CN112120287B - Low-temperature smoking set with heat insulation structure - Google Patents
Low-temperature smoking set with heat insulation structure Download PDFInfo
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- CN112120287B CN112120287B CN201910556234.7A CN201910556234A CN112120287B CN 112120287 B CN112120287 B CN 112120287B CN 201910556234 A CN201910556234 A CN 201910556234A CN 112120287 B CN112120287 B CN 112120287B
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- 230000000391 smoking effect Effects 0.000 title claims abstract description 55
- 238000009413 insulation Methods 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 111
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 54
- 239000010439 graphite Substances 0.000 claims abstract description 54
- 235000019505 tobacco product Nutrition 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 238000009833 condensation Methods 0.000 claims description 15
- 230000005494 condensation Effects 0.000 claims description 15
- 241000208125 Nicotiana Species 0.000 claims description 14
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims 2
- 239000000779 smoke Substances 0.000 description 21
- ZGHQUYZPMWMLBM-UHFFFAOYSA-N 1,2-dichloro-4-phenylbenzene Chemical compound C1=C(Cl)C(Cl)=CC=C1C1=CC=CC=C1 ZGHQUYZPMWMLBM-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect 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
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012535 impurity Substances 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
- 238000005192 partition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 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
- A24F47/00—Smokers' requisites not otherwise provided for
Landscapes
- Manufacture Of Tobacco Products (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention discloses a low-temperature smoking set with a heat insulation structure, which comprises: a housing having a heating chamber formed therein for loading and heating tobacco products; the heat insulation structure is arranged in the shell and positioned at the periphery of the heating cavity; the heat insulation structure comprises a phase change heat pipe, a heat conduction pipe and graphite sheets; the heat conducting tube is sleeved outside the heating cavity, the graphite sheet is coated on the outer wall of the heat conducting tube, and the phase-change heat tube is fixedly attached to the inner wall of the heat conducting tube. According to the invention, the heating cavity is arranged in the heat-conducting pipe, and the phase-change heat pipe is arranged in the heat-conducting pipe, so that most of heat emitted by the heating cavity is absorbed by the phase-change heat pipe by utilizing the excellent heat-conducting properties of the phase-change heat pipe and the heat-conducting pipe, and part of heat absorbed by the phase-change heat pipe is transferred to the heat-conducting pipe and then transferred to the graphite flake by the heat-conducting pipe; part of the heat is transferred to two ends of the phase-change heat pipe, so that the purpose of guiding the heat to be emitted to a set direction is achieved.
Description
Technical Field
The invention belongs to the technical field of smoking articles, and particularly relates to a low-temperature smoking set with a heat insulation structure.
Background
Compared with the traditional cigarettes, the heating non-combustion smoking device directly heats the tobacco or the nicotine products, the heating temperature is 220-250 ℃, and the smoke is gradually volatilized after baking, so that harmful smoke components generated by combustion and thermal degradation of the tobacco in the traditional cigarettes can be reduced.
The heating of non-combustible products can be formally divided into enclosure heating and center heating, and various heating techniques such as ceramic heating, film heating, electromagnetic heating and the like have been developed based on the electric heating principle. In the practical application process, as the heating temperature (220-250 ℃) of the heating body of the low-temperature smoking set is higher than the human body temperature, when in work, heat can pass through the layer-by-layer structure to reach the shell of the low-temperature smoking set, and when in use, a user can generate bad user experience due to the overhigh temperature of the side wall of the shell of the low-temperature smoking set; moreover, the excessive internal temperature of the product also affects the working stability of batteries, circuit boards, etc.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present application is to provide a low-temperature smoking article having a heat insulating structure, which can effectively prevent heat from being transferred to the side of an outer case.
