CN216601675U

CN216601675U - Electronic cigarette and heating body thereof

Info

Publication number: CN216601675U
Application number: CN202122964898.2U
Authority: CN
Inventors: 余明先; 张霖; 王伟江; 刘友昌; 戴高环; 王超; 何培与; 何晓刚; 姚伟昌; 李毅
Original assignee: Shenzhen Taotao Technology Co ltd
Current assignee: Shenzhen Taotao Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-27
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a heating element for an electronic cigarette, which is a cylindrical heating element and comprises an inner covering layer, a resistor body and an outer covering layer which are sequentially arranged from inside to outside. The resistor body, the inner covering layer and the outer covering layer are of an integrally formed structure. The resistor body is a sheet resistor body and comprises a carbon fiber material. The inner cover layer and the outer cover layer are both made of ceramic materials, and the thermal conductivity of the ceramic materials of the inner cover layer is larger than that of the ceramic materials of the outer cover layer. Still provide an electron cigarette, including the tobacco rod, set up in the base of tobacco rod bottom end, set up in power in the base, and set up in heat-generating body in the tobacco rod, the heat-generating body is foretell heat-generating body. The electronic cigarette and the heating body thereof provided by the utility model can improve the heat transfer efficiency of the heating body, have good heating uniformity, effectively improve the mechanical strength of the heating body, and have long service life and good product quality.

Description

Electronic cigarette and heating body thereof

Technical Field

The utility model relates to the technical field of electronic cigarettes, in particular to an electronic cigarette and a heating body thereof.

Background

With the continuous deepening of the health concept, the non-combustion type electronic cigarette heated by tobacco tends to be popular, and the non-combustion of the tobacco means that a purpose-made cigarette is baked at the temperature of about 300 ℃ under the condition of not being ignited by open fire, so that substances such as nicotine, fragrance and the like are evaporated in the form of aerosol and are smoked by people, and the taste of the electronic cigarette is similar to that of the electronic cigarette smoked by traditional tobacco. By heating and not burning the smoke generated by the special tobacco, more than 90 percent of harmful substances formed when the tobacco is burnt can be reduced. The consumer can obtain the mouthfeel similar to the traditional tobacco, and simultaneously, the harm to the health is reduced.

The core component of the HNB (heat but not burning) type electronic cigarette is a ceramic heating element, and the ceramic heating element heats up and heats up to bake the cigarette, so that substances such as nicotine and flavor in the tobacco are heated to form an aerosol state for smoking. In the prior art, a ceramic heating element is generally a ceramic heating pin, and the ceramic heating pin is formed by laying a heating circuit on a ceramic green substrate, then winding the ceramic green substrate into a cylindrical shape, and sintering the cylindrical ceramic green substrate. Because the ceramic is fragile and insufficient in strength, breakage often occurs in the process of inserting cigarettes, and therefore the heating element is broken, tobacco cannot be heated, so that the tobacco cannot be smoothly baked into aerosol for smoking, the service life of the electronic cigarette is shortened, and the user experience feeling is poor.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides an electronic cigarette and a heating body thereof, which are used for solving the problems of insufficient strength and non-uniform heating of the heating body in the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a heating element for electronic cigarette is a cylindrical heating element, which comprises an inner covering layer, a resistor body and an outer covering layer which are arranged in sequence from inside to outside;

the resistor body, the inner covering layer and the outer covering layer are of an integrally formed structure;

the resistor body is a sheet resistor body and comprises a carbon fiber material;

the inner cover layer and the outer cover layer are both made of ceramic materials, and the thermal conductivity of the ceramic materials of the inner cover layer is larger than that of the ceramic materials of the outer cover layer.

The further improvement of the technical scheme is as follows:

the resistor body comprises long carbon fibers, long carbon fiber bundles or carbon fiber felts; wherein the long carbon fiber bundle is composed of long carbon fibers, and the carbon fiber felt is composed of short carbon fibers.

The length-diameter ratio of the long carbon fiber is more than 5000: 1; the length-diameter ratio of the short carbon fiber is 500-5000: 1.

the inner cladding layer comprises aluminum nitride, silicon nitride, or silicon carbide.

The outer cover layer comprises silicon oxide or aluminum oxide.

The resistor body further includes a graphite sheet and/or graphene.

The resistor body is made of carbon fiber paper.

The heating element further comprises electrodes, each electrode comprises a positive electrode and a negative electrode, the electrodes are respectively arranged at two axial ends of the heating element, one end of each positive electrode is connected with one end of the corresponding resistor body, and one end of each negative electrode is connected with one end, far away from the corresponding positive electrode, of the corresponding resistor body.

The utility model also provides an electronic cigarette, which comprises a cigarette rod, a base arranged at the bottom end of the cigarette rod, a power supply arranged in the base and a heating body arranged in the cigarette rod, wherein the heating body is the heating body.

