CN111418896A - Heating needle assembly for an aerosol-generating system and corresponding method of manufacture - Google Patents
Heating needle assembly for an aerosol-generating system and corresponding method of manufacture Download PDFInfo
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- CN111418896A CN111418896A CN202010374309.2A CN202010374309A CN111418896A CN 111418896 A CN111418896 A CN 111418896A CN 202010374309 A CN202010374309 A CN 202010374309A CN 111418896 A CN111418896 A CN 111418896A
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Abstract
A heating needle component applied to an aerosol generating system and a corresponding manufacturing method belong to the technical field of tobacco products. The center of the mounting base is provided with a through hole, one end of the heating core rod is fixed in the through hole of the mounting base, the outer wall of the heating core rod is provided with a heating circuit, the heating circuit comprises a power supply connecting wire, a heating circuit and a conductive circuit, positive and negative poles of the power supply connecting wire are connected with one end of the heating core rod, the conductive circuit is divided into two sections, and each section respectively connects one end of the heating circuit with one pole of one power supply connecting wire to form a conduction loop from the power supply connecting wire to the heating circuit. The heating needle assembly applied to the aerosol generating system and the corresponding manufacturing method can realize the local heating function, realize the standardized and large-scale production, are favorable for improving the production efficiency of the heating needle assembly and reducing the production cost of the heating needle assembly, and create favorable conditions for the application and popularization of the aerosol generating body and the aerosol generating system in the field.
Description
Technical Field
The invention belongs to the technical field of tobacco products, and particularly relates to a heating needle assembly applied to an aerosol generating system and a corresponding manufacturing method.
Background
Currently, in the field of tobacco product technology, tobacco products have been presented in which tobacco is heated, rather than combusted. Such heated non-combustible smoking articles are intended to significantly reduce the majority of known harmful or potentially harmful substances produced by previous combustion regimes by controlling the heating temperature, and thus to develop aerosol-generating bodies with aerosol-forming substrates. The aerosol-generating body absorbs thermal energy converted from electrical energy by direct physical contact with the resistive heating element to form a nicotine-containing aerosol, which in turn delivers nicotine to the user.
As shown in fig. 1, is a known aerosol-generating body 201 having a novel structure and comprising at least an aerosol-generating substrate 202 and a packaging material 203. The aerosol-generating substrate 202 may comprise reconstituted tobacco in an ordered arrangement, reconstituted tobacco in a disordered arrangement, or ordinary tobacco. In order to heat the aerosol-generating substrate 202, the heating needle assembly 101 needs to be inserted into the aerosol-generating substrate 202. When the power connection 108 is powered, the heating pin assembly 101 can convert electrical energy into heat energy. The heating needle assembly 101 does not have a local heating function, and the portion inserted into the aerosol-generating body 201 directly heats the aerosol-generating substrate 202 by resistance heating.
As shown in fig. 5, with the development of the related art, an aerosol-generating body 201 with a closed section 204 has emerged in the art. The heating needle assembly 101 is inserted from the closed section 204, through the hollow structure 205 of the closed section 204, and finally into the aerosol-generating substrate 202. Generally, the closed section 204 has good gas permeability, but poor heat resistance and often withstands temperatures below 150 ℃. Whereas the required heating temperature of the aerosol-generating substrate 202 is in excess of 300 ℃. To avoid wasting energy when heating and to avoid overheating of the closed section 204, the heating needle assembly 101 should have the function of local heating, only directly heating the aerosol-generating substrate 202, and not directly heating the closed section 204. At the same time, the heater pin needs to be inserted relatively easily into the aerosol-generating substrate 202 after passing through the hollow structure 205, and the heater pin assembly 101 must still be sufficiently stiff yet thin and long. The prior art has not addressed this challenge as well and it has become desirable to develop a heater pin assembly that can accommodate such use.
Disclosure of Invention
The invention aims to provide a heating needle assembly applied to an aerosol generating system and a corresponding manufacturing method, and the manufactured heating needle can arrange a heating circuit on the outer wall of a heating core rod according to the use requirement of a specific aerosol generating body to realize a local heating function.
The technical scheme of the invention is as follows:
a heating needle assembly for use in an aerosol-generating system, the heating needle assembly comprising a heating mandrel and a mounting base; the heating core rod is characterized in that a through hole is formed in the center of the mounting base, one end of the heating core rod is fixed in the through hole of the mounting base, a heating circuit is arranged on the outer wall of the heating core rod and comprises a power supply connecting wire, a heating circuit and a conductive circuit, positive and negative poles of the power supply connecting wire are connected with one end of the heating core rod, the conductive circuit is divided into two sections, and each section is respectively connected with one end of the heating circuit and one pole of one power supply connecting wire to form a conduction loop from the power supply connecting wire to the heating circuit.