In order to solve the technical problems, the application adopts the following technical scheme:
A low temperature smoking article with an insulating structure comprising:
a housing having a heating chamber formed therein for loading and heating tobacco products;
The heat insulation structure is arranged in the shell and positioned at the periphery of the heating cavity;
the heat insulation structure comprises a phase change heat pipe, a heat conduction pipe and graphite sheets;
The heat conducting tube is sleeved outside the heating cavity, the graphite sheet is coated on the outer wall of the heat conducting tube, and the phase-change heat tube is fixedly attached to the inner wall of the heat conducting tube.
Further, the phase-change heat pipe comprises an evaporation section, a convection section and a condensation section which are sequentially connected, wherein the evaporation section faces the heating cavity, and the condensation section is tightly attached to the inner wall of the heat conduction pipe.
Further, the phase-change heat pipe comprises a closed pipe body and a capillary structure layer which is closely attached to the inner wall of the pipe body, and phase-change liquid is stored in the capillary structure layer.
Furthermore, clamping grooves extending along the axial direction of the heat conducting tube are uniformly distributed on the inner wall of the heat conducting tube, and the phase-change heat tube is installed in the clamping grooves in a matching mode.
Further, the heat conducting pipe is wrapped with a plurality of layers of graphite sheets.
Further, a groove is formed in the inner side of the outer wall of the heat conduction pipe, and the graphite sheet is arranged in the groove.
Further, two ends of the heating cavity are provided with openings, one of the openings is an air inlet end, and the other opening is a tobacco product inserting end; the shell is respectively provided with an air inlet communicated with the air inlet end and a tobacco inserting port communicated with the tobacco product inserting end, and the air inlet, the heating cavity and the tobacco inserting port are sequentially communicated to form a straight-through flue.
Further, a tubular heating body is arranged in the shell, and the inner cavity of the tubular heating body forms the heating cavity.
Further, a battery assembly for supplying power to the heating element is further arranged in the shell, the battery assembly comprises a battery and a PCB, and the PCB divides the shell into a battery mounting cavity provided with the battery and a heating element mounting cavity provided with the heat insulation structure and the heating element.
Further, a dust cover capable of shielding the smoke insertion opening is further arranged on the shell.
Compared with the prior art, the invention has the beneficial effects that:
1. The heat pipe is arranged around the heating cavity, the phase-change heat pipe is arranged on the inner wall of the heat pipe, the multi-layer laminar graphite sheet is wound on the outer wall of the heat pipe, when the smoking set works to generate a large amount of heat, the phase-change heat pipe and the heat pipe absorb the heat emitted by the heating cavity, wherein one part of the heat absorbed by the phase-change heat pipe is transferred to the heat pipe, and the other part of the heat is transferred to the end part of the heat pipe and is emitted from the end part of the heat pipe; one part of heat received by the heat conducting pipe is transferred to the lamellar graphite sheet, and the other part is transferred to the end part of the lamellar graphite sheet and is emitted from the end part of the lamellar graphite sheet; the lamellar graphite sheet finally blocks the heat transferred by the heat conducting tube, and the received heat is conveyed along the extending direction of the lamellar structure of the lamellar graphite sheet, so that the heat which can penetrate the lamellar graphite sheet is greatly reduced, the heat which finally reaches the side part of the shell of the smoking set is greatly reduced, and the problem of scalding hands caused by overhigh temperature of the shell is avoided.
2. The two ends of the heating cavity are provided with openings, one of the openings is an air inlet end, the other opening is a tobacco product inserting end, the shell is respectively provided with an air inlet communicated with the air inlet end and a tobacco inserting port communicated with the tobacco product inserting end, and the air inlet, the heating cavity and the tobacco inserting port are sequentially communicated to form a straight-through flue; the heat transferred to the layered graphite sheets, the heat conducting pipes and the ends of the phase-change heat pipes is intensively transferred to the air inlet and the smoke inserting port of the low-temperature smoking set to be dispersed, so that the temperature of the side part of the shell of the whole low-temperature smoking set can be maintained in a lower range.
