CN113424997A - Sectional type electromagnetic heating assembly - Google Patents
Sectional type electromagnetic heating assembly Download PDFInfo
- Publication number
- CN113424997A CN113424997A CN202110747899.3A CN202110747899A CN113424997A CN 113424997 A CN113424997 A CN 113424997A CN 202110747899 A CN202110747899 A CN 202110747899A CN 113424997 A CN113424997 A CN 113424997A
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- Prior art keywords
- electromagnetic heating
- heating assembly
- magnetic
- material section
- substrate
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 38
- 230000005291 magnetic effect Effects 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 239000000696 magnetic material Substances 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 41
- 239000000956 alloy Substances 0.000 claims description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910000859 α-Fe Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 241000208125 Nicotiana Species 0.000 abstract description 18
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 18
- 230000000391 smoking effect Effects 0.000 abstract description 6
- 238000013021 overheating Methods 0.000 abstract description 5
- 235000019504 cigarettes Nutrition 0.000 abstract description 2
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 229910015360 Fe50Ni50 Inorganic materials 0.000 description 20
- 229910002546 FeCo Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229910000604 Ferrochrome Inorganic materials 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 229910001325 element alloy Inorganic materials 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
Abstract
The invention belongs to the technical field of novel cigarettes, and particularly relates to a sectional type electromagnetic heating assembly. The electromagnetic heating component comprises a substrate and an oxidation-resistant coating attached to the surface of the substrate; the substrate comprises a magnetic material section and a magnetic shielding material section; the magnetic material section accounts for 30-95% of the length of the substrate; when the tobacco is heated, the magnetic material section rapidly heats and heats the tobacco at the corresponding position, meanwhile, the surplus heat is conducted to the magnetic shielding material section, and then the tobacco at the corresponding position of the magnetic shielding material section is heated, so that the tobacco is heated in a segmented mode. The sectional type heating assembly can realize different heating efficiencies of two sections of magnetic and magnetic shields, optimizes the heating effect, and has high smoking speed and lasting smoking; not only improves the heat utilization efficiency, but also avoids the problems of local overheating and overhigh external temperature in the integral heating process.
Description
Technical Field
The invention belongs to the technical field of novel cigarettes, and particularly relates to a sectional type electromagnetic heating assembly.
Background
At present, the main heating mode in the appliance which does not burn tobacco is resistance heating, such as resistance wires, thermistors, MCH ceramics and the like. The heating mode has low thermal efficiency and is easy to generate local overheating because the ceramic protective layer with larger thickness exists in the structure.
The electromagnetic induction heating is to generate eddy current on the surface of the material through an alternating magnetic field, and heat the material through Joule effect and hysteresis loss effect, the heating mode has the advantages of high heating efficiency, wide application range and the like, and the heatable material comprises metal, non-metal conductors or various magnetic materials and the like. However, the electromagnetic heating component applied to the low-temperature tobacco appliance at present has low heat utilization rate, and the heating body component is prepared by the whole section of magnetic material, so that the problems of local overheating, overhigh external temperature and the like exist.
Disclosure of Invention
The invention aims to provide a sectional type electromagnetic heating assembly, which aims to solve the problems that the integral type electromagnetic heating assembly is low in heat utilization rate during electromagnetic heating, a heating body assembly is prepared from a whole section of magnetic material, local overheating exists, the external temperature is overhigh, and the like.
In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
a segmented electromagnetic heating assembly includes a substrate for performing heating;
the substrate comprises a magnetic material section for generating electromagnetic heating and a magnetic shielding material section which does not generate electromagnetic heating and conducts heat generated by the magnetic material section; the magnetic material section accounts for 30-95% of the length of the substrate;
further, the magnetic material section is a section of high magnetic permeability material or a plurality of sections of different magnetic permeability materials.
Furthermore, the magnetic permeability material is one or a multi-element alloy of Fe-based, Cr-based, Co-based or Ni-based alloy.
Further, the magnetic shielding material is one or more of copper, aluminum, silver, iron or ferrite.
Further, the overall shape of the substrate is one of conical shape, sheet shape, needle shape, cylindrical shape, prism shape and polygonal shape.
Furthermore, the length of the substrate is 15-30 mm, and the diameter of the substrate is 1.0-4.0 mm.
Further, the heating assembly further comprises an oxidation-resistant coating attached to the surface of the substrate.
Further, the oxidation resistant coating is one or more of aluminum oxide, zirconium oxide and silicon oxide, and the thickness of the oxidation resistant coating is 1-100 mu m.
Further, the magnetic material section and the magnetic shielding material section are connected through welding, threads or a clamping type connection.
