CN110074455A - Cool down filter tip - Google Patents
Cool down filter tip Download PDFInfo
- Publication number
- CN110074455A CN110074455A CN201910355318.4A CN201910355318A CN110074455A CN 110074455 A CN110074455 A CN 110074455A CN 201910355318 A CN201910355318 A CN 201910355318A CN 110074455 A CN110074455 A CN 110074455A
- Authority
- CN
- China
- Prior art keywords
- ontology
- passage
- mixing chamber
- channel
- filter tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002156 mixing Methods 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 25
- 235000019505 tobacco product Nutrition 0.000 claims description 9
- 238000010146 3D printing Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 37
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 241000208125 Nicotiana Species 0.000 abstract description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 3
- 210000000214 mouth Anatomy 0.000 description 6
- 238000005338 heat storage Methods 0.000 description 5
- 239000011232 storage material Substances 0.000 description 5
- 206010006784 Burning sensation Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003571 electronic cigarette Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010053615 Thermal burn Diseases 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 206010013082 Discomfort Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
Abstract
The invention discloses a kind of cooling filter tips, are related to tobacco filter field.Including ontology, suction nozzle is provided with above ontology, ontology is using cylindrical structure made of metal material.First passage, second channel, mixing chamber and inlet chamber are offered in ontology.Mixing chamber is located at the top of ontology, and inlet chamber is located at the lower part of ontology.Helically structure, one end of first passage are connected to first passage with inlet chamber, and the other end of first passage is connected to mixing chamber.One end of second channel is connected to inlet chamber, and the other end of second channel is connected to mixing chamber.Suction nozzle is connected to mixing chamber, connector sleeve is fixedly installed below ontology, structure, centre bore are connected connector sleeve with inlet chamber in a ring.When suction nozzle sucks flue gas, flue gas reaches mixing chamber by first passage, second channel.Since helically structure, rapid heat dissipation, two kinds of flue gases rapid drop in temperature of mixed population in mixing chamber reach cooling purpose to first passage.Its clever structure, it is small in size, it is light-weight.
Description
Technical field
The present invention relates to tobacco filter field, in particular to a kind of flue gas cool-down filter tip.
Background technique
Flue gas is a kind of aerosol.The flue gas of traditional cigarette is generated after the thermal cracking bored by result of combustion of tobacco acts on, and is passed
Unite cigarette burning when combustion cone temperature up to 800 DEG C or more, traditional cigarette generally also will appear flue gas heat when sucking to tail portion
Peppery burning sensation, especially there is some cigarette without filter tip, and hot burning sensation is even more serious.New tobacco products is (such as: electronics
Cigarette, heating are not burnt cigarette) flue gas then generally generated by heating atomization technology, the design of cigarette structure often requires that lightly
Portable, so the design scheme for reducing cigarette volume as far as possible can be taken, flue gas atomization heating part and flue gas suck bite area
The distance between it is also relatively short.Either traditional cigarette or new tobacco products, if after the flue gas of tobacco product generates
Deficiency is condensed to the process for sucking entrance, the flue-gas temperature sucked it will cause consumer is excessively high, generates to the hot of oral cavity
The discomforts such as burning sensation, that is, flue gas scald mouth, so that influence whether tobacco product sucks consumption experience.
To solve the problems, such as that flue gas scalds mouth, current foreign countries have carries out flue gas heat absorption in the way of chemicals phase transformation, but
It is that structure is more complicated, cost is also high.It is a kind of for heating not that such as application No. is the disclosure of the invention of CN201510045766.6
The external suction nozzle of burning tobacco product, including attachment section and bite area, are equipped between attachment section and bite area and circulate for flue gas
Exhaust gases passes, add phase-change heat-storage material in exhaust gases passes, the phase transition temperature of the phase-change heat-storage material is 15~90 DEG C.
The external suction nozzle of addition phase-change heat-storage material can further be filtered flue gas, and phase-change heat-storage material is inhaled in itself phase transformation
Heat is received, the hot burning sensation for the flue gas sucked can be reduced, and flue gas moist feeling can be improved, effectively reduce having into oral cavity
Evil object.Need to add phase-change heat-storage material on the filter stick of the invention, production technology is complicated, and product cost is higher.
Summary of the invention
To solve the above problems, the present invention adopts the following technical scheme that realization:
A kind of cooling filter tip, including ontology, suction nozzle is provided with above ontology, and the ontology is using column made of metal material
Body structure；
First passage, second channel, mixing chamber and inlet chamber are offered in the ontology；
Mixing chamber is located at the top of ontology, and inlet chamber is located at the lower part of ontology；
The first passage helically structure；
One end of the first passage is connected to the inlet chamber, and the other end of first passage is connected to the mixing chamber；
One end of the second channel is connected to the inlet chamber, and the other end of second channel is connected to the mixing chamber；
The suction nozzle is connected to the mixing chamber；
Connector sleeve is fixedly installed below the ontology, structure, centre bore are connected connector sleeve with the inlet chamber in a ring.
