CN111657557A

CN111657557A - Heating device, method for manufacturing same, and heating non-combustible smoking set

Info

Publication number: CN111657557A
Application number: CN202010427359.2A
Authority: CN
Inventors: 陈平
Original assignee: Shenzhen Huachengda Precision Industry Co Ltd
Current assignee: Shenzhen Huachengda Precision Industry Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-09-15

Abstract

The invention discloses a heating device and a manufacturing method thereof, and a smoking set without burning during heating, wherein the heating device comprises a first heating component; the first heating assembly comprises a first shell used for being in contact with tobacco, a first heating piece matched on the first shell and used for conducting heat, and a first insulator arranged between the first heating piece and the first shell; the first heating piece generates heat after being electrified, the heat is conducted to the first shell through the first insulator, and tobacco is heated through the first shell and is not combusted to generate smoke. The heating device is used for heating non-combustion smoking set, is formed by matching the heating element, the insulator and the shell, realizes heating on tobacco by electrifying and heating the heating element, and has simpler and more convenient manufacture and greatly improved product consistency and service life compared with a heating conducting layer formed by the existing thick film printing process.

Description

Heating device, method for manufacturing same, and heating non-combustible smoking set

Technical Field

The invention relates to the technical field of heating non-combustion smoking set, in particular to a heating device and a manufacturing method thereof, and a heating non-combustion smoking set.

Background

At present, the cigarette baking heater is not burnt at low temperature, and the main process of a heating body is to print an electrically heated conductive layer on the surface of insulated metal or ceramic by a thick film printing process. The above process has the following disadvantages:

the resistance slurry is a mixture of metal, alloy powder and a binder, so that the problem of uneven mixing exists, the resistance is unstable, and the consistency of the product is poor; the electric heating conducting layer formed by thick film printing has small sectional area, is easy to age and break when working in a high-temperature environment for a long time, and has short service life. In addition, the conventional processes have various problems such as a large number of manufacturing steps and high prices of materials and equipment.

Disclosure of Invention

The present invention is directed to a heating device and a method for manufacturing the same, and a smoking set with the heating device and capable of preventing combustion, which are used to improve product consistency and service life.

The technical scheme adopted by the invention for solving the technical problems is as follows: providing a heating device for heating a non-burning smoking article, the heating device comprising a first heating element; the first heating assembly comprises a first shell used for being in contact with tobacco, a first heating piece matched on the first shell and used for conducting heat, and a first insulator arranged between the first heating piece and the first shell;

the first heating piece generates heat after being electrified, the heat is conducted to the first shell through the first insulator, and tobacco is heated through the first shell and is not combusted to generate smoke.

Preferably, the first heating assembly further comprises a first high temperature resistant non-stick coating disposed on a surface of the first housing for contact with tobacco.

Preferably, the thickness of the first high-temperature resistant non-stick coating is 0.5-500 μm.

Preferably, one end of the first shell is open to form an open end; the outer surface of the first housing forms a heating surface in contact with the tobacco;

the first heating element is inserted into the first shell along the length direction of the first shell, and two pins of the first heating element extend out of the open end of the first shell;

the first insulator is filled in the first shell and covers the first heating element.

Preferably, the first housing is closed at the other end to form a closed end, and the closed end is conical.

Preferably, an insulating seat is formed at an end of the first insulator;

the end face of the open end of the first shell is in contact with the insulating base at intervals, or the end of the open end of the first shell is embedded into the insulating base.

Preferably, the first heat generating member is in a shape of a sheet, a spiral, or a tube.

Preferably, the heating device further comprises a second heating assembly; the first heating component axially penetrates through the second heating component, and an annular space for containing tobacco is formed between the outer periphery of the first heating component and the inner periphery of the second heating component.

Preferably, the second heating assembly comprises a cylindrical second shell with two open ends, a second insulator sleeved on the periphery of the second shell, and a second heating element embedded in the second insulator and positioned on the periphery of the second shell;

the two pins of the second heating piece and the two pins of the first heating piece extend out of the second insulator.

Preferably, the second heating assembly further comprises a second high temperature resistant non-stick coating disposed on an inner surface of the second housing.

Preferably, the thickness of the second high-temperature resistant non-stick coating is 0.5-500 μm.

