Packaging structure of integrated heater for electronic cigarettes

Abstract

The present invention relates to the technical field of electronic cigarettes, and specifically relates to a packaging structure of an integrated heater for electronic cigarettes. The packaging structure comprises a heating tube, a first heat-insulating positioning tube, a second heat-insulating positioning tube, a first Teflon heat-shrinkable tube, a temperature measuring element and a heat-insulating sleeve, wherein the heating tube is clamped between the first heat-insulating positioning tube and the second heat-insulating positioning tube, and the three tubes are connected by means of heat shrinkage of the first Teflon heat-shrinkable tube; the temperature measuring element is arranged on an outer wall of the heating tube and bound and fixed by the first Teflon heat-shrinkable tube; and the heat-insulating sleeve is sleeved on the first Teflon heat-shrinkable tube and fixedly connected to the first heat-insulating positioning tube and the second heat-insulating positioning tube. The packaging structure of an integrated heater for electronic cigarettes that is provided in the present invention can flexibly adjust a heating area on the basis of the position of cut tobacco of a cigarette, and utilizes multi-layer heat insulation, thus achieving a good heat insulation effect, fast heating speed, and low power consumption of products; moreover, the packaging structure also has the characteristics of fast response speed, precise temperature control, etc., and can also reduce harm to human health.

Description

Packaging structure of electronic cigarette integrated heater TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic cigarettes, in particular to a packaging structure of an electronic cigarette integrated heater. BACKGROUND

[0002] A heating non-combustion (HNB) electronic cigarette, which heats and bakes a cigarette at a low temperature of 200-300 degrees Celsius, releases nicotine and tobacco tar, and does not produce many harmful substances compared with tobacco burned by open flame, reduces harm to the body, and can also obtain similar tobacco flavor and taste to traditional cigarettes.

[0003] Early HNB electronic cigarettes use inner core heaters, represented by the first generation of ceramic pin heaters of Philip IQOS, and many structures of electronic cigarette inner core heaters have been derived in the market, including sheet type stainless steel pin structure, sheet type ceramic pin structure, columnar stainless steel pin structure and columnar ceramic pin structure, etc. Although the electronic cigarette with inner core heater has low energy consumption, the inner core of the cigarette is not uniformly heated, which easily causes black core state and affects the taste; in addition, the heating pin is difficult to clean and is easy to break.

[0004] With the development of HNB electronic cigarettes, Philip has launched a new generation of IQOS ILUMA electronic cigarette, which wraps a metal sheet in a cigarette and then heats the metal sheet through electromagnetic induction. Although it has fast heating speed and good taste, it does not need to clean the pin and is not easy to damage, but this kind of heating principle of electromagnetic induction needs to be matched with special cigarette containing metal sheet, which has high technical and patent barriers, and forms a monopoly in the market.

[0005] In recent years, there have been peripheral heating structures in the market, which replace the pin heating structure, including metal tube electromagnetic heating structure, tube wall wire resistance heating structure, ceramic / metal tube coating heating structure, etc. The peripheral heating can fully heat the cigarette, has good taste, does not need to be cleaned frequently and is not easy to be damaged, but also has problems such as fast heat dissipation, high energy consumption, difficult packaging of temperature measuring elements, which greatly affects the product use experience of users.

[0006] In the existing peripheral heating structure, the heating pipe is generally thick-walled and directly bonded in the smoking set shell, and then wrapped with thermal insulation cotton for heat insulation. This kind of packaging structure has some problems: 1. The height position of the heating pipe is fixed, and the heating area cannot be flexibly changed according to the position of tobacco in the cigarette; 2. The heat insulation effect is poor, the heating efficiency is low, and the power consumption is high only by using thermal insulation cotton for heat insulation; 3. The temperature measuring element is also wrapped in the thermal insulation cotton, which is not in close contact with the pipe wall of the heating pipe, has poor heat conduction, slow response, and difficult temperature control; 4. The use of a large amount of bonding glue and thermal insulation cotton will also produce some harmful substances during work, which will harm human health. TECHNICAL PROBLEM

