WO2022078017A1 - Heating assembly of electronic cigarette and preparation method therefor, and electronic cigarette - Google Patents

Abstract

A preparation method for a heating assembly of an electronic cigarette, the method comprising the following steps: providing a metal heating member, which comprises a metal heating ring and two conductor pins respectively electrically connected to the metal heating ring; placing the metal heating member in a mold; respectively injecting a first ceramic slurry and a second ceramic slurry into the mold through two pouring openings of the mold, so as to respectively form a first heat conductor and a second heat conductor which are used for jointly coating the metal heating ring, wherein the first heat conductor is connected to the second heat conductor; and performing sintering and curing operations on the first heat conductor and the second heat conductor at the same time, so as to obtain a heating assembly of an electronic cigarette.

Description

Electronic cigarette heating assembly and preparation method thereof, electronic cigarette technical field

The invention relates to an electronic cigarette heating component and a preparation method thereof, and an electronic cigarette.

Background technique

As one of the substitutes for traditional cigarettes, electronic cigarettes have a wide audience in the market. Since the emergence of electronic cigarettes, the in-depth research and development work on it has never stopped. Among them, the heating safety of electronic cigarettes has attracted much attention.

For cigarette-type electronic cigarettes, the heater generally includes a heating element and a thermal conductor. The thermal conductor of traditional cigarette-type electronic cigarettes is thermally conductive ceramics. The shapes of thermally conductive ceramics are various. The shapes of the pieces are also various, and the combination of the two is used to heat the cigarette and generate smoke for the user to smoke. Secondly, for e-liquid-type electronic cigarettes, the core heating element of the heater is generally a spiral metal heating wire, but it needs to be in direct contact with the e-liquid.

However, for traditional cigarette-type electronic cigarette heaters, the heating element is generally a sheet or strip structure, which is integrated and mounted on the surface of the thermally conductive ceramic by means of patch or circuit printing, and then uses materials such as glass glue. Encapsulation and sintering are carried out to play a protective role, and also to prevent the metal heating element from directly contacting the cigarette, to prevent harmful substances such as heavy metals from being brought into the heating element itself, and to ensure heating safety performance, but this heater still has the following problems:

Since the heating element integrated on the surface of the thermally conductive ceramic is packaged and protected by coating glass glue and other packaging sintering materials, but the thickness of the sintered layer is relatively thin, during use, for example, when replacing cigarettes, Factors such as repeated friction with the cigarette will cause the sintered layer to be worn, which will lead to the exposure of the heating element, and even lead to the wear of the exposed heating element, which will cause heating safety problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a kind of electronic cigarette heating assembly with higher heating safety performance and its preparation method, which avoids the problem that the metal heating element is directly exposed to the periphery and causes the metal heating element to wear. e-cigarette.

The purpose of this invention is to realize through the following technical solutions:

A preparation method of an electronic cigarette heating assembly, comprising the following steps:

A metal heating element is provided, which includes a metal heating ring and two conductor pins respectively electrically connected to the metal heating ring;

placing the metal heating element in the mold;

The first ceramic slurry and the second ceramic slurry are respectively injected into the mold through the two pouring ports of the mold, so as to respectively form a first thermal conductor and a second thermal conductor for jointly covering the metal heating ring , the first heat conductor is connected to the second heat conductor;

The first thermal conductor and the second thermal conductor are simultaneously sintered and solidified to obtain an electronic cigarette heating assembly.

An electronic cigarette heating assembly is prepared by using the preparation method of an electronic cigarette heating assembly according to any of the above embodiments.

An electronic cigarette includes the electronic cigarette heating assembly according to any of the above embodiments, and further includes a cigarette, the electronic cigarette heating assembly is used to heat the cigarette.

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present invention will become apparent from the description, drawings and claims.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, the drawings of other embodiments can also be obtained according to these drawings without creative efforts.

1 is a flow chart of the steps of a method for preparing an electronic cigarette heating assembly in one embodiment;

2 is a schematic structural diagram of an electronic cigarette in an embodiment;

3 is a schematic structural diagram of an electronic cigarette heating assembly in an embodiment;

FIG. 4 is a schematic partial structure diagram of the heating assembly of the electronic cigarette shown in FIG. 3 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. The preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed 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. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, 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 terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The present application provides a preparation method of an electronic cigarette heating assembly. Referring to FIG. 1 , a method for preparing an electronic cigarette heating assembly according to an embodiment includes the following steps:

S110: Provide a metal heating element, which includes a metal heating ring and two conductor pins electrically connected to the metal heating ring respectively.