Preferably, one end of the second insulator is open and communicates with the annular space;

the other end of the second insulator opposite to the first insulator is closed to form a closed end, and at least one second vent hole is formed in the closed end;

the first heating assembly is secured to the closed end of the second insulator.

Preferably, the second heating element comprises a heating tube, and a hollow part is arranged on the side wall of the heating tube.

Preferably, the first housing is a housing with two opposite ends open; the inner surface of the first housing forms a heating surface in contact with the tobacco;

the first insulator is of a tubular structure and is sleeved on the periphery of the first shell;

the first heating piece is embedded in the first insulator along the length direction of the first insulator and is positioned on the periphery of the first shell; two pins of the first heating piece extend out of the first insulator.

Preferably, the first heat generating part includes a heat generating tube; the side wall of the heating tube is provided with a hollow part.

Preferably, said first insulator is open at one end and communicates with an open end of said first housing to form an inlet for tobacco to be inserted into said first housing;

the other end of the first insulator opposite to the first insulator is sealed to form a closed end, and at least one first vent hole is formed in the closed end.

The invention also provides a method of manufacturing a heating device as defined in any one of the preceding claims, comprising the manufacture of a first heating element; the manufacturing of the first heating assembly comprises the steps of:

s1.1, preparing insulation slurry of a first shell, a first heating element and a first insulator;

s1.2, placing the first shell and the first heating piece in a forming die and fixing;

the first heating element is positioned in or at the periphery of the first shell;

s1.3, injecting the insulating slurry into the forming mold, cooling and hardening to form a blank of a first insulator, and forming a first heating assembly semi-finished product together with the first shell and the first heating piece;

the blank body is filled in the first shell and covers the first heating piece; or the blank body is coated on the peripheries of the first shell and the first heating piece and fills the interval between the first shell and the first heating piece;

s1.4, sintering the semi-finished product of the first heating assembly at a high temperature, and curing and molding the blank into a first insulator to obtain the first heating assembly.

Preferably, the method of manufacturing the heating device further comprises the manufacture of a second heating assembly; the manufacturing of the second heating assembly comprises the following steps:

s2.1, preparing insulation slurry of a second shell, a second heating piece and a second insulator;

s2.2, placing the second shell and the second heating piece in a forming die and fixing;

the second heating piece is positioned at the periphery of the second shell;

s2.3, injecting the insulating slurry into the forming die, cooling and hardening to form a blank of a second insulator, and forming a second heating assembly semi-finished product together with the second shell and the second heating piece;

the blank body is coated on the peripheries of the second shell and the second heating piece and fills the space between the second shell and the second heating piece;

and S2.4, sintering the semi-finished product of the second heating assembly at a high temperature, and curing and molding the blank into a second insulator to obtain the second heating assembly.

Preferably, the method of manufacturing the heating apparatus further comprises: axially penetrating the first heating assembly into the second heating assembly;

an annular space for accommodating tobacco is formed between the outer periphery of the first heating assembly and the inner periphery of the second heating assembly; the two pins of the first heating piece and the two pins of the second heating piece extend out of the second insulator.

The invention also provides a heating non-combustion smoking set comprising the heating device.

The heating device is used for heating non-combustion smoking set, is formed by matching the heating piece, the insulator and the shell, realizes heating on tobacco by electrifying and heating the heating piece, and has simpler and more convenient manufacture compared with a heating conducting layer formed by the existing thick film printing process, and greatly improves the consistency and the service life of the product; the materials and equipment required by production are simple and cheap, and the production cost is greatly reduced while the product performance is improved.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural view of a heating apparatus according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view in the longitudinal direction of FIG. 1;

FIG. 3 is a schematic view of the exploded structure of FIG. 1;

FIG. 4 is a schematic sectional view of a heating apparatus according to a second embodiment of the present invention;

FIG. 5 is an exploded view of a heating apparatus according to a second embodiment of the present invention;

FIG. 6 is a schematic sectional view of a heating apparatus according to a third embodiment of the present invention

FIG. 7 is a schematic sectional view of a heating apparatus according to a fourth embodiment of the present invention;

FIG. 8 is an exploded view schematically showing a heating apparatus according to a fourth embodiment of the present invention;

FIG. 9 is a schematic sectional view of a heating apparatus according to a fifth embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of a heated non-burning smoking article according to an embodiment of the invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

The heating device is used for heating the non-combustion smoking set, heating the tobacco without combustion, and atomizing the tobacco to generate smoke for a user to inhale.