A method of making a heated needle assembly for use in an aerosol-generating system, the method comprising the steps of:
301, manufacturing or outsourcing parts of a heating needle assembly, wherein the parts of the heating needle assembly mainly comprise a mounting base, a reinforcing pipe and a heating core rod;
step 302-positioning the heating core rod;
step 303-manufacturing a side heating circuit; the heating circuit comprises an upper heating circuit and a lower heating circuit, wherein the heating circuit on one side is manufactured on the positioned heating core rod, and the raw material selected by the heating circuit is slurry, paint or a surface-mounted wire;
step 305-manufacturing a heating circuit on the other side; turning or moving the positioned heating core rod to expose the working surface, and manufacturing a heating circuit on the other side of the positioned heating core rod, wherein the raw material of the heating circuit is slurry, paint or a surface-mounted wire;
step 306-close the two sections of heating circuits; the two sections of heating circuits respectively manufactured are sealed, and the sealing mode adopts screen printing or direct coating of slurry, so that a complete heating circuit is formed;
step 308, manufacturing a conductive circuit on one side, wherein the conductive circuit comprises a conductive circuit on the upper side and a conductive circuit on the lower side; manufacturing a conductive circuit on one side of the positioned heating core rod, wherein the raw material of the conductive circuit is slurry, paint or a patch type lead;
step 310, manufacturing a conductive circuit on the other side; the positioned heating core rod is required to be turned over or moved, the working surface is exposed, and a conductive circuit on the other side is manufactured on the positioned heating core rod, wherein the raw material of the conductive circuit is slurry, paint or a surface-mounted wire;
step 313-manufacturing a protective layer; coating the raw material on the corresponding position of the heating core rod according to the predefined parameters in a spraying, soaking, printing, pasting or rolling brush mode;
step 314-cure; curing and molding the primarily manufactured protective layer at the curing temperature of 550-700 ℃ for 8-12 min;
step 315-making electrode joints; firstly, processing two tail ends of a manufactured conductive circuit, wherein the processing contents comprise cleaning, scribing, manufacturing a bonding pad and connecting a conductor in sequence;
step 317-assembling the reinforcement pipes and the mounting base; assembling a reinforcing pipe on a corresponding position of a heating core rod according to a preset mode, and then assembling an installation base on a corresponding position of an assembly formed by the reinforcing pipe and the heating core rod according to a preset mode; or the integrally formed reinforcing tube and the mounting base are assembled on the corresponding position of the heating core rod together according to a preset mode to form an assembly body;
step 320-curing glue; solidifying the glue according to the requirements of the glue, wherein the solidifying process comprises the following steps: standing the assembly body for 10-13h at room temperature, standing the assembly body for 1-3h at 60-100 ℃, and finally standing the assembly body for 1-3h at 100-250 ℃, slowly cooling to room temperature, and finishing curing;
step 321-connecting a power connection line; connecting the power supply connecting wire with the electrode connecting part;
step 322-checking; inspecting the heating needle assembly obtained in the step so as to remove products which do not meet the quality requirement;
step 323-marking and warehousing.
Compared with the prior art, the invention has the beneficial effects that: the heating needle assembly applied to the aerosol generating body can realize local heating, limits the direct heating part to the part of the heating needle assembly inserted into the aerosol generating substrate, meets the use requirement of the aerosol generating body with the closed section, and effectively relieves the design difficulty and the use discomfort of the closed section caused by overheating; the local heating improves the heating efficiency of the heating needle assembly, the heat is concentrated on the aerosol generating substrate part which needs to be heated, the heat emitted from the closed section is obviously reduced, the battery endurance of the system in use is improved, and therefore the user experience is improved; the reinforcing tube can protect the heating core rod, the integral rigidity of the heating needle assembly is enhanced, the heating needle assembly structure can still keep enough rigidity under the condition of ensuring that the heating core rod has larger length-diameter ratio, and the reliability and the stability of the use of the heating needle assembly are ensured; by matching the outer diameter of the reinforcing pipe and the inner diameter of the hollow structure of the closed section (see fig. 5) of the aerosol generating body, the heating needle assembly can close the hollow structure after being inserted into the aerosol generating body, the aerosol generated after the aerosol generating substrate is heated is effectively reduced from overflowing from one end of the heating needle assembly through the hollow structure, and the harm of second-hand smoke is reduced; the heating needle assembly applied to the aerosol generating system and the corresponding manufacturing method can realize standardized and large-scale production, are beneficial to improving the production efficiency of the heating needle assembly and reducing the production cost of the heating needle assembly, and create favorable conditions for the application and popularization of the aerosol generating body and the aerosol generating system in the field.