By pre-molding the metal heating element, it is more convenient for the first thermal conductor and the second thermal conductor to be integrally sintered and formed to encapsulate the metal heating ring of the metal heating element. In this way, integral sintering and molding The first thermal conductor and the second thermal conductor can better cover the metal heating ring of the metal heating element, because the metal heating ring of the metal heating element is more thermally conductive than the first thermal conductor. The outer wall in the body and the second heat conductor has a certain thickness, and the wear resistance of the first heat conductor and the second heat conductor is also higher, compared with a thin layer of glass that is brushed and sintered Adhesive and other materials, the first thermal conductor and the second thermal conductor can better protect the metal heating ring of the metal heating element, and there is no need to additionally apply a sintered layer such as sintered glass glue, so as to make smoke The branch does not need to be in contact with the metal heating ring of the metal heating element, thereby eliminating the risk of introducing harmful substances such as heavy metals.

In this embodiment, both of the conductor pins are conductive metal wires, so that both the conductor pins have good conductivity.

In this embodiment, before the operation of providing the metal heating element, the preparation method of the electronic cigarette heating assembly further includes: forming the metal heating element.

Further, the shape of the first heat conductor and the shape of the second heat conductor are both cylindrical, so that the formed electronic cigarette heating assembly is cylindrical, and at the same time, the heat of the metal heating element can be uniformly conducted to the first heat conductor and the second heat conductor. Two heat conductor surfaces.

Further, the operation of forming the metal heating element specifically includes the following steps: casting and forming the metal heating ring; casting and forming the first conductor pin and the second conductor pin respectively; A conductor pin and the second conductor pin are welded on the metal heating ring.

It can be understood that since the materials of the first conductor pins and the second conductor pins are both conductive materials, but the material of the metal heating ring is a conductive heating material, therefore, they need to be formed separately and then welded by welding. By assembling into an integrated structure, it is more convenient to position the metal heating element in the mold, so as to facilitate the subsequent injection of thermally conductive ceramic slurry in the mold, so as to achieve the effect of in-mold forming.

Further, the operation of forming the metal heating element specifically includes the following steps: pouring the first molten metal in the pouring mold to obtain a metal heating ring; pouring the second molten metal in the pouring mold, in the pouring mold. A first conductor pin and a second conductor pin are simultaneously formed on the metal heating ring.

It can be understood that, because the first conductor pin and the second conductor pin are integrally cast with the metal heating ring, that is, the first conductor pin and the second conductor pin are integral with the metal heating ring. The metal heating ring joints are firmly combined by cooling and crystal reorganization after pouring. On the one hand, it can ensure the structural rigidity, and in the subsequent process, it is not easy to cause problems such as joint breakage. On the other hand, it can better Ensure electrical performance.

It should be noted that although the connection between the first conductor pin and the second conductor pin and the metal heating ring is relatively fragile, because the connection will eventually be covered with the sintered and solidified first conductor. In this way, the thermal conductor and the second thermal conductor can ensure the overall mechanical strength of the heating assembly of the electronic cigarette, so that the metal heating element can be selected and designed and applied in this structural manner.

In this embodiment, the metal heating element generates heat when energized to generate heat, which is used to provide a heat source for the heating assembly of the electronic cigarette. It can be understood that the metal heating element may be a metal heating element or a ceramic metal heating element.

S120: Place the metal heating element in the mold.

By positioning the metal heating element in the mold in advance, it is possible to control the position of the metal heating element in the ceramic slurry when the ceramic slurry is subsequently poured, so that the ceramic slurry can be shaped as expected after sintering. Structure.

S130 : inject the first ceramic slurry and the second ceramic slurry into the mold through the two injection ports of the mold respectively, so as to respectively form a first heat conductor and a second heat conductor for jointly covering the metal heating ring A thermal conductor, the first thermal conductor is connected to the second thermal conductor.

In this embodiment, the first ceramic slurry and the second ceramic slurry are both thermally conductive ceramic slurry, so that the formed first thermal conductor and the second thermal conductor have good thermal conductivity. The first heat conductor and the second heat conductor cover the metal heating element together to prevent the metal heating element from being directly exposed. In this way, there are no toxic and harmful substances such as heavy metals in the electronic cigarette heating element during the heat conduction process, which improves the electronic cigarette heating element. safety of use.

It can be understood that, since both the first ceramic slurry and the second ceramic slurry are in a viscous liquid state, it is necessary to ensure that the interfaces between the first thermal conductor and the second thermal conductor are flat with each other , but it is necessary to make the interface between the first thermal conductor and the second thermal conductor overlap, that is, the two keep in contact with each other, that is, the first thermal conductor and the second thermal conductor The best plane of the interface between the metal heating elements can make the metal heating ring of the metal heating element better cover the embedding formed between the first thermal conductor and the second thermal conductor In the cavity, and during the actual pouring process, it is more difficult to generate tiny air bubbles around the metal heating ring of the metal heating element, so that the interior of the thermally conductive ceramic piece formed after the first thermal conductor and the second thermal conductor are connected The structure is denser and more stable, and the heat conduction effect is more stable, and it can also be in closer contact with the metal heating ring of the metal heating element and the first conductor pins and the second conductor pins, ensuring better In this embodiment, the injection of the first ceramic slurry and the second ceramic slurry into the mold through the two injection ports of the mold respectively includes the following steps:

The first ceramic slurry is poured into the first molding cavity of the mold through the first pouring port of the mold to perform a first pouring operation, wherein the mold further has a second molding cavity, and the mold is placed in the mold. A push-up spacer is arranged between the first molding cavity and the second molding cavity, and the push-up spacer is used to separate the first molding cavity and the second molding cavity, and the metal The metal heating ring of the heating element is held against the ejecting spacer; in the first pouring operation, the mold is in a vertical state, the first molding cavity is located at the bottom, and the first molding cavity is located at the bottom. Filling with the first ceramic slurry and immersing the metal heating ring of the metal heating element, the second molding cavity is located at the top;

pouring the second ceramic slurry into the second molding cavity of the mold through the second pouring port of the mold to perform a second pouring operation;

The ejecting spacer is controlled to move, and the first molding cavity is completely communicated with the second molding cavity. Based on the action of gravity, the first ceramic slurry in the first molding cavity will not flow into the In the second molding cavity, but the second ceramic slurry in the second molding cavity will flow down and fill up the ejection spacer to form a blank area, so that the second ceramic slurry and the the metal heating ring of the metal heating element is in contact;

Compensately pour the second ceramic slurry through the second pouring port of the mold to fill the second molding cavity.

In this way, the internal structure of the heat-conducting ceramic piece formed after the first heat-conducting body and the second heat-conducting body are connected can be made denser and more stable, and the heat-conducting effect is more stable, and can also be connected with the metal heating ring of the metal heating piece. And the first conductor pin and the second conductor pin are in closer contact to ensure better heat conduction effect.

In this embodiment, the connection between the two conductor pins and the metal heating ring is wrapped in the first heat conductor or the second heat conductor, and the free ends of the two conductor pins are exposed. Placed outside the first heat conductor or the second heat conductor, that is, the connection between the two conductor pins and the metal heating ring is wrapped in the first heat conductor, and the two conductors are The free ends of the pins are exposed outside the second heat conductor; or the connection between the two conductor pins and the metal heating ring is covered in the second heat conductor, and the two conductor pins are The free end is exposed to the outside of the first heat conductor, so that the first heat conductor and the second heat conductor can be completely covered by the heat conductor ceramics, so as to avoid being directly exposed to the outside, that is, to prevent them from contacting smoke In this way, there are no toxic and harmful substances such as heavy metals during the heat conduction process of the electronic cigarette heating assembly, which improves the use safety of the electronic cigarette heating assembly.

In this embodiment, the flow rate of the first ceramic slurry poured into the pouring port is the same as the flow rate of the second ceramic slurry poured into the pouring port, so that the stability of pouring the ceramic slurry can be ensured , so that the overall shape after molding is more stable and reliable.

In this embodiment, the first ceramic slurry and the second ceramic slurry are respectively injected into the mold through the two pouring ports of the mold, so as to respectively form the first heat conduction for jointly covering the metal heating ring. The operation of the body and the second heat conductor specifically includes the following steps:

The first ceramic slurry is injected into the mold through one of the pouring ports of the mold, so as to form the first thermal conductor for covering part of the metal heating ring, and make the first A heat conductor is located at the bottom of the cavity of the mold;

The second ceramic slurry is injected into the mold through the other injection port of the mold to form the second thermal conductor, and the first thermal conductor and the second thermal conductor are used together The metal heating ring is covered, and the second heat conductor is located at the top of the cavity of the mold, and the metal heating ring is located in the middle of the cavity of the mold.

In this way, the internal structure of the heat-conducting ceramic piece formed by connecting the first heat-conducting body and the second heat-conducting body can be more dense and stable, and the heat-conducting effect is more stable, and can also be connected with the metal heating ring of the metal heating piece. And the first conductor pin and the second conductor pin are in closer contact to ensure better heat conduction effect.

S140: Perform a sintering and curing operation on the first thermal conductor and the second thermal conductor simultaneously to obtain an electronic cigarette heating assembly.

By sintering and curing the first thermal conductor and the second thermal conductor, the connection between the first thermal conductor and the second thermal conductor can be made firmer, thereby making the metal heating ring of the metal heating element more tightly connected It is wrapped between the first thermal conductor and the second thermal conductor.

In this embodiment, the first thermal conductor and the second thermal conductor are sintered and cured at a preset sintering temperature; further, the preset sintering temperature is 500°C to 1800°C.

