CN112021679B - Smoke generating device for induction heating at front end of cigarette holder - Google Patents
Smoke generating device for induction heating at front end of cigarette holder Download PDFInfo
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- CN112021679B CN112021679B CN202011044400.4A CN202011044400A CN112021679B CN 112021679 B CN112021679 B CN 112021679B CN 202011044400 A CN202011044400 A CN 202011044400A CN 112021679 B CN112021679 B CN 112021679B
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- heating
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- heating element
- cavity
- soaking
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 220
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 74
- 230000006698 induction Effects 0.000 title claims abstract description 62
- 239000000779 smoke Substances 0.000 title claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 39
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000002791 soaking Methods 0.000 claims description 51
- 238000009413 insulation Methods 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 5
- 230000000391 smoking effect Effects 0.000 abstract description 13
- 238000005485 electric heating Methods 0.000 abstract description 11
- 239000003610 charcoal Substances 0.000 abstract description 3
- 241000208125 Nicotiana Species 0.000 description 29
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 29
- 239000010410 layer Substances 0.000 description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000003302 ferromagnetic material Substances 0.000 description 7
- 230000005291 magnetic effect Effects 0.000 description 6
- 229910052755 nonmetal Inorganic materials 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 239000002344 surface layer Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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
- A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
Landscapes
- General Induction Heating (AREA)
Abstract
The invention belongs to the field of novel cigarette smoking tools, and particularly relates to a smoke generating device for induction heating at the front end of a cigarette. The smoke generating device comprises: a hollow heating cup (2), a heating body (5) and an induction coil (4); the hollow heating cup (2) comprises an upper hollow structure, a lower hollow structure and a baffle plate between the upper hollow structure and the lower hollow structure, wherein a heating element (5) is arranged in the lower hollow structure, and an induction coil (4) is arranged at the periphery of the heating element; the heating element (5) is made of ferromagnetic metal and has a structure capable of penetrating air. The invention designs a smoke generating device for induction heating at the front end of a cigarette for the first time, and a plurality of airflow channels are formed in and/or on the surface of the heating element, so that air flowing on the surface of the heating element can be rapidly and fully heated, and the problems that the prior electric heating cigarette is uneven in heating, the charcoal heating cigarette is easy to bake and burn, difficult to control, the aroma components are insufficient and the smoking feeling is poor are effectively solved.
Description
Technical Field
The invention belongs to the field of novel cigarette smoking tools, and particularly relates to a smoke generating device for induction heating at the front end of a cigarette.
Background
Along with the improvement of health consciousness of people, the heated non-combustible cigarettes are popular with smokers because the harm of the heated non-combustible cigarettes is smaller than that of the traditional burning cigarettes. At present, the heating modes for heating the non-combustible cigarettes comprise: contact electric heating, non-contact electric heating, charcoal heating, etc.
The contact type electric heating refers to the direct contact type heating of cigarettes to obtain smoke, various heating devices such as a tube, a needle or a plate which are electrified and heated are used for directly contacting with the cigarettes or tobacco shreds, and the cigarettes or the tobacco shreds are directly contacted and baked at the temperature lower than the ignition point of the cigarettes, so that aroma components and fuming components of the tobacco are volatilized, and the smoking requirement of a smoker on the tobacco is met.
The method for heating cigarettes or cut tobacco has the following problems:
1. The tobacco shred directly contacted with the cigarette or the tobacco shred can be fully baked, but the tobacco shred at a position which is far away from the heating element cannot be fully baked, and the baking effect has certain non-uniformity on the circumferential cross section of the cigarette;
2. The heating appliance has smaller volume and low self heat capacity. The smoker is required to have a certain heating wait time before smoking. Because the heating element is in direct contact with the tobacco shred, in order to ensure the heating effect of the tobacco part far away from the heating element, the surface temperature of the heating element is generally increased by 10-20 degrees compared with the optimal heating temperature, so as to ensure the sufficiency of heating. But at the same time the problems are: after the tobacco contacted with the heating element is heated for a plurality of times, the baked tobacco substances are stuck on the heating element, and peculiar smell or heating difficulty is brought to the subsequent smoking of the cigarettes.
