Pursuant to 35 U.S.C. § 119 and the Paris Convention Treaty, this application claims foreign priority to Chinese Patent Application No. 202111015823.8 filed Aug. 31, 2021, to Chinese Patent Application No. 202122104062.5 filed Aug. 31, 2021, to Chinese Patent Application No. 202111109634.7 filed Sep. 22, 2021, and to Chinese Patent Application No. 202122292024.7 filed Sep. 22, 2021. The contents of all of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P. C., Attn.: Dr. Matthias Scholl Esq., 245 First Street, 18th Floor, Cambridge, Mass. 02142.
The disclosure relates to a heating core, an electronic cigarette, and preparation methods thereof.
A conventional electronic cigarette includes e-liquid absorbent cotton or a ceramic body for absorbing the e-liquid to be atomized. The absorption effect of the ceramic body on thick e-liquid is not good. The cotton is loose and the e-liquid may leak therefrom. In addition, when the atomized e-liquid cools to yield the condensate, the condensate tends to block the air channel of the electronic cigarette. Furthermore, the e-liquid absorbent cotton may burn due to excessive heat. The e-liquid absorbent cotton is usually manually disposed within the conventional electronic cigarette. The manual operation cannot ensure the uniformity of the cotton, thus affecting the taste of the electronic cigarette.
The first objective of the disclosure is to provide a heating core; the heating core comprises a conductor and an e-liquid absorber with a fixed structure; the conductor comprises a cavity and the e-liquid absorber is disposed in the cavity.
The second objective of the disclosure is to provide an electronic cigarette comprising the heating core.
The third objective of the disclosure is to provide a preparation method for the heating core, and the method comprises: fixing the conductor comprising the cavity in a mold; injecting a solidifiable material into the mold, and guiding the solidifiable material to the cavity; and solidifying the solidifiable material in the cavity to form the e-liquid absorber.
The fourth objective of the disclosure is to provide a preparation method for the electronic cigarette, the method comprises: preparing the heating core; and inserting the heating core into an e-liquid tank to form an electronic cigarette.
In the drawings, the following reference numbers are used: 1. Conductor; 2. E-liquid absorber; 3. Heating element; 11. Cavity; 12. Channel; 13. E-liquid inlet; 21. Through hole; 31. Conductive pin; 41. Mouthpiece; 100. Electronic cigarette; 101. First hollow tube; 102. Second hollow tube; 900. Second preparation method; 1000. Third preparation method; and 1100. Fourth preparation method.
To further illustrate the disclosure, embodiments detailing a heating core, an electronic cigarette, and preparation methods thereof are described below. It should be noted that the following embodiments are intended to describe and not to limit the disclosure.
A heating core comprises a conductor and an e-liquid absorber with a fixed structure. The conductor comprises a cavity and the e-liquid absorber is disposed in the cavity.
As shown in
In certain examples, the e-liquid absorber 2 is obtained by injecting solidifiable material into a mold, and then hardening and sintering the solidifiable material. The e-liquid absorber 2 is formed using the injection molding process which offers advantages such as automatic production and consistency in product quality, thus improving the taste of the e-cigarette.
The e-liquid absorber 2 includes, but is not limited to, ceramic, mica, and e-liquid absorbing resin. The conductor 1 includes, but is not limited to, metal, graphene, and carbon nanomaterials.
The e-liquid absorber 2 comprises a first side wall and the conductor 1 comprises an inner wall. An outer surface of the first side wall is tightly attached to the inner wall to eliminate the gap therebetween and prevent the e-liquid from escaping through the gap.
In certain examples, the heating core further comprises a heating element 3 dispose in the e-liquid absorber 2. The heating element 3 is made of conductive metal. The conductive metal includes, but is not limited to, copper, aluminum, silver, nickel, tungsten, and gold. The conductive metal includes, but is not limited to, a heating wire, a heating sheet, and a heating cylinder. The heating wire and the heating sheet are formed in a spiral or wavy shape. The heating element 3 is wrapped around the e-liquid absorber 2 and comprises a conductive pin 31 extending through the e-liquid absorber 2 to the outside of the cavity 11. The conductive pin 31 is used to transport electricity from a power supply to the heating element 3. In certain examples, the heating element 3 is wrapped around the e-liquid absorber 2 spirally to provide uniform heating throughout the e-liquid. In certain examples, the e-liquid absorber 2 comprises at least one through hole 21 extending axially through a bottom surface and a top surface of the e-liquid absorber 2. As shown in
Optionally, in certain examples, the conductor 1 is provided with the conductive pin 31 through which the electricity is directly transported from a power supply to the conductor 1 for heating.
Optionally, in certain examples, a coil is wrapped around the heating core to produce an electromagnetic field when an electric current is passing through the coil. The heating element 3 or the conductor 1 is heated from the electromagnetic field.