3. After the external air flow enters the heating cavity from the air inlet, the smoke generated by heating the tobacco product is brought into the mouth of a user from the smoke inserting mouth and is supplied for suction; in the process of sucking by a user, when external cold air flows pass through the air inlet and the smoke inserting port, a heat exchange process exists, so that heat intensively transferred to the smoke inserting port and the air inlet of the smoking set is transferred to the air flow and is quickly brought out of the smoking set, and the temperature at the end part of the smoking set can be effectively prevented from being too high; in addition, when the air current passes through the air inlet, the heat that removes from heat insulation structure tip can preheat the air current, the energy saving.
4. The battery and the PCB are isolated by the heat source through the heat insulation structure, the working temperature of the battery and the PCB is low, and the battery and the PCB are prevented from being invalid due to overhigh internal temperature of the smoking set.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic view of a heat insulation structure according to the present invention;
FIG. 5 is a schematic view of the internal layer structure and heat conduction of the graphite sheet of the present invention;
FIG. 6 is a schematic diagram of the internal heat flow of a graphite sheet in accordance with the present invention;
FIG. 7 is a schematic diagram of a phase change heat pipe according to the present invention;
FIG. 8 is a schematic diagram of the heat flow inside a phase change heat pipe according to the present invention;
FIG. 9 is a schematic diagram of the internal liquid vapor cycle of a phase change heat pipe according to the present invention;
FIG. 10 is a schematic diagram showing the heat flow and vapor-liquid circulation in a phase-change heat pipe according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 4, the low temperature smoking set with the heat insulation structure comprises a housing 1 and the heat insulation structure, wherein a heating cavity 2 for loading and heating tobacco products is formed inside the housing 1, and the heat insulation structure is arranged in the housing 1 and located at the periphery of the heating cavity 2. Specifically, the heat insulation structure comprises a phase-change heat pipe 3, a heat conduction pipe 4 and a graphite sheet 5, wherein the heat conduction pipe 4 is sleeved outside the heating cavity 2, the graphite sheet 5 is coated on the outer wall of the heat conduction pipe 4, and the phase-change heat pipe 3 is fixedly attached to the inner wall of the heat conduction pipe 4.
In practice, the tobacco product may be a cigarette or cartridge or the like, and the heating chamber 2 is constructed and arranged to removably receive the cigarette or cartridge, that is, the cigarette or cartridge may be inserted into the heating chamber 2 by a user and removed from the heating chamber 2 by the user after use. When a user performs operations such as adding or replacing cigarettes or cartridges, the user generally holds the side portion of the housing 1 to operate, so that the temperature of the side portion of the smoking set housing 1 is not too high to avoid scalding hands, and in this embodiment, a heat insulation structure with a special structure is arranged outside the heating cavity 2, so that the purpose of preventing heat from being transferred to the side portion of the smoking set housing 1 is achieved.
When the smoking set works to generate a large amount of heat, the phase-change heat pipe 3 and the heat conducting pipe 4 absorb the heat emitted by the heating cavity 2, wherein one part of the heat absorbed by the phase-change heat pipe 3 is transferred to the heat conducting pipe 4, and the other part is transferred to the end part of the heat conducting pipe and emitted from the end part; a part of the heat received by the heat conducting pipe 4 is transferred to the lamellar graphite sheet 5, and the other part is transferred to and emitted from the end part thereof; the lamellar graphite sheets 5 can finally block the heat transferred by the heat-conducting tube 4, and the received heat is conveyed along the extending direction of the lamellar structure of the lamellar graphite sheets 5, so that the heat which can penetrate the lamellar graphite sheets 5 is greatly reduced, the heat which finally reaches the side part of the smoking set shell 1 is greatly reduced, and the problem of scalding hands caused by overhigh temperature of the side part of the shell 1 is avoided.