Furthermore, both ends of the heating body are respectively provided with a positive electrode and a negative electrode, and one ends of the positive electrode and the negative electrode, which are far away from the heating body, are respectively electrically connected with a power supply of the electronic cigarette.

According to the technical scheme, the resistor body is a sheet resistor body and comprises the carbon fiber material, the mechanical property of the carbon fiber is excellent, the mechanical strength of the heating body can be effectively improved by taking the carbon fiber as the resistor body, the heating body is prevented from being cracked, the service lives of the heating body and the electronic cigarette are effectively prolonged, and the quality of the electronic cigarette product is improved. Meanwhile, the carbon fibers have good heat-conducting property and electric conductivity, the resistance of the resistor body can be adjusted by adjusting the content of the carbon fibers in the sheet resistor body, so that the requirements of different electronic cigarette products are met, the mode of adjusting the size of the resistor is flexible and changeable, and the electronic cigarette is very convenient and practical. The carbon fiber belongs to radiation heat transfer in a heat transfer mode, can reduce the loss of heat to the minimum, has high heat transfer efficiency, is beneficial to energy conservation, and has good heating uniformity. Meanwhile, the resistor body, the inner covering layer and the outer covering layer are of an integrally formed structure, so that the bonding strength among interfaces of all layers can be effectively improved, the falling off at the interfaces is avoided, and the service life of the heating body is further prolonged. The heat conductivity of the ceramic material of the inner covering layer of the heating element is greater than that of the ceramic material of the outer covering layer, the inner covering layer is directly contacted with tobacco, the high heat conductivity of the heating element is more favorable for heating the tobacco and improving the heat transmission efficiency, the outer covering layer is positioned on the outermost layer of the heating element, the heating element has smaller heat conductivity, heat is not easy to be radiated outwards, the heat transmission efficiency of the heating element is improved, the heat transmission efficiency of the heating element can be integrally improved through the arrangement of the inner covering layer and the outer covering layer, and energy consumption is reduced.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a cross section of a heating element for an electronic cigarette according to an embodiment of the present invention.

The meaning of the reference symbols in the drawings is:

1-an outer cover layer; 2-a resistor body; 3-inner cover layer.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

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 invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1: as shown in fig. 1, the heating element for an electronic cigarette of the present embodiment is a cylindrical heating element, and includes an inner cover layer 3, a resistor 2, and an outer cover layer 1, which are provided in this order from the inside to the outside.

The resistor 2 is a sheet-like resistor, and the resistor 2 is made of a carbon fiber material. The resistor body 2 comprises long carbon fibers, long carbon fiber bundles or carbon fiber felts; the long carbon fiber bundle is composed of long carbon fibers, the carbon fiber felt is composed of short carbon fibers, and the short fibers are partially disordered and integrally ordered. The length-diameter ratio of the long carbon fiber is more than 5000: 1; the length-diameter ratio of the short carbon fiber is 500-5000: 1. the carbon fibers are polyacrylonitrile-based carbon fibers (PAN-based carbon fibers). The resistor body 2 can also be carbon fiber paper, the volume fraction of carbon fiber in the carbon fiber paper is 10-25%, and the content of the carbon fiber can be adjusted in the range, so that the resistance value of the resistor body 2 is changed, the requirements of different resistance values of different electronic cigarette products are met, and the application range of the resistor body is wider.

In some embodiments, the resistor body 2 may further include graphite sheets and/or graphene, and the volume fraction of the graphite sheets and/or graphene in the resistor body 2 is 1-5%. For the resistor body 2 including the long carbon fiber bundle, the graphite sheet and the graphene can wrap the long carbon fiber bundle; for the resistor body 2 comprising the carbon fiber felt, due to the disordered and dispersed structure of the short carbon fibers, part of the carbon fibers exist in an isolated manner, or effective connection is not formed among the carbon fibers, so that the part of the carbon fibers cannot participate in heating, and the graphite sheets and the graphene can connect the carbon fibers existing in an isolated manner to form effective connection, so that the content of the carbon fibers participating in heating is increased. In addition, because graphite flake and graphite alkene have good heat conductivility and high surface energy, can make the generating heat of whole heat-generating body more even, also can radiate the generating heat of carbon fiber to the tobacco that needs the heating high-efficiently, can improve the calorific capacity and the radiant quantity of carbon fiber promptly, make the tobacco form aerosol in order to supply the suction to improve user's suction experience.

The resistor body 2, the inner cover layer 3 and the outer cover layer 1 are integrally formed. In the preparation process, the sheet-shaped resistor body 2 is firstly superposed with the inner cover layer 3 and the outer cover layer 1 and then compounded into a whole to form a cuboid structure, then a hollow cylindrical heating body is formed by winding, and the inner cover layer 3 is arranged towards the innermost side during winding forming. The inner coating 3 is in direct contact with the tobacco.