The preparation method of the above-mentioned electronic cigarette heating assembly, the metal heating element is placed in the mold in advance, and then the first ceramic slurry and the second ceramic slurry are respectively injected into the two ends of the mold, so as to be respectively formed and coated with the metal heating element. The first thermal conductor and the second thermal conductor of the component, so that the first thermal conductor and the second thermal conductor cover the metal heating element together, so as to avoid the problem that the metal heating element is directly exposed to the periphery and causes the metal heating element to wear out. When the heating element is energized, heat is generated, and the heat can be conducted to the surfaces of the first thermal conductor and the second thermal conductor respectively; due to the first ceramic slurry and the second ceramic slurry injected into the mold at both ends of the mold, the ceramic slurry is poured into the mold. When the slurry is used, it can be ensured that the injection amount at both ends of the mold is consistent, so that the distance between the surface of the first heat conductor and the metal heating element and the distance between the surface of the second heat conductor and the metal heating ring of the metal heating element are small, even is zero, so that the temperature of the surface of the heating component of the electronic cigarette is more uniform, and the problem of poor heating effect of the electronic cigarette is solved.

In this embodiment, after the first thermal conductor and the second thermal conductor are simultaneously sintered and solidified, the following step is further included: sheathing a heat insulating sleeve into the first thermal conductor and the second thermal conductor. The second thermal conductor is solidified and sintered outside the thermally conductive ceramic piece.

The present invention also provides an electronic cigarette heating assembly. The above-mentioned electronic cigarette heating assembly is prepared by using the preparation method of the electronic cigarette heating assembly described in any of the above embodiments.

The present invention also provides an electronic cigarette. The above electronic cigarette includes the electronic cigarette heating assembly described in any of the above embodiments, and further includes a cigarette, and the electronic cigarette heating assembly is used for heating the cigarette.