The prior carbon-heated cigarette is characterized in that after the carbon rod attached to the front end of tobacco is used for ignition, air flowing through the carbon rod is rapidly heated. When the hot air continuously flows through the tobacco shred parts at the cigarette ends under the action of the suction negative pressure of a smoker, the tobacco shreds are baked and heated so as to realize non-combustion heating of the tobacco shred parts. Therefore, the heating mode can obtain the tobacco aroma, and harmful substances such as tar, nicotine and the like which are generated in large quantity due to ignition are avoided. The carbon-heated cigarette has the characteristics of lower harm than the prior common cigarette, but the carbon rod is added at the front end of the cigarette, so that the difficulty in manufacturing the cigarette is increased, the production efficiency is influenced, and the defects that the time required for igniting the carbon rod is long, the ignition is difficult, the carbon rod is burnt possibly to have a certain peculiar smell and the like exist. Also, the carbon rod is difficult to control after ignition, and baking of the cut tobacco part also exists when no smoke is drawn. And the end of the carbon rod is also in direct contact with or relatively close to the tobacco shred, there is a problem in that: the end of the burning carbon rod also has the phenomenon of directly baking or even critically baking a small amount of residual tobacco shreds.
The existing non-contact type electric heating method is to utilize a smoking set for electrically heating input air, and adopts a mode of directly electrifying and heating an annular metal heating body, a flat metal heating body or a combined flat metal heating body, and then introducing the heated air on the surface of the heating body into a cigarette for 'baking' -type omnibearing three-dimensional heating.
However, the above-mentioned non-contact electric heating method has the following problems:
1. the adjacent surfaces of the heating element are insulated from each other due to the electrifying relation and have enough space to prevent short circuit, so that the problem that only the air flowing through the surface layer of the heating element can be sufficiently heated exists;
2. Inconvenient temperature measurement and control of the heating element: because the temperature sensor cannot be directly arranged on the heating element, and the air flow passage is inconvenient to install and lead, the problems of overlarge relative temperature difference between air flow and static room during suction and non-suction and difficult control and determination exist.
The present invention has been made to solve the above-described problems.
Disclosure of Invention
The invention provides a smoke generating device for induction heating at the front end of a cigarette holder, which comprises:
a hollow heating cup 2, a ferromagnetic heating body 5 and an induction coil 4;
the hollow heating cup 2 comprises an upper hollow structure a, a lower hollow structure b and a baffle plate between the upper hollow structure a and the lower hollow structure b, wherein the upper hollow structure a comprises a cigarette accommodating cavity 13, the lower hollow structure b comprises a heating element accommodating cavity, and a heat collecting hole 21 which is communicated with the cigarette accommodating cavity 13 and the heating element accommodating cavity is formed in the baffle plate;
The heating element 5 has a structure capable of penetrating air, and the heating element 5 is arranged in a heating element accommodating cavity of the hollow heating cup 2;
the induction coil 4 is enclosed on the outer wall of the heating element accommodating cavity of the hollow heating cup 2 and is connected with a power supply.
The heating element 5 is made of ferromagnetic metal. The ferromagnetic metal is selected from iron, cobalt and nickel.
The heating element 5 has an air-permeable structure meaning: the heat generating body 5 has/forms a plurality of air flow passages inside and/or on the surface.
Preferably, the hollow heating cup 2 is of a one-piece structure or of a split structure; namely, the upper hollow structure a, the lower hollow structure b and the baffle plate between the upper hollow structure a and the lower hollow structure b are of an integrated structure or of a split structure. The upper hollow structure a, the lower hollow structure b and the baffle can be divided into two split-type connected structures.
Preferably, the upper part of the hollow heating cup 2 is a hollow tubular structure a, the lower part is a hollow tubular structure b14 with a top plate, the top plate is used as the baffle, and the upper part and the lower part of the hollow heating cup 2 are detachably connected, preferably clamped;
more preferably, the upper hollow tubular structure is made of metal, so that heat conduction and processing are facilitated, and the lower hollow tubular structure 14 with a top plate is made of nonmetal, so that magnetic conduction is facilitated.
Preferably, the heating element 5 comprises ferromagnetic bundled metal fiber wires or porous and foamed solid ferromagnetic metal blocks.
Wherein, ferromagnetic bundling metal fiber wire means: a metal fiber tow consisting of a plurality of fibers (with a filament diameter of 0.5-0.001 mm) of ferromagnetic material bundled together according to any rule. Because of the fine gas flow passages between adjacent metal fiber filaments in the metal fiber tows, it is possible to ensure sufficient flow of gas between the metal fiber filaments. The plurality of fibers which are bundled form the heating body 5, the specific surface area of the heating body is large, and when the heating body is heated by the efficient induction coil 4, the air sucked from the outside and flowing through the surface of the heating body can quickly and fully exchange the heat of each fiber in the heating body 5 to the flowing air.