As shown in fig. 1 to 3, the heating apparatus according to the first embodiment of the present invention includes a first heating unit 10.

The first heating assembly 10 includes a first housing 11, a first heat generating member 12 fitted on the first housing 11, and a first insulator 13 disposed between the first heat generating member 12 and the first housing 11. The first shell 11 is used for contacting with tobacco, the first heating element 12 is used for conducting electricity and heating, and the first insulator 13 is used for isolating the first heating element 12 and the first shell 11, so that the problems of short circuit and the like caused by contact of the first heating element 12 and the first shell 11 are avoided. The first heating element 12 generates heat after being electrified, the heat is conducted to the first shell 11 through the first insulator 13, and the tobacco is heated through the first shell 11 and is not combusted so as to atomize and generate smoke.

In this embodiment, the first housing 11 is a housing having one closed end and the other open end. The first heating element 12 is inserted into the first housing 11 along the length direction of the first housing 11, and two pins 121 of the first heating element 12 extend out of the open end of the first housing 11 to connect with a power supply. The first insulator 13 is filled in the first housing 11 and covers the first heat generating element 12.

The inner surface of the first shell 11 is tightly attached to the first insulator 13; the outer surface of the first housing 11 forms a heating surface in contact with the tobacco. The first heating assembly 10 is used by inserting the first housing 11 into tobacco and heating the surface into the tobacco to heat and atomize the tobacco.

In order to allow the first heating element 10 to be inserted smoothly into the tobacco, the closed end of the first casing 11 is tapered, and the tip at the top of the tapered end preferably penetrates into the tobacco. The closed end of the first housing 11 may also be provided with a through hole for ventilation or grouting, etc.

The first housing 11 is made of a material resistant to temperatures exceeding 500 ℃, such as metal, ceramic, quartz, mica, glass, etc.

Specifically, in the present embodiment, the first housing 11 is a flat hollow housing. The first heat generating body 12 is formed by bending a long metal sheet along the inner circumference of the first housing 11, and two ends of the metal sheet are connected to the two pins 121 respectively and correspond to the open end of the first housing 11.

The meter resistance (resistance per meter) of the heat generating body of the first heat generating body 12 is larger than the meter resistance of the pin 121.

The first heating element 12 is made of a metal material having a temperature curve of resistance, and preferably made of at least one of nichrome, ferrochromium alloy, stainless steel, nickel wire, nickel-iron alloy, copper-nickel alloy, titanium alloy, and the like.

The first insulator 13 is filled in the first housing 11 and covers the first heat generating element 12, so that the first heat generating element 12 is embedded in the first insulator 13 and insulated from the first housing 11. The first insulator 13 has a cylindrical structure, and has a shape corresponding to the inner peripheral shape of the first housing 11.

The first insulator 13 is preferably made of a porous ceramic material, and has properties of electrical insulation, good thermal conductivity, and the like. During preparation, the porous ceramic material powder, the binder and the like are firstly prepared into insulating slurry, and then the insulator with certain structural strength is formed through filling, curing and the like.

Further, the first heating assembly 10 further comprises a first high temperature resistant non-stick coating (not shown) disposed on the surface of the first housing 11 for contacting tobacco. In this embodiment, since the outer surface of the first casing 11 is a heating surface contacting with tobacco, the first high temperature resistant non-stick coating is disposed on the outer surface of the first casing 11, so as to ensure smooth release of tobacco on the first casing 11, prevent tobacco residue from adhering thereto after use, and ensure cleanness of the outer surface of the first casing 11.

The first high-temperature resistant non-stick coating is made of a material capable of bearing high temperature of more than 300 ℃. Alternatively, the first high temperature resistant non-stick coating has a thickness of 0.5 μm to 500. mu.m.

The method of manufacturing the heating apparatus of the first embodiment includes the manufacture of the first heating element 10. Referring to fig. 1-3, the fabrication of the first heating assembly 10 may include the steps of:

s1.1, preparing insulation slurry of the first shell 11, the first heating element 12 and the first insulator 13.

The first housing 11 may be manufactured by stamping, etching, cutting, drawing, welding, injection molding, sintering, etc. The first heat generating element 12 may be formed by etching, cutting, welding, winding, etc.

This step S1.1 also includes applying a first high temperature resistant non-stick coating to the outer surface of the first housing 11.