[0007] To solve the technical problems of the existing packaging structure of the HNB electronic cigarette peripheral heater, such as the inability to flexibly change the heating area, poor heat insulation, high power consumption, difficult temperature control, difficult packaging, and harm to health, the present application provides a packaging structure of an electronic cigarette integrated heater, which can flexibly adjust the heating area according to the position of tobacco in the cigarette, has good heat insulation effect, fast heating speed, low product power consumption, fast response speed, accurate temperature control, and can reduce the harm to human health. TECHNICAL SOLUTION

[0008] Technical scheme of the present application:

[0009] A packaging structure of an electronic cigarette integrated heater, comprising a heating pipe, a first heat insulation positioning pipe, a second heat insulation positioning pipe, a first Teflon heat shrink tube, a temperature measuring element and a heat insulation sleeve pipe, wherein,

[0010] The heating pipe is clamped between the first heat insulation positioning pipe and the second heat insulation positioning pipe, the first heat insulation positioning pipe, the heating pipe and the second heat insulation positioning pipe are connected as a whole by the first Teflon heat shrink tube, and the first heat insulation positioning pipe, the heating pipe and the second heat insulation positioning pipe are coaxial, and the temperature sensing part of the temperature measuring element is located on the outer surface of the heating pipe and is fixed by the first Teflon heat shrink tube;

[0011] The heat insulation sleeve pipe is sleeved on the first Teflon heat shrink tube and covers the first heat insulation positioning pipe, the heating pipe and the second heat insulation positioning pipe, and the heat insulation sleeve pipe is fixedly connected with the first heat insulation positioning pipe and the second heat insulation positioning pipe; the outer diameter of the first heat insulation positioning pipe and the second heat insulation positioning pipe is greater than the outer diameter of the heating pipe, so as to form a heat insulation cavity between the heat insulation sleeve pipe and the heating pipe.

[0012] Further, the packaging structure further comprises a second Teflon heat shrink tube, the second Teflon heat shrink tube is sleeved on the heat insulation sleeve pipe, and the heat insulation sleeve pipe is heat-shrunkly connected with the first heat insulation positioning pipe and the second heat insulation positioning pipe through the second Teflon heat shrink tube.

[0013] Further, the packaging structure further comprises a heat insulation silica gel pad, the heat insulation silica gel pad is sleeved on the second Teflon heat shrink tube, and covers at least the entire heating tube.

[0014] Further, the heating tube is a thin-walled heating tube; the heating tube comprises a tube body and a heating coating wrapped on the tube body, and the wall thickness of the tube body is less than 0.3 mm.

[0015] Further, the heating coating comprises an insulation layer and a heating resistance layer, the insulation layer is wrapped on the outer surface of the tube body, and the heating resistance layer is wrapped on the outer surface of the insulation layer.

[0016] Further, the heating tube lead wire is connected to the heating resistance layer, and the heating tube lead wire is led out from between the first Teflon heat shrink tube and the second heat insulation positioning tube or from between the first Teflon heat shrink tube and the first heat insulation positioning tube.

[0017] Further, the cable of the temperature measuring element is led out from between the first Teflon heat shrink tube and the second heat insulation positioning tube or from between the first Teflon heat shrink tube and the first heat insulation positioning tube.

[0018] Further, the inner diameters of the first heat insulation positioning tube, the heating tube and the second heat insulation positioning tube are the same, the first heat insulation positioning tube, the heating tube and the second heat insulation positioning tube are first kept coaxial by an auxiliary tool, and then the first Teflon heat shrink tube is sleeved on the first heat insulation positioning tube, the heating tube and the second heat insulation positioning tube to perform heat shrink connection.