The porous foamed ferromagnetic metal block means: the metal aggregate is foamed to produce metal blocks with porous honeycomb structures. For example: foam metal blocks, and the like. The porous and foaming solid ferromagnetic metal block has large specific surface area, and the airflow channels are numerous, and the air heating effect is similar to that of the bunched metal fiber wires.
Preferably, the heating element accommodating chamber communicates with the outside air.
Preferably, when the upper hollow structure a and the lower hollow structure b of the hollow heating cup 2 and the baffle plate therebetween are in an integrated structure, the hollow heating cup 2 is made of a non-metal material; more preferably, the hollow heating cup 2 is made of high temperature resistant, nontoxic, nonmetallic materials such as glass ceramics and ceramics through precision machining or mould pressing technology.
Preferably, the heating element 5 is arranged in the heating element accommodating cavity, and the heat insulation ring 10 abuts against the lower end part of the heating element 5 to limit the heating element.
Preferably, the cigarette accommodating chamber 13 and the heating element accommodating chamber are cylindrical.
Preferably, the bundling metal fiber wires are bundled together in a manner that the metal fiber wires are arranged in parallel with the axis of the heating element accommodating cavity.
Preferably, the smoke generating device further comprises: a shielding ring 6 disposed at the periphery of the induction coil 4.
The shielding ring 6 is used for electromagnetic shielding of the induction coil 4 operating in the middle and high frequency ranges, and is made of nonferromagnetic and easily processed aluminum, copper, aluminum or copper alloy, etc. The shielding ring 6 is sleeved on the outer side of the induction coil 4 in a circular ring shape or is coiled on the outer side of the induction coil 4 by a thin metal sheet, so that the induction magnetic field generated by the induction coil 4 after being electrified can not generate electromagnetic interference or induction heating phenomena on ferromagnetic materials or other equipment at the periphery of the smoke generating device, and therefore the changing magnetic field generated by the induction coil 4 can be mostly concentrated to act on the ferromagnetic heating body 5 to generate eddy current so as to generate heat. The inner wall of the shielding ring 6 is required to be at least 0.5mm away from the outermost circle of the induction coil 4, the length of the shielding ring 6 is required to be larger than the axial total length of the induction coil 4, and the two ends of the shielding ring 6 are at least 5mm or more than the length of the induction coil 4.
Preferably, the smoke generating device further comprises: two layers of heat insulation and insulation isolation layers 7, wherein one layer of insulation isolation layer 7 wraps the outer wall of the heating element accommodating cavity of the hollow heating cup 2 surrounded by the induction coil 4, the other layer of insulation isolation layer 7 wraps the outer part of the induction coil 4, and the induction coil 4 is arranged between the two layers of insulation isolation layers 7. Thus, the electromagnetic performance of the induction coil 4 during operation can be ensured, and the induction coil 4 can be positioned on the outer wall of the heating element accommodating cavity of the hollow heating cup 2.
The insulating isolation layer 7 is a high-temperature resistant, insulating and heat-insulating high Wen Jiaobu, glass fiber or heat-shrinkable polymer material wrapping layer. High temperature resistance means: at 250 degrees celsius, no deformation occurs at one atmosphere.
Preferably, a hollow soaking device 3 is arranged inside the upper hollow structure a of the hollow heating cup 2 and is provided with a top plate, a plurality of soaking holes 31 are formed in the top plate, the hollow structure inside the hollow soaking device 3 is a soaking cavity 32, the hollow soaking device 3 is arranged at the lower part of the cigarette accommodating cavity 13, the soaking cavity 32 is communicated with the cigarette accommodating cavity 13 through the soaking holes 31, and the soaking cavity 32 is communicated with the heating element accommodating cavity through the heat collecting holes 21.
The soaking device 3 is a hollow cylinder, the lower end is open, and the upper end is provided with a top plate. The soaking device 3 is placed in the upper hollow structure a of the hollow heating cup 2 by interference fit, and is made of thin-wall nonferrous aluminum or copper and other materials, and the outer cylindrical surface of the soaking device is in transition fit with the inner wall of the cigarette accommodating cavity 13 at the upper part of the heating cavity. The hollow heating cup 2 is made of a nonmetallic material, and the expansion amount after heating is smaller than that of the metal soaking device 3, so long as the soaking device 3 does not naturally slide in the upper hollow structure a of the hollow heating cup 2 at normal temperature. (if the two motionless parts are in interference fit according to common knowledge, the expansion of the internal soaking device 3 is larger than that of the hollow heating cup 2, and the hollow heating cup 2 is a nonmetallic thin-wall part, so that stress concentration at the joint of the hollow heating cup 2 and the soaking device 3 is likely to damage.)