Drawings
FIG. 1 is a front view of an aerosol-generating body of the background art;
figure 2 is an isometric view of a heater pin assembly of the present invention applied to an aerosol-generating system;
figure 3 is a front cross-sectional view of a heater pin assembly of the present invention as applied to an aerosol-generating system;
FIG. 4 is a schematic view of a heating circuit for heating the surface of the mandrel; in the figure, the development surface 102' is the pattern formed after the cylindrical surface of the heated mandrel 102 is developed;
figure 5 is a schematic view of an application scenario of a heater pin assembly for an aerosol-generating system according to the present invention;
figure 6 is a flow chart of the present invention for making a heater pin assembly for use in an aerosol-generating system.
Detailed Description
The first embodiment is as follows: as shown in fig. 2-4, the present embodiment discloses a heating needle assembly for an aerosol-generating system, comprising a heating mandrel 102 and a mounting base 104; a through hole is arranged in the center of the mounting base 104, one end of the heating core rod 102 is fixed in the through hole of the mounting base 104, a heating circuit is arranged on the outer wall of the heating core rod 102, the heating circuit comprises a power connection wire 108, a heating circuit 109 and a conducting circuit 110, the positive and negative pole wires of the power connection wire 108 are connected with the one end of the heating core rod 102, the conductive circuit 110 is divided into two segments, each segment connecting one end of the heating circuit 109 to one pole of one of the power connection lines 108 to form a conductive loop from the power connection line 108 to the heating circuit 109 (while the conductive circuit 110 itself does not significantly or hardly generate heat during energization; depending on the predefined size and shape of the conductive circuit 110 and the heating circuit 109, the heating core rod 102 may only generate heat locally as desired; and may provide energy to the circuitry on the heating core rod 102 under controlled conditions).
The primary function of the heating mandrel 102 is to ensure that the heating needle assembly 101 has a predefined length in the axial direction, to reduce the resistance of the heating needle assembly 101 when inserted into the aerosol-generating substrate 202, and to generate heat for transfer to the aerosol-generating substrate 202 by a heating circuit 109 provided over a predefined interval.
The mounting base 104 serves to enclose the heating pin assembly 101, provide an interface for mechanical and electrical connection with the outside, and provide thermal insulation.
The second embodiment is as follows: as shown in fig. 2-4, in the heating needle assembly for an aerosol-generating system according to the first embodiment, the heating core rod 102 is made of an insulating non-metallic material (such as zirconia, alumina or ceramic material), or a surface-insulated metallic material (such as stainless steel after glazing), or a zirconia material processed by a powder sintering technique (to reduce cost, improve insulation, facilitate circuit processing, and improve overall rigidity and toughness).
The third concrete implementation mode: as shown in fig. 2-4, in the heating needle assembly for an aerosol generating system according to the first embodiment, the heating core rod 102 is conical, or the main body is cylindrical and the other end is conical, or the main body is polygonal and the other end is conical (which is beneficial to reduce the puncture pressure), or the main body is elliptical and the other end is conical, the diameter of the main body cylindrical heating core rod 102 is between 0.5 mm and 4mm, and the length is between 15 mm and 40 mm.
The fourth concrete implementation mode: as shown in fig. 4, in the heating needle assembly for an aerosol-generating system according to the first embodiment, the heating circuit further includes an electrode connection terminal 111; the heating circuit 109 is arranged on one side of the heating core rod 102 close to the conical tip (the heating circuit 109 is formed by applying slurry on the surface of the heating core rod 102 according to a predefined pattern and then sintering at a high temperature, the resistance is large, the high-temperature sintering temperature is 700-900 ℃, the time is 5-13min, the heating circuit 109 is a section of complete line, the slurry comprises the effective components of ruthenium, silver, palladium, ruthenium-glass powder dopant, carbon, graphite, tungsten or tungsten-molybdenum dopant, preferably, the square resistance value of the slurry selected by the heating circuit 109 is 0.1-1 omega according to the specific predefined circuit length), the conductive circuit 110 is arranged on one side of the surface of the heating core rod 102 close to the power supply connecting wire 108 (the conductive circuit 110 is formed by applying slurry on the surface of the heating core rod 102 according to the predefined pattern and then sintering at the high temperature, the resistance is small. The temperature of the high-temperature sintering is 700-900 ℃, and the time is 5-13 min. The active ingredient of the paste is gold, silver, copper, silver or silver palladium dopant), the connection point of the power supply connection line 108 and the conductive circuit 110 is an electrode connection end point 111, the electrode connection end point 111 is formed by directly welding the positive electrode and the negative electrode of the power supply connection line 108 on the conductive circuit 110, or a conductive material (such as red copper or iron) is connected to the corresponding position of the conductive circuit 110 in a non-insulating manner, the connection manner is welding or bonding, and then the power supply connection line 108 and the conductive material are correspondingly connected (the connection among the power supply connection line 108, the electrode connection position 111, the conductive circuit 110 and the heating circuit 109 should ensure that the connection points are connected stably, the contact resistance is low, no short circuit or short circuit point, and the line type and the thickness are uniform).
