CN213848728U - Threaded hollow tube for heating cigarette and smoking product - Google Patents
Threaded hollow tube for heating cigarette and smoking product Download PDFInfo
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- CN213848728U CN213848728U CN202021737173.9U CN202021737173U CN213848728U CN 213848728 U CN213848728 U CN 213848728U CN 202021737173 U CN202021737173 U CN 202021737173U CN 213848728 U CN213848728 U CN 213848728U
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Abstract
The utility model belongs to the technical field of heating tobacco manufacturing, more specifically, the utility model relates to a screw thread hollow tube for heating cigarette relates to a smoking article simultaneously. Heating cigarette is with screw thread hollow pipe, including the body, the inner wall of body has many sun lines that are the spiral and distribute, and the sun line sets up along the circumferencial direction interval of body, and the sun line is for the protruding structure that forms for the body inner wall, and the groove structure between two adjacent sun lines is the shade. Another object of the utility model is to provide a smoking article, this smoking article's empty pipe section adopts foretell heating cigarette to use screw thread empty pipe. When the screw thread hollow pipe is applied to heating cigarettes, because the air current has a plurality of bellied spiral positive lines when passing through the hollow pipe on the inner wall of hollow pipe, the flue gas will advance along corresponding slot spiral (negative line), compares in direct current flue gas, and the concentration of flue gas is better, simultaneously because prolonged the gas circuit stroke, has better cooling effect.
Description
Technical Field
The utility model belongs to the technical field of heating tobacco manufacturing, more specifically, the utility model relates to a screw thread hollow tube for heating cigarette relates to a smoking article simultaneously.
Background
The heating cigarette is a new type of tobacco product, and the product features that the tobacco sheet or tobacco shred is heated without being ignited by open fire in electric or other heating mode. In the traditional cigarette, tobacco raw materials are put on and then smoked, the local maximum temperature can reach 600-900 ℃, the tobacco generates a series of complex reactions including oxidation reaction, reduction reaction and thermal cracking reaction at such high temperature, and extremely complex smoke components including a plurality of harmful components are generated. The heated cigarette can release tobacco and other spice components at a lower heating temperature, generally about 300 ℃, so that a large amount of harmful components are reduced on the basis of meeting the smoking experience of consumers. Meanwhile, the cigarette is heated without generating any cigarette ash, and the cigarette is not required to be ignited by a lighter, so that the environmental pollution is reduced, and the safety performance is improved.
The empty pipe section can be used to most to current heating cigarette, and the empty pipe section mainly plays the effect that supports cigarette structure and cooling, and this empty pipe is generally rolled up by cellulose paper and is formed, and the inner wall is smooth structure, and the flue gas can form the direct current flue gas when empty pipe section, and the cooling effect is limited, and the flue gas concentration is not enough.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the threaded hollow pipe for heating cigarettes is provided, and the cooling effect can be effectively improved.
For solving the technical problem the utility model discloses the technical scheme who adopts is: heating cigarette is with screw thread hollow pipe, including the body, the inner wall of body has many sun lines that are the spiral and distribute, and the sun line sets up along the circumferencial direction interval of body, and the sun line is for the protruding structure that forms for the body inner wall, and the groove structure between two adjacent sun lines is the shade.
Further, the method comprises the following steps: the two ends of the male line are superposed with the two end faces of the tube body.
Further, the method comprises the following steps: the male wires are uniformly arranged along the circumferential direction of the pipe body at intervals; the number of positive lines is 6 to 12.
Further, the method comprises the following steps: on the radial section of the pipe body, the inner side lines of the female line are concentric, the inner side lines of the male line are concentric, the two circles are concentric circles, the center of the concentric circle coincides with the center of the outer circle of the pipe body, and the side line of the male line is collinear with the center of the outer circle; the inner side line of the female line refers to the contour line of the bottom wall of the groove on the radial section, the inner side line of the male line refers to the contour line of the top end of the bulge on the radial section, and the side line of the male line refers to the contour line of the side wall of the bulge on the radial section.
Further, the method comprises the following steps: on the radial section of the pipe body, the height of the inner side line of the male line is 0.5mm-1.0mm, and the height of the inner side line of the male line refers to the vertical distance between the top end of the protrusion and the inner wall of the pipe body.
Further, the method comprises the following steps: the helix angle of the positive line is 15-30 degrees.