Preferably, the smoke generating device further comprises: a temperature sensor 8 provided at an end of the heating element 5, embedded in the heating element 5 by punching the end of the heating element 5, for detecting the temperature of the heating element 5.
Preferably, the smoke generating device further comprises:
A heat insulating ring 10, a hollow base 11;
Wherein, the heat insulation ring 10 is arranged at the lower end of the heating body 5, the upper end is propped against the heating body 5, the lower end is propped against the hollow base 11, and the hollow structures inside the heat insulation ring 10 and the hollow base 11 are communicated with the outside air and the heating body accommodating cavity. The heat insulation ring 10 is matched and connected with the lower part of the hollow heating cup 2 in a threaded opening, a bayonet, a pin or a self-locking taper mode.
Preferably, the smoke generating device further comprises: a vacuum insulation tube 9 which is arranged on the periphery of the nonmetallic hollow heating cup 2 and surrounds the shielding ring 6.
Preferably, the longitudinal section of the nonmetal hollow heating cup 2 is H-shaped, and the nonmetal hollow heating cup is made of glass or ceramic.
Preferably, the shielding ring 6 is made of non-ferromagnetic material, including aluminum, copper, and alloys containing aluminum or copper.
Preferably, the soaking device 3 is made of non-ferromagnetic material, including aluminum, copper, and alloys containing aluminum or copper.
Preferably, the soaking holes 31 are uniformly distributed on the top plate of the soaking device 3 in the circumferential direction, and an axial airflow channel is formed inside the heating body 5.
The heating process of the smoke generating device is as follows:
as shown in fig. 1, a cigarette (not shown) is inserted into the cigarette accommodating chamber 13. The smoke generating device is started, the induction coil is electrified, and the heating body 5 starts to generate heat. The external air is sucked from the lower part of the hollow heating cup 2 and is rapidly and fully heated by the heating body 5 to obtain hot high-temperature gas. When high-temperature hot air is sucked into a heat-homogenizing cavity 32 with a larger diameter formed by the cylindrical inner wall of the heat-homogenizing device 3 from a heat-collecting hole 21 with a smaller diameter, the air flow speed at the front end of the heat-collecting hole 21 is high, the pressure is low, the temperature is high, and the air temperature is relatively low, the flow speed is low and the pressure is high in a region relatively far away from the heat-collecting hole 21 and relatively far away from the radial or axial position of the heat-collecting hole. When the hot high-speed air flow enters the heat homogenizing cavity 32, multi-area micro-flow is generated in the heat homogenizing cavity 32 under the action of pressure difference, heat and pressure difference are homogenized, the pressure and temperature of the air reaching the heat homogenizing holes 31 are homogenized, the temperature is slightly reduced, the high-temperature air is sucked into the cigarettes inserted into the cigarette accommodating cavity 13 after being subjected to negative pressure transmitted by a smoker to smoke, and the homogenized high-temperature air toasts and heats tobacco parts in the cigarettes. In addition, the soaking holes 31 are uniformly distributed on the circumference of the top plate of the soaking device 3, so that the tobacco baking is more uniform and more sufficient compared with that of the direct contact heater.
At the same time, during the heat exchange and pressure difference homogenization inside the soaking cavity 32, the input hot gas heat and homogenized gas heat are also conducted to the soaking device 3 and finally to the upper part of the hollow heating cup 2. Another partial source of heat on the hollow heating cup 2 is: the heating element 5 is transferred to the lower part of the hollow heating cup 2 through radiation and air conduction after being inductively heated in the heating element accommodating cavity, and the lower part of the hollow heating cup 2 directly conducts heat to the upper part of the hollow heating cup 2. This part of the heat conducted to the upper part of the hollow heating cup 2 will also bake and heat the cigarettes inserted into the cigarette accommodating chamber 13. Therefore, the hollow heating cup 2 of the invention achieves the aim of fully utilizing heat.
Therefore, the cigarettes inserted into the cigarette accommodating chamber 13 are heated not only by the uniform high-temperature hot air flow from the plurality of heat equalizing holes 31, but also by uniform baking and heating of the upper heat from the hollow heating cup 2 on the outer circumference of the cigarette accommodating chamber 13, thereby uniformly and sufficiently baking and heating the tobacco parts of the cigarettes, and the advantages of circumferential heating, sheet-type or needle-type central heating compared with direct contact heating are exhibited. When the cigarettes are smoked, the problems that tobacco materials heated in the center are adhered, tobacco segments stay in the smoking set and the like are avoided, so that the process of taking out the cigarettes from the smoking set is simplified, and a structure special for taking out the cigarettes is avoided.
