CN217771509U

CN217771509U - Electronic cigarette

Info

Publication number: CN217771509U
Application number: CN202221696642.6U
Authority: CN
Inventors: 郑晓远; 赵春; 陈祖炜; 赵丽晓; 姚志贵
Original assignee: BYD Precision Manufacturing Co Ltd
Current assignee: BYD Precision Manufacturing Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-11-11
Anticipated expiration: 2032-07-01

Abstract

The utility model provides a be used for avoiding the higher problem of the outside local temperature of electron cigarette, promote user's use and experience. The electronic cigarette comprises a shell, a heater and a coil, wherein the shell is provided with an accommodating cavity, the heater and the coil are installed in the accommodating cavity, the heater is used for inducing an alternating magnetic field to heat an aerosol generating material, the heater comprises a high-temperature part and a low-temperature part, the high-temperature part and the low-temperature part are arranged in the length direction of the heater, the coil surrounds the heater, the coil and the heater are spaced from each other, the coil comprises a first part and a second part, the first part and the second part are arranged in the length direction of the coil, the first part corresponds to the high-temperature part, the second part corresponds to the low-temperature part, and the coil width of the first part is larger than that of the second part.

Description

Electronic cigarette

Technical Field

The utility model relates to an electron cigarette field especially relates to an electron cigarette.

Background

Electronic cigarettes are becoming more and more popular with users due to their smart appearance and the choice of multiple flavors. In the electromagnetic induction heating system of current electron cigarette, the heat that produces when the coil circular telegram is big, and the heat conducts the product surface through the inner structure of electron cigarette, very easily leads to the outside local temperature of electron cigarette higher, has influenced user's use and has experienced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electronic cigarette for avoid the higher problem of the outside local temperature of electronic cigarette, promote user's use and experience.

In a first aspect, the utility model provides an electronic cigarette, include:

a housing provided with an accommodating chamber;

a heater mounted in the accommodating chamber, the heater being for inducing an alternating magnetic field to heat an aerosol generating material, the heater comprising a high temperature portion and a low temperature portion, the high temperature portion and the low temperature portion being arranged along a length direction of the heater;

and a coil installed in the accommodating chamber, the coil being disposed around the heater and spaced apart from the heater, the coil including a first portion and a second portion, the first portion and the second portion being arranged along a length direction of the coil, the first portion corresponding to the high temperature portion, the second portion corresponding to the low temperature portion, a coil width of the first portion being greater than a coil width of the second portion.

Wherein the coil widths of the first portions are equal, and/or the coil widths of the second portions are equal.

Wherein the coil width of the first portion gradually increases along the direction from the second portion to the first portion, and/or the coil width of the second portion gradually decreases along the direction from the first portion to the second portion.

The electronic cigarette further comprises a support, the support is installed in the accommodating cavity, the support is located between the coil and the heater, the coil and the heater are spaced from each other, the coil is located, the support deviates from the surface of the heater, or the coil is located, the insulating base material faces the surface of the support, or the number of the coil is two, one of the coil is located, the insulating base material deviates from the surface of the support, and the other of the coil is located, the insulating base material faces the surface of the support.

Wherein, the electron cigarette includes the flexible line way board, the flexible line way board include insulating substrate with the coil, insulating substrate install in hold the chamber, and locate the support deviates from the surface of heater, the coil is located insulating substrate deviates from the surface of support.

Wherein, the insulating substrate is a polyester film or a polyimide film.

The flexible circuit board further comprises a first bonding layer, and the first bonding layer is connected between the insulating base material and the coil.

The flexible circuit board further comprises a second bonding layer, and the second bonding layer covers the coil.

The electronic cigarette further comprises a heat insulation layer, the heat insulation layer is arranged in the accommodating cavity, the heat insulation layer is arranged on the surface, facing the heater, of the support and is spaced from the heater, or the heat insulation layer is arranged on the surface, deviating from the heater, of the support, and the coil is arranged on the surface, deviating from the support, of the heat insulation layer;

or the electronic cigarette comprises two layers of heat insulation layers, the two layers of heat insulation layers are arranged in the accommodating cavity, one layer of heat insulation layer is arranged on the surface, facing the heater, of the support and is spaced from the heater, the other layer of heat insulation layer is arranged on the surface, facing away from the heater, of the support, and the coil is arranged on the surface, facing away from the support, of the heat insulation layer of the other layer.

Wherein, electron cigarette still includes magnetic screen piece, magnetic screen piece install in hold the chamber, magnetic screen piece covers the coil deviates from the surface of heater.

