be added, deleted or modified. Those skilled in the art will recognize that the implementations of all or part of the procedures described in the embodiments described above and in accordance with the equivalent arrangements of the claims are within the scope of the present application.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by a person skilled in the art from the above description, all of which modifications and variations are intended to fall within the scope of the claims appended hereto. Those skilled in the art will recognize that the methods of accomplishing all or part of the above embodiments and equivalents thereof may be employed and still fall within the scope of the present application.

Claims (22)

1. A heating element, comprising:

a base tube, in which an accommodating space for accommodating an object to be heated is formed, and an opening through which the object to be heated passes is formed at one end of the base tube in the axial direction;

the first resistor layer comprises a first heating circuit and a second heating circuit which are arranged at intervals along the axial direction of the base tube, wherein the first heating circuit and the second heating circuit comprise a first connecting end, a second connecting end and a heating section connected between the first connecting end and the second connecting end;

the second resistor layer comprises a first electrode, a second electrode and at least one third electrode, wherein the first electrode is electrically connected with the first connecting end of the first heating circuit, the second electrode is electrically connected with the first connecting end of the second heating circuit, the at least one third electrode is electrically connected with the second connecting end of the first heating circuit and the second connecting end of the second heating circuit, the first electrode, the second electrode and the third electrode are arranged at intervals, and the second resistor layer is used for transmitting electric energy for the first resistor layer;

the first insulating layer is arranged between the second resistance layer and the heating section, so that the second resistance layer and the heating section are isolated in the radial direction of the base pipe through the first insulating layer.

2. The heating element of claim 1, wherein said base pipe is made of an insulating material.

3. The heating element of claim 1, wherein the substrate tube comprises a substrate and a second insulating layer disposed between the substrate and the first and second resistive layers.

4. A heating element as claimed in claim 3, wherein the second insulating layer covers the outer surface of the substrate.

5. A heating element as claimed in claim 3, wherein the second insulating layer is a glazing layer.

6. The heating element of claim 1, wherein the second resistive layer overlaps at least a portion of the heat-generating segment in a radial direction of the base pipe.

7. The heating element of claim 1, wherein the first resistive layer is disposed on an outer surface of the base pipe.

8. The heating element of claim 7 wherein said first resistive layer is bonded to an outer surface of said base pipe.

9. The heating element of claim 1, wherein said second resistive layer is disposed on an outer surface of said base pipe.

10. The heating element of claim 1 wherein said first insulating layer is a glaze layer.

11. The heating element of claim 1, wherein said second resistive layer comprises a third electrode electrically connected to both said second connection end of said first heat generating circuit and said second connection end of said second heat generating circuit.

12. The heating element of claim 11, wherein the first electrode comprises a first electrode region, a first pad region, and a first electrode wire region connected between the first electrode region and the first pad region, the first electrode region being electrically connected to a first connection end of the first heat generating wire; the second electrode comprises a second electrode region, a second bonding pad region and a second electrode wire region connected between the second electrode region and the second bonding pad region, and the second electrode region is electrically connected with the first connecting end of the second heating circuit.

13. The heating element of claim 12, wherein said first land area and said second land area are located at the same end of said substrate tube.

14. The heating element of claim 12, wherein the first pad region and the second pad region are further away from the opening than the first electrode region and the second electrode region, respectively.

15. The heating element of claim 11, wherein the third electrode comprises two third electrode regions, two third electrode line regions and a third pad region, wherein the two third electrode regions are respectively electrically connected with the second connection end of the first heating circuit and the second connection end of the second heating circuit, the two third electrode regions are electrically connected through one third electrode line region, and the third pad region is electrically connected with the adjacent third electrode region through the other third electrode line region.

16. The heating element of claim 15, wherein the first electrode comprises a first electrode region, a first pad region, and a first electrode wire region connected between the first electrode region and the first pad region, the first electrode region being electrically connected to a first connection end of the first heat generating wire; the second electrode comprises a second electrode area, a second bonding pad area and a second electrode wire area connected between the second electrode area and the second bonding pad area, the second electrode area is electrically connected with the first connecting end of the second heating circuit, and the first bonding pad area, the second bonding pad area and the third bonding pad area are positioned at the same end of the base body tube.

17. The heating element of claim 15, wherein said third pad region is remote from said opening compared to said third electrode region.

18. The heating element of claim 1, wherein the heating element comprises a protective layer disposed on a peripheral side of the base pipe, the first resistive layer and the second resistive layer being located between the base pipe and the protective layer.

19. The heating element of claim 18 wherein said protective layer is a glaze layer.

20. A heating element according to any one of claims 1 to 19, wherein the first resistive layer is made of silver palladium paste.

21. A heating element according to any one of claims 1 to 19, wherein the second resistive layer is made of any one of platinum, gold, aluminium, copper, titanium, silver, scandium, yttrium, chromium, nickel metal materials.

22. An electronic cigarette comprising a battery unit and a heating element according to any one of claims 1-21, the battery unit being electrically connected to the heating element, the battery unit being configured to provide electrical energy to the heating element.

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