The technical proposal can be freely combined on the premise of no contradiction.
The invention has the following beneficial effects:
1. The invention designs an electric heating smoke generating device for carrying out instantaneous induction heating on inhaled and passed air for the first time, the heating principle is induction heating, and a plurality of airflow channels are arranged in and/or on the surface of a heating element, so that the air flowing on the surface and the inside of the heating element can be rapidly and fully heated, and the problems that the electric heating cigarette is not uniformly heated, the charcoal heating cigarette is easy to burn, difficult to control, insufficient in aroma components and poor in smoking feel in the prior art are effectively solved.
2. In the preferable technical scheme, the heating element is a ferromagnetic bundling metal fiber wire with large specific surface area or a ferromagnetic porous and foaming solid ferromagnetic metal block. Compared with the annular, flat or combined flat metal heating element, the heating element provided by the invention has a plurality of tiny air flow channels, has higher air flow dispersibility, and can rapidly and fully heat air flowing on the surface and inside.
2. In the preferred technical scheme, the heat equalizer 3 is arranged between the heating element 5 and the cigarette accommodating cavity 13 for the first time, under the action of pressure difference, the heat equalizing cavity 32 in the heat equalizer generates multi-area micro-flow homogenizing heat and pressure difference, the multi-area micro-flow homogenizing heat and pressure difference are generated in the heat equalizing cavity 32, after the heat equalizing cavity 31 receives negative pressure generated by suction, the gas which is relatively homogenized and simultaneously obtains a certain temperature drop is sucked into the cigarettes inserted into the cigarette accommodating cavity 13, and the tobacco parts in the cigarettes are baked and heated by the homogenized high-temperature gas.
3. In a more preferable embodiment, the uniform distribution of the heat uniformity holes 31 is formed on the circumference of the top plate of the soaking device 3, and the dispersion degree of the high-temperature gas is high. Compared with the existing contact type electric heating, non-contact type electric heating and carbon heating methods, the smoke generating device disclosed by the invention has the advantages that the tobacco is baked more uniformly and more fully, and the problems of adhesion of baked tobacco materials, tobacco segment retention smoking set and the like caused by contact type electric heating are avoided.
4. In addition, the hollow heating cup 2 of the present invention accommodates a cigarette at the upper part and a heating element at the lower part. The heating body mainly provides an air heating mode, and simultaneously, the rest heat is transferred to the lower part of the hollow heating cup 2 in a radiation and air conduction mode, and then is directly thermally conducted to the upper part of the hollow heating cup 2 from the lower part of the hollow heating cup 2, so that the cigarette holder is baked. Therefore, the hollow heating cup 2 of the invention achieves the aim of fully utilizing heat.
Drawings
Fig. 1 is a longitudinal sectional view of a smoke generating device of example 1 induction heated at the front end of a cigarette, and a partially enlarged view on the right.
Fig. 2 is a schematic perspective view of the parts of the hollow heat spreader 3 of the smoke generating device of example 1.
Fig. 3 is a longitudinal cross-sectional view of a smoke generating device of example 2 induction heated at the front end of a cigarette, with an enlarged view on the right.
List of reference numerals:
1. Jack seat, 2, cavity heating cup, 21, heat collecting hole, 3, soaking device, 31, soaking hole, 32, soaking cavity, 4, induction coil, 5, heat-generating body, 6, shielding ring, 7, isolation layer, 8, temperature sensor, 9, vacuum insulating tube, 10, heat-insulating ring, 11, cavity base, 12, coil lead, 13, cigarette hold the chamber, 14, have the hollow tubular structure b of integral type roof, 141, roof through-hole.
Detailed Description
The following further describes the invention in terms of specific embodiments.