The fifth concrete implementation mode: as shown in fig. 3 and 4, the heating needle assembly for an aerosol-generating system according to the third embodiment further includes a reinforcing tube 103; one end of the reinforcing tube 103 is fixedly connected in the through hole of the mounting base 104, and one end of the heating core rod 102 with the conductive circuit 110 is fixedly connected in the reinforcing tube 103; the reinforcing pipe 103 is a separate prefabricated member or is integrally formed with the mounting base 104, the reinforcing pipe 103 is made of alumina, zirconia, Polyetheretherketone (PEEK), polymer or ceramic material (preferably, the reinforcing pipe 103 is a prefabricated member made of alumina), and the diameter of the outer wall of the reinforcing pipe 103 is 1-5 mm.
The reinforcing tube 103 serves to increase the overall structural rigidity and serves as a guide when the heating plug 102 is inserted into the aerosol-generating body 201, protecting the electrical circuit on the heating plug 102.
In general, the heating core rod 102, the reinforcing tube 103 and the mounting base 104 should all have the same type of cross-section, as if they were circular, square, oval, triangular, polygonal. But may also be a combination of different shapes, provided that the assembly conditions are fulfilled.
In particular, in some more general application scenarios, the length of the stiffening tube 103 may be any value between the thickness of the mounting base 104 and the length of the heating core rod 102.
When the length of the reinforced pipe 103 is equal to the thickness of the mounting base 104, the reinforced pipe 103 essentially becomes a part of the mounting base and may even be eliminated directly, leaving only the mounting base 104.
The sixth specific implementation mode: as shown in fig. 3, the heating needle assembly applied to the aerosol-generating system according to the fifth embodiment is connected between the heating mandrel 102 and the reinforcing tube 103 through a first connection layer 107, where the first connection layer 107 is an adhesive bonding layer (such as an adhesive layer formed by inorganic glue and organic glue; preferably, the first connection layer 107 can be made of inorganic glue DB 5012); or mechanical connection is adopted, and the mechanical connection is specifically as follows: a boss or a notch is arranged at one end of the outer wall of the heating core rod 102, which is connected with the reinforcing pipe 103, a notch or a boss is arranged on the inner wall of the reinforcing pipe 103 along the axial direction, and the boss or the notch on the outer wall of the heating core rod 102 is matched and connected with the notch or the boss on the inner wall of the reinforcing pipe 103; or, an external thread is arranged on the outer wall of one end of the cylindrical heating mandrel 102 with the other end being conical, which is connected with the reinforcing pipe 103, an internal thread is arranged on the inner wall of the reinforcing pipe 103, and the cylindrical heating mandrel 102 with the other end being conical is in threaded connection with the reinforcing pipe 103.
The seventh embodiment: as shown in fig. 3 and 4, in the heating needle assembly applied to the aerosol-generating system according to the fifth or sixth embodiment, a protective layer 105 is coated on a surface of the heating core rod 102 not overlapping with the reinforcing tube 103 (for effectively protecting the heating circuit 109 and the conductive circuit 110 on the surface of the heating core rod 102, reducing abrasion during use, and reducing adhesion between the aerosol-generating substrate 202 and the surface of the heating core rod 102), and the protective layer 105 is a heat-resistant coating (made of a glass film coating, a teflon coating, a single coating or a composite coating of a teflon coating, a glaze, or a sintering encapsulation slurry).
When the length of the reinforcing tube 103 is equal to the length of the heating core rod 102, the reinforcing tube 103 essentially also assumes the function of the protective layer 105, and the protective layer 105 may be eliminated while leaving only the reinforcing tube 103.
The specific implementation mode is eight: as shown in fig. 3, the heating pin assembly for an aerosol-generating system according to the seventh embodiment is characterized in that the mounting base 104 is made of a metal material (e.g. aluminum) or a non-metal inorganic material (e.g. alumina or zirconia) or an organic polymer (e.g. PEEK), when the mounting base 104 and the reinforcing tube 103 are separate prefabricated members, the mounting base 104 and the reinforcing tube 103 are connected by a second connecting layer 106, and the second connecting layer 106 is an adhesive bonding layer (e.g. formed by an inorganic adhesive or an organic adhesive; preferably, the second connecting layer 106 is made of an inorganic adhesive DB5012) or a mechanical connection, specifically: a convex column or a groove penetrating through two end faces of the through hole is arranged on the side wall of the through hole of the mounting base 104, a groove or a convex column is axially arranged at one end of the inner wall of the reinforcing pipe 103 connected with the through hole of the mounting base 104, and the convex column or the groove of the mounting base 104 is matched and connected with the groove or the convex column of the reinforcing pipe 103; or the through hole of the mounting base 104 is a threaded hole, an external thread is arranged at one end of the outer wall of the reinforcing pipe 103, which is connected with the through hole of the mounting base 104, and the mounting base 104 is in threaded connection with the reinforcing pipe 103.