The heat insulation principle of the heat insulation structure of the present application will be described in detail as follows:
as shown in fig. 3, in the housing 1, the heating chamber 2 is disposed in the heat conduction pipe 4, and the heat conduction pipe 4 and the heating chamber 2 are kept coaxially disposed, both ends of the heat conduction pipe 4 and both ends of the heating chamber 2 are fixed to the housing 1, and the heat conduction pipe 4 may be made of a material having a high heat conductivity such as an aluminum alloy or a copper alloy. The phase-change heat pipes 3 are arranged on the heat conducting pipe 4, the phase-change heat pipes 3 are uniformly distributed on the inner wall of the heat conducting pipe 4, the layered graphite sheets 5 are arranged on the outer wall of the heat conducting pipe 4, the phase-change heat pipes 3 absorb heat emitted by the heating cavity 2 and transfer the heat to the heat conducting pipe 4, and the heat conducting pipe 4 simultaneously transfers the heat absorbed by the heating cavity 2 to the layered graphite sheets 5 together, and the layered graphite sheets 5 guide the heat to two ends of the low-temperature smoking set.
Referring to fig. 4, in an embodiment, a plurality of clamping grooves 6 are formed on the inner wall of the heat conducting tube 4, the clamping grooves 6 extend along the length direction of the heat conducting tube 4 and are uniformly distributed on the inner wall of the heat conducting tube, each clamping groove 6 is provided with a phase-change heat pipe 3, the shape of each clamping groove 6 is matched with that of the phase-change heat pipe 3, so that the phase-change heat pipe 3 can be clamped inside the corresponding clamping groove 6, and when the phase-change heat pipe 3 is assembled, the phase-change heat pipe 3 can be stretched into the heat conducting tube 4 to be aligned with the clamping groove 6 on the inner wall of the heat conducting tube 4, and then a proper force is applied to press the phase-change heat pipe 3 so that the phase-change heat pipe 3 is clamped in the clamping groove 6.
When the low-temperature smoking set works, after the temperature of the heating body 13 rises, heat begins to diffuse to the surrounding, as the heating cavity 2 is arranged in the heat conducting tube 4, and the phase-change heat tube 3 is arranged in the heat conducting tube 4, most of the heat emitted by the heating cavity 2 (except for the part for heating the low-temperature cigarettes) is absorbed by the phase-change heat tube 3 by utilizing the excellent heat conducting property of the phase-change heat tube 3 and the heat conducting tube 4, and part of the heat absorbed by the phase-change heat tube 3 is transferred to the heat conducting tube 4 and then transferred to the graphite sheet 5 by the heat conducting tube 4, and the heat transferred to the graphite sheet 5 is blocked and transferred to the two ends of the graphite sheet 5 due to the special internal atomic structure of the graphite sheet; part of the heat is transferred to two ends of the phase-change heat pipe 3, so that the purpose of guiding the heat to be emitted to a set direction is achieved.
Fig. 4 is a schematic view of a heat insulating member such as a heat conducting tube 4 around a heating cavity of the low-temperature smoking set according to the present invention, in which the middle part of the heat conducting tube 4 is contracted with respect to both ends to form a concave step-shaped contracted part 401, and the multi-layered graphite sheet 5 is wrapped at the position of the contracted part 401, so that when the heat conducting tube 4 absorbs a large amount of heat, it can transfer the absorbed heat to the layered graphite sheet 5, and since the structure inside the graphite sheet 5 is relatively special, the heat can be transferred to a set position through the graphite sheet 5, as described in detail below.
Fig. 5 is a schematic diagram of the internal structure and heat conduction of the graphite sheets 5 of the low-temperature smoking set according to the present invention, where each graphite sheet 5 is a layered structure shown in the figure, i.e. the bonding force between carbon atoms on each layer is very strong, the bonding density is much higher than the bonding force and bonding density of carbon atoms between layers, so that the interior of the layered graphite sheet 5 forms a stacked state of a plurality of layered structures, when external heat is required to pass through the layered graphite sheet 5, as shown in the figure, the heat is emitted along the extending direction of the layered structure due to the fact that the heat diffusion in the space between two adjacent layers is much weaker than the barrier of penetrating each layered structure layer by layer, and finally most of the heat is transmitted to the edge position of the layered graphite sheet 5, and the heat penetrating the layered graphite is a small part through the barrier layer by layer.