Further, the method comprises the following steps: the pipe body, the male wire and the female wire are of an integral structure formed by injection molding.
Further, the method comprises the following steps: the material of the threaded hollow pipe is one of starch, polylactic acid, polyethylene and polypropylene.
Another object of the utility model is to provide a smoking article, this smoking article's empty pipe section adopts foretell heating cigarette to use screw thread empty pipe.
Preferably, the smoking article comprises, in order, a filter section, a cooling section, an empty tube section and a smoking section.
The utility model has the advantages that: when the thread hollow pipe is applied to heating cigarettes, as the airflow passes through the hollow pipe, the inner wall of the hollow pipe is provided with a plurality of raised spiral male lines, and the smoke spirally advances along the corresponding grooves (female lines). According to the aerodynamics principle, the resistance that direct current flue gas received is littleer for the flue gas that the spiral gos forward, and the consumer will experience littleer suction resistance, and the flue gas is more concentrated, is difficult to disperse. In addition, because the flue gas is the spiral circuit and advances, prolonged the air current stroke to a certain extent, increased the contact time of flue gas and empty pipe wall, compare and have better cooling effect in direct current flue gas.
Drawings
FIG. 1 is a schematic diagram of a cigarette structure according to an embodiment of the present invention;
fig. 2 is a schematic view of a radial cross-section structure of a pipe body according to an embodiment of the present invention;
fig. 3 is a schematic view of a radial cross-section structure of a pipe body according to another embodiment of the present invention;
FIG. 4 is a schematic view of the wall thickness of the tube body and the height of the inner side line of the male wire according to the present invention;
FIG. 5 is a dimension schematic of a pitch angle of the present invention;
the labels in the figure are: 100 is a cooling section, 51 is a filter section, 52 is an empty tube section, 53 is a smoking section, 1 is a tube body, 2 is an external line, and 3 is an internal line.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 2 and 3, the utility model provides a heating screw thread blank pipe for cigarette includes body 1, and body 1's inner wall has many sun lines 2 that are the spiral and distribute, and sun lines 2 sets up along body 1's circumferencial direction interval, and sun lines 2 is for the protruding structure that forms for body 1 inner wall, and the groove structure between two adjacent sun lines 2 is female line 3. The male thread 2 may be provided in the form of a left-hand thread or a right-hand thread. When this screw thread hollow pipe was applied to the heating cigarette, the flue gas can form spiral air current at spiral recess (negative line 3) because of the spiral arch (positive line 2) of hollow pipe inner wall through the hollow pipe section. According to the aerodynamic principle, spiral flue gas receives less air resistance than direct current flue gas, and the flue gas is more concentrated simultaneously. In addition, because the flue gas is the spiral circuit and advances, prolonged the air current stroke to a certain extent, increased the contact time of flue gas and empty pipe wall, compare and have better cooling effect in direct current flue gas.
For effectively guaranteeing the cooling effect, the sun line 2 of body 1 is preferably arranged as follows: the two ends of the male wire 2 are superposed with the two end faces of the tube body 1. The male wires 2 are uniformly arranged along the circumferential direction of the pipe body 1 at intervals; the number of the positive lines 2 is 6 to 12.
Referring to fig. 3, in order to improve the cooling effect, in a preferred mode, on a radial cross section of the pipe body 1, the inner side lines of the female line 3 are concentric, the inner side lines of the male line 2 are concentric, the two circles are concentric circles, the center of the concentric circle coincides with the center of the outer circle of the pipe body 1, and the side line of the male line 2 is collinear with the center of the outer circle; the inner side line of the female line 3 refers to the contour line of the bottom wall of the groove on the radial section, the inner side line of the male line 2 refers to the contour line of the top end of the bulge on the radial section, and the side line of the male line 2 refers to the contour line of the side wall of the bulge on the radial section.