Wherein, the casing still is equipped with the patchhole, the opening of patchhole is located the top surface of casing, the patchhole with hold the chamber and communicate.

The utility model discloses in the shown electron cigarette, the coil width of first portion is greater than the coil width of second portion, has increased the sectional area of first portion in other words, has reduced the resistance of first portion, has reduced the magnetic flux that the first portion produced, has reduced the self calorific capacity of first portion. Because the first part corresponds to the high-temperature part, the self-heating quantity reduced by the first part can offset the partial heat quantity difference between the high-temperature part and the low-temperature part, the heat quantity difference transmitted to the shell from different parts of the heating pipe and the coil is less ensured, the integral temperature uniformity of the shell is ensured, the problem that the appearance local temperature of the electronic cigarette is high to cause scalding is avoided, the use safety of the electronic cigarette is ensured, the problem that the excessive heat is transmitted to the shell to cause heat loss is also avoided, and the use experience of a user is improved.

Drawings

In order to more clearly explain the technical solution of the present invention, the attached drawings required for the present invention will be explained below.

Fig. 1 is a schematic diagram of an assembly structure of an electronic cigarette and an aerosol generating material provided by the present invention;

FIG. 2 is an exploded view of the assembled structure of FIG. 1;

FIG. 3 is a cross-sectional structural view of the assembled structure of FIG. 1;

FIG. 4 is an enlarged view of region A of the cross-sectional structure of FIG. 3;

FIG. 5 is a schematic view of the heater in the exploded configuration of FIG. 2;

FIG. 6 is a schematic view of the structure of the flexible wiring board in the exploded structure shown in FIG. 2;

fig. 7 is a schematic view of an assembled structure of the support and the flexible wiring board in the disassembled structure shown in fig. 2.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, fig. 1 is an assembly structure diagram of an electronic cigarette 100 and an aerosol generating material 200 according to the present invention, and fig. 2 is an exploded structure diagram of the assembly structure shown in fig. 1.

The electronic cigarette 100 includes a housing 10, a heater 20, a holder 30, a Flexible Printed Circuit (FPC) 40, a heat insulating layer 50, and a magnetic shield sheet 60. The housing 10 is provided with a receiving chamber (not shown) located inside the housing 10 and an insertion hole 102 having an opening at the top surface of the housing 10, the insertion hole 102 communicating with the receiving chamber. An aerosol-generating material 200 such as a tobacco rod may be placed into or removed from the receiving cavity through the insertion aperture 102. The heater 20, the bracket 30, the flexible wiring board 40, the thermal insulating layer 50, and the magnetic shield sheet 60 are mounted to the accommodating chamber.

It should be noted that the terms of orientation such as "top" and "bottom" used in the description of the electronic cigarette 100 of the present invention are all described with reference to the orientation of the electronic cigarette 100 shown in fig. 1, and do not form a limitation of the electronic cigarette 100 in practical applications.

In the present embodiment, the housing 10 has a substantially rectangular parallelepiped shape, and the length dimension of the housing 10 is larger than the width dimension and the height dimension, so as to facilitate grasping when the user uses the electronic cigarette 100. Wherein the housing 10 may be a single housing, or the housing 10 may include a plurality of sub-housings assembled to form the housing 10. In addition, the electronic cigarette 100 may further include a cover (not shown), which is detachably mounted to the top surface of the housing 10. When the electronic cigarette 100 is not used, the cover body can cover the opening of the insertion hole 102, prevent foreign matters such as external dust from entering the insertion hole 102, and ensure the smoothness of the insertion hole 102. In other embodiments, the electronic cigarette 100 may further include an intermediate housing provided with an insertion hole 102, the intermediate housing being fitted to a surface of the housing 10, the insertion hole 102 communicating with the accommodation chamber.

Referring to fig. 2, fig. 3 and fig. 4, fig. 3 is a schematic cross-sectional view of the assembly structure shown in fig. 1, and fig. 4 is an enlarged view of a region a in the cross-sectional view shown in fig. 3.

The heater 20 is installed at the middle region of the receiving chamber 101. The heater 20 may be arranged to heat the aerosol-generating material 200 by inducing an alternating magnetic field by electromagnetic induction to cause evaporation of at least one volatile component of the aerosol-generating material 200 to form an aerosol for inhalation. In this embodiment, the heater 20 is a metal tube. The central axis of the heater 20 coincides with the central axis O of the accommodation chamber 101. The heater 20 may receive the aerosol-generating material 200 therein from the insertion hole 102 into the receiving chamber 101, and may induce the alternating magnetic field generated by the flexible wiring board 40 to generate heat to heat the aerosol-generating material 200.

