CN112205669B - Low temperature smoking set with cooling member - Google Patents
Low temperature smoking set with cooling member Download PDFInfo
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- CN112205669B CN112205669B CN201910555277.3A CN201910555277A CN112205669B CN 112205669 B CN112205669 B CN 112205669B CN 201910555277 A CN201910555277 A CN 201910555277A CN 112205669 B CN112205669 B CN 112205669B
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- heat
- heating
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- conducting plate
- shell
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- 230000000391 smoking effect Effects 0.000 title claims abstract description 73
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 128
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 62
- 239000010439 graphite Substances 0.000 claims abstract description 62
- 235000019505 tobacco product Nutrition 0.000 claims abstract description 23
- 238000011068 loading method Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 23
- 235000019504 cigarettes Nutrition 0.000 claims description 21
- 241000208125 Nicotiana Species 0.000 claims description 16
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 16
- 230000005494 condensation Effects 0.000 claims description 16
- 238000001704 evaporation Methods 0.000 claims description 14
- 230000008020 evaporation Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 2
- 239000000779 smoke Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 11
- 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
- 238000012546 transfer Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 2
- 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
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011810 insulating material Substances 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
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission 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
- 238000002955 isolation Methods 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
- 230000002093 peripheral effect Effects 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
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention discloses a low-temperature smoking set with a cooling component, which comprises: a housing having a heating chamber formed therein for loading and heating tobacco products; a cooling member disposed between the grip portion of the housing and the heating chamber; the cooling component comprises a phase-change heat pipe, a heat conducting plate and a graphite sheet; the phase-change heat pipe is arranged at the position, close to the heating cavity, of the heat conducting plate, and the graphite sheet closely attached to the heat conducting plate is arranged between the heat conducting plate and the holding part of the shell. According to the invention, as the cooling component is arranged between the holding part of the shell and the heating cavity, the heat diffused from the heating cavity can be greatly absorbed by the phase-change heat pipe and the heat conducting plate, most of the absorbed heat is transferred to the graphite sheet, and after the heat is transferred to the graphite sheet, the heat finally transferred to the holding part of the low-temperature smoking set shell becomes extremely small due to the special structure inside the graphite sheet, so that the problem of scalding hands of the low-temperature smoking set shell is well solved.
Description
Technical Field
The invention belongs to the technical field of smoking articles, and particularly relates to a low-temperature smoking set with a cooling component.
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 part (holding part) of the shell of the low-temperature smoking set for holding by a user, and when in use, the user can generate bad user experience due to the overhigh temperature of the holding part; 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, it is an object of the present application to provide a low-temperature smoking article having a cooling member that can effectively prevent heat transfer to the side wall of the housing.
In order to solve the technical problems, the application adopts the following technical scheme:
a cryogenic smoking article with a cooling member comprising:
a housing having a heating chamber formed therein for loading and heating tobacco products;
A cooling member disposed between the grip portion of the housing and the heating chamber;
the cooling component comprises a phase-change heat pipe, a heat conducting plate and a graphite sheet;
The graphite sheet is arranged between the heat-conducting plate and the holding part of the shell and is clung to the heat-conducting plate.
Furthermore, clamping grooves extending along the axis direction of the heating cavity are uniformly distributed on the heat conducting plate, and the phase-change heat pipes are installed in the clamping grooves in a matching mode.
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 side wall of the heat conducting plate.
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.
Further, a plurality of layers of graphite sheets are stacked outside the heat conducting plate.
Further, the cooling members are arranged in pairs at the sides of the heating chamber.
Further, the graphite sheet is tightly attached to and integrally covers the inner side wall of the holding part.
According to the low-temperature smoking set in the technical scheme, 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.
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 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 low-temperature smoking set comprises a heating cavity, a low-temperature smoking set shell, a phase-change heat pipe, a graphite sheet, a phase-change heat pipe and a graphite sheet, wherein the phase-change heat pipe is arranged at a position close to the heating cavity and close to the heating cavity, the graphite sheet is arranged at a position between the heat-conducting plate and the heating cavity, and the graphite sheet is tightly attached to the heating cavity.
