Electronic cigarette heater and electronic cigarette prepared by the preparation method of electronic cigarette heater

Abstract

The application relates to an electronic cigarette heater prepared by an electronic cigarette heater preparation method and an electronic cigarette, and the electronic cigarette heater comprises a metal heating piece, a heat-conducting ceramic body and a heat insulation piece. The metal heating piece comprises a heating part, a first conductive part and a second conductive part, and the first conductive part and the second conductive part are electrically connected with the heating part respectively. The heat-conducting ceramic body comprises a first heat-conducting piece and a second heat-conducting piece connected with the first heat-conducting piece, a containing cavity is arranged at the connecting position of the first heat-conducting piece and the second heat-conducting piece, the heating part is contained in the containing cavity, a gas guiding channel is arranged in the heat-conducting ceramic body, and the gas guiding channel sequentially penetrates through the first heat-conducting piece and the second heat-conducting piece. The heat insulation piece is sleeved outside the heat-conducting ceramic body. The integrated synchronous heating of the newly-inhaled air from the outside can be ensured, 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.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic cigarettes, in particular to an electronic cigarette heater prepared by an electronic cigarette heater preparation method and an electronic cigarette. BACKGROUND

[0002] As one of the substitutes for traditional cigarettes, electronic cigarettes have a wide audience in the market. Since the emergence of electronic cigarettes, in-depth research and development work has never stopped, among which, the heating safety of electronic cigarettes has attracted much attention.

[0003] For cigarette-type electronic cigarettes, the heater generally includes a heating element and a heat-conducting element. The heat-conducting element of the traditional cigarette-type electronic cigarette is heat-conducting ceramic, which has various shapes. The heating element is a metal heating element, which also has various shapes. The two are combined to heat the cigarette and generate smoke for the user to smoke. Secondly, for electronic cigarettes of the oil type, the core heating element of the heater is generally a spiral metal heating wire, but it needs to be in direct contact with the oil.

[0004] However, for the heater of the traditional cigarette-type electronic cigarette, the heating element is generally in a sheet or strip structure, which is integrated and attached to the surface of the heat-conducting ceramic by means of patching or circuit printing. Then, it is packaged and sintered with glass glue and other materials to play a protective role and avoid direct contact between the metal heating element and the cigarette, preventing the introduction of harmful substances such as heavy metals in the heating element itself, and ensuring the heating safety performance. However, such a heater still has the following problems:

[0005] The electronic cigarette heater has a double-heating function, that is, one heating method is direct contact heating of the heater to the cigarette, that is, conduction heating; the other heating method is air brush heating, that is, during the smoking process, the incoming air from the outside will flow through the heater first, the heater heats the air flowing through it, and the heated air then flows through the cigarette, washing the cigarette, heating the cigarette, and bringing the smoke to the mouthpiece for the user to smoke. For the cylindrical structure of the heat-conducting ceramic, the metal heating element is generally integrated and attached to the inner surface of the heat-conducting ceramic by means of patching or circuit printing. The incoming air will flow through the inner and outer surfaces of the cylindrical heat-conducting ceramic, and finally flow into the mouthpiece together with the smoke, that is, the incoming air will flow through the inner and outer surfaces of the cylindrical heat-conducting ceramic, the inner surface of the heat-conducting ceramic is higher than the outer surface, resulting in two streams of incoming air with a temperature difference, which is not conducive to the effective use of heat energy, that is, the energy-saving effect is poor. SUMMARY

[0006] The electronic cigarette heater prepared by the preparation method of the electronic cigarette heater has high heat energy utilization rate and good energy-saving effect.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] An electronic cigarette heater prepared by a preparation method of the electronic cigarette heater comprises:

[0009] A metal heating piece comprises a heating part, a first conductive part and a second conductive part, and the first conductive part and the second conductive part are electrically connected with the heating part respectively;

[0010] A heat-conducting ceramic body comprises a first heat-conducting piece and a second heat-conducting piece connected with the first heat-conducting piece, a containing cavity is arranged at the connecting position of the first heat-conducting piece and the second heat-conducting piece, the heating part is contained in the containing cavity, a gas guiding channel is arranged in the heat-conducting ceramic body, and the gas guiding channel sequentially penetrates through the first heat-conducting piece and the second heat-conducting piece;

[0011] A heat insulation piece is sleeved outside the heat-conducting ceramic body.

[0012] In one of the embodiments, the heat-conducting ceramic body further comprises a first containing cavity and a second containing cavity which are respectively communicated with the containing cavity, the connecting position of the first conductive part and the heating part is contained in the first containing cavity, the connecting position of the second conductive part and the heating part is contained in the second containing cavity, and the free end of the first conductive part and the free end of the second conductive part are exposed outside the heat-conducting ceramic body.