S1.2, placing the first shell 11 and the first heating element 12 in a forming die and fixing.

The first heat generating element 12 is located in the first housing 11, the length direction of the first heat generating element 12 is parallel to the length direction of the first housing 11, and the first heat generating element 12 and the first housing 11 are not in contact with each other at intervals. The two pins 121 of the first heat generating element 12 are located outside the first housing 11.

S1.3, injecting the insulating slurry into a forming die, cooling and hardening to form a blank of the first insulator 13, and forming a first heating assembly semi-finished product together with the first shell 11 and the first heating piece 12.

Wherein, when injecting the insulating paste, the insulating paste is mainly injected into the first case 11 while also filling the space between the first case 11 and the first heat generator 12.

After the blank is formed, the blank is filled in the first housing 11 and covers the first heat generating element 12.

And S1.4, sintering the semi-finished product of the first heating assembly at a high temperature, and solidifying and molding the blank to form a first insulator 13 to obtain the first heating assembly 10.

And taking the first heating assembly semi-finished product out of the forming die, putting the first heating assembly semi-finished product into a sintering carrier, and placing the first heating assembly semi-finished product into a high-temperature sintering furnace for high-temperature sintering, so that the blank is solidified and formed into a first insulator 13 which is tightly combined between the first shell 11 and the first heating body 12 to form the first heating assembly 10.

As shown in fig. 4 and 5, the heating apparatus according to the second embodiment of the present invention includes a first heating element 20.

The first heating assembly 20 includes a first housing 21, a first heat generating member 22 fitted on the first housing 21, and a first insulator 23 disposed between the first heat generating member 22 and the first housing 21. The first shell 21 is used for being in contact with tobacco, the first heating element 22 is used for conducting electricity and heating, and the first insulator 23 is used for isolating the first heating element 22 from the first shell 21, so that the problems of short circuit and the like caused by contact of the first heating element 22 and the first shell 21 are avoided. The first heating element 22 generates heat after being electrified, the heat is conducted to the first shell 21 through the first insulator 23, and the tobacco is heated through the first shell 21 to be atomized to generate smoke.

The first housing 21 is a housing having one end closed and the other end opened. The first heating element 22 is inserted into the first casing 21 along the length direction of the first casing 21, and two pins 221 of the first heating element 22 extend out of the open end of the first casing 21 to be externally connected with a power supply. The first insulator 23 is filled in the first case 21 and covers the first heat generating element 22.

The inner surface of the first housing 21 is closely attached to the first insulator 23; the outer surface of the first housing 21 forms a heating surface in contact with the tobacco. The first heating assembly 20 is used by inserting the first housing 21 into the tobacco and heating the surface into the tobacco to heat and atomize the tobacco.

Unlike the first embodiment described above, in the present embodiment, the first housing 21 is a hollow housing of a cylindrical shape. The closed end of the first housing 21 is conically configured to form a tapered end 211. The tapered end 211 may be integrally formed with the first housing 21, or may be separately provided and then integrally connected. The closed end of the first housing 21 may be provided with a through hole for ventilation or grouting, etc.

The first heat generating element 22 has a spiral shape corresponding to the cylindrical first case 21 and has a diameter smaller than the inner diameter of the first case 21. The heating body of the first heating element 1 is formed by spirally winding a heating wire, and two ends of the heating wire are corresponding to the open end of the first casing 21 and are respectively connected with two pins 221. The meter-resistance of the heat generating body of the first heat generating body 22 is greater than the meter-resistance of the pin 221.

The first heating element 22 is made of a metal material having a temperature curve of resistance, and preferably made of at least one of nichrome, ferrochromium alloy, stainless steel, nickel wire, nickel-iron alloy, copper-nickel alloy, titanium alloy, and the like.

The first insulator 23 is filled in the first housing 21 and covers the first heat generating element 22, so that the first heat generating element 22 is embedded in the first insulator 23 and insulated from the first housing 21. The first insulator 23 has a cylindrical structure corresponding to the inner space of the first housing 11.

The first insulator 23 is preferably made of a porous ceramic material, and has properties of electrical insulation, good thermal conductivity, and the like. During preparation, the porous ceramic material powder, the binder and the like are firstly prepared into insulating slurry, and then the insulator with certain structural strength is formed through filling, curing and the like.

Further, in the present embodiment, an insulating seat 231 is formed at an end of the first insulator 23. The insulating holder 231 is integrally formed on the first insulator 23.