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 laminar graphite sheet, the heat conducting plate and the end part of the phase-change heat pipe 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 interval.
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 a user's mouth from the smoke inserting port, 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 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; in addition, when the air flow passes through the air inlet, heat transferred from the end part of the cooling member can preheat the air flow, so that energy sources are saved.
4. The heat that the heating chamber is outer to be dissipated can be to the both ends transmission of smoking set outwards through cooling component, therefore battery and PCB board operating temperature are lower, can prevent to lead to battery and PCB board to become invalid because of smoking set inside high temperature.
Drawings
FIG. 1 is an isometric view of a prior art smoking article;
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 an exploded view of the cooling element of 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.
Fig. 1 shows an axial view of a conventional low-temperature smoking set, which comprises a housing 1, a heating cavity for loading and heating tobacco products is formed inside the housing 1, a smoke inlet 8 communicated with the heating cavity is further formed on the housing 1, and the tobacco products are inserted into the heating cavity through the smoke inlet 8 for heating so as to generate smoke for a user to suck. In order to prevent substances such as dust from entering the smoking set from the smoke inlet 8 and polluting the smoking set, a dust cover 10 which can shield or open the smoke inlet 8 can be arranged on the shell 1.
When the smoking set is used, the side part of the smoking set shell is usually held by a hand to suck, and the part of the smoking set shell which is held by a user is defined as a holding part 101; because the heating temperature (220-250 ℃) of the heating body of the low-temperature smoking set is higher than the human body temperature, when the low-temperature smoking set works, heat can pass through the layer-by-layer structure to reach the holding part 101 of the smoking set shell, and when the low-temperature smoking set is used, a user can generate bad user experience due to the fact that the temperature of the holding part 101 is too high.
Referring to fig. 2 to 4, the low temperature smoking set having the cooling member of the present application includes a housing 1 in which a heating chamber 2 for loading and heating tobacco products is formed and a cooling member disposed between a grip portion 101 of the housing 1 and the periphery of the heating chamber 2. The cooling member comprises a phase change heat pipe 3, a heat conducting plate 4 and a graphite sheet 5. The heat conduction plate 4 fixed in the shell 1 is arranged at a position close to the heating cavity 2, the phase-change heat pipe 3 is arranged on the heat conduction plate 4 at a position close to the heating cavity 2, the graphite sheet 5 is arranged between the heat conduction plate 4 and the holding part 101 of the shell 1, and the graphite sheet 5 is simultaneously clung to the heat conduction plate 4, so that when the smoking set starts to work, a large amount of heat is diffused outwards from the periphery of the heating cavity 2, the diffused heat is firstly absorbed by the phase-change heat pipe 3 and the heat conduction plate 4 and is transferred to the graphite sheet 5, and finally, the heat is diffused out from the periphery of the holding part 101 of the shell along the extending direction of the graphite sheet 5, thereby achieving the purpose of preventing the heat from being transferred to the holding part 101.
Because the graphite flake 5 is thinner and is easy to break, the graphite flake 5 is directly pressed and fixed on the shell 1 through the heat conducting plate 4, and the graphite flake 5 not only keeps close contact with the heat conducting plate 4, but also is closely attached to the side wall of the shell 1.
Regarding the thickness and the area of the phase-change heat pipe 3, the heat-conducting plate 4 and the graphite sheet 5, those skilled in the art can adaptively select according to the actual heat-insulation requirement, in order to ensure the reliability of heat insulation, the graphite sheet 5 should be generally designed to cover the heat-conducting plate 4 integrally, and the heat-conducting plate 4 and the graphite sheet 5 should be designed to cover the holding part 101 of the housing integrally as much as possible.
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.
Referring to fig. 2, in an embodiment, to further prevent heat from being transferred to the side of the housing 1, the heating chamber 2 of the low-temperature smoking set of this embodiment is wrapped with a heat insulating material 16 (e.g., aerogel, vacuum tube, etc.), and heat transfer to the housing 1 is prevented by using excellent heat insulating ability of the heat insulating material 16.