In use, the outlet flue of connector sleeve and tobacco product is connected.When sucking flue gas by suction nozzle, flue gas is from connection
Set enters inlet chamber, then divides and reaches mixing chamber by first passage, second channel.Due to first passage helically structure,
Total length is much larger than the length of second channel, in addition ontology is made of metal material, convenient for heat dissipation, the cigarette in first passage
Gas heat is gradually dissipated.There is an interval time sucking between first and second mouthful, passes through this interval time first
Flue gas heat in channel can be fallen to a certain temperature.When then sucking flue gas again, is injected and cooled down by first passage in mixing chamber
Flue gas and second channel hot fume afterwards, both flue gases mix in mixing chamber, thus overall rapid drop in temperature, finally
It is sucked by suction nozzle.Program clever structure, it is small in size, it is light-weight, it can effectively solve the problem that the problem of flue gas scalds mouth.
Preferably, the body peripheral edge is further fixedly arranged on multi-disc cooling fin, the length direction of the cooling fin and institute
The axial direction for stating ontology is parallel to each other.
The length direction of cooling fin and the axial direction of the ontology are parallel to each other, and are more convenient for radiating.
Preferably, the helical centre of the spiral helicine first passage and the axial line of the ontology overlap.
The axial line of helical centre and the ontology overlaps easy to process.
Preferably, the second channel is in straight hole structure, is located at the center of ontology.
Preferably, the mixing chamber and inlet chamber are cylindrical shape cavity structure；
The top center of the inlet chamber is arranged in one end of the second channel, and the other end of second channel is arranged in institute
State the bottom centre position of mixing chamber；
The other end of the first passage is arranged on the side wall of the mixing chamber.
The bottom centre position of the mixing chamber is arranged in the other end of second channel, and the other end setting of first passage exists
On the side wall of the mixing chamber, when by suction nozzle air-breathing, the gas in two channels, in 90 ° of flowings, generates collision in mixing chamber
And it quickly mixes.
Preferably, rough bulge-structure is set on the conduit wall of the first passage, to increase channel surface area.
Preferably, the ontology is made using aluminum alloy materials and using 3D printing.
Preferably, it can be filled with filter core in the suction nozzle, suction nozzle is in flat structure.
Preferably, the connector sleeve outer surface is fixedly installed external screw thread, for connecting with new tobacco products cigarette.
Preferably, the center-hole diameter of the connector sleeve and the internal diameter of cigarette are mutually matched.
The beneficial effect comprise that design is rationally, clever structure is small in size, radiating efficiency is high, and stability is good, just
In assembling and maintenance.
Detailed description of the invention
Fig. 1 is general structure schematic diagram of the invention；
Fig. 2 is cross-sectional view of the invention；
Fig. 3 is internal channel structure schematic diagram of the present invention；
Fig. 4 is application schematic diagram of the present invention on electronic cigarette；
Fig. 5 is application schematic diagram of the present invention in traditional cigarette.
In figure, each label is respectively indicated: cooling filter tip 1, electronic cigarette or traditional cigarette 2, ontology 10, connector sleeve 11,
Suction nozzle 12, first passage 100, second channel 101, mixing chamber 102, inlet chamber 103.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application embodiment clearer, implement below in conjunction with the application
Fig. 1-5 in mode, is clearly and completely described the technical solution in the application embodiment, it is clear that described reality
The mode of applying is a part of embodiment of the application, rather than whole embodiments.Based on the embodiment in the application, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the application
The range of protection.Therefore, the detailed description of the presently filed embodiment provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present application of protection is sought, but is merely representative of the selected embodiment of the application.Based on the embodiment in the application,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Apply for the range of protection.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
It describes the application and simplifies description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore should not be understood as the limitation to the application.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present application, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in this application.
In this application unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
As shown in Figure 1-3, a kind of cooling filter tip 1, including ontology 10, ontology 10 are provided with suction nozzle 12, ontology 10 above
For using cylindrical structure made of metal material, it is contemplated that its internal structure is more special, the bad processing of traditional handicraft, therefore
Ontology 10 is preferably made using aluminum alloy materials and using 3D printing.
As shown in Figures 2 and 3, offered in ontology 10 first passage 100, second channel 101, mixing chamber 102 and into
Air cavity 103.
Mixing chamber 102 is located at the top of ontology 10, and inlet chamber 103 is located at the lower part of ontology 10, and 103 lower end of inlet chamber is spacious
Mouthful.Mixing chamber 102 and inlet chamber 103 are cylindrical shape cavity structure, in order to process.