Specifically, in some cases, the mounting base 104 may be directly assembled with the heating mandrel 102 while the reinforcing tube 103 is directly assembled with the heating mandrel 102. The second connection layer 106 now functions to connect the mounting base 104 and the heating mandrel 102.
The specific implementation method nine: as shown in fig. 2-4 and 6, a method for manufacturing a heating needle assembly for an aerosol-generating system according to a seventh or eighth embodiment comprises the following steps:
step 301-fabricating or outsourcing the components of the heating needle assembly, which mainly include the mounting base 104, the reinforcing tube 103, the heating core rod 102 (in order to check whether the various preforms and raw materials meet the corresponding specifications, such as dimensions, surface roughness, finish, color or other specifications, as an example, zirconia ceramic rods manufactured by India Special ceramics, Inc., Suzhou, etc.);
step 302-positioning the heating core rod 102 (aiming at fixing the heating core rod 102 at a specific position according to a specific direction by utilizing the geometric characteristics of the heating core rod 102 itself, or utilizing a corresponding fixture, or utilizing a mold such as a groove, and the like, so as to conveniently and stably perform subsequent steps according to a programmed method and on a large scale);
step 303-manufacturing one side heating circuit 109 (the upper side or the lower side heating circuit 109 as shown in fig. 4 should be manufactured, and the connection position of the two sections of heating circuits 109 at the tail end is not considered at all); the heating circuit 109 comprises an upper side heating circuit and a lower side heating circuit, the heating circuit 109 on one side is manufactured on the positioned heating core rod 102, and the raw material of the heating circuit 109 is slurry, paint or patch type conducting wire (preferably, corresponding slurry can be coated on a predefined expected position of the positioned heating core rod 102 in a screen printing mode. as an example, heating plasma 05H11-0R10012 produced by Shenzhen Spanish electronic paste Co., Ltd.) is adopted;
step 305-make the other side heating circuit 109; turning or moving the positioned heating mandrel 102 to expose the working surface, and manufacturing a heating circuit 109 on the other side of the positioned heating mandrel 102, wherein the raw material of the heating circuit 109 is paste, paint or patch type wires (preferably, the corresponding paste is coated on a predefined expected position of the positioned heating mandrel 102 by a screen printing method, as an example, heating plasma 05H11-0R10012 produced by seikian electronics paste limited);
step 306-close the two sections of heating circuits 109; the two sections of heating circuits 109 manufactured respectively are sealed, and screen printing or direct coating of slurry is adopted in a sealing mode, so that a complete heating circuit 109 is formed (as the case may be, a pre-curing step can be added between the step 303 and the step 305 (when the heating core rod 102 needs to be moved after the step 305 is completed, a pre-curing step can be added, the pre-curing temperature is 180-.
Step 308-make one side conductive circuit 110 (should make the conductive circuit 110 of the upper side or lower side as shown in fig. 4), the conductive circuit 110 includes the upper and lower two side conductive circuits; manufacturing a conductive circuit 110 on one side of the positioned heating mandrel 102, wherein the conductive circuit 110 is made of a paste, a paint or a patch-type wire (preferably, the corresponding paste can be coated on a predefined desired position of the positioned heating mandrel 102 by means of screen printing, as an example, the conductive paste 01H-1103 produced by shenzhen seya electronic paste limited company);
step 310-make the other side conductive circuit 110; the positioned heating core rod 102 needs to be turned over or moved to expose the working surface, and the other side of the positioned heating core rod 102 is provided with a conductive circuit 110, wherein the conductive circuit 110 is made of slurry, paint or a patch type lead;
step 312 — checking; the sintered heat generating circuit 109 and conductive circuit 110 are inspected to check whether they satisfy predefined criteria (e.g., appearance, mechanical properties, electrical properties, etc.); if the product is qualified, the next step is carried out, and if the product is not qualified, the product is regarded as a waste product, and the subsequent step is not carried out;
step 313-manufacture the protection layer 105; coating the raw material on the corresponding position of the heating core rod 102 according to predefined parameters (such as size, thickness, surface roughness, and smoothness) by spraying, soaking, printing, pasting, or rolling (preferably, the sintered encapsulation slurry is coated on the corresponding position by optionally soaking);
step 314-cure; curing and molding the initially manufactured protective layer 105 (to meet the expected appearance, mechanical property, chemical property and electrical property), wherein the curing temperature is 550-;
step 315-make electrode junction 111; firstly, processing two tail ends of a manufactured conductive circuit 110, wherein the processing contents comprise cleaning, scribing, manufacturing a bonding pad and connecting conductors (the bonding pad is an area formed at the tail end of the conductive circuit 110 after a soldering tin wire is solidified, and the conductors are red copper, iron, a Printed Circuit Board (PCB) or a Flexible Printed Circuit (FPC)) in sequence;