[0013] In one of the embodiments, the first containing cavity and the second containing cavity are arranged in the first heat-conducting piece;

[0014] Or the first containing cavity and the second containing cavity are arranged in the second heat-conducting piece;

[0015] Or the first containing cavity is arranged in the first heat-conducting piece, and the second containing cavity is arranged in the second heat-conducting piece;

[0016] Or the first containing cavity is arranged in the second heat-conducting piece, and the second containing cavity is arranged in the first heat-conducting piece.

[0017] In one of the embodiments, a temperature sensing piece is further arranged, and the temperature sensing piece is connected with the heat-conducting ceramic body.

[0018] In one of the embodiments, a plurality of gas guiding channels are arranged in the heat-conducting ceramic body, and the gas guiding channels are arranged in parallel with each other.

[0019] In one of the embodiments, the heating part is a circular ring structure, the first heat conducting part and the second heat conducting part are cylindrical structures with the same structure, and the distance between the heating part and the end surface of the first heat conducting part is the same as the distance between the heating part and the end surface of the second heat conducting part.

[0020] An electronic cigarette comprises the electronic cigarette heater of any one of the above embodiments, and further comprises a cigarette, a shell and a power supply, the cigarette is inserted into the electronic cigarette heater, the power supply is electrically connected with the electronic cigarette heater, and the electronic cigarette heater and the power supply are arranged in the shell.

[0021] A preparation method of an electronic cigarette heater comprises the following steps:

[0022] A first ceramic slurry is injected into the mold to form a first heat conducting part;

[0023] The first heat conducting part is subjected to a solidification treatment;

[0024] A metal heating part is formed in the mold, and the metal heating part is connected with the first heat conducting part;

[0025] A second ceramic slurry is injected into the mold to form a second heat conducting part connected with the metal heating part;

[0026] The second heat conducting part is subjected to a solidification treatment, so that the second heat conducting part is connected with the first heat conducting part to form a heat conducting ceramic body, and the heat conducting ceramic body is wrapped outside the metal heating part to obtain an electronic cigarette heater.

[0027] In one of the embodiments, the first ceramic slurry and the second ceramic slurry are made of the same material.

[0028] In one of the embodiments, the first ceramic slurry and the second ceramic slurry are both heat conducting ceramic slurries.

[0029] Compared with the prior art, the present application has at least the following advantages:

[0030] Firstly, since the electronic cigarette heater has a double heating function, one of which is direct contact heating of the heater to the cigarette, that is, conduction heating; the other is air brush heating, that is, during the user's smoking process, the incoming air from the outside will first flow through the heater, and the heater heats the air flowing through it. The heated air flows through the cigarette again, washing the cigarette, heating the cigarette, and bringing the smoke to the mouthpiece for the user to smoke. For the heat-conducting ceramic of the cylindrical structure, the metal heating element is generally integrated and attached to the inner surface of the heat-conducting ceramic by patching or circuit printing. The incoming air will flow through the inner and outer surfaces of the heat-conducting ceramic, and finally flow into the mouthpiece together with the smoke, that is, the incoming air will flow through the inner and outer surfaces of the cylindrical heat-conducting ceramic. The inner surface of the heat-conducting ceramic is higher than the outer surface, resulting in two streams of incoming air with a temperature difference, which is not conducive to the efficient use of heat energy, that is, the energy-saving effect is poor. The heat-conducting ceramic body of the case has an inner heating part, and the overall heat-conducting effect of the heat-conducting ceramic body is quite uniform and stable. The incoming air from the outside can only flow through the air guide channel. In this way, when the incoming air from the outside flows through the air guide channel, it will be heated. Moreover, the incoming air from the outside can only enter the air guide channel because the heat-conducting ceramic body is locked by the heat insulation part, and the incoming air from the outside cannot flow out of the gap between the two. This ensures the synchronous heating of the incoming air from the outside, optimizes the heating path, and has no temperature difference and time difference, higher heat energy efficiency, and better energy-saving effect.

[0031] Secondly, the electronic cigarette heater of the case is prepared by first placing the metal heating element in the mold, then injecting the first ceramic slurry and the second ceramic slurry into the two ends of the mold respectively, and then forming the first heat-conducting part and the second heat-conducting part that jointly cover the metal heating element. In this way, the problem of direct exposure of the metal heating element to the outside environment is avoided, and the metal heating element generates heat when electrified, and the heat can be conducted to the surfaces of the first heat-conducting part and the second heat-conducting part respectively.