Example 1
1-2, Embodiment 1 provides a smoke generating device for induction heating at the front end of a cigarette, the smoke generating device comprising:
the device comprises a jack seat 1, a nonmetallic hollow heating cup 2, a hollow soaking device 3, an induction coil 4, a heating body 5, a shielding ring 6, a heat insulation, insulating isolation layer 7, a temperature sensor 8, a vacuum heat preservation pipe 9, a heat insulation ring 10 and a hollow base 11;
The longitudinal section of the hollow heating cup 2 is H-shaped, and the hollow heating cup is made of high-temperature resistant and nontoxic nonmetallic materials such as microcrystalline glass and ceramic with high processing precision. The hollow heating cup 2 is of an integrated structure and comprises an upper hollow structure a, a lower hollow structure b and a baffle plate between the upper hollow structure a and the lower hollow structure b, wherein the upper hollow structure a comprises a cigarette accommodating cavity 13, the lower hollow structure b comprises a heating element accommodating cavity, and a heat collecting hole 21 which is communicated with the cigarette accommodating cavity 13 and the heating element accommodating cavity is formed in the baffle plate;
the heating element 5 comprises ferromagnetic bunched metal fiber wires or porous and foaming solid ferromagnetic metal blocks, the heating element 5 is arranged in a heating element accommodating cavity of the hollow heating cup 2, the heating element accommodating cavity is communicated with the outside air, and an axial airflow channel is formed in the heating element 5;
The induction coil 4 is enclosed on the outer wall of the heating element accommodating cavity of the hollow heating cup 2 and is connected with a power supply through the coil lead 12. The induction coil 4 is manually controlled when being initially started, and in the whole process of smoking, the smoke generating device automatically adjusts the electric parameters of the induction coil 4 in time according to the temperature detected by the temperature sensor 8 so as to meet the heat required by smoking of cigarettes.
The ferromagnetic bundle metal fiber filament of this embodiment 1 refers to: and a metal fiber tow formed by bundling multiple fibers (with the diameter of a monofilament being 0.5-0.001 mm) made of ferromagnetic materials in a mode that metal fiber wires are arranged in parallel with the axis of the heating element accommodating cavity. The porous and foaming solid ferromagnetic metal block has large specific surface area, and the airflow channels are numerous, and the air heating effect is similar to that of the bunched metal fiber wires.
The heating element 5 is arranged in the heating element accommodating cavity and is limited and fixed by the heat insulation ring 10 at the lower end.
The cigarette accommodating cavity 13 and the heating element accommodating cavity are cylinders.
The shielding ring 6 is made of non-ferromagnetic material, including aluminum, copper, and alloys containing aluminum or copper, and is disposed at the periphery of the induction coil 4. The shielding ring 6 is used for electromagnetic shielding of the induction coil 4 operating in the middle and high frequency ranges, and is made of nonferromagnetic and easily processed aluminum, copper, aluminum or copper alloy, etc. The shielding ring 6 is sleeved on the outer side of the induction coil 4 in a circular ring shape or is coiled on the outer side of the induction coil 4 by a thin metal sheet, so that the induction magnetic field generated by the induction coil 4 after being electrified can not generate electromagnetic interference or induction heating phenomena on ferromagnetic materials or other equipment at the periphery of the smoke generating device, and therefore the changing magnetic field generated by the induction coil 4 can be mostly concentrated to act on the ferromagnetic heating body 5 to generate eddy current so as to generate heat. The inner wall of the shielding ring 6 is required to be at least 0.5mm away from the outermost circle of the induction coil 4, the length of the shielding ring 6 is required to be larger than the axial total length of the induction coil 4, and the two ends of the shielding ring 6 are at least 5mm or more than the length of the induction coil 4.
The smoke generating device comprises two layers of heat insulation and insulation isolation layers 7, wherein one layer of insulation isolation layer 7 wraps the outer wall of the heating body accommodating cavity of the hollow heating cup 2 surrounded by the induction coil 4, the other layer of insulation isolation layer 7 wraps the outer part of the induction coil 4, and the induction coil 4 is arranged between the two layers of insulation isolation layers 7, namely, one layer of insulation isolation layer 7 needs to be wrapped before and after the induction coil 4 is wound on the outer wall of the heating cavity 2. Thus, the electromagnetic performance of the induction coil 4 during operation can be ensured, and the induction coil 4 can be positioned on the outer wall of the heating element accommodating cavity of the hollow heating cup 2. The insulating isolation layer 7 is a high-temperature resistant, insulating and heat-insulating high Wen Jiaobu, glass fiber or heat-shrinkable polymer material wrapping layer.
The inside cavity soaking ware 3 that is provided with of upper portion hollow structure a of cavity heating cup 2, it has the roof, set up a plurality of soaking hole 31 that are circumference evenly distributed on the roof, the inside hollow structure of cavity soaking ware 3 is soaking cavity 32, cavity soaking ware 3 sets up the lower part that the chamber 13 was held to the cigarette, soaking cavity 32 passes through soaking hole 31 with the chamber 13 intercommunication is held to the cigarette, soaking cavity 32 passes through heat collecting hole 21 with the heat-generating body holds the chamber intercommunication. The diameter of the soaking holes 31 is 0.3-1mm.