[0019] Further, the tube body of the heating tube is a metal tube; the first heat insulation positioning tube, the second heat insulation positioning tube and the heat insulation sleeve are glass tubes, quartz tubes, plastic tubes, ceramic tubes or metal tubes; and the heat insulation silica gel pad is a foamed silica gel pad. Advantages

[0020] By adopting the above technical solution, the encapsulation structure of the integrated heater for electronic cigarettes provided by the present invention has the following advantages compared with the prior art: The encapsulation structure of the integrated heater for electronic cigarettes provided by the present invention, by setting a first heat-insulating positioning tube and a second heat-insulating positioning tube at both ends of the heating tube, allows for flexible adjustment of the length of the first and second heat-insulating positioning tubes according to the position of the tobacco in the cigarette, thereby flexibly changing the height position of the heating tube in the cigarette device. This allows for flexible adjustment of the heating area, adapting to various cigarette types without requiring a redesign of the cigarette device structure. Furthermore, the present invention uses a first Teflon heat-shrink tubing to fix the first heat-insulating positioning tube, the heating tube, and the second heat-insulating positioning tube. The concentricity of the first heat-insulating positioning tube, the heating tube, and the second heat-insulating positioning tube is ensured after the first Teflon heat-shrink tubing shrinks in the same direction. This also effectively binds the temperature sensing element to the outer wall of the heating tube, ensuring the temperature sensing element is in close contact with the heating tube, resulting in more accurate temperature measurement, rapid response, and precise temperature control. It also avoids the health hazards associated with encapsulation using adhesives and insulation cotton. In addition, the present invention greatly improves the heat insulation effect by using multiple heat insulation measures such as the first Teflon heat shrink tubing, the heat insulation sleeve and the heat insulation cavity between the first Teflon heat shrink tubing, and the heat insulation sleeve, ensuring that the temperature of the smoke appliance shell meets the requirements; and it also makes the heating efficiency high and the power consumption low. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the overall structure of the electronic cigarette device of the present invention;

[0022] Figure 2 is an exploded view of the structure of the electronic cigarette device of the present invention;

[0023] Figure 3 is a schematic diagram of the overall structure of the packaging structure of the electronic cigarette integrated heater of the present invention;

[0024] Figure 4 is a schematic diagram of the heating tube of the present invention;

[0025] Figure 5 is a schematic diagram of the structure of the first heat-insulating positioning tube of the present invention;

[0026] Figure 6 is a schematic diagram of the structure of the second heat-insulating positioning tube of the present invention;

[0027] Figure 7 is a schematic diagram of the auxiliary tooling of the present invention;

[0028] Figure 8 is a schematic diagram of the structure of the first Teflon heat shrink tubing of the present invention;

[0029] Figure 9 is a schematic diagram of the structure of the heat insulation sleeve of the present invention;

[0030] Figure 10 is a schematic diagram of the structure of the second Teflon heat shrink tubing of the present invention;

[0031] Figure 11 is a schematic diagram of the structure of the heat-insulating silicone pad of the present invention.

[0032] in,

[0033] Heating pipe 1, pipe body 11, heating coating 12, strip-shaped notch 121, heating pipe lead 13, first heat insulation positioning pipe 2, second heat insulation positioning pipe 3, first Teflon heat shrink tube 4, auxiliary tooling 5, temperature measuring element 6, heat insulation sleeve 7, second Teflon heat shrink tube 8, heat insulation silica gel pad 9;

[0034] Electronic cigarette 100, packaging structure 101, first shell 102, clamping part 1021, clamping edge 1022;Second shell 103, button 1031;First cover 104;Second cover 105. Best mode of the present application

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0037] In addition, it should be noted that the use of the terms "first", "second" and the like to qualify parts is only for the convenience of distinguishing the corresponding parts, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0038] As shown in FIGS. 1-11, the present embodiment provides a packaging structure 101 of an HNB electronic cigarette integrated heater, which comprises a heating pipe 1, a first heat insulation positioning pipe 2, a second heat insulation positioning pipe 3, a first Teflon heat shrink tube 4, a temperature measuring element 6 and a heat insulation sleeve 7.