An end surface of the open end of the first housing 21 may abut against the insulating holder 231, and the end surface of the open end of the first housing 21 may be spaced apart from the insulating holder 231. Alternatively, as shown in fig. 4, an end portion of the open end of the first housing 21 is embedded in the insulating seat 231, so that the end surface of the open end is located in the insulating seat 231, and the insulating seat 231 covers the outer periphery of the open end of the first housing 21, and at the same time, covers part of the pin 221 of the first heat-generating component 22, thereby improving structural stability.

The first heating assembly 20 further comprises a first high temperature resistant non-stick coating (not shown) disposed on the surface of the first housing 21 for contact with tobacco. The specific arrangement of the first high-temperature resistant non-stick coating layer can refer to the first embodiment, and details are not repeated herein.

The manufacturing method of the heating device of the second embodiment can refer to the manufacturing method of the heating device of the first embodiment, and is not repeated herein.

As shown in fig. 6, the heating apparatus according to the third embodiment of the present invention includes a first heating member 30.

The first heating assembly 30 includes a first housing 31, a first heat generating member 32 fitted on the first housing 31, and a first insulator 33 disposed between the first heat generating member 32 and the first housing 31. The first shell 31 is used for contacting with tobacco, the first heating element 32 is used for conducting heat, and the first insulator 33 is used for isolating the first heating element 32 and the first shell 31, so that the problems of short circuit and the like caused by contact of the first heating element 32 and the first shell 31 are avoided. The first heating element 32 generates heat after being electrified, the heat is conducted to the first shell 31 through the first insulator 33, and the tobacco is heated through the first shell 31 to be atomized to generate smoke.

The first housing 31 is a housing having one end closed and the other end opened. The first heating element 32 is inserted into the first housing 31 along the length direction of the first housing 31, and two pins 331 of the first heating element 32 extend out of the open end of the first housing 31 to be externally connected to a power supply. The first insulator 33 is filled in the first housing 31 and covers the first heat generating element 32.

The inner surface of the first housing 31 is closely attached to the first insulator 33; the outer surface of the first housing 31 forms a heating surface in contact with the tobacco. The first heating element 30 is in use inserted into the tobacco with the first housing 31 and the heating surface is heated and atomised into the tobacco.

In the present embodiment, the first housing 31 is a cylindrical hollow housing. The closed end of the first housing 31 is conically configured to form a tapered end 311. The tapered end 311 may be integrally formed with the first housing 31, or may be separately provided and then integrally connected to each other. The first housing 31 may be provided with a through hole at its closed end for ventilation or grouting, etc.

The first heat generating body 32 has a spiral shape corresponding to the cylindrical first case 31, and has a diameter smaller than the inner diameter of the first case 31. The heating body of the first heating element 1 is formed by spirally winding a heating wire, and two ends of the heating wire are corresponding to the open end of the first shell 31 and are respectively connected with two pins 331. The meter resistance of the heat generating body of the first heat generating body 32 is greater than that of the pin 331.

Both the first housing 31 and the first heat generating body 32 may be made of the same material as described above with reference to the second embodiment.

Further, in the present embodiment, an insulating seat 331 is formed at an end portion of the first insulator 33. The insulating base 331 is integrally formed on the first insulator 33, and has a diameter larger than that of the first insulator 33.

The present embodiment is different from the second embodiment described above in that: an accommodating portion 312 is connected to the open end of the first housing 31, and the insulating base 331 is filled in the accommodating portion 312. The receptacle 312 and the insulator base 331 are configured to serve as a mounting base for the first heating assembly 30 to facilitate installation of the heating device in a smoking article.

The first heating assembly 30 also includes a first high temperature resistant non-stick coating (not shown). The specific arrangement of the first high temperature resistant non-stick coating, etc. can refer to the first embodiment described above.

The manufacturing method of the heating device of the third embodiment can refer to the manufacturing method of the heating device of the first embodiment, and is not repeated herein.

The

first heat generators

22 and 32 in the second and third embodiments are not limited to a spiral shape, and may be provided in other shapes such as a tubular shape.

As shown in fig. 7 and 8, the heating apparatus according to the fourth embodiment of the present invention includes a first heating element 40.