The soaking device 3 is a hollow cylinder, the lower end is open, and the upper end is provided with a top plate. The soaking device 3 is placed in the upper hollow structure a of the hollow heating cup 2 by interference fit, and is made of thin-wall nonferrous aluminum or copper and other materials, and the outer cylindrical surface of the soaking device is in transition fit with the inner wall of the cigarette accommodating cavity 13 at the upper part of the heating cavity. The hollow heating cup 2 is made of a nonmetallic material, and the expansion amount after heating is smaller than that of the metal soaking device 3, so long as the soaking device 3 does not naturally slide in the upper hollow structure a of the hollow heating cup 2 at normal temperature.
The temperature sensor 8 is provided at the lower end of the heating element 5, and is embedded in the heating element 5 by punching the lower end of the heating element 5 to detect the temperature of the heating element 5.
The heat insulation ring 10 is arranged at the lower end of the heating body 5, the upper end of the heat insulation ring abuts against the heating body 5, the lower end of the heat insulation ring abuts against the hollow base 11, and the hollow structures inside the heat insulation ring 10 and the hollow base 11 are communicated with outside air and the heating body accommodating cavity. The heat insulation ring 10 is in threaded connection and matched with the inner part of the hollow structure b at the lower part of the hollow heating cup 2.
The heat-insulating ring 10 is made of high-temperature resistant ceramic or quartz glass.
The vacuum heat-insulating pipe 9 is arranged on the periphery of the hollow heating cup 2 and surrounds the shielding ring 6. The vacuum heat-insulating pipe 9 can be wrapped with heat-insulating materials or replaced by other heat-insulating materials under the condition of not affecting the appearance or use, so that the heat generated in the vacuum heat-insulating pipe 9 is reduced as much as possible and is scattered to the periphery, the heat efficiency is improved, the damage to devices, circuits and the like near the heating cavity is avoided, or the bad experience of a user is increased. Of course, the use of the vacuum insulated pipe 9 is only an optimal method and is not the only method of limiting the present invention.
The jack seat 1 is arranged at the upper end of the nonmetal hollow heating cup 2, the positions of the hollow heating cup 2 and the vacuum heat preservation pipe 9 are fixed, and the jack seat 1 is provided with a central through hole for inserting cigarettes.
Example 2
As shown in fig. 3, embodiment 2 provides a smoke generating device inductively heated at the front end of a cigarette, which is different from embodiment 1 in that: the hollow heating cup 2 is of a split type structure. The hollow heating cup 2 has a hollow tubular structure at the upper part and a hollow tubular structure 14 with an integral top plate as the baffle plate, and the top plate has a top plate through hole 141 as the heat collecting hole 21 of embodiment 1. The upper part and the lower part of the hollow heating cup 2 are clamped.
The upper hollow tubular structure is made of metal, so that heat conduction and processing are facilitated, and the hollow tubular structure 14 with the top plate at the lower part is made of nonmetal, so that magnetic conduction is facilitated.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (7)
1. A smoke generating device for induction heating at a front end of a smoke holder, the smoke generating device comprising:
A hollow heating cup (2), a ferromagnetic heating body (5) and an induction coil (4);
The hollow heating cup (2) comprises an upper hollow structure a, a lower hollow structure b and a baffle plate between the upper hollow structure a and the lower hollow structure b, wherein the upper hollow structure comprises a cigarette accommodating cavity (13), the lower hollow structure comprises a heating element accommodating cavity, and a heat collecting hole (21) communicated with the cigarette accommodating cavity (13) and the heating element accommodating cavity is formed in the baffle plate;
The heating element (5) has a structure capable of penetrating air, and the heating element (5) is arranged in a heating element accommodating cavity of the hollow heating cup (2);
the induction coil (4) is enclosed on the outer wall of the heating element accommodating cavity of the hollow heating cup (2) and is connected with a power supply, and the heating element accommodating cavity is communicated with the outside air;
The upper part of the hollow heating cup (2) is of a hollow tubular structure a, the lower part of the hollow heating cup is of a hollow tubular structure b (14) with a top plate, the top plate is used as the baffle, and the upper part and the lower part of the hollow heating cup (2) are detachably connected;
The inside cavity soaking ware (3) that is provided with of upper portion hollow structure of cavity heating cup (2), it has the roof, set up a plurality of soaking hole (31) on the roof, the inside hollow structure of cavity soaking ware (3) is soaking cavity (32), cavity soaking ware (3) set up the lower part that holds chamber (13) in the cigarette, soaking cavity (32) pass through soaking hole (31) with chamber (13) intercommunication is held to the cigarette, soaking cavity (32) pass through heat collecting hole (21) with the heat-generating body holds the chamber intercommunication.