In one embodiment, the electronic cigarette is prepared by using the following preparation method of an electronic cigarette heating assembly. The electronic cigarette heating assembly includes the following steps: providing a metal heating element, which includes a metal heating ring and two electric cigarettes respectively electrically connected to the metal heating ring. Conductor pins; place the metal heating element in the mold; respectively inject the first ceramic slurry and the second ceramic slurry into the mold through the two pouring ports of the mold, so as to respectively form the first ceramic slurry for jointly covering the metal heating ring A thermal conductor and a second thermal conductor, the first thermal conductor is connected to the second thermal conductor; the first thermal conductor and the second thermal conductor are simultaneously sintered and cured to obtain an electronic cigarette heating assembly; please refer to FIG. 2 and FIG. 3 In one embodiment, the electronic cigarette 10A includes an electronic cigarette heating assembly 10, and also includes a cigarette 20. The electronic cigarette heating assembly 10 is used to heat the cigarette 20. Please refer to FIG. 2, FIG. 3 and FIG. 4 together. In this embodiment Among them, the electronic cigarette heating assembly 10 includes: a metal heating element 100, a thermally conductive ceramic element 200 and an insulating sleeve 300, the metal heating element 100 is wrapped in the thermally conductive ceramic element 200, and the external cigarette 20 is in contact with the metal heating element 100. The metal heating element 100 is used to generate heat when electrified, and the heat generated by the metal heating element 100 is used to transfer the heat to the thermally conductive ceramic element 200. The cigarette stick 20 is heated, and after the cigarette stick 20 is heated, it can smoke, and the smoke is used for the user to smoke. The thermal insulation sleeve 300 is sleeved outside the thermally conductive ceramic piece 200. On the one hand, the thermal insulation bushing 300 can greatly reduce the direct transfer of the heat of the thermally conductive ceramic piece 200 to the electronic cigarette housing 30, thereby preventing the overall structure of the electronic cigarette 10A from being overheated. On the other hand, the heat insulating sleeve 300 can also lock the heat dissipated from the thermally conductive ceramic piece 200 in the heat insulating sleeve 300 , so that the heat dissipated by the heat insulating sleeve 300 can be concentratedly used to heat the cigarettes 20 and fresh air being inhaled. The metal heating element 100 includes a metal heating ring 110, a first conductor pin 120 and a second conductor pin 130. The first conductor pin 120 and the second conductor pin 130 are respectively electrically connected to the metal heating ring 110. The pins 120 and the second conductor pins 130 are used as electrode parts of the electronic cigarette, and are used to connect to the positive and negative electrodes of an external power supply respectively, so as to provide electrical energy to the metal heating ring 110 , thereby making the metal heating ring 110 electrified to generate heat. The thermally conductive ceramic member 200 includes a first thermal conductor 210 and a second thermal conductor 220 . The first thermal conductor 210 and the second thermal conductor 220 are connected to form an integrated thermally conductive ceramic structure to better cover the metal heating ring 110 . An embedded cavity 230 is provided at the connection position of the first thermal conductor 210 and the second thermal conductor 220, and the metal heating ring 110 is accommodated in the embedded cavity 230. In this way, the metal heating ring 110 can be better covered. The outer wall of the heating ring 110 in the thermally conductive ceramic piece 200 has a certain thickness, and the thermally conductive ceramic piece 200 has a high degree of wear resistance. The metal heating ring 110 can be better protected, and there is no need to apply additional sintered layers such as sintered glass glue, so that the cigarette 20 does not need to be in contact with the metal heating ring 110, and the risk of introducing harmful substances such as heavy metals is eliminated. The heat-conducting ceramic piece 200 is provided with an intake flow channel 240. Preferably, the intake flow channel 340 and the metal heating ring 110 are evaded, that is, the ceramic inner wall of the intake flow channel in the heat-conducting ceramic piece 200 is shared with the outer wall of the metal heating ring. In order to completely isolate the metal heating ring 110 from the thermally conductive ceramic member 200 , the intake runner 240 runs through the first thermal conductor 210 and the second thermal conductor 220 in sequence. One end is directly communicated with the cigarette 20, so that when the heat-conducting ceramic piece 200 is in a heat-conducting state, the new incoming air from the outside circulates along the air intake runner 240. It is heated, and the new air from the outside must only enter through the air intake runner 240. This is because the heat-conducting ceramic piece 200 is covered and locked by the heat insulating sleeve 300, and the new air from the outside cannot flow out from the gap between the two, ensuring that The integrated synchronous heating of the new incoming air from the outside, the heating path is more optimized, there is no temperature difference and time difference, the thermal energy efficiency is higher, and the energy saving effect is better. The heat insulating sleeve 300 is sleeved outside the thermally conductive ceramic piece 200. On the one hand, the heat insulating sleeve 300 can greatly reduce the