Fig. 6 is a schematic diagram of heat dissipation when the layered graphite sheet 5 of the low-temperature smoking set of the present invention is applied to the low-temperature smoking set, and when heat is diffused to the layered graphite sheet 5, as shown in the figure, a part of the heat moves towards the edge of the layered graphite sheet 5 under the barrier of the layered graphite sheet 5, and another part enters the interior of the layered graphite sheet 5 (layer by layer), moves towards the edge of the layered graphite sheet 5 further along the special structure of the interior of the layered graphite sheet 5, i.e. the heat which can finally completely penetrate the layered graphite sheet 5 is very little. It should be explained here that, in order to improve the heat insulation performance, the heat conducting tube 4 is preferably wrapped with a plurality of layers of graphite sheets 5, and a certain gap may be reserved between the heat conducting tube 4 and the heating cavity 2 to form an air heat insulation layer.
The working principle of the phase-change heat pipe 3 will be described in detail with reference to the specific structure of the phase-change heat pipe:
Referring to fig. 7, it is conceivable that the phase-change heat pipe 3 includes a closed pipe body 301 and a capillary structure layer 302 provided closely to an inner wall of the pipe body 301, the capillary structure layer 302 storing a phase-change liquid 303 therein. The phase-change heat pipe 3 is divided into an evaporation section, a convection section and a condensation section which are connected in sequence, the evaporation section faces the heating cavity 2, and the condensation section is tightly attached to the inner wall of the heat conducting pipe 4. The phase-change liquid 303 is adsorbed by the capillary structure layer, and when the change of the external temperature is small, the phase-change liquid 303 adheres to the capillary structure layer; when the external temperature rises, the internal temperature of the phase-change heat pipe 3 is higher and higher until the phase-change liquid 303 in the phase-change heat pipe is vaporized to form steam, the steam flows to a low-pressure area under the action of air pressure and is liquefied in the low-pressure area to form the phase-change liquid 303, and the phase-change liquid 303 flows to a steam generating area to form a circulation, and a large amount of heat is absorbed and released in the process to form a heat conducting member with excellent effect.
In practical design, due to different heat generation amounts of different smoking sets, a person skilled in the art can manually control the boiling point and condensation point of the phase-change liquid by adjusting the specific proportion of each substance component forming the phase-change liquid so as to meet the heat transfer requirement of the smoking set.
Of course, the heat pipe without capillary structure layer can be applied in the invention, and can be selected according to actual conditions.
Fig. 8 is a schematic diagram of heat flow in the phase-change heat pipe 3 in the low-temperature smoking set of the present invention when in operation, as shown in the drawing, when the local part of the phase-change heat pipe 3 is heated, heat is transferred to the heated part of the phase-change heat pipe 3 along with the liquid-vapor conversion in the phase-change heat pipe 3, and is transferred to the unheated part of the phase-change heat pipe 3 along with the vapor-liquid conversion, and is diffused out of the phase-change heat pipe 3, so as to form a path for heat dissipation.