[0032] Finally, since the heating element is integrated and attached on the surface of the heat-conducting ceramic by patching or circuit printing, the heating path of the metal heating element itself is not reasonable when it conducts electricity and generates heat, because there are two heating areas and two heating time differences. For the two heating areas, the temperature of the sintered layer directly above the metal heating element is definitely much higher than that of the remaining sintered layers, because the heat of the remaining sintered layers needs to be transmitted through the heat-conducting ceramic. For the two heating time differences, the temperature of the sintered layer directly above the metal heating element is definitely the fastest, which is directly transmitted by the metal heating element, but the heat of the remaining sintered layers needs to be transmitted through the heat-conducting ceramic, so there is a problem of time lag. Therefore, it will cause the problem of unreasonable heating path. However, the first ceramic slurry and the second ceramic slurry are injected into the mold at both ends of the mold in the case, and the injection amount at both ends of the mold can be ensured to be consistent when the glue is filled, so that the distance between the end surface of the first heat-conducting element and the metal heating element and the distance between the end surface of the second heat-conducting element and the metal heating element are small, even zero, so that the temperature of the surface of the electronic cigarette heater is more uniform, the overall heating path is optimized, and the problem of poor heating effect of the electronic cigarette is solved. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0034] Figure 1 It is a structural schematic diagram of an electronic cigarette heater in an embodiment.

[0035] Figure 2 It is a structural schematic diagram of a metal heating element and a heat-conducting ceramic body. Figure 1 It is another view of the structural schematic diagram of the electronic cigarette heater.

[0036] Figure 3 It is an exploded view of the electronic cigarette heater. Figure 1

[0037] Figure 4 It is a structural schematic diagram of a metal heating element and a heat-conducting ceramic body. Figure 3 It is another view of the structural schematic diagram of the metal heating element and the heat-conducting ceramic body.

[0038] Figure 5 It is another view of the structural schematic diagram of the metal heating element and the heat-conducting ceramic body. Figure 4 It is another view of the structural schematic diagram of the metal heating element and the heat-conducting ceramic body.

[0039] Figure 6 It is another view of the structural schematic diagram of the metal heating element and the heat-conducting ceramic body. Figure 5 ​A cross-sectional view of the metal heating element and the heat-conductive ceramic body along the line A-A.

[0040] Figure 7 A flow chart of the steps of the method of making the electronic cigarette heater in one embodiment. DETAILED DESCRIPTION

[0041] For the purposes of this disclosure, reference will be made to the accompanying drawings which form a part of the specification. The drawings are provided for purposes of illustration only and merely demonstrate various aspects of the present application. The present application can be implemented in any suitable form and can not necessarily be confined to the embodiments described in this disclosure. Rather, this disclosure is intended to cover any alternatives, modifications, and equivalents.

[0042] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can 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 can also be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] 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 application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] Reference will now be made to the drawings, in which Figure 1 and Figure 2Fig. 1 is a schematic structural diagram of an electronic cigarette heater 10 prepared by a preparation method of an electronic cigarette heater in an embodiment, the electronic cigarette heater 10 comprising: a metal heating element 100, a heat-conducting ceramic body 200, and a heat insulation element 300, the metal heating element 100 being wrapped in the heat-conducting ceramic body 200, an external cigarette being in contact with the metal heating element 100, the metal heating element 100 being used to generate heat when powered, the heat generated by the metal heating element 100 being used to be transferred to the heat-conducting ceramic body 200, the heat in the heat-conducting ceramic body 200 being uniformly transferred to the cigarette to heat the cigarette, the cigarette being heated to generate smoke, the smoke being used for a user to smoke. The heat insulation element 300 is sleeved outside the heat-conducting ceramic body 200, the heat insulation element 300 can greatly reduce the heat of the heat-conducting ceramic body 200 directly transferred to the electronic cigarette shell, avoiding the whole structure of the electronic cigarette being too hot, on the other hand, the heat insulation element 300 can also lock the heat lost by the heat-conducting ceramic body 200 in the heat insulation element 300, so that the heat lost by the heat insulation element 300 is concentrated to heat the cigarette and the fresh air inhaled.

[0045] Please refer to Figure 3 The metal heating element 100 comprises a heating part 110, a first conductive part 120, and a second conductive part 130, the first conductive part 120 and the second conductive part 130 being electrically connected with the heating part 110 respectively, the first conductive part 120 and the second conductive part 130 being used as electrode parts of the electronic cigarette to be connected with positive and negative poles of an external power supply respectively to provide electric energy for the heating part 110, so that the heating part 110 generates heat when powered.

[0046] Please refer to Figure 3 and Figure 4 The heat-conducting ceramic body 200 comprises a first heat-conducting element 210 and a second heat-conducting element 220, the first heat-conducting element 210 being connected with the second heat-conducting element 220 to form an integrated heat-conducting ceramic structure to better wrap the heating part 110. Please refer to Figure 5 and Figure 6 The first heat-conducting element 210 and the second heat-conducting element 220 are provided with a containing cavity 230 at a connecting position, the heating part 110 being contained in the containing cavity 230, so that the heating part 110 can be better wrapped, since the outer wall of the heating part 110 in the heat-conducting ceramic body 200 has a certain thickness, and the wear resistance of the heat-conducting ceramic body 200 is also higher, compared with a thin layer of glass glue or other materials brushed and sintered, the heat-conducting ceramic body 200 can better protect the heating part 110, and there is no need to additionally brush and sinter a sintering layer of glass glue or the like, so that the cigarette does not need to be in contact with the heating part 110, and the risk of introducing harmful substances such as heavy metals is eliminated.