direct transfer of the heat of the thermally conductive ceramic piece 200 to the casing of the electronic cigarette, so as to prevent the overall structure of the electronic cigarette from being overheated. In one aspect, the heat insulating sleeve 300 can also lock the heat dissipated from the thermally conductive ceramic piece 200 in the heat insulating sleeve 300, so that the heat dissipated by the heat insulating sleeve 300 can be concentratedly used to heat the cigarettes 20 and be Inhale fresh air. Specifically, the heat insulating sleeve 300 has a cylindrical structure, and the inner wall of the heat insulating sleeve 300 is closely attached to the thermally conductive ceramic member 200 , so that the structural stability is better, and the heat insulating and energy saving effect is also better. In order to make the newly entering air flowing through the air intake channel and scouring the cigarette in sequence to mix the smoke generated by the cigarette and smoothly enter into the mouthpiece of the electronic cigarette, it is generally necessary to make a certain gap between the cigarette and the thermal insulation sleeve. , it means that the diameter of the thermally conductive ceramic part is larger than that of the cigarette, because the diameter of the thermally conductive ceramic part needs to be the same as the inner diameter of the thermal insulation sleeve, so that the combination of the two has higher structural stability. In this case, the thermal conductivity It is difficult for the outer edge of the ceramic piece to have a better direct contact with the cigarette, which will cause a loss of part of the heat energy, so that the cigarette cannot be fully heated. When the electronic cigarette is inhaled, the electronic cigarette will more or less displace in the thermal insulation sleeve when the electronic cigarette is shaking, which will affect the contact effect between the cigarette and the thermally conductive ceramic parts. In order to more effectively improve the thermal energy utilization of the cigarettes on the heat-conducting ceramics and reduce the displacement problem of the cigarettes in the heat-insulating sleeve, so as to improve the contact effect between the cigarettes and the heat-conducting ceramics, in this embodiment, the first heat-conducting body An embedded groove is opened on the end away from the second heat conductor, and the diameter of the embedded groove is used to match the diameter of the cigarette, so that when the cigarette is inserted, the head of the cigarette is clamped in the embedded groove. In the groove, firstly, the inner wall of the embedded groove can more fully heat the cigarette, that is, the contact surface area is increased, and at the same time, since the diameter of the embedded groove is adapted to the diameter of the cigarette, the embedded groove The inner wall of the cigarette can better fix the cigarette, and can reduce the displacement problem of the cigarette in the thermal insulation sleeve, so as to improve the contact effect between the cigarette and the heat-conducting ceramic piece. Further, since the diameter of the embedded groove is used to match the diameter of the cigarette, the air flowing through the gap between the cigarette and the embedded groove will be relatively obstructed, affecting the smoothness of the user's smoking. In the example, the inner wall of the embedded groove is also provided with a spiral air intake channel, the spiral air intake channel extends around the axial direction of the first heat conductor, one end of the spiral air intake channel extends to the bottom of the embedded groove, and the other end of the spiral air intake channel extends to the bottom of the embedded groove. One end extends to the end face of the end of the first heat conductor away from the second heat conductor, so that when the newly entered air flows out of the intake runner, most of the newly entered air will spiral up and flow along the spiral intake channel, so , which can not only ensure the smoothness of the air when it flows, so as to ensure the smoothness of the user's smoking. Similarly, the spiral upward flow method can more fully wash the surface of the cigarette, take away more volatilized smoke, and make the air The flow path is more reasonable, and the smoke output is fuller and richer. Further, the inner diameter of the heat insulating sleeve gradually increases from the end close to the thermally conductive ceramic piece to the end far from the thermally conductive ceramic piece, the inner diameter of the embedded groove gradually increases from the bottom to the opening direction, and the inner diameter of the spiral air inlet channel is described as follows: The bottom of the embedded groove gradually decreases toward the opening direction of the embedded groove, so, firstly, since the inner diameter of the heat insulation sleeve gradually increases from the end close to the thermally conductive ceramic piece to the end away from the thermally conductive ceramic piece, and the inner diameter of the embedded groove increases from The bottom gradually increases in the direction of the opening, so that the bottom of the embedded groove and the bottom of the heat insulating sleeve can hold the cigarette more tightly, and the contact area can also be increased, thereby improving the thermal contact effect. The contact between the inner wall of the embedded groove and the inner wall of the thermal insulation sleeve is relatively dense, and the smoothness of the air flow decreases. The inner diameter of the channel at the bottom of the embedded groove is relatively larger than the opening of the embedded groove, which greatly alleviates the problem and achieves both air flow smoothness and heating performance.