Compared with the prior art, the invention has the beneficial effects that:
the sectional type electromagnetic heating assembly comprises a magnetic material section and a magnetic shielding material section, when tobacco is heated, the magnetic material section rapidly heats and heats the tobacco at the corresponding position, meanwhile, surplus heat is conducted to the magnetic shielding material section, and then the tobacco at the corresponding position of the magnetic shielding material section is heated, so that sectional type heating of the tobacco is realized. The sectional type heating assembly can realize different heating efficiencies of two sections of magnetic and magnetic shields, optimizes the heating effect, and has high smoking speed and lasting smoking; not only improves the heat utilization efficiency, but also avoids the problems of local overheating and overhigh external temperature in the integral heating process.
Drawings
FIG. 1 is a schematic cross-sectional view of a segmented electromagnetic heating assembly as described in example 1;
FIG. 2 is a schematic cross-sectional view of a segmented electromagnetic heating assembly as described in example 2;
FIG. 3 is a schematic cross-sectional view of a segmented electromagnetic heating assembly as described in example 3;
wherein, in fig. 1: 1. a substrate; 11. a Fe50Ni50 alloy segment; 12. a pure copper section; 2. an aluminum oxide coating; 3. an electromagnetic coil;
in fig. 2: 1. a substrate; 11. a Fe50Ni50 alloy segment; 102. a Fe64Ni36 alloy segment; 13. a pure copper section; 201. a silicon oxide coating; 3. an electromagnetic coil;
in fig. 3: 1. a substrate; 101. a FeCo alloy segment; 103. an aluminum section; 202. a zirconia coating; 3. an electromagnetic coil.
Detailed Description
The present invention will be described in further detail with reference to preferred embodiments, which are not intended to limit the scope of the present invention.
In the present application, it should be understood that the high magnetic permeability material is a ferromagnetic material with a magnetic permeability of 1000 or more;
the material with the magnetic permeability of 200-1000 is called a conventional magnetic permeability material, and the material with the magnetic permeability of below 200 is called a low magnetic permeability material. The magnetic material segment can be a whole segment of high-permeability material, or two ends or multiple segments formed by any combination of high-permeability material, conventional-permeability material and low-permeability material.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The application is further described with reference to examples of embodiments shown in the drawings.
Example 1
As shown in fig. 1, the sectional electromagnetic heating assembly provided by the present embodiment comprises a substrate 1 and an alumina coating 2 attached to the surface of the substrate 1, wherein the thickness of the alumina coating 2 is 100 μm; the matrix 1 is formed by combining two sections of a Fe50Ni50 alloy section 11 and a pure copper section 12, is in a shape of a cylindrical needle, has the total length of 15mm and the diameter of 1mm, wherein the length of the Fe50Ni50 alloy section 11 accounts for 80% of the total length of the matrix 1, and the Fe50Ni50 alloy section 11 and the pure copper section 12 are connected through a welding process. Around the base 1 is wound an electromagnetic coil 3, and the length of the Fe50Ni50 alloy segment 11 is equal to and aligned with the height of the electromagnetic coil 3.
The preparation process of the sectional type electromagnetic heating assembly in the embodiment comprises the following steps: machining a Fe50Ni50 alloy and a pure copper rod to obtain bars with the diameter of 1.2mm and the lengths of 12.50mm and 3.50mm respectively, then carrying out ultrasonic cleaning and connection through vacuum brazing, grinding the surface to obtain the bars with the diameter of 1.0mm after welding, then polishing the end face of the Fe50Ni50 alloy to be needle-point-shaped, and finally carrying out aluminum oxide coating through a chemical vapor deposition process. When the magnetic shielding material is heated by the electromagnetic heating, the Fe50Ni50 section rapidly generates heat and heats the tobacco, and meanwhile, the heat is conducted to the pure copper end and heats the tobacco of the magnetic shielding material section. The heating assembly can smoke in 7 seconds and has high heat utilization efficiency. The electromagnetic heating assembly was prepared into a product with a maximum case temperature of 49.8 ℃ at the same temperature setting (350 ℃) and duty cycle (5 minutes).
Example 2
As shown in fig. 2, the segmented electromagnetic heating assembly provided by the present embodiment includes a substrate 1 and a silicon oxide coating 201 attached to a surface of the substrate 1, wherein the thickness of the silicon oxide coating 201 is 1 μm; the matrix 1 is formed by combining three sections of a Fe50Ni50 alloy section 11, a Fe64Ni36 alloy section 102 and a pure copper section 13, the shape is a square needle shape, the total length is 30mm, wherein the total length of the Fe50Ni50 alloy section 11 and the Fe64Ni36 alloy section 102 accounts for 30% of the total length of the matrix 1, the side length is 2mm, the Fe50Ni50 alloy section 11 and the Fe64Ni36 alloy section 102 are connected through a welding process, and then the Fe50Ni50 alloy section and the pure copper section 13 are connected through a bonding process. Around the base 1 is wound the electromagnetic coil 3, and the total length of the sections 11 and 102 of Fe50Ni50 alloy and Fe64Ni36 alloy is equal to and aligned with the height of the electromagnetic coil 3.