When the smoking set works to generate a large amount of heat, the heat insulation material 16 firstly performs first-pass insulation on the heat of the heating cavity 2, the cooling component performs second-pass insulation on the heat emitted from the outside, and the heat transmitted from the heat insulation material is absorbed by the phase-change heat pipe 3 and the heat conducting plate 4, wherein one part of the heat absorbed by the phase-change heat pipe 3 is transmitted to the heat conducting plate 4, and the other part is transmitted to the end part of the heat conducting plate and emitted from the end part; a part of the heat received by the heat-conducting plate 4 is transferred to the laminar graphite sheet 5, and the other part is transferred to and emitted from the outer edge thereof; the lamellar graphite sheets 5 can finally separate the heat transferred by the heat conducting plate 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 of the holding part of the smoking set shell 1 is finally greatly reduced, and the problem of scalding hands caused by overhigh temperature of the side part of the shell 1 is avoided.
The insulation away from the cooling element of the present application will be elaborated on as follows:
referring to fig. 3 and 4, the heat conducting plate 4 is plate-shaped, one or more clamping grooves 6 are formed in the inner wall of the heat conducting plate 4, the clamping grooves 6 extend along the axial direction of the heating cavity 2 (the length direction of the heat conducting plate 4) and are uniformly distributed on the inner wall of the heating cavity, the phase-change heat pipes 3 are arranged in each clamping groove 6, the shape of each clamping groove 6 is matched with that of each phase-change heat pipe 3, so that the phase-change heat pipes 3 can be fixed in the corresponding clamping grooves 6, the graphite sheet 5 on the side, far away from the heating cavity, of the heat conducting plate 4 is tightly attached to the heat conducting plate 4, the graphite sheet 5, the heat conducting plate 4 and the phase-change heat pipes 3 form a cooling member, and the cooling members are arranged around the heating cavity 2, and the graphite sheet 4 of the cooling member is tightly attached to the shell 1 of the low-temperature smoking set. Preferably, the heat conductive plate 4 may be made of a material having a high heat conductivity such as an aluminum alloy or a copper alloy.
When the low-temperature smoking set works, heat begins to diffuse to the periphery, as the heat conducting plate 4 is arranged outside the heating cavity 2, and the phase-change heat pipe 3 is arranged in the heat conducting plate 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 pipe 3 by utilizing the excellent heat conducting property of the phase-change heat pipe 3 and the heat conducting plate 4, part of the heat absorbed by the phase-change heat pipe 3 is transferred to the heat conducting plate 4 and then transferred to the graphite sheet 5 by the heat conducting plate 4, and the heat transferred to the graphite sheet 5 is blocked and transferred to the peripheral wall of the graphite sheet 5 due to the special internal atomic structure of the graphite sheet, so that the heat transferred to the holding part is very little, thereby achieving the purpose of guiding the heat to emit to the set direction.
Fig. 4 is a schematic diagram of cooling components such as a heat conducting plate 4 at the periphery of a heating cavity of the low-temperature smoking set according to the present invention, wherein a layered graphite sheet 5 is disposed on a side of the heat conducting plate 4 facing the holding portion, so that when the heat conducting plate 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 will be 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.
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 plate 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 of the present invention when the low-temperature smoking set is in operation, and when the local heating part of the phase-change heat pipe 3 is heated, heat is transferred to the heated part of the phase-change heat pipe 3, the liquid in the heated part of the phase-change heat pipe is converted into vapor, the region is an evaporation region (leftmost part in the azimuth shown in fig. 9), the pressure of the evaporation region becomes larger due to the generation of the vapor, the vapor is extruded to other regions, the region through which the vapor flows is a convection region (middle part in the azimuth shown in fig. 9), the vapor finally reaches the other region (rightmost part in the azimuth shown in fig. 9) of the phase-change heat pipe 3 after passing through the convection region, the region is a condensation region, the temperature of the vapor in the phase-change heat pipe 3 drops 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.