[0047] Please refer to Figure 4, the heat-conducting ceramic body 200 is provided with a gas guide channel 240, preferably, the gas guide channel 240 is arranged away from the heating part 110, that is, the ceramic inner wall of the gas guide channel in the heat-conducting ceramic body 200 shares the outer wall of the heating part, so that the heating part 110 is completely isolated in the heat-conducting ceramic body 200, the gas guide channel 240 sequentially penetrates the first heat-conducting part 210 and the second heat-conducting part 220, one end of the gas guide channel 240 is in communication with the outside air, and the other end of the gas guide channel 240 is directly in communication with the cigarette, so that when the heat-conducting ceramic body 200 is in a heat-conducting state, the newly incoming air from the outside flows along the gas guide channel 240, so that when the newly incoming air from the outside flows through the gas guide channel 240, it will be heated, and the newly incoming air from the outside can only enter the gas guide channel 240, because the heat-conducting ceramic body 200 is locked by the heat insulation part 300, the newly incoming air from the outside cannot flow out from the gap between the two, ensuring the integrated and synchronous heating of the newly 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.

[0048] Further, the first heat-conducting part is provided with a first gas guide hole, the second heat-conducting part is provided with a second gas guide hole, the first gas guide hole and the second gas guide hole have the same diameter and are completely communicated to form a gas guide channel, so that the smoothness of the newly incoming air from the outside and the heating efficiency of the air can be ensured.

[0049] Please refer to Figure 2 The heat insulation part 300 is sleeved outside the heat-conducting ceramic body 200, on the one hand, the heat insulation part 300 can greatly reduce the direct heat transfer of the heat-conducting ceramic body 200 to the electronic cigarette shell, avoiding that the overall structure of the electronic cigarette is too hot, on the other hand, the heat insulation part 300 can also lock the heat dissipated from the heat-conducting ceramic body 200 in the heat insulation part 300, so that the heat dissipated from the heat insulation part 300 is concentrated for heating the cigarette and the freshly inhaled air. Specifically, the heat insulation part 300 is a cylindrical structure, the inner wall of which is tightly fitted with the heat-conducting ceramic body 200, so that the structural stability is better, and the heat insulation and energy saving effect is also better.

[0050] In one embodiment, please refer to Figure 6The heat-conducting ceramic body 200 is further provided with a first accommodating cavity 250 and a second accommodating cavity 260, which are respectively in communication with the containing cavity 230. The connecting part of the first conductive part 120 and the heating part 110 is accommodated in the first accommodating cavity 250, and the connecting part of the second conductive part 130 and the heating part is accommodated in the second accommodating cavity 260. The free end of the first conductive part 120 and the free end of the second conductive part 130 are both exposed outside the heat-conducting ceramic body. In this way, on the one hand, the heating part 110 can be completely isolated in the heat-conducting ceramic body 200, and on the other hand, due to the small and compact overall structure of the heating part 110, the first conductive part 120 and the second conductive part 130 also have the same problem of small and compact structure design. The connecting parts of the two different materials with poor structural rigidity are cleverly covered in the heat-conducting ceramic body 200, so that the first conductive part 120 and the second conductive part 130 can be vertically arranged and connected to the power supply, and the heat insulation member and the cigarette are better avoided.

[0051] Further, the position relationship of the first accommodating cavity and the second accommodating cavity in the heat-conducting ceramic body has the following cases: the first accommodating cavity and the second accommodating cavity are both arranged in the first heat-conducting member; or the first accommodating cavity and the second accommodating cavity are both arranged in the second heat-conducting member; or the first accommodating cavity is arranged in the first heat-conducting member, and the second accommodating cavity is arranged in the second heat-conducting member; or the first accommodating cavity is arranged in the second heat-conducting member, and the second accommodating cavity is arranged in the first heat-conducting member. Of course, a person skilled in the art can freely select according to the actual situation, and preferably, the first accommodating cavity and the second accommodating cavity are both arranged in the first heat-conducting member.

[0052] In one of the embodiments, referring to Figure 6 The electronic cigarette heater further comprises a temperature sensing member 400 connected with the heat-conducting ceramic body 200. The temperature sensing member 400 is used for detecting the temperature of the heat-conducting ceramic body 200. The temperature sensing member 400 is at least partially covered in the heat-conducting ceramic body 200, so that the temperature of the heat-conducting ceramic body 200 is transmitted to the temperature sensing member 400, which is beneficial to the sensitive detection of the temperature of the heat-conducting ceramic body 200 by the temperature sensing member 400, and improves the temperature sensing precision of the temperature sensing member 400. In the embodiment, the temperature sensing member can be a thermistor (NTC) or a thermocouple.