In other embodiments, the heater 20 may also be a metal rod, in which case the heater 20 may be inserted inside the aerosol-generating material 200 and may induce an alternating magnetic field to heat the aerosol-generating material 200.

It should be noted that, when the heater 20 induces the alternating magnetic field to heat the aerosol-generating material 200, different portions of the heater 20 generate different amounts of heat, which causes different amounts of heat transferred from different portions of the heater 20 to the outside of the electronic cigarette 100, and thus, local hot spots are easily generated outside the electronic cigarette 100, which affects the user experience.

Next, when the aerosol-generating material 200 is heated by the heater 20, the heater 20 is structurally divided according to different temperatures at different portions of the heater 20, and the structure of the heater 20 will be described in detail.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating the heater 20 in the exploded structure of fig. 2.

The heater 20 includes a high temperature part 21 and a low temperature part 22, and the high temperature part 21 and the low temperature part 22 are arranged along a length direction of the heater 20. Wherein the length direction of the heater 20 is parallel to the central axis of the heater 20. When the heater 20 is operated, the high temperature part 21 generates heat more than the low temperature part 22. That is, the temperature of the high temperature portion 21 is greater than that of the low temperature portion 22. In the present embodiment, the high temperature part 21 is located at the bottom side of the heater 20, and the low temperature part 22 is located at the top side of the heater 20.

In other embodiments, the high temperature portion 21 may be located on the top side of the heater 20, and the low temperature portion 22 may be located on the bottom side of the heater 20, or the high temperature portion 21 may be located on the middle portion of the heater 20, and the low temperature portion 22 may be located on the edge portion of the heater 20, and the present invention is not limited to the position and number of the high temperature portion 21 and the low temperature portion 22 in the heater 20.

Referring to fig. 2, 3 and 4, the bracket 30 is disposed around the heater 20 and spaced apart from the heater 20. In the present embodiment, the holder 30 has a substantially cylindrical shape, and the center axis of the holder 30 coincides with the center axis O of the housing chamber 101. Wherein, the heater 20 and the thermal insulation layer 50 are both positioned at the inner side of the bracket 30, and the flexible circuit board 40 and the magnetic shielding sheet 60 are both positioned at the outer side of the bracket 30.

Referring to fig. 6, fig. 6 is a schematic structural diagram of the flexible circuit board 40 in the exploded structure shown in fig. 2.

The flexible printed circuit board 40 is disposed on a surface of the support 30 facing away from the heater 20 and surrounds the heater 20. In this embodiment, the flexible printed circuit 40 is cylindrical, and the central axis of the flexible printed circuit 40 coincides with the central axis O of the accommodating chamber 101. The flexible wiring board 40 includes an insulating substrate 41 and a coil 42. An insulating substrate 41 is provided on the surface of the support 30 facing away from the heater 20. The insulating substrate 41 is an insulating film made of an insulating material. Illustratively, the insulating substrate 41 may be a polyester film made of a polyester material, or the insulating substrate 41 may be a polyimide film made of polyimide, so that the insulating substrate 41 has a stable geometric size and a strong tensile strength, and can resist a temperature above 250 ℃, thereby ensuring the reliability of the flexible printed circuit board 40 in use.

The coil 42 is disposed on the surface of the insulating substrate 41 away from the support 30 and surrounds the heater 20. Specifically, the coil 42 is disposed helically around the heater 20 along the length of the heater 20. In other embodiments, the coil 42 may also be disposed on the surface of the insulating substrate 41 facing the support 30, or there may be two coils 42, one coil 42 is disposed on the surface of the insulating substrate 41 facing away from the support 30, and the other coil 42 is disposed on the surface of the insulating substrate 41 facing the support 30.

In addition, the electronic cigarette 100 further includes a control circuit (not shown), which is electrically connected to the coil 42. The control circuit may apply an alternating current to the coil 42, and the coil 42 generates an alternating magnetic field after applying the alternating current and generates electromagnetic induction with the heater 20, so that the heater 20 generates a changing magnetic field through the electromagnetic induction to heat the aerosol-generating material 200.