step 317-assembling the reinforcement pipe 103 and the mounting base 104; the reinforcing tube 103 is assembled to the corresponding position of the heating core rod 102 in a preset manner (as an example, the reinforcing tube 103 may be an alumina tube manufactured by special ceramics ltd, madder, su), and then the mounting base 104 is assembled to the corresponding position of the assembly formed by the reinforcing tube 103 and the heating core rod 102 in a preset manner; or the integrally formed reinforcing tube 103 and the mounting base 104 are assembled together on the corresponding position of the heating core rod 102 according to a preset mode to form an assembly body;
step 320-curing glue; solidifying the glue according to the requirements of the glue, wherein the solidifying process comprises the following steps: firstly, standing an assembly body (the assembly body comprises an installation base, a reinforcing pipe and a heating core pipe) for 10-13h at room temperature, then standing the assembly body for 1-3h at 60-100 ℃, finally standing the assembly body for 1-3h at 250 ℃, and then slowly cooling to room temperature to finish curing (fully exert a connection effect and provide stability and durability);
step 321-connect power connection line 108; connecting the power connection line 108 with the electrode connection site 111 (and meeting certain requirements on appearance, mechanical properties, chemical properties and electrical properties);
step 322-checking; the heating pin assembly 101 obtained through the above steps is inspected (to confirm whether it has the expected appearance, mechanical properties, chemical properties and electrical properties) so as to reject the products which do not meet the quality requirements;
step 323-mark and put in storage (register and store the relevant parameters obtained from step 322, such as resistance, size, temperature coefficient of resistivity, lot, time, etc., in a predefined manner).
The detailed implementation mode is ten: as shown in fig. 2, 4 and 6, the ninth embodiment of the method for manufacturing a heating needle assembly for an aerosol-generating system,
adding a step 304-precuring between the step 303 and the step 305; curing the heating circuit 109 on one side manufactured in the step 303 at the curing temperature of 180-;
adding a step 307 of pre-curing between the step 306 and the step 308; curing the two sections of the closed heating circuits 109 manufactured in the step 306 at the curing temperature of 180 ℃ and 250 ℃ for 5-12 min;
adding step 309-precuring between step 308 and step 310; curing the conductive circuit 110 on one side manufactured in the step 308 at the curing temperature of 180-;
in the step 317, when the reinforcing pipe 103 and the mounting base 104 are not integrally formed, after the reinforcing pipe 103 is assembled to the corresponding position of the heating mandrel 102 in a preset manner and before the mounting base 104 is assembled, the second connection layer 106 is added on the surface where the mounting base 104 and the reinforcing pipe 103 are connected with each other, and when the second connection layer 106 uses glue (such as an adhesive layer formed of inorganic glue or organic glue) or both glue and mechanical structure, the step is to apply glue (preferably, inorganic glue can be selected).
From the specific embodiments and examples described above, it will be obvious to those skilled in the art that other possible methods of fabrication may be made without inventive effort. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
The particular embodiments and examples described above illustrate but do not limit the invention. It is understood that other embodiments of the invention may be made and that the specific embodiments and examples described herein are not exhaustive.
Claims (10)
1. A heating needle assembly for application to an aerosol-generating system, comprising a heating mandrel (102) and a mounting base (104); the center of the mounting base (104) is provided with a through hole, one end of the heating core rod (102) is fixed in the through hole of the mounting base (104), and the heating core rod is characterized in that: the heating core rod is characterized in that a heating circuit is arranged on the outer wall of the heating core rod (102), the heating circuit comprises a power supply connecting wire (108), a heating circuit (109) and a conducting circuit (110), positive and negative poles of the power supply connecting wire (108) are connected with one end of the heating core rod (102), the conducting circuit (110) is divided into two sections, one end of the heating circuit (109) is connected with one pole of one power supply connecting wire (108) in each section, and a conduction loop from the power supply connecting wire (108) to the heating circuit (109) is formed.
2. A heater pin assembly for use in an aerosol-generating system according to claim 1, wherein: the heating core rod (102) is made of an insulating non-metal material or a metal material subjected to surface insulation treatment, or is made of a zirconium oxide material through powder sintering technology.
3. A heater pin assembly for use in an aerosol-generating system according to claim 1, wherein: the heating core rod (102) is conical, or the main body of the heating core rod is cylindrical and the other end of the heating core rod is conical, or the main body of the heating core rod is polygonal and the other end of the heating core rod is conical, or the main body of the heating core rod is elliptic cylindrical and the other end of the heating core rod is conical, the diameter of the cylindrical heating core rod (102) of the main body is 0.5-4 mm, and the length of the cylindrical heating core rod is 15-.