The preparation process of the sectional type electromagnetic heating assembly in the embodiment comprises the following steps: firstly, machining a Fe50Ni50 alloy, a Fe64Ni36 alloy and a pure copper rod to a square bar material with the side length of 2.2mm and the lengths of 6mm, 3mm and 21mm respectively, then ultrasonically cleaning, connecting the Fe50Ni50 alloy and the Fe64Ni36 alloy through vacuum brazing, then bonding the end of Fe64Ni36 with the copper rod, grinding the surface to the square bar with the side length of 2mm, polishing the end face of the Fe50Ni50 alloy to be needle point-shaped, and finally carrying out silicon oxide coating through a chemical vapor deposition process. When the magnetic shield material is heated by the electromagnetic heating, the Fe50Ni50 and Fe64Ni36 segments quickly generate heat and heat the tobacco, and because the Fe50Ni50 has the highest magnetic conductivity, the heat is conducted to the Fe64Ni36 and the pure copper end to heat the tobacco of the magnetic shield material segments. The heating assembly can smoke in 8 seconds and has high heat utilization efficiency. The electromagnetic heating assembly was prepared into a product with a maximum enclosure temperature of 46.9 ℃ at the same temperature setting (350 ℃) and duty cycle (5 minutes).
Example 3
As shown in fig. 3, the segmented electromagnetic heating assembly provided by the present embodiment comprises a substrate 1 and a zirconia coating 202 attached to the surface of the substrate 1, wherein the thickness of the zirconia coating 202 is 50 μm; the matrix 1 is formed by combining two sections of FeCo alloy sections 101 and aluminum sections 103, the shape is conical, the total length is 18mm, wherein the length of the FeCo alloy sections 101 accounts for 50% of the total length of the matrix 1, the diameter of the bottom surface is 2.2mm, the taper is 5 degrees, and the FeCo alloy sections 101 and the aluminum sections 103 are in threaded connection. Around the base body 1 is wound an electromagnetic coil 3, and the length of the FeCo alloy segment 101 is equal to and aligned with the height of the electromagnetic coil 3.
The preparation process of the sectional type electromagnetic heating assembly in the embodiment comprises the following steps: machining a FeCo alloy and an aluminum bar to a threaded bar with the diameter of 2.4mm and the length of 9mm, then ultrasonically cleaning the bar and the aluminum bar, connecting the bar and the aluminum bar through threads, grinding the surface of the bar until the bottom surface of the bar is 2.2mm in diameter and 5 degrees in taper, then polishing the end face of the FeCo alloy to be in a smooth needle point shape, and finally performing zirconium oxide coating through a chemical vapor deposition process. During electromagnetic heating, the FeCo alloy section rapidly generates heat and heats the tobacco, and simultaneously, the heat is conducted to the aluminum section and heats the tobacco of the magnetic shielding material section. The heating assembly can smoke in 10 seconds and has high heat utilization efficiency. The electromagnetic heating assembly was prepared into a product with a maximum case temperature of 45.6 ℃ at the same temperature setting (350 ℃) and duty cycle (5 minutes).
Example 4
The segmented electromagnetic heating assembly provided by the embodiment comprises a base body and an aluminum oxide coating attached to the surface of the base body, wherein the thickness of the aluminum oxide coating is 60 micrometers; the base body is formed by combining a FeCr alloy section and a pure copper section, the base body is in a shape of a cylinder needle, the total length is 25mm, the diameter is 2mm, the length of the FeCr alloy section accounts for 60% of the total length of the base body, and the FeCr alloy and the copper are connected through a welding process. An electromagnetic coil is surrounded around the base body, and the length of the FeCr alloy section is equal to and aligned with the height of the electromagnetic coil.
The preparation process of the sectional type electromagnetic heating assembly in the embodiment comprises the following steps: machining a FeCr alloy and a pure copper rod to obtain bars with the diameter of 2.2mm and the lengths of 15mm and 10mm respectively, then ultrasonically cleaning the bars, connecting the bars through vacuum brazing, grinding the surface of the bars to obtain the bars with the diameter of 2.0mm after welding, then polishing the end face of the FeCr alloy to be needle-point-shaped, and finally performing aluminum oxide coating through a chemical vapor deposition process. During electromagnetic heating, the FeCr alloy section rapidly generates heat and heats the tobacco, and meanwhile, the heat is conducted to the copper section and heats the tobacco of the magnetic shielding material section. The heating assembly can smoke in 8 seconds and has high heat utilization efficiency. The electromagnetic heating assembly was prepared into a product with a maximum enclosure temperature of 46.3 ℃ at the same temperature setting (350 ℃) and duty cycle (5 minutes).