The helically structure of first passage 100, and helical centre and the axial line of ontology 10 overlap, spiral is along this
The winding from the bottom up of body 10.
One end of first passage 100 is connected to inlet chamber 103, and the other end of first passage 100 is connected to mixing chamber 102.
Preferably, the other end of first passage 100 is arranged on the side wall of mixing chamber 102, is mutually perpendicular to central axis.
One end of second channel 101 is connected to inlet chamber 103, and the other end of second channel 101 is connected to mixing chamber 102,
Preferably, second channel 101 is in straight hole structure, is located at the center of ontology 10, and one end of second channel 101 is arranged in air inlet
The bottom centre position of mixing chamber 102 is arranged in the top center of chamber 103, the other end of second channel 101.
Suction nozzle 12 is connected to mixing chamber 102, and suction nozzle 12 is in flat pipe structure, and it is filled with filter core, filter core sampling is existing
Some filter plugs.
Ontology 10 is fixedly installed connector sleeve 11 below, the structure in a ring of connector sleeve 11, centre bore and 103 phase of inlet chamber
Connection.11 outer surface of connector sleeve is fixedly installed external screw thread, for being connect with electronic cigarette, the center-hole diameter and biography of connector sleeve 11
The internal diameter of system Cigarette is mutually matched, and traditional cigarette cigarette can be inserted wherein and be capable of fixing.
In order to be more convenient for radiating, preferably, 10 outer peripheral edge of ontology is further fixedly arranged on multi-disc cooling fin 104 to embodiment, dissipates
The length direction of backing 104 and the axial direction of ontology 10 are parallel to each other.In addition, bumps are arranged not on the conduit wall of first passage 100
Flat bulge-structure, to increase channel surface area and then increase contact of the flue gas with tube wall convenient for heat dissipation.
As shown in figure 4, the present invention is in new tobacco products in application, the outlet flue of connector sleeve 11 and electronic cigarette 2 is connected
It connects.By suction nozzle 12 suck flue gas when, flue gas enters inlet chamber 103 from connector sleeve 11, then divide by first passage 100,
Second channel 101 reaches mixing chamber 102.Since helically structure, total length are much larger than second channel 101 to first passage 100
Length, in addition ontology 10 is made of metal material, convenient for heat dissipation, the flue gas heat in first passage 100 is gradually consumed
It dissipates.In general, have an interval time between first cigarette and second mouthful of cigarette sucking, and usually smoker holds cigarette arm meeting
Have and transfer the sagging movement that rests from mouth, by this interval time and holding the decentralization of cigarette arm causes air to accelerate flowing
Advantageous heat dissipation condition, the flue gas heat in first passage 100 can be fallen to a certain temperature.When then sucking flue gas again, mixing chamber
By 101 hot fume of flue gas and second channel after the injection cooling of first passage 100 in 102, both flue gases are in mixing chamber 102
Mixing, so that overall rapid drop in temperature, is sucked finally by suction nozzle 12.
As shown in figure 5, the present invention is in traditional cigarette in application, connector sleeve 11 is connect with the outlet flue of traditional cigarette 2.
When sucking flue gas by suction nozzle 12, flue gas enters inlet chamber 103 from connector sleeve 11, then divides by first passage 100, second
Channel 101 reaches mixing chamber 102.Since helically structure, total length are much larger than the length of second channel 101 to first passage 100
Degree, in addition ontology 10 is made of metal material, convenient for heat dissipation, the flue gas heat in first passage 100 is gradually dissipated.?
Sucking has an interval time between first and second mouthful, pass through the flue gas heat in this interval time first passage 100
It can fall to a certain temperature.When then sucking flue gas again, in mixing chamber 102 by after the injection cooling of first passage 100 flue gas and
101 hot fume of second channel, both flue gases mix in mixing chamber 102, thus overall rapid drop in temperature, finally by
Suction nozzle 12 is sucked.
Rationally, clever structure is small in size, radiating efficiency is high, and stability is good for program design, convenient for assembling and maintenance.
Claims (10)
1. a kind of cooling filter tip, including ontology (10), ontology (10) is provided with suction nozzle (12) above, it is characterised in that:
The ontology (10) is using column structure made of metal material；
First passage (100), second channel (101), mixing chamber (102) and inlet chamber are offered in the ontology (10)
(103)；
Mixing chamber (102) is located at the top of ontology (10), and inlet chamber (103) is located at the lower part of ontology (10)；
The first passage (100) helically structure；
One end of the first passage (100) is connected to the inlet chamber (103), the other end of first passage (100) with it is described
Mixing chamber (102) connection；
One end of the second channel (101) is connected to the inlet chamber (103), the other end of second channel (101) with it is described
Mixing chamber (102) connection；
The suction nozzle (12) is connected to the mixing chamber (102)；
The ontology (10) is fixedly installed connector sleeve (11) below, connector sleeve (11) structure in a ring, centre bore with it is described
Inlet chamber (103) is connected.