The first heating assembly 40 includes a first housing 41, a first heat generating member 42 fitted on the first housing 41, and a first insulator 43 disposed between the first heat generating member 42 and the first housing 41. The first shell 41 is used for contacting with tobacco, the first heating element 42 is used for conducting heat, and the first insulator 43 is used for isolating the first heating element 42 and the first shell 41, so that the problems of short circuit and the like caused by contact of the first heating element 42 and the first shell 41 are avoided. The first heating element 42 generates heat after being electrified, the heat is conducted to the first shell 41 through the first insulator 43, and the tobacco is heated through the first shell 41 to be atomized to generate smoke.

In this embodiment, the first housing 41 is a housing with opposite ends open. The first insulator 43 is a tubular structure, and is sleeved on the outer periphery of the first shell 41; the outer surface of the first housing 41 is closely attached to the inner surface of the first insulator 43. The first heat generating element 42 is embedded in the first insulator 43 along the length direction of the first insulator 43, is located at the periphery of the first housing 41, and is insulated from the first housing 41 by the first insulator 43. Two pins 421 of the first heat-generating element 42 extend out of the first insulator 43 for external power supply.

The inner surface of the first housing 41 forms a heating surface in contact with the tobacco. The first heating element 40 is adapted to be inserted into the first housing 41 in use, and to contact the heated surface through which the tobacco is heated and atomised.

The first housing 41 is made of a material resistant to temperatures exceeding 500 ℃, such as metal, ceramic, quartz, mica, glass, etc.

Specifically, in the present embodiment, the first housing 41 is a hollow cylindrical housing, and the first insulator 43 is correspondingly in a shape of a circular tube and is sleeved on the outer periphery of the first housing 41. Preferably, the axial length of the first insulator 43 is greater than the axial length of the first housing 41 so that the end of the first housing 41 does not protrude out of the first insulator 43. The first insulator 43 is open at one end and communicates with an open end of the first housing 41, forming an inlet for tobacco to be inserted into the first housing 41; the opposite end of the first insulator 43 is closed to form a closed end, and the closed end is provided with at least one first vent hole 431.

The first heat generating body 42 includes a heat generating tube corresponding to the first case 41 having a cylindrical shape. The heating tube can be formed by winding a heating sheet, and a hollow part 422 can be further arranged on the side wall of the heating tube. The two pins 421 are oppositely connected to two sides of the end of the heating tube. The meter resistance of the first heat generating body 42 is greater than the meter resistance of the pin 421.

The first heating element 42 is made of a metal material having a temperature curve of resistance, and preferably made of at least one of nichrome, ferrochromium alloy, stainless steel, nickel wire, nickel-iron alloy, copper-nickel alloy, titanium alloy, and the like.

The first insulator 43 is preferably made of a porous ceramic material, and has properties of electrical insulation, good thermal conductivity, and the like. During preparation, the porous ceramic material powder, the binder and the like are firstly prepared into insulating slurry, and then the insulator with certain structural strength is formed through filling, curing and the like. A portion of the first insulator 43 is filled in the space between the first case 41 and the first heat emitter 42 to insulate the two.

Further, the first heating assembly 40 also includes a first high temperature resistant non-stick coating (not shown) disposed on the surface of the first housing 41 for contact with tobacco. In this embodiment, since the inner surface of the first casing 41 is a heating surface contacting with the tobacco, the first high temperature resistant non-stick coating is disposed on the inner surface of the first casing 41 to ensure smooth release of the tobacco in the first casing 41, prevent the tobacco residue from adhering to the inner surface of the first casing 41 after use, and ensure the cleanness of the inner surface of the first casing 41.

The method of manufacturing the heating apparatus of the fourth embodiment includes the manufacture of the first heating element 40. Referring to fig. 7 and 8, the fabrication of the first heating assembly 40 may include the steps of:

s1.1, preparing insulation slurry of the first shell 41, the first heating element 42 and the first insulator 43.

The first housing 41 may be manufactured by stamping, etching, cutting, drawing, welding, injection molding, sintering, and the like. The first heat generating element 42 may be formed by etching, cutting, welding, winding, etc.

This step S1.1 also includes applying a first high temperature resistant non-stick coating to the inner surface of the first housing 41.

S1.2, placing the first shell 41 and the first heating element 42 in a forming die and fixing.

The first heat generating member 42 is located at the periphery of the first housing 41. The length direction of the first heat generating element 42 is parallel to the length direction of the first housing 41, and the first heat generating element 42 and the first housing 41 are not in contact with each other at an interval. The two pins 421 of the first heat-generating element 42 are located outside the first housing 41.