2. A smoke generating device as claimed in claim 1, further comprising: a shield ring (6) provided on the periphery of the induction coil (4);
The heating body (5) comprises ferromagnetic bundling metal fiber wires or porous and foaming solid ferromagnetic metal blocks.
3. A smoke generating device as claimed in claim 1, further comprising: two-layer heat-insulating isolation layer (7), one layer isolation layer (7) parcel are in the outer wall in cavity is held to cavity heating element of cavity heating cup (2) that induction coil (4) surrounded, another layer isolation layer (7) parcel induction coil (4) outside is between two-layer isolation layer (7) induction coil (4).
4. A smoke generating device as claimed in claim 1, further comprising: and a temperature sensor (8) embedded in the heating element (5).
5. A smoke generating device as claimed in claim 1, further comprising:
a heat insulation ring (10), a hollow base (11);
the heat insulation ring (10) is arranged at the lower end of the heating body (5), the upper end of the heat insulation ring is propped against the heating body (5) and the lower end of the heat insulation ring is propped against the hollow base (11), and the hollow structures inside the heat insulation ring (10) and the hollow base (11) are communicated with outside air and the heating body accommodating cavity.
6. A smoke generating device according to claim 1, wherein the heater (5) has an axial airflow passage therein.
7. A smoke generating device according to claim 1, wherein the soaking holes (31) are evenly distributed circumferentially on the top plate of the soaking device (3).
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| CN202011044400.4A CN112021679B (en) | 2020-09-28 | 2020-09-28 | Smoke generating device for induction heating at front end of cigarette holder |
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| CN202011044400.4A CN112021679B (en) | 2020-09-28 | 2020-09-28 | Smoke generating device for induction heating at front end of cigarette holder |
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| WO2022266808A1 (en) * | 2021-06-21 | 2022-12-29 | 深圳沃德韦科技有限公司 | Atomization device and heating assembly thereof |
| CN113331487A (en) * | 2021-07-19 | 2021-09-03 | 云南中烟工业有限责任公司 | Cigarette with ferromagnetic heating cap, electric heating suction system and use method |
| CN113662271B (en) * | 2021-08-09 | 2024-07-09 | 广东省奇思智能制造有限公司 | Heating structure of aerosol generating device and aerosol generating device |
| CN113693294A (en) * | 2021-08-30 | 2021-11-26 | 惠州市新泓威科技有限公司 | Aerosol generating device with induction heating tube |
| CN114246367A (en) * | 2021-12-20 | 2022-03-29 | 深圳市基克纳科技有限公司 | Electromagnetic induction heating aerosol forming device and application thereof |
| CN114246366A (en) * | 2021-12-20 | 2022-03-29 | 深圳市基克纳科技有限公司 | Induction heating type aerosol forming device and application thereof |
| CN114468386B (en) * | 2021-12-30 | 2024-01-05 | 深圳市基克纳科技有限公司 | Heating device and low-temperature non-combustion smoking set |
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| CN212414752U (en) * | 2020-09-28 | 2021-01-29 | 云南中烟工业有限责任公司 | Fuming device for induction heating at front end of cigarette |
| WO2021189799A1 (en) * | 2020-09-28 | 2021-09-30 | 云南中烟工业有限责任公司 | Smoking apparatus for induction heating at front end of cigarette |
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| CN207754539U (en) * | 2017-08-28 | 2018-08-24 | 深圳市合元科技有限公司 | A kind of double heating cryotronics cigarettes |
| CN111264910A (en) * | 2020-03-23 | 2020-06-12 | 惠州市沛格斯科技有限公司 | Heating module and electronic smoking set |
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| CN212414752U (en) * | 2020-09-28 | 2021-01-29 | 云南中烟工业有限责任公司 | Fuming device for induction heating at front end of cigarette |
| WO2021189799A1 (en) * | 2020-09-28 | 2021-09-30 | 云南中烟工业有限责任公司 | Smoking apparatus for induction heating at front end of cigarette |
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