Fig. 9 is a schematic vapor-liquid circulation diagram of the phase-change heat pipe 3 in the low-temperature smoking set in the invention when in operation, and when the part of the phase-change heat pipe 3 is heated, heat is transferred to the heated part of the phase-change heat pipe, the liquid in the heated part of the phase-change heat pipe 3 is heated and converted into vapor, the region is an evaporation region (section) (leftmost section in the direction shown in fig. 9), the vapor is extruded to other regions due to the generation of the vapor, the region through which the vapor flows is a convection region (section) (middle section in the direction shown in fig. 9), the vapor finally reaches the other region of the phase-change heat pipe 3 (rightmost section in the direction shown in fig. 9) after passing through the convection region, the temperature of the vapor in the phase-change heat pipe 3 is reduced after entering the condensation region, and the heat is released. As the liquid in the evaporation zone turns into vapor, negative pressure is formed at the capillary structure in this zone, and the liquid in the capillary structure in the adjacent zone is drawn into the evaporation zone, eventually forming a vapor flow path from the evaporation zone to the convection zone to the condensation zone, and a liquid flow path from the condensation zone to the convection zone to the evaporation zone, forming a closed cycle.
FIG. 10 is a schematic diagram of vapor-liquid circulation and heat flow in a phase-change heat pipe 3 in the low-temperature smoking set of the present invention when in operation, as shown in the drawing, after heat enters the phase-change heat pipe 3, liquid at corresponding parts is promoted to be vaporized to form vapor, the pressure of the vaporization area is increased, the vapor flows to a low-pressure area, reaches a condensation area with the lowest temperature through a convection area, is condensed back into liquid in the condensation area, and releases carried heat from the condensation area; the liquid in the capillary structure of the evaporation area is reduced to form negative pressure, so that the liquid in the convection area and the condensation area flows to the evaporation area to form liquid-vapor circulation, and the circulation process enables the phase-change heat pipe 3 to rapidly transfer heat in a required mode and direction.
Example 2
Referring to fig. 1, unlike embodiment 1, the heating chamber 2 of the low temperature smoking set of this embodiment is provided with two openings, one of which is an air inlet end and the other is a tobacco product insertion end, and the housing 1 is provided with an air inlet 7 communicating with the air inlet end and a tobacco product insertion opening 8 communicating with the tobacco product insertion end, and the air inlet 7, the heating chamber 2 and the tobacco product insertion opening 8 are sequentially communicated to form a straight-through flue.
When a user needs to suck, the cigarette is inserted into the heating cavity 2 from the cigarette inserting opening 8, the heating element in the heating cavity 2 heats tobacco materials in the cigarette to generate smoke for the user to suck, the cigarette is provided with a cigarette segment and a filter segment which are sequentially connected for facilitating the user to suck, the filter segment at least partially extends out of the shell 1, the user sucks by containing the filter leakage part, and external cold air flow enters the heating cavity 2 from the air inlet 7 to bring the smoke into the mouth of the user.
According to the embodiment, through the arrangement of the two openings of the heating cavity 2, one opening end is the air inlet end, the other opening end is the tobacco product inserting end, the shell 1 is respectively provided with the air inlet 7 communicated with the air inlet end and the tobacco inserting port 8 communicated with the tobacco product inserting end, the air inlet 7, the heating cavity 2 and the tobacco inserting port 8 are sequentially communicated to form a straight-through flue, heat transferred to the ends of the layered graphite sheet 5, the heat conducting tube 4 and the phase-change heat pipe 3 is intensively transferred to the air inlet 7 and the tobacco inserting port 8 of the low-temperature smoking set, and therefore, the side temperature of the whole low-temperature smoking set shell 1 can be maintained in a lower range.
In addition, after the external air flow enters the heating cavity 2 from the air inlet 7, the smoke generated by heating the tobacco product is brought into the mouth of a user from the smoke inserting port 8 for sucking; in the process of sucking by a user, when external cold air flows pass through the air inlet 7 and the smoke inserting port 8, a heat exchange process exists, so that heat intensively transferred to the smoke inserting port 8 and the air inlet 7 of the smoking set is transferred to the air flow and is quickly taken out of the smoking set, and the temperature of the end part of the smoking set can be effectively prevented from being too high; meanwhile, when the air flow passes through the air inlet 7, heat transferred from the end part of the heat insulation structure can preheat the air flow, and the aim of saving energy can be achieved.