S1.3, injecting the insulating slurry into a forming die, cooling and hardening to form a blank of the first insulator 43, and forming a first heating assembly semi-finished product together with the first shell 41 and the first heating piece 42.

Wherein, in injecting the insulating paste, the insulating paste is mainly injected to the peripheries of the first case 41 and the first heat generating element 42 while also filling the space between the first case 41 and the first heat generating element 42.

After the blank is formed, the blank is wrapped around the first case 41 and the first heat generating element 42 and fills the space between the first case 41 and the first heat generating element 42.

And S1.4, sintering the semi-finished product of the first heating assembly at a high temperature, and solidifying and molding the blank to form a first insulator 43 to obtain the first heating assembly 40.

And taking the first heating assembly semi-finished product out of the forming die, putting the first heating assembly semi-finished product into a sintering carrier, and placing the first heating assembly semi-finished product into a high-temperature sintering furnace for high-temperature sintering, so that the blank is cured and formed into a first insulator 43 which is tightly combined between the first shell 41 and the first heating body 42 to form the first heating assembly 40.

As shown in fig. 9, a heating apparatus according to a fifth embodiment of the present invention includes a first heating unit 50 and a second heating unit 60. The first heating element 50 is axially disposed through the second heating element 60, and an annular space 70 is formed between the outer periphery of the first heating element 50 and the inner periphery of the second heating element 60 for receiving tobacco therein.

The first heating assembly 50 includes a first housing 51, a first heating element 52 disposed in the first housing 51, and a first insulator 53 filled in the first housing 51 and covering the first heating element 52. The outer surface of the first housing 51 forms a heating surface in contact with the tobacco. The first heating element 50 may be the first heating element of the first to third embodiments described above.

The second heating assembly 60 includes a cylindrical second housing 61 with two open ends, a second insulator 63 fitted around the outer circumference of the second housing 61, and a second heat generating member 62 embedded in the second insulator 63 and located at the outer circumference of the second housing 61. The two pins 621 of the second heat generating member 62 and the two pins 521 of the first heat generating member 52 both extend out of the second insulator 63 for external power supply.

The second heat generating component 62 includes a heat generating tube, a hollow portion is disposed on a side wall of the heat generating tube, and the specific arrangement and material selection of the second heat generating component 62 can refer to the first heat generating component 42 in the fourth embodiment shown in fig. 7.

One end of the second insulator 63 is open and communicates with the annular space 70. The opposite end of the second insulator 63 is closed to form a closed end, and at least one second ventilation hole 631 is formed in the closed end. The first heating element 50 is fixed to the closed end of the second insulator 63.

The second heating element 60 further comprises a second high temperature resistant non-stick coating (not shown) disposed on the inner surface of the second housing 61, which can withstand temperatures above 300 ℃. The thickness of the second high-temperature resistant non-stick coating is 0.5-500 mu m.

It is to be understood that the second heating assembly 60 can be specifically referred to the first heating assembly in the fourth embodiment described above.

Compared with the heating devices of the first to fourth embodiments, the heating device of the present embodiment has the advantages that the first heating element 50 and the second heating element 60 are arranged to heat and atomize tobacco more sufficiently, so as to generate more smoke, and meet the corresponding requirements of users.

The manufacturing method of the heating apparatus of the fifth embodiment includes manufacturing the first heating element 50 and manufacturing the second heating element 60.

The first heating element 50 can refer to the manufacturing method of the first heating element in the first embodiment. Referring to fig. 9, the manufacture of the second heating assembly 60 includes the steps of:

s2.1, preparing insulation slurry of a second shell 61, a second heating element 62 and a second insulator 63;

s2.2, placing the second shell 61 and the second heating element 62 in a forming die and fixing.

The second heat generating member 62 is located at the periphery of the second case 61.

And S2.3, injecting the insulating slurry into a forming die, cooling and hardening to form a blank of a second insulator 63, and forming a second heating assembly semi-finished product together with the second shell 61 and the second heating piece 62.

The blank is wrapped around the second case 61 and the second heat generating member 62 and fills the space between the second case 61 and the second heat generating member 62.

And S2.4, sintering the semi-finished product of the second heating assembly at a high temperature, and solidifying and molding the blank to form a second insulator 63 to obtain the second heating assembly 63.