In this embodiment, the coil 42 is an FPC coil. In other words, the coil 42 is a conductive circuit disposed on the insulating substrate 41, which helps to save the cost of the coil 42. The coil 42 has good flexibility, can be bent at will, and has the advantages of high reliability, light weight, small volume, good heat dissipation, convenient installation and the like. The coil 42 is a copper foil such as electrolytic copper or rolled copper. Illustratively, the coil 42 may be formed by electrodeposition or electroplating to ensure that the coil 42 has compliant and rigid smooth characteristics. It will be appreciated that the width and thickness of the coil 42 may be designed according to specific design requirements, and/or the coil 42 may also include one or more layers of copper foil.

It should be noted that the electronic cigarette 100 may further include a first adhesive layer (not shown) and a second adhesive layer (not shown), the first adhesive layer is connected between the insulating substrate 41 and the coil 42 to adhere the insulating substrate 41 to the coil 42, and the second adhesive layer may serve as a cover layer to cover the coil 42 to protect the coil 42. Wherein the first adhesive layer and the second adhesive layer may be different portions of the same adhesive layer.

In other embodiments, the coil 42 may not be an FPC coil, and the coil 42 may be directly disposed on the surface of the bracket 30 away from the heater 20, and the present invention is not limited to the type of the coil 42.

Referring to fig. 5 and 7, fig. 7 is a schematic view of an assembly structure of the bracket 30 and the flexible circuit board 40 in the electronic cigarette 100 shown in fig. 2.

The coil 42 includes a first portion 43 and a second portion 44, and the first portion 43 and the second portion 44 are arranged along a length direction of the coil 42. Wherein the length direction of the coil 42 is parallel to the central axis of the coil 42. Specifically, the first portion 43 corresponds to the high temperature portion 21, and the second portion 44 corresponds to the low temperature portion 22. The first portion 51 has a coil width W ₁ The second portion 52 has a coil width W ₂ ，W ₁ ＞W ₂ . Exemplary, W ₁ ＝3mm，W ₂ ＝2mm。

It should be noted that the first portion 43 corresponds to the high temperature portion 21, which means that the heat of the high temperature portion 21 can be transferred to the first portion 43 through the bracket 30. Similarly, the second portion 44 corresponds to the low temperature portion 22 in that heat from the low temperature portion 22 can be transferred to the second portion 44 via the bracket 30.

In this embodiment, the first portion 43 is located on the bottom side of the coil 42 and the second portion 44 is located on the top side of the coil 42. The first portion 43 has a uniform coil width, and the second portion 44 has a uniform coil width. In other embodiments, the coil width of the first portion 43 may be unequal, for example, the coil width of the first portion 43 may increase gradually along the direction from the second portion 44 to the first portion 43, or the coil width of the second portion 44 may be unequal, for example, the coil width of the second portion 44 may decrease gradually along the direction from the first portion 43 to the second portion 44.

The utility model discloses in the shown electron cigarette 100, the coil width of first part 43 is greater than the coil width of second part 44, has increased the sectional area of first part 43 in other words, has reduced the resistance of first part 43, has reduced the magnetic flux that first part 43 produced, has reduced the self calorific capacity of first part 43. Because the first portion 43 corresponds to the high-temperature portion 21, the self-heating amount reduced by the first portion 43 can offset the partial heat amount difference between the high-temperature portion 21 and the low-temperature portion 22, which is helpful to less ensure the heat amount difference transmitted to the casing 10 by different parts of the heater 20 and the coil 42, and ensure the temperature uniformity of the whole casing 10, thereby not only avoiding the problem that the appearance local temperature of the electronic cigarette 100 is high to cause scalding, ensuring the use safety of the electronic cigarette 100, but also avoiding the problem that the excessive heat is transmitted to the casing 10 to cause heat loss, and improving the use experience of users.

Referring to fig. 4, the thermal insulation layer 50 is disposed on a surface of the bracket 30 facing the heater 20 and spaced apart from the heater 20. Specifically, the heat insulation layer 50 is disposed around the heater 20 to reduce the heat transferred from the heater 20 to the bracket 30, so as to avoid the problem that the heat transferred from the heater 20 to the housing 10 burns the hand of the housing 10, reduce the heat loss of the heater 20, ensure that the heat of the heater 20 is used for heating the aerosol generating material 200 as much as possible, and improve the effective heat utilization rate of the heater 20.