[0039] The heating pipe 1 is clamped between the first heat insulation positioning pipe 2 and the second heat insulation positioning pipe 3, that is, the first heat insulation positioning pipe 2 and the second heat insulation positioning pipe 3 are respectively arranged at the first end and the second end of the heating pipe 1. The first Teflon heat shrink tube 4 is further sleeved on the first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3. After being heated, the first Teflon heat shrink tube 4 is tightened to connect the first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3 into an integral whole, and to make the heating pipe 1, the first heat insulation positioning pipe 2 and the second heat insulation positioning pipe 3 coaxial. Preferably, the inner diameters of the first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3 are the same, as shown in FIG. 7. By means of an auxiliary tool 5, for example, a simple long round rod, or other tools with different inner diameters, the first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3 are pre-strung together to keep them coaxial, that is, to keep a certain concentricity, and then the three are axially in close contact, and then the first Teflon heat shrink tube 4 is sleeved on the three to be heat-shrunk and connected. Thus, the concentricity requirement of the first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3 is guaranteed, the assembly is simple, and the assembly precision is high. The first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3 are all hollow pipes, and spaces for inserting cigarettes are formed in the interiors thereof. After the cigarettes are inserted, the positions of the tobacco of the cigarettes should be just located in the heating area of the heating pipe 1.

[0040] Further, as shown in FIGS. 7-8, the temperature measuring element 6 is used to measure the temperature of heating, which can be but is not limited to a thermocouple wire, an ntc with a lead wire and a platinum film thermistor with a lead wire, and preferably is a thermocouple wire. The principle is to measure the temperature by means of a closed loop composed of two conductors with different materials, which has the characteristics of high measurement precision, large measurable range and stable operation. The temperature sensing part of the temperature measuring element 6 is located on the outer surface of the heating pipe 1 and is fixed on the outer surface of the heating pipe 1 by the first Teflon heat shrink tube 4, so that the temperature sensing part is in close contact with the heating pipe 1, has good heat conduction and fast response, and is convenient for accurate temperature control.

[0041] Further, as shown in FIGS. 9-10, the heat insulation sleeve 7 is sleeved on the first Teflon heat shrink tube 4 and covers the first heat insulation positioning pipe 2, the heating pipe 1 and the second heat insulation positioning pipe 3, that is, the heat insulation sleeve 7 completely covers the periphery of the heating pipe 1, and extends to cover a part of the periphery of the first heat insulation positioning pipe 2 and the second heat insulation positioning pipe 3. The heat insulation sleeve 7 can be fixedly connected with the first heat insulation positioning pipe 2 and the second heat insulation positioning pipe 3 by means of high-temperature glue or the like. The outer diameters of the first heat insulation positioning pipe 2 and the second heat insulation positioning pipe 3 are preferably the same and are greater than the outer diameter of the heating pipe 1, so that a heat insulation cavity (not shown in the figure) is formed between the heat insulation sleeve 7 and the heating pipe 1, preventing heat from being dissipated outward, thereby improving the heating efficiency and reducing the power consumption.

[0042] The first heat insulation positioning tube 2, the second heat insulation positioning tube 3 and the heat insulation sleeve 7 can be, but are not limited to, glass tubes, quartz tubes, plastic tubes, ceramic tubes or metal tubes, preferably made of materials with good high-temperature resistance and thermal stability. The first Teflon heat shrink tube 4 is made of Teflon, i.e., polytetrafluoroethylene (PTFE), which has the characteristics of high-temperature resistance, good thermal stability, corrosion resistance, etc.