[0053] In one of the embodiments, a plurality of air guiding channels are formed in the heat-conducting ceramic body, each of the air guiding channels is arranged in parallel to each other, specifically, each of the air guiding channels forms an air guiding channel group, and the air guiding channel groups are distributed radially along the central axis of the heat-conducting ceramic body, forming air guiding channel clusters, the air guiding channel clusters are surrounded by the annular containing cavity, and the annular heating portion also surrounds the air guiding channel clusters, in this way, the heating portion is located at the peripheral position of the heat-conducting ceramic body, when the heating portion is powered and heated, it can uniformly transmit heat to the inner structure of the heat-conducting ceramic body from 360 degrees, the heat-conducting path is more reasonable, at the same time, based on the annular containing cavity, the air guiding channel and the heating portion are avoided, that is, the heating portion is not directly exposed outside the air guiding channel, and since the cigarette is in contact with the end face of the heat-conducting ceramic body, it will not wear the inner wall of the air guiding channel, which can further better protect the heating portion, in combination with the radially distributed air guiding channel clusters, the external fresh air flowing through each air guiding channel can be better and more uniformly heated, ensuring uniform heating without temperature difference and time difference, and the energy saving effect is better, and the hot flushing effect on the cigarette is better.

[0054] Further, the heating portion is an annular structure, the first heat-conducting member and the second heat-conducting member are cylindrical structures with the same structure, the distance between the end face of the heating portion and the first heat-conducting member is the same as the distance between the end face of the heating portion and the second heat-conducting member, in this way, the temperature of the outer surface and the inner part of the heat-conducting ceramic body of the electronic cigarette heater is more uniform, the overall heating path is optimized, and the problem of poor heating effect of the electronic cigarette is solved.

[0055] Further, the first electrically-conductive portion and the second electrically-conductive portion are strip structures with the same structure, the first electrically-conductive portion and the second electrically-conductive portion are distributed in axial symmetry along the central axis of the heating portion, in this way, the first electrically-conductive portion and the second electrically-conductive portion can also better avoid the central core position of the air guiding channel cluster, and the overall structural design is more ingenious and reasonable.

[0056] Further, the heat insulation member is a cylindrical structure, the inner wall of the heat insulation member is interference-fitted with the outer wall of the heat-conducting ceramic body, in this way, the problem of gap between the inner wall of the heat insulation member and the heat-conducting ceramic body is eliminated, and the external fresh air is all guided into the air guiding channel, so that the external fresh air is uniformly heated, the energy saving effect is better, and the hot flushing effect on the cigarette is better.

[0057] Further, the first electrically-conductive portion and the second electrically-conductive portion are respectively welded with the heating portion, in combination with the positional relationship between the electrically-conductive portion and the containing cavity, the welding process with lower cost can be selected to realize the connection relationship between the electrically-conductive portion and the heating portion, and there is no need to worry about the problem of insufficient structural rigidity.

[0058] In an embodiment, an electronic cigarette comprises the electronic cigarette heater of any of the above embodiments, and further comprises a cigarette, a housing and a power supply, the cigarette is inserted into the electronic cigarette heater, the power supply is electrically connected with the electronic cigarette heater, and the electronic cigarette heater and the power supply are both arranged in the housing. In this way, when the electronic cigarette heater is used, the overall heating performance of the electronic cigarette can be greatly improved.

[0059] It can be understood that, in order to enable the new air flowing through the air guide channel and flushing the cigarette to mix with the cigarette smoke and smoothly enter the electronic cigarette mouthpiece, generally, a certain gap needs to be provided between the cigarette and the heat insulation member. In this way, the diameter of the heat conduction ceramic body needs to be larger than the diameter of the cigarette, because the diameter of the heat conduction ceramic body needs to be the same as the inner diameter of the heat insulation member, so that the combined structure has higher stability. In this way, the outer edge of the heat conduction ceramic body is difficult to directly contact the cigarette, which causes part of the heat energy to be lost, and the cigarette cannot be heated sufficiently. In addition, because there is a certain gap between the cigarette and the heat insulation member, when the electronic cigarette is smoked, the electronic cigarette shakes, and the cigarette in the heat insulation member is displaced to a certain extent, which affects the contact effect of the cigarette and the heat conduction ceramic body.

[0060] In order to more effectively improve the heat energy utilization of the cigarette on the heat conduction ceramic body, and reduce the displacement of the cigarette in the heat insulation member, and improve the contact effect of the cigarette and the heat conduction ceramic body, in the embodiment, the first heat conduction member is provided with a heat flattening groove on the end portion away from the second heat conduction member, and the diameter of the heat flattening groove is adapted to the diameter of the cigarette. In this way, when the cigarette is inserted, the head of the cigarette is clamped in the heat flattening groove. First, the inner wall of the heat flattening groove can heat the cigarette more sufficiently, that is, the contact surface area is increased. At the same time, because the diameter of the heat flattening groove is adapted to the diameter of the cigarette, the inner wall of the heat flattening groove can better fix the cigarette, which can reduce the displacement of the cigarette in the heat insulation member, and improve the contact effect of the cigarette and the heat conduction ceramic body.