2. cooling filter tip according to claim 1, it is characterised in that:
Ontology (10) outer peripheral edge is further fixedly arranged on multi-disc cooling fin (104), the length direction of the cooling fin (104) with
The axial direction of the ontology (10) is parallel to each other.
3. cooling filter tip according to claim 1, it is characterised in that:
The helical centre of the spiral helicine first passage (100) and the axial line of the ontology (10) overlap.
4. cooling filter tip according to claim 1, it is characterised in that:
The second channel (101) is in straight hole structure, is located at the center of ontology (10).
5. cooling filter tip according to claim 1, it is characterised in that:
The mixing chamber (102) and inlet chamber (103) are cylindrical shape cavity structure；
Top center of one end setting of the second channel (101) in the inlet chamber (103), second channel (101)
The other end setting the mixing chamber (102) bottom centre position；
The other end of the first passage (100) is arranged on the side wall of the mixing chamber (102).
6. cooling filter tip according to claim 1, it is characterised in that:
Rough bulge-structure is set on the conduit wall of the first passage (100), to increase channel surface area.
7. cooling filter tip according to claim 1, it is characterised in that:
The ontology (10) is made using aluminum alloy materials and using 3D printing.
8. cooling filter tip according to claim 1, it is characterised in that:
It can be filled with filter core in the suction nozzle (12), suction nozzle (12) is in flat structure.
9. cooling filter tip according to claim 1, it is characterised in that:
Connector sleeve (11) outer surface is fixedly installed external screw thread, for connecting with new tobacco products cigarette.
10. cooling filter tip according to claim 1, it is characterised in that:
The center-hole diameter of the connector sleeve (11) and the internal diameter of cigarette are mutually matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910355318.4A CN110074455A (en) | 2019-04-29 | 2019-04-29 | Cool down filter tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910355318.4A CN110074455A (en) | 2019-04-29 | 2019-04-29 | Cool down filter tip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110074455A true CN110074455A (en) | 2019-08-02 |
Family
ID=67417585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910355318.4A Pending CN110074455A (en) | 2019-04-29 | 2019-04-29 | Cool down filter tip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110074455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110477447A (en) * | 2019-08-06 | 2019-11-22 | 王静云 | A kind of modified tubular air unit with helical duct |
| WO2022247661A1 (en) * | 2021-05-26 | 2022-12-01 | 安徽汉方国草生物科技有限公司 | Filter element and smoke producing product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1027072A (en) * | 1950-10-31 | 1953-05-07 | Condenser-filter applicable to pipes, cigarette holders and cigar holders | |
| US4677992A (en) * | 1986-02-10 | 1987-07-07 | Bliznak Bedrich V | Smoking apparatus having convoluted filtering/heat-reduction passageway |
| CN2698098Y (en) * | 2004-05-28 | 2005-05-11 | 吴景新 | Composite intensified filter tip |
| CN208175992U (en) * | 2018-03-30 | 2018-12-04 | 深圳市艾维普思科技有限公司 | Suction nozzle, atomizer and electronic cigarette using the suction nozzle |
| CN210017848U (en) * | 2019-04-29 | 2020-02-07 | 广西中烟工业有限责任公司 | Cooling filter tip |
-
2019
- 2019-04-29 CN CN201910355318.4A patent/CN110074455A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1027072A (en) * | 1950-10-31 | 1953-05-07 | Condenser-filter applicable to pipes, cigarette holders and cigar holders | |
| US4677992A (en) * | 1986-02-10 | 1987-07-07 | Bliznak Bedrich V | Smoking apparatus having convoluted filtering/heat-reduction passageway |
| CN2698098Y (en) * | 2004-05-28 | 2005-05-11 | 吴景新 | Composite intensified filter tip |
| CN208175992U (en) * | 2018-03-30 | 2018-12-04 | 深圳市艾维普思科技有限公司 | Suction nozzle, atomizer and electronic cigarette using the suction nozzle |
| CN210017848U (en) * | 2019-04-29 | 2020-02-07 | 广西中烟工业有限责任公司 | Cooling filter tip |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110477447A (en) * | 2019-08-06 | 2019-11-22 | 王静云 | A kind of modified tubular air unit with helical duct |
| WO2022247661A1 (en) * | 2021-05-26 | 2022-12-01 | 安徽汉方国草生物科技有限公司 | Filter element and smoke producing product |
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