[0043] In this way, the packaging structure 101 of the integrated heater of the electronic cigarette provided in the embodiment, compared with the prior art, firstly, in the prior art, the heating tube is generally directly fixed in the shell of the smoking set by means of adhesive bonding or the like. This packaging method makes it only suitable for specific cigarettes, and when the position of tobacco in the cigarette changes, the height position of the heating tube needs to be adjusted, which requires changes to the structure of the shell of the smoking set and re-tooling, which is very costly. Moreover, the position of tobacco and the length of the area of tobacco in the cigarette developed by each manufacturer are different, so the adaptability of the existing packaging structure is poor. In the embodiment, the first heat insulation positioning tube 2 and the second heat insulation positioning tube 3 can be flexibly changed in length to adjust the position of the heating tube 1, i.e., flexibly adjust the heating area to adapt to different cigarettes, so as to ensure the best heating effect without the need for re-tooling, and the adaptability is good. Moreover, the first heat insulation positioning tube 2 and the second heat insulation positioning tube 3 can play the role of heat insulation and structure reinforcement at both ends.

[0044] Secondly, the first Teflon heat shrink tube 4 is used to heat-shrink connect the first heat insulation positioning tube 2, the heating tube 1 and the second heat insulation positioning tube 3, so as to tightly connect them to form a whole. Before heat shrinkage, the first heat insulation positioning tube 2, the heating tube 1 and the second heat insulation positioning tube 3 are kept concentric by means of auxiliary tooling, and then heat shrinkage connection is performed. This connection method is convenient to assemble, and does not need to use adhesive bonding, thereby reducing the health hazards caused by adhesive.

[0045] Moreover, in the embodiment, the temperature sensing part of the temperature measuring element 6 is located on the outer surface of the heating tube 1 and is fixed tightly on the outer surface of the heating tube 1 by the first Teflon heat shrink tube 4. Compared with the fixing method by using thermal insulation cotton and adhesive in the prior art, the temperature sensing part of the temperature measuring element 6 is in close contact with the heating tube 1, has good heat conduction and fast response, and is convenient for accurate temperature control. Moreover, the thermal insulation cotton and adhesive are not used, thereby reducing the health hazards to the human body.

[0046] In addition, in the embodiment, multiple heat insulation measures such as the first Teflon heat shrink tube 4, the heat insulation sleeve 7 and the heat insulation cavity formed between the heat insulation sleeve 7 and the first Teflon heat shrink tube 4 are provided, so as to greatly improve the heat insulation effect, improve the heating efficiency and reduce the power consumption of the product.

[0047] Preferably, as shown in FIG. 10, the packaging structure 101 of the present embodiment further comprises a second Teflon heat shrink tube 8, which is sleeved on the heat insulation sleeve 7, and the heat insulation sleeve 7 is heat-shrunkly connected through the second Teflon heat shrink tube 8 to form a new whole with the first heat insulation positioning tube 2, the heating tube 1, the second heat insulation positioning tube 3 and the first Teflon heat shrink tube 4. The second Teflon heat shrink tube 8 is made of Teflon material, has the characteristics of high temperature resistance, good thermal stability, corrosion resistance and the like, has better temperature resistance effect than high temperature glue, is healthier, and can further play a heat insulation role. In addition, the second Teflon heat shrink tube 8 and the heat insulation sleeve 7 can also play a role in assisting the stability of the structure when the first Teflon heat shrink tube 4 is heated to the softening point. Through the size setting, the heat insulation sleeve 7 can maintain a certain coaxiality with the heating tube 1 after being sleeved on the first Teflon heat shrink tube 4, and preferably, the auxiliary tool 5 is also inserted when the heat insulation sleeve 7 is fixed, to prevent the second Teflon heat shrink tube 8 from affecting the coaxiality of the first heat insulation positioning tube 2, the heating tube 1 and the second heat insulation positioning tube 3 when it shrinks.