In order to effectively ensure the cooling effect, referring to fig. 4, on the radial section of the pipe body 1, the height h of the inner side line of the male line 2 is 0.5mm-1.0mm, and the height h of the inner side line of the male line 2 is the vertical distance between the top end of the protrusion and the inner wall of the pipe body 1. The wall thickness z of the tube 1 is the distance between the bottom surface of the groove where the female wire 3 is located and the outer circumferential surface of the tube 1. In the embodiment shown in fig. 3, the inside line height h of the positive line 2 can be calculated according to the difference between the radius of the circle on which the inside line of the negative line 3 is located and the radius of the circle on which the inside line of the positive line 2 is located; the wall thickness z of the tube body 1 can be calculated from the difference between the outer radius of the tube body 1 and the radius of the inner line of the female line 3. Fig. 5 shows a developed plan view of the tubular body 1 and the male wire 2, the male wire 2 having a helix angle beta of 15-30 deg., which helix angle beta may also be referred to as the wrap angle. The pitch L (the winding pitch) of the male wire 2 can be calculated from the diameter D of the inner wall of the pipe body 1, and L ═ pi D/tg β.
For convenient processing preparation to effectively guarantee the cooling effect, body 1, positive line 2 and negative line 3 are injection moulding's integral type structure. The material of the threaded hollow pipe can be one of starch, polylactic acid, polyethylene and polypropylene.
The utility model provides a screw thread air traffic control structure can be applied to in the heating cigarette of the overwhelming majority, and figure 1 shows a typical cigarette structure, and it includes filter section 51, cooling section 100, air traffic control section 52, the section of fuming 53 in proper order, the utility model provides a screw thread air traffic control is used for forming air traffic control section 52.
Example 1:
a threaded hollow pipe for heating cigarettes is characterized in that the outer diameter of a pipe body is 7mm, and the wall thickness is 1 mm.
This screw thread hollow pipe sets up 6 positive lines, is clockwise spiral from any terminal surface of hollow pipe, and the angle of twining is 15, and positive line height h is 0.5mm, positive line circle diameter d is 4 mm. If the hollow pipe is completely split and paved along the axial direction, the internal thread is in a straight line shape.
The hollow pipe takes modified corn starch as a main forming raw material and is formed by injection molding on a specific mold.
Example 2:
a thread hollow pipe for heating cigarettes has a pipe body with an outer diameter of 7mm and a wall thickness of 0.5 mm.
This screw thread hollow pipe sets up 12 positive lines, is anticlockwise spiral from any terminal surface of hollow pipe, and the angle of twining is 30, and positive line height h is 1.0mm, positive line circle diameter d is 4 mm. If the hollow pipe is completely split and paved along the axial direction, the internal thread is in a straight line shape.
The hollow pipe takes modified polylactic acid as a main forming raw material and is formed by injection molding on a specific mold.
Test example 1:
the hollow tube obtained in example 1-2 was rolled into a heated cigarette in a certain size, and the temperature of the smoke at the outlet of the hollow tube was measured by a smoke extractor. In order to illustrate the better cooling effect of the threaded hollow pipe, smooth inner wall hollow pipes made of the same materials are respectively adopted as comparison groups and are respectively corresponding to the numbers 1 'and 2'.
Each 20 cigarettes is a group, the average value is taken as a test value, and the result is shown in Table 1.
TABLE 1 comparison of temperature of flue gas at the outlet of the blank pipe
| Group of | 1 | 1' | 2 | 2' |
| Exit tube flue gas temperature/° c | 156 | 164 | 137 | 142 |
As shown in Table 1, the outlet flue gas temperature of 2 kinds of threaded hollow pipes is less than that of the corresponding smooth hollow pipe, and the outlet flue gas temperature difference of the embodiments 1 and 2 is mainly due to different cooling effects of different materials, wherein the better is the polylactic acid hollow pipe. In conclusion, because the flue gas is spiral motion in the screw thread hollow pipe, so lengthened the gas circuit stroke, compare in the direct current flue gas through smooth hollow pipe can further reduce the temperature of flue gas.
Test example 2:
the paper tubes obtained in the examples 1 and 2 are rolled into a heated cigarette according to a certain size, meanwhile, a comparison group is set according to the test example 1, the cigarette in the 4 groups is subjected to sensory evaluation according to the specification of the international GB5606.4-2005 cigarette sensory technical requirement, the smoke concentration ratio is mainly considered, the single index is fully divided into 10 points, the difference is 0.5 point, the more the smoke is dispersed, the lower the score is, and the higher the concentration ratio is, the higher the score is.
Each 5 cigarettes was grouped, and the results are shown in Table 2.