For effectively reducing the temperature of smog, improve and inhale the sense of experience, can also add the condensing section between the cigarette material section and the filter tip section of cigarette, the condensing section can be designed as expansion condensation structure.
It will be appreciated that when the cartridge is used for the smoking article, the mouthpiece structure is also required to be provided at the mouthpiece 8, but the smoking article of this structure requires the mouthpiece structure to be removed from the housing 1 to enable loading of the cartridge, and is not very convenient to operate.
Referring to fig. 1, in an embodiment, a key 9 is provided on a housing 1 of the low-temperature smoking set of the present embodiment to control the start and close of the low-temperature smoking set, and in use, the low-temperature cigarette can be inserted into the low-temperature smoking set through a cigarette insertion port 8 for heating, so as to generate smoke for a user to suck. The dust cover 10 which can shield or open the cigarette inserting opening 8 can be additionally arranged at the cigarette inserting opening 8, when the dust cover 10 is opened, the cigarette inserting opening 8 is exposed, low-temperature cigarettes can be inserted into the cigarette inserting opening 8 for use, and when the dust cover 10 is closed, the cigarette inserting opening 8 can be prevented from falling into dust.
Referring to fig. 2, the low-temperature smoking set of the embodiment is provided with a battery 11, a PCB 12 and a heating element 13 in a housing 1, wherein the battery 11 is electrically connected with the PCB 12 and the PCB 12 is electrically connected with the heating element 13, and the battery 11 supplies power to the heating element 13 through the PCB 12, so that the heating element 13 is electrified to generate heat so as to heat the low-temperature cigarettes and generate smoke for a user to suck.
In this embodiment, the battery 11 and the PCB 12 are isolated from each other by the heat source through the heat insulation structure, and the battery 11 and the PCB 12 have a low operating temperature, so as to prevent the battery 11 and the PCB 12 from being disabled due to the too high internal temperature of the smoking set. In particular, when the PCB board 12 partitions the housing 1 into a battery mounting chamber in which the battery 11 is mounted and a heating element mounting chamber in which the heat insulating structure and the heating element are mounted, since the battery 11 and the heating element 13 are mounted in separate mounting chambers, the battery 11 is reduced in the progress of being affected by the heating heat of the heating element 13.
As a preferred scheme, the heating element 13 in this embodiment adopts a tubular heating element 13, the inner cavity of the tubular heating element 13 directly forms the heating cavity 2, the tubular heating element 13 may include a heat-conducting tube body and a heating sheet attached to the periphery of the heat-conducting tube body, and heat generated by energizing the heating sheet is transferred to the tobacco product through the heat-conducting tube body, preferably, the heat-conducting tube body may be made of ceramic material, and the heat-conducting tube body has high heat conductivity coefficient by using the ceramic material, so that the heat transfer efficiency is improved, and the energy consumption is reduced. It can be understood that the heating sheet can also be arranged on the inner periphery of the heat conducting pipe body, and the heat of the heating body in the structural form can be directly transferred to tobacco materials without passing through the side wall of the heat conducting pipe body, so that the heating efficiency is higher, but impurities such as tar are easy to adhere because the heating sheet directly faces the tobacco materials.
In practical application, the heating sheet can be also arranged into a plurality of heating sections with independent heating functions along the circumferential direction of the cross section of the heat conducting pipe body; the tobacco product is heated by the sections, so that the condition that the same part of the tobacco product is burnt after being heated for a long time is avoided, the using taste of a user is enhanced, the effective utilization rate of the tobacco product is improved, and the waste is reduced. Of course, the heating element 13 may be a rod-like or sheet-like heating element 13, and the corresponding heating method is a central heating method.