[0061] Further, since the diameter of the ironing hot groove is used to adapt to the diameter of the cigarette, the gap between the cigarette and the ironing hot groove is relatively hindered compared to the air flow, affecting the smoothness of the user's smoking. In the embodiment, the inner wall of the ironing hot groove is also provided with a spiral air guide groove, which extends around the axis of the first heat conducting member. One end of the spiral air guide groove extends to the bottom of the ironing hot groove, and the other end of the spiral air guide groove extends to the end face of the end of the first heat conducting member away from the second heat conducting member. In this way, after the newly entered air flows out of the air guide channel, most of the newly entered air will flow spirally upward along the spiral air guide groove. In this way, the smoothness of the air flow can be ensured to ensure the smoothness of the user's smoking. Similarly, the spiral upward flow can more fully flush the surface of the cigarette and carry away more volatile smoke, and the air flow path is more reasonable, and the amount of smoke is more full and rich.

[0062] Further, the inner diameter of the heat insulation member gradually increases from the end close to the heat conducting ceramic body to the end away from the heat conducting ceramic body, the inner diameter of the ironing hot groove gradually increases from the bottom to the opening direction, and the inner diameter of the spiral air guide groove gradually decreases from the bottom of the ironing hot groove to the opening direction of the ironing hot groove. In this way, first, since the inner diameter of the heat insulation member gradually increases from the end close to the heat conducting ceramic body to the end away from the heat conducting ceramic body and the inner diameter of the ironing hot groove gradually increases from the bottom to the opening direction, the bottom of the ironing hot groove and the bottom of the heat insulation member can hold the cigarette more tightly and increase the contact area, thereby improving the thermal contact effect. At the same time, considering that the bottom of the cigarette is in relatively close contact with the inner wall of the ironing hot groove and the inner wall of the heat insulation member, the air flow smoothness decreases, and the inner diameter of the spiral air guide groove gradually decreases from the bottom of the ironing hot groove to the opening direction of the ironing hot groove, that is, the inner diameter of the spiral air guide groove at the bottom of the ironing hot groove is relatively larger than the opening of the ironing hot groove. In this way, the problem is greatly alleviated, and the air flow smoothness and heating performance are considered.

[0063] Please refer to Figure 7 In an embodiment, the preparation method of the electronic cigarette heater includes the following steps:

[0064] S100: pouring a first ceramic slurry into the mold to form a first heat conducting member.

[0065] The mold is provided with a cavity, and when the first ceramic slurry is poured into the pouring port of the mold, the first ceramic slurry is in the cavity to form a first heat conducting member, which is convenient for subsequent curing operation.

[0066] S200: curing the first heat conducting member.

[0067] In this embodiment, the step of curing the first heat-conducting member is specifically sintering the first heat-conducting member at a first preset temperature. After sintering the first heat-conducting member, the structural stability of the first heat-conducting member is stronger.

[0068] Further, the first preset temperature is 500-1800℃, so that the first heat-conducting member can be better sintered and cured.

[0069] S300: Forming a metal heating member in the mold and connecting the metal heating member with the first heat-conducting member.

[0070] In this embodiment, the step of forming a metal heating member in the mold is specifically casting the metal heating member in the mold.

[0071] Further, the metal heating member is obtained by combining two different materials, i.e., the metal heating member includes a heating portion, a first conductive portion, and a second conductive portion. The operation of forming a metal heating member in the mold specifically includes the following steps:

[0072] Positioning and placing the first heat-conducting member in the first cavity of the first mold, and the first cavity is provided with a first heat-conducting member placing area and a heating portion forming area communicating with the first heat-conducting member placing area;

[0073] Injecting a first metal molten liquid into the heating portion forming area of the first mold through the pouring port of the first mold, and after casting and cooling, the heating portion is fixedly connected with the first heat-conducting member to obtain a first semi-finished product;

[0074] Positioning and placing the first semi-finished product in the second cavity of the second mold, and the second cavity is provided with a first semi-finished product placing area and a conductive portion forming area communicating with the first semi-finished product placing area;

[0075] Injecting a second metal molten liquid into the conductive portion forming area of the second mold through the pouring port of the second mold, and after casting and cooling, the first semi-finished product is fixedly connected with the first conductive portion and the second conductive portion, respectively, to obtain a second semi-finished product.