Referring to fig. 1, in an embodiment, two ends of a heating cavity 2 of the low-temperature smoking set of the embodiment are provided with openings, one of the openings is an air inlet end, the other opening is a tobacco product inserting end, an air inlet 7 communicated with the air inlet end and a tobacco inserting opening 8 communicated with the tobacco product inserting end are respectively arranged on a shell 1, and the air inlet 7, the heating cavity 2 and the tobacco inserting 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 tip segment which are sequentially connected for facilitating the user to suck, the filter tip segment at least partially extends out of the shell 1, the user sucks through the leakage part of the filter tip, and external cold air flow enters the heating cavity 2 from the air inlet 7 to bring the smoke into the user opening.
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 laminar graphite sheet 5, the heat conducting plate 4 and the end part of 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 cooling component can preheat the air flow, and the aim of saving energy can be achieved.
Here, it should be explained that, in the low-temperature smoking set of the above-described structure, in addition to the heat transfer from the cooling member toward the heating chamber axial direction side, a part of the heat is transferred from the cooling member side perpendicular to the heating chamber axial direction to the low-temperature smoking set housing, and in order to direct the heat transfer toward the heating chamber axial direction, a heat insulating layer (not shown) may be provided on the circumferential side wall of the heat conducting plate 4 and the graphite sheet 5 perpendicular to the heating chamber axial direction, and the heat transfer from this side is prevented by the heat insulating layer, so that the heat transferred from the cooling member is substantially entirely transferred to the air inlet side and the mouthpiece side of the smoking set, and the temperature of the smoking set housing can be further reduced. Specifically, the heat isolation layer can be made of heat insulation materials such as heat insulation cotton.
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 and 2, in an embodiment, a key 9 is provided on a housing 1 of the low-temperature smoking set for controlling the start and stop of the low-temperature smoking set, and in use, a low-temperature cigarette can be inserted into the low-temperature smoking set through a cigarette insertion opening 8 for heating so as to generate smoke for a user to suck. When the dust cover 10 is opened, the cigarette inserting opening 8 is exposed, the 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 cooling member, 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 an excessively 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 cooling member 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 by the influence of 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 tube 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 tube body, so that the heating efficiency is higher, but the heating sheet directly faces the tobacco materials, so that tar and other substances are easy to adhere.
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 (5)
1. A cryogenic smoking article with a cooling member comprising:
a housing having a heating chamber formed therein for loading and heating tobacco products;
A cooling member disposed between the grip portion of the housing and the heating chamber;
the method is characterized in that: the cooling component comprises a phase-change heat pipe, a heat conducting plate and a graphite sheet;
The phase change heat pipe is arranged at the position, close to the heating cavity, of the heat conducting plate, and the graphite sheet is arranged between the heat conducting plate and the holding part of the shell and is clung to the heat conducting plate;
Clamping grooves extending along the axis direction of the heating cavity are uniformly distributed on the heat conducting plate, and the phase-change heat pipes are installed in the clamping grooves in a matching mode;
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 side wall of the heat conducting plate;
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;
A plurality of layers of graphite sheets are stacked outside the heat conducting plate;
the graphite sheet is tightly attached to and covers the inner side wall of the holding part.
2. The cryogenic smoking article of claim 1, 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.
3. The cryogenic smoking article of claim 2, wherein: the shell is internally provided with a tubular heating body, and the inner cavity of the tubular heating body forms the heating cavity.
4. A low temperature smoking article according to claim 3, wherein: the shell is also internally provided with a battery assembly for supplying power to the heating element, the battery assembly comprises a battery and a PCB board, and the PCB board divides the shell into a battery installation cavity for installing the battery and a heating element installation cavity for installing the heating element.
5. The cryogenic smoking article of claim 2, wherein: the shell is also provided with a dust cover which can shield the cigarette inserting port.
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| CN201910555277.3A CN112205669B (en) | 2019-06-25 | 2019-06-25 | Low temperature smoking set with cooling member |
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| CN112205669B true CN112205669B (en) | 2024-05-17 |
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| CN115251469A (en) * | 2021-04-30 | 2022-11-01 | 深圳市合元科技有限公司 | Aerosol generating device and system |
| CN114424841A (en) * | 2022-02-24 | 2022-05-03 | 湖北中烟工业有限责任公司 | Smoking set shell heat abstractor based on gas-liquid phase transition |
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