[0048] Further, as shown in FIG. 11, the packaging structure 101 of the present embodiment further comprises a heat insulation silica gel pad 9, which is sleeved on the second Teflon heat shrink tube 8 corresponding to the processing hole. The thickness and number of the heat insulation silica gel pad 9 can be set according to the needs, but at least the entire heating tube 1 needs to be covered. Preferably, the heat insulation silica gel pad 9 in the present embodiment covers the periphery of the heating tube 1, and also extends to a part of the periphery of the first heat insulation positioning tube 2 and the second heat insulation positioning tube 3, effectively reducing the heat dissipation to the outside. The heat insulation silica gel pad 9 is preferably a foamed silica gel pad. Although the heat insulation sleeve 7 has a certain heat insulation effect, the temperature of the tube wall may still exceed 100 degrees Celsius. In the present embodiment, a layer of foamed silica gel is additionally arranged on the periphery, and the thermal conductivity coefficient of the foamed silica gel is about 0.06 W / mk, which can realize that the periphery temperature is lower than 50 degrees Celsius, greatly improve the heat insulation effect, improve the heating effect, reduce the power consumption, and also meet the temperature requirement of the electronic cigarette shell, be comfortable to hold, and prevent scalding.

[0049] In this way, the packaging structure 101 of the electronic cigarette integrated heater in the present embodiment is formed as a whole, which can be directly installed in the electronic cigarette, and even if the bonding method is used, the glue is far away from the heating tube 1, and it is not easy to generate harmful substances by heating.

[0050] Preferably, the packaging structure 101 of the electronic cigarette integrated heater in the embodiment can be directly clamped in the cigarette holder shell without using glue for bonding, and is convenient to assemble. As shown in FIGS. 1-2, the electronic cigarette holder 100 includes a shell including a first shell 102, a second shell 103, and first and second cover bodies 104 and 105. The first shell 102 is formed with a clamping portion 1021 for clamping the packaging structure 101. Specifically, the first shell 102 is open at the front side, and a clamping edge 1022 in a quadrangular arrangement is formed at the upper left side of the first shell 102 for clamping the packaging structure 101, specifically for clamping the heat-insulating silica gel pad 9. The heat-insulating silica gel pad 9 has a certain elasticity and can tightly grip the overall tubular structure inside, or can be fixed with the overall tubular structure inside by high-temperature glue. The top and bottom of the first shell are also open, the second shell 103 is a long rectangular sleeve structure, and the first and second cover bodies 104 and 105 are clamped or installed by screws at both ends after being sleeved on the first shell 102. The first shell 102 is also provided with a circuit board, a battery and other components, and the second shell 103 is also provided with a button 1031 for operation.

[0051] The cigarette of the electronic cigarette generally includes a mouthpiece, a buffer and tobacco. When the cigarette is heated, the tobacco in the cigarette needs to be heated, that is, the position of the heating tube 1 needs to be located at the position of the tobacco after the cigarette is inserted, so that the tobacco can be effectively heated. In the prior art, when the position of the tobacco needs to be changed due to the need for setting the suction resistance or other reasons, the position of the heating tube 1 cannot be adaptively adjusted, and the cigarette holder shell needs to be re-designed and opened, which is high in cost. In the embodiment, only the length of the first and / or second heat-insulating positioning tubes 2 and 3 needs to be adaptively changed, so that the position of the heating tube 1 corresponds to the position of the tobacco in the new cigarette after insertion, which is better in adaptability, and is convenient and low in cost to change without the need for re-designing the cigarette holder structure and opening the mold.

[0052] As shown in FIG. 4, the heating tube 1 of the embodiment is a peripheral heating structure, that is, the heating tube 1 includes a tube body 11 and a heating coating 12 wrapped on the tube body 11. The heating coating 12 can be electrified to generate heat, and the heat is transmitted to the inside of the tube body 11 to heat and roast the inserted cigarette. The tube body 11 of the heating tube 1 is a metal tube, preferably an aluminum tube. The heat capacity of aluminum is small, and the same thickness needs less heat to heat to the same temperature, which can reduce power consumption. Moreover, aluminum has good heat conductivity, which can quickly transmit heat to the inside for heating. The heating tube is a thin-walled heating tube, specifically, the wall thickness of the tube body 11 of the thin-walled heating tube is less than 0.3 mm. The heat capacity of the thin-walled heating tube is smaller, and the heating speed is faster, but it is more fragile or prone to deformation, and is difficult to package. The packaging structure 101 of the embodiment forms a very stable overall structure, which can well solve this problem.