[0076] In this way, the metal heating member obtained by casting is more stable and firm in connection with the first heat-conducting member, and the structure of the metal heating member itself is more integrated, and the stability is also higher, which is more conducive to the subsequent formation of the first heat-conducting member.

[0077] S400: Injecting a second ceramic slurry into the mold to form a second heat-conducting member connected with the metal heating member.

[0078] In the embodiment, the first ceramic slurry and the second ceramic slurry are both heat-conducting ceramic slurries, that is, the structure formed after the first heat-conducting member and the second heat-conducting member are connected is a heat-conducting ceramic body, and further, the first ceramic slurry and the second ceramic slurry are of the same material, so that the heat-conducting performance of the heat-conducting ceramic body is more uniform and consistent, and the second heat-conducting member formed on the first heat-conducting member has stronger connection performance and higher stability due to the same material.

[0079] In the embodiment, the step of curing the second heat-conducting member is specifically sintering and curing the second heat-conducting member at a second preset temperature, so that the structure of the second heat-conducting member has stronger stability after the sintering and curing.

[0080] Further, the second preset temperature is 500-1800℃, so that the second heat-conducting member can be better sintered and cured, and of course, both the first preset temperature and the second preset temperature can be freely selected by those skilled in the art according to actual conditions.

[0081] In the embodiment, the operation of injecting the second ceramic slurry into the mold to form the second heat-conducting member connected with the metal heating member includes the following steps:

[0082] The second semi-finished product is positioned and placed in a third cavity of a third mold, and the third cavity is provided with a second semi-finished product placement area and a second heat-conducting member forming area communicating with the second semi-finished product placement area;

[0083] The second ceramic slurry is injected into the second heat-conducting member forming area of the third mold through the pouring port of the third mold, so that the second heat-conducting member is connected with the second semi-finished product.

[0084] S500: curing the second heat-conducting member to form a heat-conducting ceramic body with the first heat-conducting member, and then covering the heat-conducting ceramic body on the metal heating member to obtain an electronic cigarette heater.

[0085] In the embodiment, a preparation method of an electronic cigarette heater comprises: injecting a first ceramic slurry into the mold to form a first heat-conducting member; performing a curing treatment on the first heat-conducting member; forming a metal heating member in the mold and connecting the metal heating member with the first heat-conducting member; injecting a second ceramic slurry into the mold to form a second heat-conducting member connected with the metal heating member; performing a curing treatment on the second heat-conducting member to connect the second heat-conducting member with the first heat-conducting member to form a heat-conducting ceramic body, and then covering the heat-conducting ceramic body on the metal heating member to obtain the electronic cigarette heater. The electronic cigarette heater obtained by the method has the advantages of any of the above embodiments.

[0086] In an embodiment, an electronic cigarette heater is prepared by the preparation method of the electronic cigarette heater of any of the above embodiments. Thus, the electronic cigarette heater has better heating performance.

[0087] Compared with the prior art, the present application has at least the following advantages:

[0088] 1. The electronic cigarette heater has a double heating function. One heating method is direct contact heating of the heater on a cigarette, i.e. conduction heating. Another heating method is air brush heating. During the smoking process, the incoming air from the outside will first flow through the heater, the heater heats the air, the heated air flows through the cigarette again, washes the cigarette, heats the cigarette, and carries the smoke to the cigarette holder for the user to smoke. For the heat-conducting ceramic with a cylindrical structure, the metal heating member is generally integrated and attached to the inner surface of the heat-conducting ceramic by patching or circuit printing. The incoming air will flow through the inner and outer surfaces of the cylindrical heat-conducting ceramic and finally flow into the cigarette holder together with the smoke. The incoming air will flow through the inner and outer surfaces of the cylindrical heat-conducting ceramic, the inner surface of the heat-conducting ceramic is higher than the outer surface, which leads to two air flows and temperature difference, which is not conducive to the effective use of heat energy, i.e. poor energy saving effect. The heat-conducting ceramic body 200 of the present application has an inner heating part 110, the overall heat conduction effect of the heat-conducting ceramic body 200 is quite uniform and stable, and the incoming air from the outside can only flow through the air guide channel 240. Thus, when the incoming air from the outside flows through the air guide channel 240, it will be heated, and the incoming air from the outside must only enter the air guide channel 240. Because the heat-conducting ceramic body 200 is locked by the heat insulation part 300, the incoming air from the outside cannot flow out from the gap between the two, ensuring the integrated and synchronous heating of the incoming air from the outside, optimizing the heating path, and having no temperature and time difference, higher heat energy efficiency, and better energy saving effect.

[0089] 2. In the preparation of the electronic cigarette heater 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 injected into both ends of the mold to form the first heat-conducting element and the second heat-conducting element that together cover the metal heating element. The first heat-conducting element and the second heat-conducting element together cover the metal heating element, thus avoiding the problem of the metal heating element being directly exposed to the outside and causing wear. When the metal heating element is powered on, it generates heat, and the heat can be conducted to the surface of the first heat-conducting element and the second heat-conducting element respectively.