4. A heater pin assembly for use in an aerosol-generating system according to claim 1, wherein: the heating circuit further comprises an electrode connection terminal (111); the heating circuit (109) is arranged on one side, close to the conical tip, of the heating core rod (102), the conductive circuit (110) is arranged on one side, close to the power supply connecting line (108), of the surface of the heating core rod (102), the connecting point of the power supply connecting line (108) and the conductive circuit (110) is an electrode connecting end point (111), the electrode connecting end point (111) is formed by directly welding the positive electrode and the negative electrode of the power supply connecting line (108) on the conductive circuit (110), or the conductive material is connected to the corresponding position of the conductive circuit (110) in a non-insulating mode in a welding or bonding mode, and then the power supply connecting line (108) is correspondingly connected with the conductive material.
5. A heater pin assembly for use in an aerosol-generating system according to claim 3, wherein: the heating needle assembly for application to an aerosol-generating system further comprises a stiffening tube (103); one end of the reinforcing tube (103) is fixedly connected in a through hole of the mounting base (104), and one end of the heating core rod (102) with the conductive circuit (110) is fixedly connected in the reinforcing tube (103); the reinforced pipe (103) is an independent prefabricated part or is integrally formed with the mounting base (104), the reinforced pipe (103) is made of alumina, zirconia, polyether ether ketone, polymer or ceramic materials, and the diameter of the outer wall of the reinforced pipe (103) is 1-5 mm.
6. A heater pin assembly for use in an aerosol-generating system according to claim 5, wherein: the heating mandrel (102) and the reinforcing pipe (103) are connected through a first connecting layer (107), and the first connecting layer (107) is an adhesive bonding layer; or mechanical connection is adopted, and the mechanical connection is specifically as follows: a boss or a notch is arranged at one end of the outer wall of the heating core rod (102) connected with the reinforcing pipe (103), the notch or the boss is axially arranged on the inner wall of the reinforcing pipe (103), and the boss or the notch on the outer wall of the heating core rod (102) is matched and connected with the notch or the boss on the inner wall of the reinforcing pipe (103); or the outer wall of one end of the cylindrical heating mandrel (102) with the conical main body and the other end connected with the reinforcing pipe (103) is provided with an external thread, the inner wall of the reinforcing pipe (103) is provided with an internal thread, and the cylindrical heating mandrel (102) with the conical main body and the other end is connected with the reinforcing pipe (103) in a threaded manner.
7. A heater pin assembly for use in an aerosol-generating system according to claim 5 or 6, wherein: and coating a protective layer (105) on the surface of the heating core rod (102) which is not overlapped with the reinforcing pipe (103), wherein the protective layer (105) is a heat-resistant object plating layer.
8. A heater pin assembly for use in an aerosol-generating system according to claim 7, wherein: the mounting base (104) is made of a metal material or a non-metal inorganic material or an organic polymer, when the mounting base (104) and the reinforcing pipe (103) are respectively separate prefabricated members, the mounting base (104) and the reinforcing pipe (103) are connected through a second connecting layer (106), the second connecting layer (106) is an adhesive bonding layer, or a mechanical connection is adopted, and the mechanical connection is specifically as follows: a convex column or a groove penetrating through two end faces of the through hole is arranged on the side wall of the through hole of the mounting base (104), a groove or a convex column is axially arranged at one end of the inner wall of the reinforcing pipe (103) connected with the through hole of the mounting base (104), and the convex column or the groove of the mounting base (104) is matched and connected with the groove or the convex column of the reinforcing pipe (103); or the through hole of the mounting base (104) is a threaded hole, an external thread is arranged at one end, connected with the through hole of the mounting base (104), of the outer wall of the reinforcing pipe (103), and the mounting base (104) is in threaded connection with the reinforcing pipe (103).