Referring to fig. 3, two ends of the heating cavity 2 are respectively communicated with the smoke inserting port 8 and the air inlet 7, and are communicated with the outside through the smoke inserting port 8 and the air inlet 7, so that air flow can enter the heating cavity 2 from the air inlet 7 and flow out from the smoke inserting port 8. A dust cover 10 is arranged at the smoke inlet 8 for opening or closing the smoke inlet 8, and a cleaning cover 14 is arranged at the air inlet 7 for opening or closing the air inlet 7, so that the heating cavity 2 can be cleaned through the air inlet 7.
In the casing 1, the key 9 is electrically connected with the PCB 12 (or other signal connection), and a vibration prompting motor 15 is further provided in the casing 1, which is controlled by the PCB 12, and when a user controls the on/off of the low temperature smoking set through the key 9, the PCB 12 sends a signal to the vibration prompting motor to make the user work to generate vibration, so as to prompt the user that the corresponding operation has been started. In the present invention, the vibration alert motor 15 is provided directly under the battery 11, and, while not limited thereto, the specific position of the vibration alert motor may be selectively arranged according to the specific distribution of other parts within the housing 1.
The above examples are only illustrative of the invention and are not intended to be limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Nor is it necessary or impossible to exhaust all embodiments herein. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (6)
1. A low temperature smoking article with an insulating structure comprising:
a housing having a heating chamber formed therein for loading and heating tobacco products;
The heat insulation structure is arranged in the shell and positioned at the periphery of the heating cavity;
The method is characterized in that: the heat insulation structure comprises a phase change heat pipe, a heat conduction pipe and graphite sheets;
The heat conducting pipe is sleeved outside the heating cavity, the graphite sheet is coated on the outer wall of the heat conducting pipe, and the phase-change heat pipe is fixedly attached to the inner wall of the heat conducting pipe;
clamping grooves extending along the axial direction of the heat conduction pipe are uniformly distributed on the inner wall of the heat conduction pipe, and the phase-change heat pipe is installed in the clamping grooves in a matching manner;
The heat conduction pipe is wrapped with a plurality of layers of graphite sheets;
the phase-change heat pipe comprises an evaporation section, a convection section and a condensation section which are connected in sequence, wherein the evaporation section faces the heating cavity, and the condensation section is tightly attached to the inner wall of the heat conduction pipe;
the outer wall of the heat conduction pipe is concavely provided with a groove, and the graphite sheet is arranged in the groove.
2. The cryogenic smoking article of claim 1, wherein: the phase-change heat pipe comprises a closed pipe body and a capillary structure layer which is tightly attached to the inner wall of the pipe body, and phase-change liquid is stored in the capillary structure layer.
3. A low temperature smoking article according to any one of claims 1-2, wherein: the two ends of the heating cavity are provided with openings, one opening end is an air inlet end, and the other opening end is a tobacco product inserting end; the shell is respectively provided with an air inlet communicated with the air inlet end and a tobacco inserting port communicated with the tobacco product inserting end, and the air inlet, the heating cavity and the tobacco inserting port are sequentially communicated to form a straight-through flue.
4. A low temperature smoking article according to claim 3, wherein: the shell is internally provided with a tubular heating body, and the inner cavity of the tubular heating body forms the heating cavity.
5. The cryogenic smoking article of claim 4, wherein: the shell is also internally provided with a battery assembly for supplying power to the heating body, the battery assembly comprises a battery and a PCB board, and the PCB board divides the shell into a battery installation cavity provided with the battery and a heating element installation cavity provided with the heat insulation structure and the heating body.
6. A low temperature smoking article according to claim 3, wherein: the shell is also provided with a dust cover which can shield the cigarette inserting port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910556234.7A CN112120287B (en) | 2019-06-25 | 2019-06-25 | Low-temperature smoking set with heat insulation structure |
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| CN201910556234.7A CN112120287B (en) | 2019-06-25 | 2019-06-25 | Low-temperature smoking set with heat insulation structure |
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| CN112120287A CN112120287A (en) | 2020-12-25 |
| CN112120287B true CN112120287B (en) | 2024-05-14 |
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