Compared with the prior art, the present invention has at least the following advantages:

First of all, due to the dual heating function of the electronic cigarette heating component, one of the heating methods is the direct contact heating of the cigarette by the heater, that is, conduction heating; the other heating method is air brush heating, that is, the user During the smoking process, the newly entering air from the outside will flow through the heater in advance, and the heater will heat the air flowing through it. Take it out to the mouthpiece for users to smoke. For the thermally conductive ceramic parts with a cylindrical structure, the metal heating parts are generally integrated and mounted on the inner surface of the thermally conductive ceramics by means of patch or circuit printing. Collected together into the cigarette holder, that is, the newly entered air will flow through the inner and outer surfaces of the cylindrical thermally conductive ceramics. The inner surface of the thermally conductive ceramics is higher than the outer surface, resulting in the newly entered air being divided into two strands and there is a temperature difference, which is not conducive to The effective use of thermal energy, that is, the energy saving effect is poor. Since the thermally conductive ceramic piece in this case is encased with a metal heating ring, the overall thermal conductivity of the thermally conductive ceramic piece is quite uniform and stable, and the newly entering air from the outside can only circulate along the intake runner. It will be heated, and the new air from the outside must only enter through the intake runner. This is because the heat-conducting ceramic parts are covered and locked by the heat-insulating sleeve, and the new air from the outside cannot flow out from the gap between the two to ensure that The integrated synchronous heating of the new incoming air from the outside is adopted, the heating path is more optimized, there is no temperature difference and time difference, the thermal energy efficiency is higher, and the energy saving effect is better.

Secondly, in the preparation of the electronic cigarette heating assembly in this case, the metal heating element is first placed in the mold, and then the first ceramic slurry and the second ceramic slurry are respectively injected into the two ends of the mold to form a common coating respectively. For the first thermal conductor and the second thermal conductor of the metal heating element, the first thermal conductor and the second thermal conductor together cover the metal heating element, so as to avoid the problem that the metal heating element is directly exposed to the periphery and causes the metal heating element to wear , when the metal heating element is energized, heat is generated, and the heat can be conducted to the surfaces of the first heat conductor and the second heat conductor respectively.

Finally, since the heating element is integrated and mounted on the surface of the thermally conductive ceramic by means of patch or circuit printing, the heating path of the metal heating element itself is not reasonable when it conducts electricity and generates heat. This is because there are two heating areas. , and the two heating time differences. For the two heating areas, due to the thin thickness of the sintered layer, the temperature of the sintered layer directly above the metal heating element must be much higher than the rest of the sintered layers, because the heat of the remaining sintered layers is still It needs to be transmitted through the thermally conductive ceramic parts. For the difference between the two heating times, the temperature of the sintered layer directly above the metal heating part must be the fastest. It also needs to be transmitted through thermally conductive ceramics, so there is a problem of time lag. Therefore, there is a problem that the heating path is not reasonable enough. However, in this case, the first ceramic slurry and the second ceramic slurry are respectively injected into the mold at both ends of the mold. When the glue is poured, it can be ensured that the injection amount at both ends of the mold is the same, so that the end face of the first heat conductor is connected to the metal heating element. The distance between the metal heating ring of the electronic cigarette and the distance between the end face of the second heat conductor and the metal heating ring of the metal heating element are relatively small, even zero, so that the temperature of the surface of the electronic cigarette heating assembly is more uniform, the overall heating path is optimized, and the solution to the problem is solved. This solves the problem of poor heating effect of electronic cigarettes.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (30)