In certain examples, the conductor 1 further comprises at least one e-liquid inlet 13 communicating with the cavity 11 and opposite to the e-liquid absorber 2. The temperature of the conductor 1 reduces the viscosity of the e-liquid to improve the degree of atomization, thus providing a smooth flow of e-liquid into the cavity 11. Preferably, a plurality of e-liquid inlets 13 is disposed on the conductor 1 to ensure adequate e-liquid flows to the heating element 3, thus preventing the e-liquid absorber 2 from burning out. The solidifiable material is injected into the mold through the plurality of e-liquid inlets 13 to ensure the molding process runs smoothly and efficiently.
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Another example of the heating core is illustrated in
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Understandably, the electronic cigarette 100 may comprise the heating core illustrated in
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S610. fixing the conductor 1 comprising the cavity 11 in a mold;
S620. injecting a solidifiable material into the mold, and guiding the solidifiable material to the cavity 11; the solidifiable material includes, but is not limited to, ceramic, mica, and e-liquid absorbing resin; and
S630. solidifying the solidifiable material in the cavity 1 to form the e-liquid absorber 2.
Through the preparation method, the e-liquid absorber 2 is directly disposed in the conductor thus greatly increasing the contact area therebetween, and the heat can be transferred rapidly between the e-liquid absorber 2 and the conductor.
As shown in
S710. fixing the heating element 3 of the heating core in the mold; and
S720. guiding the heating element 3 in the cavity 11.
The heating element 3 is directly wrapped around the e-liquid absorber 2 by S710 and S720 so that the heating is uniform.
As shown in
S810. allowing the solidifiable material to stand and solidify in the cavity 11 to form a precursor; and
S820. sintering the precursor at 600-700° C. for at least 16 hours to obtain the e-liquid absorber 2.
In certain examples, the conductor further comprises at least one e-liquid inlet 13 communicating with the cavity 11 and opposite to the e-liquid absorber 2. The solidifiable material flows through the at least one e-liquid inlet 13 into the cavity 11. Preferably, a plurality of e-liquid inlets 13 is disposed on the conductor 1 to ensure adequate e-liquid flows to the heating element 3 and the molding process runs efficiently.
As shown in
S910. fixing two spiral-shaped heating elements 3 on two locating columns of the mold, respectively; and inserting each conductive pin 31 into a corresponding hole in the mold to prevent the contact of the conductive pin with the solidifiable material;
S920. fixing one end of the first hollow tube 101 on the two locating columns; disposing two spiral-shaped heating elements 3 in the cavity 11; shaping the mold to define a fixed space having the same shape as the conductor 1; fixing the conductor 1 in the fixed space; and inserting a column body into one end of the second hollow tube 102 to prevent the solidifiable material from entering the channel 12;
S930. injecting the solidifiable material into the mold so that the solidifiable material flows through the plurality of e-liquid inlets 13 into the cavity 11 for solidifying; and
S940. taking the heating core from the mold and sintering at 600-700° C. for 16 hours to fix the e-liquid absorber 2 in the cavity 11.
Through the preparation method 900, two through holes 21 are disposed in the e-liquid absorber 2; the two spiral-shaped heating elements 3 are embedded into the second side walls of the two through holes 21, respectively; and each conductive pin 31 extends out of the first hollow tube 101.
As shown in
S1010. fixing a spiral-shaped heating element 3 on a locating column of the mold; and inserting each conductive pin 31 into a corresponding hole in the mold to prevent the contact of the conductive pin with the solidifiable material;
S1020. fixing one end of the first hollow tube 101 on the locating column; disposing one heating elements 3 in the cavity 11; shaping the mold to define a fixed space having the same shape as the conductor 1; fixedly disposing the conductor 1 in the fixed space; and inserting a column body into one end of the second hollow tube 102 to prevent the solidifiable material from entering the channel 12;
S1030. injecting the solidifiable material into the mold so that the solidifiable material flows through the plurality of e-liquid inlets 13 into the cavity 11 for solidifying; and
S1040. taking the heating core from the mold and sintering at 600-700° C. for 16 hours to fix the e-liquid absorber 2 in the cavity 11.
Depending on the third preparation method 1000 used, only one through hole 21 is disposed in the e-liquid absorber 2; the spiral-shaped heating element 3 is embedded into the second side wall of the only one through hole 21; and each conductive pin 31 extends out of the first hollow tube 101.
As shown in
S1110. preparing the heating core; and
S1120. inserting the heating core into the e-liquid tank 4 to form an electronic cigarette.
It will be obvious to those skilled in the art that changes and modifications may be made, and therefore, the aim in the appended claims is to cover all such changes and modifications.
Number | Date | Country | Kind |
---|---|---|---|
202111015823.8 | Aug 2021 | CN | national |
202122104062.5 | Aug 2021 | CN | national |
202111109634.7 | Sep 2021 | CN | national |
202122292024.7 | Sep 2021 | CN | national |