9. A method of manufacturing a heater pin assembly for use in an aerosol-generating system according to claim 7 or 8, wherein: the method comprises the following steps:
step 301, manufacturing or outsourcing parts of a heating needle assembly, wherein the parts of the heating needle assembly mainly comprise a mounting base (104), a reinforcing pipe (103) and a heating core rod (102);
step 302-positioning a heated mandrel (102);
step 303-manufacturing a one-side heating circuit (109); the heating circuit (109) comprises heating circuits on the upper side and the lower side, the heating circuit (109) on one side is manufactured on the positioned heating core rod (102), and raw materials selected by the heating circuit (109) are slurry, paint or patch type wires;
step 305-manufacturing the other side heating circuit (109); turning or moving the positioned heating core rod (102) to expose a working surface, and manufacturing a heating circuit (109) on the other side of the positioned heating core rod (102), wherein the raw material selected by the heating circuit (109) is slurry, paint or a patch type lead;
step 306-close the two sections of heating circuits (109); the two sections of heating circuits (109) which are respectively manufactured are sealed, and screen printing or direct coating of slurry is adopted in a sealing mode, so that a complete heating circuit (109) is formed;
308-manufacturing a conductive circuit (110) on one side, wherein the conductive circuit (110) comprises a conductive circuit on the upper side and a conductive circuit on the lower side; manufacturing a conductive circuit (110) on one side of the positioned heating core rod (102), wherein the raw material of the conductive circuit (110) is slurry, paint or a patch type lead;
step 310-make the other side conductive circuit (110); the positioned heating core rod (102) needs to be turned over or moved, the working surface is exposed, a conductive circuit (110) on the other side is manufactured on the positioned heating core rod (102), and raw materials selected by the conductive circuit (110) are slurry, paint or a patch type lead;
step 311, sintering and curing; sintering and curing the preliminarily manufactured conductive circuit (110) and the heating circuit (109) at the sintering and curing temperature of 700 ℃ and 900 ℃ for 5-13min so that the slurry is completely cured and is tightly combined with the heating core rod (102);
step 312 — checking; inspecting the sintered heat-generating circuit (109) and conductive circuit (110) to check whether they satisfy a predefined criterion; if the product is qualified, the next step is carried out, and if the product is not qualified, the product is regarded as a waste product, and the subsequent step is not carried out;
step 313-make the protective layer (105); coating the raw material on the corresponding position of the heating core rod (102) according to the predefined parameters in a spraying, soaking, printing, pasting or rolling brush mode;
step 314-cure; curing and molding the primarily manufactured protective layer (105), wherein the curing temperature is 550-700 ℃, and the time is 8-12 min;
step 315-make electrode connection (111); firstly, processing two tail ends of a manufactured conductive circuit (110), wherein the processing contents comprise cleaning, scribing, manufacturing a bonding pad and connecting a conductor in sequence;
step 316, gluing; when glue is used for the first connection layer (107), or both glue and mechanical structure, this step will apply glue in a predefined manner at the respective locations;
step 317-assembling the reinforcement pipe (103) and the mounting base (104); firstly, assembling a reinforcing pipe (103) to a corresponding position of a heating core rod (102) according to a preset mode, and then assembling a mounting base (104) to a corresponding position of an assembly formed by the reinforcing pipe (103) and the heating core rod (102) according to a preset mode; or the integrally formed reinforcing tube (103) and the mounting base (104) are assembled on the corresponding position of the heating core rod (102) together according to a preset mode to form an assembly body;
step 320-curing glue; solidifying the glue according to the requirements of the glue, wherein the solidifying process comprises the following steps: standing the assembly body for 10-13h at room temperature, standing the assembly body for 1-3h at 60-100 ℃, and finally standing the assembly body for 1-3h at 100-250 ℃, slowly cooling to room temperature, and finishing curing;
step 321-connecting the power connection line (108); connecting a power supply connecting wire (108) with the electrode connecting part (111);
step 322-checking; inspecting the heating needle assembly (101) obtained through the steps so as to remove products which do not meet the quality requirement;
step 323-marking and warehousing.
10. A method of making a heater pin assembly for use in an aerosol-generating system according to claim 9, wherein:
adding a step 304-precuring between the step 303 and the step 305; curing the heating circuit (109) on one side manufactured in the step 303 at the curing temperature of 180 ℃ and 250 ℃ for 5-12 min;
adding a step 307 of pre-curing between the step 306 and the step 308; curing the two sections of closed heating circuits (109) manufactured in the step 306 at the curing temperature of 180 ℃ and 250 ℃ for 5-12 min;
adding step 309-precuring between step 308 and step 310; curing the conductive circuit (110) on one side manufactured in the step 308 at the curing temperature of 180 ℃ and 250 ℃ for 5-12 min;
in the step 317, when the reinforcing pipe (103) and the mounting base (104) are not integrally formed, after the reinforcing pipe (103) is assembled to the corresponding position of the heating mandrel (102) in a preset manner and before the mounting base (104) is assembled, a second connecting layer (106) is added on the surface where the mounting base (104) and the reinforcing pipe (103) are connected with each other, and when glue is used for the second connecting layer (106) or when glue and a mechanical structure are simultaneously used, the step applies the glue on the surface where the mounting base (104) and the reinforcing pipe (103) are connected with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010374309.2A CN111418896A (en) | 2020-05-06 | 2020-05-06 | Heating needle assembly for an aerosol-generating system and corresponding method of manufacture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010374309.2A CN111418896A (en) | 2020-05-06 | 2020-05-06 | Heating needle assembly for an aerosol-generating system and corresponding method of manufacture |
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| CN111418896A true CN111418896A (en) | 2020-07-17 |
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| CN202010374309.2A Withdrawn CN111418896A (en) | 2020-05-06 | 2020-05-06 | Heating needle assembly for an aerosol-generating system and corresponding method of manufacture |
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Cited By (6)
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| CN112351518A (en) * | 2020-10-30 | 2021-02-09 | 深圳市基克纳科技有限公司 | Heating body |
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| WO2023148913A1 (en) * | 2022-02-04 | 2023-08-10 | 日本たばこ産業株式会社 | Heating unit, flavor inhaler, and smoking system |
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Application publication date: 20200717 |