The manufacturing steps of the second heating element 60 can be referred to the manufacturing method of the first heating element in the fourth embodiment.

Further, the manufacturing method of the heating apparatus of the fifth embodiment further includes: the first heating element 50 is axially disposed through the second heating element 60 with an annular space 70 formed therebetween for receiving tobacco therein.

As shown in fig. 10, the heating non-combustion smoking set of the present invention includes a heating device 1, and the heating device 1 is the heating device according to any one of the first to fifth embodiments.

The heating non-combustion smoking set further comprises a shell 2, a power supply battery 3 and a cigarette case 4. Power supply battery 3 sets up in the one end of shell 2, and heating device 1 sets up in the other end of shell 2 to fix in shell 2 through matched with fixing base 5 and latch segment 6 etc.. The heating device 1 is connected to a power supply battery 3, so that the power supply battery 3 supplies power to the heating device.

A cartridge case 4 is fitted on the other end of the casing 2, and the heating device 1 is located inside the cartridge case 4. An opening is provided in the cartridge case 4 to communicate with the interior thereof, and tobacco 7 (which may be made into a cigarette form) is inserted into the cartridge case 4 through the opening and is connected to the heating device 1. The heating device 1 heats the tobacco after being powered by the power supply battery 3, so that the tobacco is atomized to generate smoke.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A heating device for heating a non-burning smoking article, the heating device comprising a first heating element; the first heating assembly comprises a first shell used for being in contact with tobacco, a first heating piece matched on the first shell and used for conducting heat, and a first insulator arranged between the first heating piece and the first shell;

2. The heating device of claim 1, wherein the first heating assembly further comprises a first high temperature resistant non-stick coating disposed on a surface of the first housing for contact with tobacco;

the thickness of the first high-temperature resistant non-stick coating is 0.5-500 mu m.

3. The heating device according to claim 1 or 2, wherein one end of the first housing is open to form an open end; the outer surface of the first housing forms a heating surface in contact with the tobacco;

4. A heating device as claimed in claim 3, wherein the first housing is closed at the opposite end to form a closed end, the closed end being tapered.

5. The heating apparatus as claimed in claim 3, wherein an insulating seat is formed at an end of the first insulator;

6. A heating device as claimed in claim 3, characterized in that the first heating element is in the form of a plate, a spiral or a tube.

7. The heating device of claim 3, further comprising a second heating assembly; the first heating component axially penetrates through the second heating component, and an annular space for containing tobacco is formed between the outer periphery of the first heating component and the inner periphery of the second heating component.

8. The heating device according to claim 7, wherein the second heating assembly comprises a cylindrical second casing with two open ends, a second insulator sleeved on the outer periphery of the second casing, and a second heat generating member embedded in the second insulator and located on the outer periphery of the second casing;

9. The heating device of claim 8, wherein the second heating assembly further comprises a second high temperature resistant non-stick coating disposed on an inner surface of the second housing;

the thickness of the second high-temperature resistant non-stick coating is 0.5-500 mu m.

10. The heating device of claim 8, wherein one end of the second insulator is open and communicates with the annular space;

11. The heating device of claim 8, wherein the second heat generating component comprises a heat generating barrel, and a hollow part is arranged on a side wall of the heat generating barrel.

12. The heating device according to claim 1 or 2, wherein the first housing is a housing open at opposite ends; the inner surface of the first housing forms a heating surface in contact with the tobacco;

13. The heating device of claim 12, wherein the first heating member comprises a heat-generating cartridge; the side wall of the heating tube is provided with a hollow part.

14. The heating device of claim 12, wherein said first insulator is open at one end and communicates with an open end of said first housing to form an inlet for tobacco to be inserted into said first housing;

15. A method of manufacturing a heating device according to any one of claims 1 to 14, comprising the manufacture of a first heating element; the manufacturing of the first heating assembly comprises the steps of:

16. The method of manufacturing a heating device of claim 15, further comprising manufacturing a second heating assembly; the manufacturing of the second heating assembly comprises the following steps:

the second heating piece is positioned at the periphery of the second shell;

17. The manufacturing method of a heating apparatus according to claim 16, characterized by further comprising: axially penetrating the first heating assembly into the second heating assembly;

18. A heated non-combustible smoking article comprising a heating device according to any one of claims 1 to 14.