A preparation method of an electronic cigarette heating assembly, characterized in that it comprises the following steps: A metal heating element is provided, which includes a metal heating ring and two conductor pins respectively electrically connected to the metal heating ring; placing the metal heating element in the mold; The first ceramic slurry and the second ceramic slurry are respectively injected into the mold through the two pouring ports of the mold, so as to respectively form a first thermal conductor and a second thermal conductor for jointly covering the metal heating ring , the first heat conductor is connected to the second heat conductor; The first thermal conductor and the second thermal conductor are simultaneously sintered and solidified to obtain an electronic cigarette heating assembly. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the connection between the two conductor pins and the metal heating ring is covered with the first thermal conductor or the second thermal conductor Inside the body, the free ends of the two conductor pins are exposed outside the first thermal conductor or the second thermal conductor. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the two conductor pins are both conductive metal wires. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the material of the metal heating ring is a conductive heating material. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the shape of the first heat conductor and the shape of the second heat conductor are both cylindrical, so that the formed electronic cigarette heating assembly is in the shape of a cylinder. The cylindrical shape enables the heat of the metal heating element to be uniformly conducted to the surfaces of the first thermal conductor and the second thermal conductor. The preparation method of the electronic cigarette heating assembly according to claim 1, characterized in that, before the operation of providing the metal heating element, the preparation method of the electronic cigarette heating assembly further comprises the following steps: The metal heating element is formed. The method for preparing an electronic cigarette heating assembly according to claim 6, wherein the operation of forming the metal heating element specifically includes the following steps: Casting and forming the metal heating ring; respectively casting the first conductor pin and the second conductor pin; The first conductor pin and the second conductor pin are respectively welded to the metal heating ring. The method for preparing an electronic cigarette heating assembly according to claim 7, wherein the materials of the first conductor pins and the second conductor pins are both conductive materials. The preparation method of electronic cigarette heating assembly according to claim 4, is characterized in that, the described operation of forming described metal heating element specifically comprises the following steps: The first molten metal is poured in the pouring mold to obtain a metal heating ring; The second molten metal is poured into the casting mold, and the first conductor pin and the second conductor pin are simultaneously formed on the metal heating ring. The method for preparing an electronic cigarette heating assembly according to claim 9, wherein the second molten metal is poured into a pouring mold, and the metal heating ring is connected to the first conductor pin and the second metal heating ring respectively. The connection points of the conductor pins are firmly combined together by means of cooling crystal reorganization after pouring, so as to form the first conductor pin and the second conductor pin on the metal heating ring simultaneously. The method for preparing an electronic cigarette heating assembly according to claim 10, wherein the joint is covered in the first thermal conductor and the second thermal conductor which are sintered and solidified. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the metal heating element is a metal heating element or a ceramic metal heating element. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the first ceramic slurry and the second ceramic slurry are both thermally conductive ceramic slurries. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the operation of respectively injecting the first ceramic slurry and the second ceramic slurry in the mold through the two injection ports of the mold specifically includes the following steps: Follow the steps below: The first ceramic slurry is poured into the first molding cavity of the mold through the first pouring port of the mold to perform a first pouring operation, wherein the mold further has a second molding cavity, and the mold is placed in the mold. A push-up spacer is arranged between the first molding cavity and the second molding cavity, and the push-up spacer is used to separate the first molding cavity and the second molding cavity, and the metal The metal heating ring of the heating element is held against the ejecting spacer; in the first pouring operation, the mold is in a vertical state, the first molding cavity is located at the bottom, and the first molding cavity is located at the bottom. Filling with the first ceramic slurry and immersing the metal heating ring of the metal heating element, the second molding cavity is located at the top; pouring the second ceramic slurry into the second molding cavity of the mold through the second pouring port of the mold to perform a second pouring operation; The ejecting spacer is controlled to move, and the first molding cavity is completely communicated with the second molding cavity. Based on the action of gravity, the first ceramic slurry in the first molding cavity will not flow into the In the second molding cavity, but the second ceramic slurry in the second molding cavity will flow down and fill up the ejection spacer to form a blank area, so that the second ceramic slurry and the the metal heating ring of the metal heating element is in contact; Compensately pour the second ceramic slurry through the second pouring port of the mold to fill the second molding cavity. The method for manufacturing an electronic cigarette heating assembly according to claim 1, wherein the flow rate of the first ceramic slurry poured into the pouring port and the flow rate of the second ceramic slurry poured into the pouring port same. The method for preparing an electronic cigarette heating assembly according to claim 3, wherein the first ceramic slurry and the second ceramic slurry are respectively injected into the mold through two pouring ports of the mold to form the The operation of covering the first thermal conductor and the second thermal conductor of the metal heating ring together includes the following steps: The first ceramic slurry is injected into the mold through one of the pouring ports of the mold, so as to form the first thermal conductor for covering part of the metal heating ring, and make the first A heat conductor is located at the bottom of the cavity of the mold; The second ceramic slurry is injected into the mold through the other injection port of the mold to form the second thermal conductor, and the first thermal conductor and the second thermal conductor are used together The metal heating ring is covered, and the second heat conductor is located at the top of the cavity of the mold, and the metal heating ring is located in the middle of the cavity of the mold. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein the simultaneous sintering and curing operation of the first thermal conductor and the second thermal conductor is as follows: The first thermal conductor and the second thermal conductor are sintered and cured at a sintering temperature of 500°C to 1800°C. The method for preparing an electronic cigarette heating assembly according to claim 1, wherein after the sintering and curing operation is performed on the first thermal conductor and the second thermal conductor at the same time, the heating element of the e-cigarette heating assembly is The preparation method also includes the following steps: The heat insulating sleeve is sheathed outside the heat conducting ceramic piece in which the first heat conducting body and the second heat conducting body are solidified and sintered into one body. An electronic cigarette heating assembly, characterized in that it is prepared by using the preparation method of an electronic cigarette heating assembly according to any one of claims 1 to 18. An electronic cigarette, characterized in that it comprises the electronic cigarette heating assembly according to claim 19, and further comprises a cigarette, and the electronic cigarette heating assembly is used for heating the cigarette. The electronic cigarette according to claim 20, wherein the electronic cigarette heating assembly comprises a metal heating element, a thermally conductive ceramic element and a heat insulating sleeve, and a part of the metal heating element is wrapped in the thermally conductive ceramic element, The heat-insulating sleeve is sleeved outside the heat-conducting ceramic piece, and the external cigarette is in contact with the metal heating piece. The heat is used to transfer to the thermally conductive ceramic piece, and the heat in the thermally conductive ceramic piece is uniformly transferred to the cigarette for heating the cigarette. The electronic cigarette according to claim 21, wherein the metal heating element comprises a metal heating ring, a first conductor lead and a second conductor lead, the first conductor lead and the second conductor lead The legs are respectively electrically connected to the metal heating ring, and the first conductor pins and the second conductor pins are used as the electrode parts of the electronic cigarette to be connected to the positive and negative electrodes of the external power supply respectively, so as to provide The metal heating ring provides electrical energy, so that the metal heating ring is energized to generate heat. The electronic cigarette according to claim 21, wherein the thermally conductive ceramic member comprises a first thermal conductor and a second thermal conductor, the first thermal conductor is connected to the second thermal conductor, and the first thermal conductor and the second thermal conductor are connected to each other. The thermal conductor covers part of the metal heating ring. The electronic cigarette according to claim 23, wherein an embedded cavity is provided at the connection between the first thermal conductor and the second thermal conductor, and part of the metal heating ring is accommodated in the embedded cavity Inside. The electronic cigarette according to claim 23, wherein an embedded groove is formed on the end of the first heat conducting body away from the second heat conducting body, and the diameter of the embedded groove is the same as the diameter of the cigarette. diameter to match. The electronic cigarette according to claim 25, wherein the inner wall of the embedded groove is further provided with a spiral air intake channel, the spiral air intake channel extends around the axial direction of the first heat conductor, and the spiral air intake channel extends axially around the first heat conductor. One end of the air inlet channel extends to the bottom of the embedded groove, and the other end of the spiral air inlet channel extends to the end surface of the end of the first heat conductor away from the second heat conductor. The electronic cigarette according to claim 26, wherein the inner diameter of the heat insulating sleeve gradually increases from an end close to the thermally conductive ceramic piece to an end away from the thermally conductive ceramic piece, and the embedded groove has an inner diameter. The inner diameter gradually increases from the bottom to the opening direction, and the inner diameter of the spiral air inlet channel gradually decreases from the bottom of the embedding groove to the opening direction of the embedding groove. The electronic cigarette according to claim 23, wherein the first thermal conductor and the second thermal conductor have a one-piece thermally conductive ceramic structure. The electronic cigarette according to claim 23, wherein an intake flow channel is opened in the thermally conductive ceramic piece, the intake flow channel and the metal heating ring are arranged to avoid positions, and the intake flow channel sequentially runs through all of them. For the first heat conductor and the second heat conductor, one end of the intake flow channel is communicated with the outside air, and the other end of the intake flow channel is directly communicated with the cigarette. The electronic cigarette according to claim 21, wherein the heat insulating sleeve is a cylindrical structure, and the inner wall of the heat insulating sleeve is tightly attached to the thermally conductive ceramic piece.

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