[0053] Preferably, as shown in Fig. 4, a strip-shaped notch 121 is formed on the heating coating 12 of the heating tube 1, and the temperature sensing part of the temperature sensing element 6 and its cable are located on the outer wall of the tube body 11 and in the strip-shaped notch 121, which accommodates the temperature sensing element 6 and facilitates the heat shrink connection of the first Teflon heat shrink tube 4. Preferably, the temperature sensing element 6 is sized to protrude from the heating coating 12 to ensure that the temperature sensing element 6 can be fixed by force.

[0054] Further, the heating coating 12 comprises an insulation layer and a heating resistance layer, wherein the insulation layer is integrally sintered to cover the outer surface of the tube body 11, and the heating resistance layer is integrally sintered to cover the outer surface of the insulation layer. The heating resistance layer is preferably a thick film circuit heating coating, which is formed by sintering a metal resistance paste as the main raw material. After being powered, it has stable heating power, uniform heating, high power density, small heat capacity, and high thermal efficiency. Its heating effect is much higher than that of traditional heating wires. According to needs, a protective layer can be further integrally sintered on the outer surface of the thick film circuit heating coating for insulation and protection. The heating resistance layer is connected with two heating tube leads 13, which are connected to a circuit board for power supply. The first Teflon heat shrink tube 4 tightens and fixes the heating tube leads 13 when it is heated and shrinks.

[0055] Similarly, the temperature sensing element 6 also has a cable, which is connected to a circuit board for temperature collection and control. A part of the cable is also fixed by the first Teflon heat shrink tube 4.

[0056] As an embodiment of the present embodiment, the inner diameter of the heating tube 1 is 7.5 mm; the inner diameter of the first heat insulation positioning tube 2 is 7.5 mm, the outer diameter is 9.5 mm, and the length is 10 mm; the inner diameter of the second heat insulation positioning tube 3 is 7.5 mm, the outer diameter is 9.5 mm, and the length is 13 mm; the diameter of the first Teflon heat shrink tube 4 is 10-11 mm, and the wall thickness is 0.1-0.2 mm; the inner diameter of the heat insulation sleeve 7 is 10 mm, and the outer diameter is 12 mm; the diameter of the second Teflon heat shrink tube 8 is 13-14 mm, and the wall thickness is 0.1-0.2 mm; the heat insulation silica gel pad 9 is a square body with a length of 19 mm x 19 mm, and the inner diameter is 12 mm.

[0057] From the above, the packaging structure of the integrated heater of the electronic cigarette provided in the embodiment solves the fixing problem of the temperature measuring element and the heating tube lead, avoids the health hazards caused by the packaging with glue and thermal insulation cotton, has the characteristics of small heat capacity, good heat insulation and good adaptability, and can meet the requirements of fast response, accurate temperature control and low energy consumption. The electronic cigarette made by using the packaging structure has a taste comparable to that of the international advanced electromagnetic induction inner core heating cigarette set, and does not need to be matched with a special cigarette containing a metal heating sheet.