TABLE 2 sensory evaluation of cigarettes made from hollow tubes
| Group of | 1 | 1' | 2 | 2' |
| Outlet flue gas concentration | 8.5 | 8.0 | 8.5 | 8.0 |
As shown in table 2, the spiral smoke concentration through 2 kinds of thread hollow pipes is all better than the corresponding group, and the outlet smoke concentration difference of the embodiments 1 and 2 is mainly that the thread inside the thread hollow pipe is different. In conclusion, the flue gas can form spiral air current because of the screw thread of air pipe inner wall through the screw thread air pipe, according to the aerodynamic principle, spiral flue gas receives less air resistance than direct current flue gas, and the flue gas is more concentrated simultaneously.
Claims (9)
1. Heating cigarette is with screw thread hollow tube, including body (1), its characterized in that: the inner wall of the pipe body (1) is provided with a plurality of male wires (2) which are distributed spirally, the male wires (2) are arranged at intervals along the circumferential direction of the pipe body (1), the male wires (2) are protruding structures formed relative to the inner wall of the pipe body (1), and a groove structure between every two adjacent male wires (2) is a female wire (3); on the radial section of the pipe body (1), the inner side lines of the female line (3) are in a same circle, the inner side lines of the male line (2) are in a same circle, the two circles are concentric circles, and the circle center of the concentric circles is superposed with the circle center of the excircle of the pipe body (1); the side line of the positive line (2) is collinear with the center of the circle; the inner side line of the female line (3) refers to the contour line of the bottom wall of the groove on the radial section, the inner side line of the male line (2) refers to the contour line of the top end of the bulge on the radial section, and the side line of the male line (2) refers to the contour line of the side wall of the bulge on the radial section.
2. The threaded hollow tube for heating cigarettes according to claim 1, characterized in that: the two ends of the male wire (2) are superposed with the two end surfaces of the tube body (1).
3. The threaded hollow tube for heating cigarettes according to claim 1, characterized in that: the male wires (2) are uniformly arranged at intervals along the circumferential direction of the pipe body (1); the number of the positive lines (2) is 6 to 12.
4. The threaded hollow tube for heating cigarettes according to claim 1, characterized in that: on the radial section of the pipe body (1), the height (h) of the inner side line of the male line (2) is 0.5mm-1.0mm, and the height (h) of the inner side line of the male line (2) refers to the vertical distance between the top end of the protrusion and the inner wall of the pipe body (1).
5. The threaded hollow tube for heating cigarettes according to claim 1, characterized in that: the helix angle (beta) of the male line (2) is 15-30 degrees.
6. The threaded hollow tube for heated cigarettes according to any one of claims 1 to 5, characterized in that: the pipe body (1), the male wire (2) and the female wire (3) are of an injection molding integrated structure.
7. The threaded hollow tube for heating cigarettes according to claim 6, characterized in that: the material of the threaded hollow pipe is one of starch, polylactic acid, polyethylene and polypropylene.
8. A smoking article comprising an empty tube segment (52), characterized in that: the hollow pipe section (52) adopts the thread hollow pipe for the heating cigarette in any one of claims 1 to 7.
9. The smoking article according to claim 8, wherein: the smoking article comprises, in order, a filter section (51), a cooling section (100), an empty tube section (52) and a smoking section (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021737173.9U CN213848728U (en) | 2020-08-19 | 2020-08-19 | Threaded hollow tube for heating cigarette and smoking product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021737173.9U CN213848728U (en) | 2020-08-19 | 2020-08-19 | Threaded hollow tube for heating cigarette and smoking product |
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| Publication Number | Publication Date |
|---|---|
| CN213848728U true CN213848728U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021737173.9U Active CN213848728U (en) | 2020-08-19 | 2020-08-19 | Threaded hollow tube for heating cigarette and smoking product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114732155A (en) * | 2022-04-15 | 2022-07-12 | 河南中烟工业有限责任公司 | Three-section type heating cigarette and heating smoking set |
| WO2023078001A1 (en) * | 2021-11-03 | 2023-05-11 | 深圳麦时科技有限公司 | Heating assembly and aerosol generating device |
-
2020
- 2020-08-19 CN CN202021737173.9U patent/CN213848728U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023078001A1 (en) * | 2021-11-03 | 2023-05-11 | 深圳麦时科技有限公司 | Heating assembly and aerosol generating device |
| CN114732155A (en) * | 2022-04-15 | 2022-07-12 | 河南中烟工业有限责任公司 | Three-section type heating cigarette and heating smoking set |
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