The inner cover layer 3 and the outer cover layer 1 are both made of ceramic materials, and the ceramic material of the inner cover layer 3 has thermal conductivity larger than that of the ceramic material of the outer cover layer 1. The inner cladding layer 3 may be aluminum nitride, silicon nitride, or silicon carbide ceramic. The outer cover layer 1 may be silicon oxide or aluminum oxide ceramic. The ceramic of the inner covering layer 3 has good heat-conducting property, which is beneficial to improving the heat transfer efficiency, and the aluminum nitride, the silicon nitride or the silicon carbide ceramic can not be corroded by tobacco, which is beneficial to prolonging the service life of the heating body. The pottery of outer cover layer 1 has good heat-proof quality, and it can prevent that the heat of heat-generating body from leading to the fact calorific loss to the external diffusion who deviates from the tobacco, is favorable to improving the heat transfer efficiency of heat-generating body, simultaneously, because the outer cover layer 1 of heat-generating body is close to the tobacco rod and the base of electron cigarette, if the heat of heat-generating body transmits in tobacco rod and base in a large number, so can lead to the temperature of tobacco rod and base to rise, serious can lead to the user to take place the scald accident, seriously influence user's suction experience.

The heating element for the electronic cigarette can further comprise electrodes, each electrode comprises a positive electrode and a negative electrode, the electrodes are respectively arranged at two axial ends of the heating element, one end of each positive electrode is connected with one end of the corresponding resistor body 2, and one end of each negative electrode is connected with one end, far away from the corresponding positive electrode, of the corresponding resistor body 2.

This embodiment still provides an electron cigarette, the electron cigarette include the tobacco rod, set up in the base of tobacco rod bottom end, set up in power in the base, and set up in be close to in the tobacco rod the heat-generating body of base one end, the heat-generating body is the heat-generating body in above-mentioned embodiment.

And the two ends of the heating body are respectively provided with a positive electrode and a negative electrode, and one ends of the positive electrode and the negative electrode, which are far away from the heating body, are respectively electrically connected with a power supply of the electronic cigarette. And when the power supply is turned on, the heating body can heat the tobacco inserted into the inner cavity of the heating body so as to form the aerosol for the user to suck.

According to the heating body and the electronic cigarette, the resistance value of the resistance generating body can be changed by adjusting the content of the carbon fiber, so that different requirements of electronic cigarette products of different models are met, the adjusting mode is simple, and the adjustable range is wide. The resistor body comprises carbon fibers, and the carbon fibers are in radiation heat transfer in a heating mode, so that the radiation heating mode can reduce heat loss and improve heat transfer efficiency. Meanwhile, the carbon fiber has excellent mechanical property, and can effectively improve the mechanical strength of the heating body, thereby prolonging the service life of the heating body, improving the quality of the electronic cigarette product and enabling the electronic cigarette product to have more market competitiveness.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A heating element for electronic cigarette is characterized in that: the heating element is a cylindrical heating element and comprises an inner covering layer, a resistor body and an outer covering layer which are sequentially arranged from inside to outside;

2. A heating element for electronic cigarette as claimed in claim 1, characterized in that: the resistor body comprises long carbon fibers, long carbon fiber bundles or carbon fiber felts; wherein the long carbon fiber bundle is composed of long carbon fibers, and the carbon fiber felt is composed of short carbon fibers.

3. A heating element for electronic cigarette as claimed in claim 2, characterized in that: the length-diameter ratio of the long carbon fiber is more than 5000: 1; the length-diameter ratio of the short carbon fiber is 500-5000: 1.

4. a heating element for electronic cigarette as claimed in claim 1, characterized in that: the inner cladding layer comprises aluminum nitride, silicon nitride, or silicon carbide.

5. A heating element for electronic cigarette as claimed in claim 1, characterized in that: the outer cover layer comprises silicon oxide or aluminum oxide.

6. A heating element for electronic cigarette as claimed in claim 1, characterized in that: the resistor body further comprises a graphite sheet and/or graphene.

7. A heating element for electronic cigarette as claimed in claim 1, characterized in that: the resistor body is made of carbon fiber paper.

8. A heating element for electronic cigarette as claimed in any one of claims 1 to 7, characterized in that: the heating element further comprises electrodes, each electrode comprises a positive electrode and a negative electrode, the electrodes are respectively arranged at two axial ends of the heating element, one end of each positive electrode is connected with one end of the corresponding resistor body, and one end of each negative electrode is connected with one end, far away from the corresponding positive electrode, of the corresponding resistor body.

9. The utility model provides an electron cigarette, includes the tobacco rod, set up in the base of tobacco rod bottom end and set up in power in the base, its characterized in that: the heating element is set in the cigarette rod, which is the heating element of any one of claims 1-8.

10. The electronic cigarette of claim 9, wherein: and the two ends of the heating body are respectively provided with a positive electrode and a negative electrode, and one ends of the positive electrode and the negative electrode, which are far away from the heating body, are respectively electrically connected with a power supply of the electronic cigarette.