[0058] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed in the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. An encapsulation structure of an integrated heater of an electronic cigarette, characterized by, The package structure comprises a heating pipe (1), a first heat insulation positioning pipe (2), a second heat insulation positioning pipe (3), a first Teflon heat shrink pipe (4), a temperature measuring element (6) and a heat insulation sleeve pipe (7), wherein, The heating pipe (1) is clamped between the first heat insulation positioning pipe (2) and the second heat insulation positioning pipe (3), the first heat insulation positioning pipe (2), the heating pipe (1) and the second heat insulation positioning pipe (3) are connected into one body through the first Teflon heat shrink pipe (4), and the first heat insulation positioning pipe (2), the heating pipe (1) and the second heat insulation positioning pipe (3) are coaxial, and the temperature sensing part of the temperature measuring element (6) is located on the outer surface of the heating pipe (1) and is fixed through the first Teflon heat shrink pipe (4); The heat insulation sleeve pipe (7) is sleeved on the first Teflon heat shrink pipe (4) and covers the first heat insulation positioning pipe (2), the heating pipe (1) and the second heat insulation positioning pipe (3), and the heat insulation sleeve pipe (7) is fixedly connected with the first heat insulation positioning pipe (2) and the second heat insulation positioning pipe (3); the outer diameters of the first heat insulation positioning pipe (2) and the second heat insulation positioning pipe (3) are greater than the outer diameter of the heating pipe (1), so as to form a heat insulation cavity between the heat insulation sleeve pipe (7) and the heating pipe (1).

2. The encapsulation structure of an electronic cigarette integrated heater according to claim 1, characterized in that, The package structure further comprises a second Teflon heat shrink pipe (8), the second Teflon heat shrink pipe (8) is sleeved on the heat insulation sleeve pipe (7), and the heat insulation sleeve pipe (7) is heat-shrunkly connected with the first heat insulation positioning pipe (2) and the second heat insulation positioning pipe (3) through the second Teflon heat shrink pipe (8).

3. The encapsulation structure of an electronic cigarette integrated heater according to claim 2, characterized in that, The package structure further comprises a heat insulation silica gel pad (9), the heat insulation silica gel pad (9) is sleeved on the second Teflon heat shrink pipe (8) and covers at least the entire heating pipe (1).

4. The encapsulation structure of an electronic cigarette integrated heater according to claim 3, characterized in that, The heating pipe (1) is a thin-walled heating pipe; the heating pipe (1) comprises a pipe body (11) and a heating coating (12) wrapped on the pipe body (11), and the wall thickness of the pipe body (11) is less than 0.3 mm.

5. The encapsulation structure of an electronic cigarette integrated heater according to claim 4, characterized in that, The heating coating (12) comprises an insulating layer and a heating resistance layer, the insulating layer is wrapped on the outer surface of the pipe body (11), and the heating resistance layer is wrapped on the outer surface of the insulating layer.

6. The encapsulation structure of an electronic cigarette integrated heater according to claim 5, characterized in that, The heating pipe lead wire (13) is connected to the heating resistance layer and is led out from between the first Teflon heat shrink pipe (4) and the second heat insulation positioning pipe (3) or from between the first Teflon heat shrink pipe (4) and the first heat insulation positioning pipe (2).

7. The encapsulation structure of an electronic cigarette integrated heater according to claim 6, characterized in that, The cable of the temperature measuring element (6) is led out from between the first Teflon heat shrink pipe (4) and the second heat insulation positioning pipe (3) or from between the first Teflon heat shrink pipe (4) and the first heat insulation positioning pipe (2).

8. The encapsulation structure of an electronic cigarette integrated heater according to claim 7, characterized in that, The inner diameters of the first heat insulation positioning tube (2), the heating tube (1) and the second heat insulation positioning tube (3) are the same, the first heat insulation positioning tube (2), the heating tube (1) and the second heat insulation positioning tube (3) are kept coaxial through an auxiliary tool (5) first, and then the first Teflon heat shrink tube (4) is sleeved on the first heat insulation positioning tube (2), the heating tube (1) and the second heat insulation positioning tube (3) to perform heat shrink connection.

9. The encapsulation structure of an electronic cigarette integrated heater according to claim 8, characterized in that, The tube body (11) of the heating tube (1) is a metal tube; the first heat insulation positioning tube (2), the second heat insulation positioning tube (3) and the heat insulation sleeve tube (7) are glass tubes, quartz tubes, plastic tubes, ceramic tubes or metal tubes; and the heat insulation silica gel pad (9) is a foamed silica gel pad.

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