Comparative example 1
A base body having the same size and shape as those of example 1 was prepared in the same manner as in example 1, except that the entire base body was made of a Fe50Ni50 alloy segment, and fuming effect was achieved at the same magnetic field strength for 10 seconds. The electromagnetic heating assembly was prepared into a product with a maximum enclosure temperature of 54.7 c at the same temperature setting (350 c) and duty cycle (5 minutes).
Through the embodiment 1 and the comparative example 1, the heating component prepared by the invention has the advantages of high smoking speed and low shell temperature after being made into an appliance product, and the sectional type electromagnetic heating component is superior to the integral type electromagnetic heating component;
from the results of the embodiments 1 to 4, it is found that the sectional type electromagnetic heating assembly provided by the invention can smoke within 10 seconds, the smoking speed is high, and the temperature of the shell is low after the sectional type electromagnetic heating assembly is made into an appliance product;
in summary, the sectional type electromagnetic heating assembly prepared by the embodiment of the invention conducts the excessive heat of the high magnetic conductivity section to the low magnetic conductivity section and the magnetic shielding material section, so as to avoid heat loss, thereby improving the heat utilization efficiency.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that all changes, equivalents and modifications that come within the spirit and scope of the invention are desired to be protected.
Claims (10)
1. A segmented electromagnetic heating assembly, comprising a substrate to effect heating;
the substrate comprises a magnetic material section for generating electromagnetic heating and a magnetic shielding material section which does not generate electromagnetic heating and conducts heat generated by the magnetic material section; the magnetic material section accounts for 30-95% of the length of the base body.
2. A segmented electromagnetic heating assembly as claimed in claim 1, wherein the magnetic material segment is a segment of high permeability material.
3. A segmented electromagnetic heating assembly as claimed in claim 1, wherein the sections of magnetic material are sections of different permeability material.
4. A segmented electromagnetic heating assembly as claimed in claim 3, wherein said magnetically permeable material is one or more of Fe-based, Cr-based, Co-based or Ni-based alloys.
5. A segmented electromagnetic heating assembly as claimed in claim 1, wherein the magnetic shielding material is one or more of copper, aluminium, silver, iron or ferrite.
6. A segmented electromagnetic heating assembly as claimed in claim 1, wherein the overall shape of the base is one of conical, sheet, needle, cylindrical, prismatic, polygonal.
7. A segmented electromagnetic heating assembly according to claim 1, wherein said base is 15-30 mm long and 1.0-4.0 mm in diameter.
8. A segmented electromagnetic heating assembly as claimed in claim 1, further comprising an oxidation resistant coating adhered to the surface of the substrate.
9. A segmented electromagnetic heating assembly according to claim 8, wherein the oxidation resistant coating is one or more of alumina, zirconia and silica, and has a thickness of 1-100 μm.
10. A segmented electromagnetic heating assembly as claimed in claim 1, wherein the sections of magnetic material and magnetic shielding material are joined by welding, threading or bayonet fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747899.3A CN113424997A (en) | 2021-07-02 | 2021-07-02 | Sectional type electromagnetic heating assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747899.3A CN113424997A (en) | 2021-07-02 | 2021-07-02 | Sectional type electromagnetic heating assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113424997A true CN113424997A (en) | 2021-09-24 |
Family
ID=77758642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110747899.3A Pending CN113424997A (en) | 2021-07-02 | 2021-07-02 | Sectional type electromagnetic heating assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113424997A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207040894U (en) * | 2017-06-28 | 2018-02-27 | 深圳市合元科技有限公司 | Section heating type electronic smoking set |
| CN207444281U (en) * | 2017-10-27 | 2018-06-05 | 深圳市合元科技有限公司 | A kind of heating unit and low temperature bake smoking set |
| CN108495386A (en) * | 2018-04-13 | 2018-09-04 | 湖北中烟工业有限责任公司 | A kind of heater for electrical heating cigarette |
| CN110074457A (en) * | 2019-04-30 | 2019-08-02 | 安徽中烟工业有限责任公司 | A kind of magnetic grain soaking smoking set being able to achieve Segmented heating |
-
2021
- 2021-07-02 CN CN202110747899.3A patent/CN113424997A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207040894U (en) * | 2017-06-28 | 2018-02-27 | 深圳市合元科技有限公司 | Section heating type electronic smoking set |
| CN207444281U (en) * | 2017-10-27 | 2018-06-05 | 深圳市合元科技有限公司 | A kind of heating unit and low temperature bake smoking set |
| CN108495386A (en) * | 2018-04-13 | 2018-09-04 | 湖北中烟工业有限责任公司 | A kind of heater for electrical heating cigarette |
| CN110074457A (en) * | 2019-04-30 | 2019-08-02 | 安徽中烟工业有限责任公司 | A kind of magnetic grain soaking smoking set being able to achieve Segmented heating |
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Application publication date: 20210924 |