In other examples, the heat insulating layer 50 may also be disposed on the surface of the bracket 30 facing away from the heater 20, in which case the flexible printed circuit board 40 is disposed on the surface of the heat insulating layer 50 facing away from the bracket 30, or the heat insulating layer 50 may also be disposed between the magnetic shielding sheet 60 and the cavity side wall of the accommodating cavity 101; or, the heat insulating layer 50 may have two layers, one layer of heat insulating layer 50 is disposed on the surface of the bracket 30 facing the heater 20, and the other layer of heat insulating layer 50 is disposed on the surface of the bracket 30 facing away from the heater 20, or one layer of heat insulating layer 50 is disposed on the surface of the bracket 30 facing the heater 20, and the other layer of heat insulating layer 50 is disposed between the magnetic shielding sheet 60 and the cavity side wall of the accommodating cavity 101, or one layer of heat insulating layer 50 is disposed on the surface of the bracket 30 facing away from the heater 20, and the other layer of heat insulating layer 50 is disposed between the magnetic shielding sheet 60 and the cavity side wall of the accommodating cavity 101; alternatively, the insulation layer 50 may have three layers, one insulation layer 50 is disposed on the surface of the bracket 30 facing the heater 20, one insulation layer 50 is disposed on the surface of the bracket 30 facing away from the heater 20, and the other insulation layer 50 is disposed between the magnetic shielding sheet 60 and the cavity side wall of the accommodating cavity 101; alternatively, the electronic cigarette 100 may not include the thermal insulation layer 50, which is not limited in this disclosure.

The magnetic shield sheet 60 covers the surface of the coil 42 facing away from the support 30 to shield the alternating magnetic field generated by the coil 42 from leakage of the magnetic field generated by the coil 42. The magnetic shielding sheet 60 can be made of a material having a high magnetic permeability, such as metal, so as to ensure that the magnetic shielding sheet 60 can effectively shield the alternating magnetic field.

The present invention has been described in detail, and the principle and the implementation of the present invention have been explained by using specific examples, and the explanation of the above examples is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. An electronic cigarette, comprising:

a housing provided with an accommodating chamber;

a heater mounted in the housing chamber, the heater for inducing an alternating magnetic field to heat an aerosol generating material, the heater comprising a high temperature portion and a low temperature portion, the high temperature portion and the low temperature portion being arranged along a length direction of the heater;

2. The electronic cigarette of claim 1, wherein the coil widths of the first portion are equal and/or the coil widths of the second portion are equal.

3. The electronic cigarette of claim 1, wherein the coil width of the first portion gradually increases in a direction from the second portion toward the first portion, and/or wherein the coil width of the second portion gradually decreases in a direction from the first portion toward the second portion.

4. The electronic cigarette of any of claims 1-3, further comprising a bracket mounted to the receiving cavity, the bracket being positioned between the coil and the heater and spaced apart from the heater, the coil being disposed on a surface of the bracket facing away from the heater.

5. The electronic cigarette of claim 4, wherein the electronic cigarette comprises a flexible printed circuit board, the flexible printed circuit board comprises an insulating substrate and the coil, the insulating substrate is mounted in the accommodating cavity and is disposed on a surface of the support facing away from the heater, the coil is disposed on a surface of the insulating substrate facing away from the support, or the coil is disposed on a surface of the insulating substrate facing towards the support, or there are two coils, one coil is disposed on a surface of the insulating substrate facing away from the support, and the other coil is disposed on a surface of the insulating substrate facing towards the support.

6. The electronic cigarette of claim 5, wherein the flexible circuit board further comprises a first adhesive layer coupled between the insulating substrate and the coil.

7. The electronic cigarette of claim 6, wherein the flexible circuit board further comprises a second adhesive layer, the second adhesive layer covering the coil.

8. The electronic cigarette of claim 4, further comprising a thermal insulation layer mounted in the receiving cavity, wherein the thermal insulation layer is disposed on a surface of the support facing the heater and spaced apart from the heater, or wherein the thermal insulation layer is disposed on a surface of the support facing away from the heater, and wherein the coil is disposed on a surface of the thermal insulation layer facing away from the support;

or the electronic cigarette comprises two layers of heat insulation layers, the two layers of heat insulation layers are arranged in the accommodating cavity, one layer of heat insulation layer is arranged on the surface, facing the heater, of the support and is spaced from the heater, the other layer of heat insulation layer is arranged on the surface, deviating from the heater, of the support, and the coil is arranged on the surface, deviating from the support, of the other layer of heat insulation layer.

9. The electronic cigarette of claim 1, further comprising a magnetic shield sheet mounted to the receiving cavity, the magnetic shield sheet covering a surface of the coil facing away from the heater.

10. The electronic cigarette of claim 1, wherein the housing is further provided with an insertion hole, an opening of the insertion hole is located on a top surface of the housing, and the insertion hole communicates with the accommodation chamber.