[0090] 3. Because the heating element is integrated and mounted on the surface of the thermally conductive ceramic using surface mount technology (SMT) or printed circuitry, the heating path of the metal heating element itself is not optimal when generating heat through electrical conductivity. This is due to the existence of two heating zones and two heating time differences. Regarding the two heating zones, because the sintered layer is thinner, the temperature of the sintered layer directly above the metal heating element is significantly higher than that of the other sintered layers, as the heat from the other sintered layers needs to be transferred through the thermally conductive ceramic. Regarding the two heating time differences, the temperature of the sintered layer directly above the metal heating element is reached fastest, directly transferred by the metal heating element. However, because the heat from the other sintered layers still needs to be transferred through the thermally conductive ceramic, there is a time lag. Therefore, this results in an inefficient heating path. However, in this case, the first ceramic slurry and the second ceramic slurry are injected into the mold at both ends respectively. During the glue pouring process, it can be ensured that the injection amount at both ends of the mold is consistent, so that the distance between the end face of the first heat-conducting component and the metal heating component and the end face of the second heat-conducting component and the metal heating component are small or even zero. This makes the temperature of the surface of the electronic cigarette heater more uniform, optimizes the overall heating path, and solves the problem of poor heating effect of electronic cigarettes.

[0091] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electronic cigarette heater, characterized by, The utility model relates to a kind of electronic cigarette heater, including: Metal heating part, the metal heating part includes heating part, first electrically conductive part and second electrically conductive part, and the first electrically conductive part and the second electrically conductive part are electrically connected with heating part respectively; Thermal ceramic body, the thermal ceramic body includes first thermal part and second thermal part connected with the first thermal part, and the connecting position of the first thermal part and second thermal part is provided with containing cavity, and the heating part is contained in the containing cavity, and the thermal ceramic body is provided with gas guide channel, and the gas guide channel sequentially penetrates the first thermal part and second thermal part, and the thermal ceramic body is provided with a plurality of gas guide channels, and each gas guide channel is arranged in parallel with each other, and each gas guide channel forms gas guide channel group, and the gas guide channel group is surrounded by the containing cavity, and the heating part is also surrounded by the gas guide channel group, so that the heating part is at the peripheral position of the thermal ceramic body; Thermal insulation part, the thermal insulation part is sleeved on the thermal ceramic body outside; The end of the first thermal part away from the second thermal part is provided with ironing hot groove, and the diameter of the ironing hot groove is adapted to the diameter of cigarette;The inner wall of the ironing hot groove is also provided with spiral gas guide groove, and the spiral gas guide groove extends around the axial direction of the first thermal part, one end of the spiral gas guide groove extends to the bottom of the ironing hot groove, and the other end of the spiral gas guide groove extends to the end face of the end of the first thermal part away from the second thermal part; The electronic cigarette heater is prepared by the preparation method of electronic cigarette heater, including the following steps: Pouring first ceramic slurry into the mold to form the first thermal part; Solidification treatment is carried out on the first thermal part; The metal heating part is formed in the mold, and the metal heating part is connected with the first thermal part; Pouring second ceramic slurry into the mold to form the second thermal part connected with the metal heating part; The second thermal part is subjected to solidification treatment to connect the second thermal part with the first thermal part to form a thermal ceramic body, and then the thermal ceramic body is coated outside the metal heating part to obtain an electronic cigarette heater. The first ceramic slurry and the second ceramic slurry are of the same material, and both the first ceramic slurry and the second ceramic slurry are thermal ceramic slurry.

2. The electronic cigarette heater of claim 1, wherein, The first accommodating cavity and the second accommodating cavity are arranged in the first thermal part.

3. The electronic cigarette heater of claim 2, wherein, Or the first accommodating cavity and the second accommodating cavity are arranged in the second thermal part. Or the first accommodating cavity is arranged in the first thermal part, and the second accommodating cavity is arranged in the second thermal part. ​ Or the first accommodating cavity is arranged in the second heat conduction member, and the second accommodating cavity is arranged in the first heat conduction member.

4. The electronic cigarette heater of claim 1, wherein, A temperature sensing member is further included and connected with the heat conduction ceramic body.

5. The electronic cigarette heater of claim 1, wherein, The heating part is in a circular ring structure, the first heat conduction member and the second heat conduction member are in the same cylindrical structure, and the distance between the heating part and the end surface of the first heat conduction member is the same as the distance between the heating part and the end surface of the second heat conduction member.

6. An electronic cigarette, characterized in that, The electronic cigarette heater of any one of claims 1 to 5 further comprises a cigarette, a shell and a power supply, the cigarette is inserted into the electronic cigarette heater, the power supply is electrically connected with the electronic cigarette heater, and the electronic cigarette heater and the power supply are arranged in the shell.

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