CN210538884U

CN210538884U - Improved tubular airflow unit with spiral channel

Info

Publication number: CN210538884U
Application number: CN201921261491.XU
Authority: CN
Inventors: 王静云; 刘润昌; 张建波; 马涛; 高朝
Original assignee: Yunnan Changyi Technology Co Ltd
Current assignee: Yunnan Changyi Technology Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-05-19
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses an improved generation tubulose air current unit with helical passage, include heat-absorbing shell, the insulating layer of following interior toward outer setting, still include support piece: the support is positioned between the heat absorbing layer and the heat insulating layer and spirally wound on the heat absorbing layer to form a spiral channel; and/or the support member is positioned outside the heat insulation layer and spirally wound to form a spiral channel. The utility model has a plurality of spiral channel structures, which can effectively disperse the way of smoke flowing through, and the spiral structure can prolong the air flow path, finally effectively reduce the temperature of the mainstream smoke and the surface temperature of the filter stick through transverse heat transfer; the end surface of the utility model is a multi-channel structure, which can effectively support the fragrance-producing material and prevent the fragrance-producing material from being pushed out by the heating sheet; the utility model discloses can pack a large amount of functional material in its airflow channel, can effectively give cigarette fragrant composition and special function, promote cigarette suction taste and quality.

Description

Improved tubular airflow unit with spiral channel

Technical Field

The utility model relates to an improved generation tubulose air current unit with helical passage belongs to cigarette material technical field.

Background

When the non-combustion type smoking product is combusted, the base material containing tobacco is heated by an appliance but is not combusted, the heating temperature is generally not more than 300 ℃, but the aerosol generated by the non-combustion type smoking product needs to be filtered to meet the requirements of consumers on satisfaction and strength, so that the airflow temperature reaching the oral cavity can reach more than 100 ℃. To achieve the purpose of reducing the smoke temperature, a hollow tube made of spirally wound multiple layers of folded paper layers is widely used as a cooling section, and the use of the hollow tube in a filter rod is mentioned in patents such as "smoking article with end cavity of ventilation nozzle" with publication number CN106455681A, and "multi-component filter for smoking article and smoking article" with patent number CN 105495685. Although the hollow pipe is generally used at present, problems can occur in use due to the fact that the flow rate of smoke is high and is limited by the length and the material of the filter rod. Such as: the flowing path of the flue gas in the hollow pipe is a straight channel, so that the reduction speed of the temperature of the flue gas is slower, and the reduction amplitude is not large; the transverse heat transfer when the superheated smoke passes through enables a consumer to feel that the lips are hot when the cigarette is smoked; in addition, the hollow tube is generally arranged at the end close to the aroma generating material in the filter stick, and after the heating plate is inserted into the aroma generating material, the hollow structure of the hollow tube cannot well abut against the aroma generating material, so that part of the aroma generating material is pushed out by the heating plate.

In addition, the hollow tube of the prior art has a single form, the flavor and functional materials carried on the hollow tube are limited, and the functional characteristics which can be brought to the cigarette are not obvious. Therefore, in order to solve the problems, it is desirable to provide a filter rod material which can effectively reduce the smoke temperature of mainstream smoke, and can endow cigarettes with special flavor and function and improve smoking quality.

SUMMERY OF THE UTILITY MODEL

The utility model provides an improved generation tubulose air current unit with helical coiled passage to be used for solving current overheated flue gas passageway and be direct passageway, the pipeline can't support well simultaneously and produces fragrant material and make the part produce fragrant material and released by the heating plate, and the spices and the functional material that carry on the hollow tube are limited etc. not enough.

The tubular airflow unit with the spiral channel has large adsorption capacity of the fragrant substances, and can effectively reduce the smoke temperature and improve the sensory smoking quality of cigarettes.

The technical scheme of the utility model is that: an improved tubular gas flow unit with spiral channel comprises a heat absorbing layer 11 and an insulating layer 12 which are arranged from inside to outside, and further comprises a support 13: the support 13 is positioned between the heat absorbing layer 11 and the heat insulating layer 12 and spirally wound on the heat absorbing layer 11 to form a spiral channel; and/or support member 13 is helically wound over insulation layer 12 to form a helical channel.

The heat absorbing layer 11 and the heat insulating layer 12 are spirally rolled to form a tubular structure.

The heat absorption layer 11 is made of a heat absorption material, and the heat absorption material comprises one or more of wood pulp fiber, polylactic acid, polypropylene and polyethylene glycol.

The heat insulation layer 12 is made of heat insulation material, and the heat insulation material comprises one or more of cotton fiber, fibrilia, silicate, graphite and cellulose paper.

The spiral channel is added with functional material 14 which is distributed in a spiral shape.

The number of the spiral channels between the heat absorbing layer 11 and the heat insulating layer 12 is 1 or more: adhering the functional material 14 to the walls of the heat absorbing layer 11 and the heat insulating layer 12 in the spiral channel; or the functional material 14 is filled in a spiral channel between the heat absorbing layer 11 and the heat insulating layer 12 in a spiral winding mode; the support 13 does not intersect the functional material 14;

the number of spiral channels formed by spirally winding the heat insulation layer 12 is 1 or more: the functional material 14 is bonded to the exterior of the insulating layer 12 in a spiral wound manner.

The functional material 14 is one or more of linear, strip, sheet or granular materials.

The functional material 14 is one or more of cotton thread, hemp thread, cellulose strip, tobacco sheet, starch granule, active carbon granule, plant granule and gel granule.

The central line of the supporting piece 13 forms an angle larger than 0 ° and smaller than 90 ° with the longitudinal direction of the improved tubular gas flow unit 10 having the spiral passage.

The width of the supporting member 13 is at least 10% and less than 90% of the outer circumference of the tubular gas flow unit 10 having the spiral passage, and the thickness is at least 1.5 times and less than 5 times the thickness of the heat absorbing layer 11.

The utility model has the advantages that:

1) the utility model provides an improved generation tubulose air current unit with helical passage, its a plurality of helical passage structures can effectively disperse the flue gas and flow through the way, and helical structure can prolong the air current route, finally effectively reduces mainstream smoke temperature and through the filter rod surface temperature of horizontal heat transfer.

2) The utility model provides an improved generation tubulose airflow unit with helical passage, its terminal surface are the multichannel structure, can effectively support and produce fragrant material and be unlikely to by the heating plate release.

3) The utility model provides an improved generation tubulose air current unit with helical passage can pack a large amount of functional material in its air current channel, can effectively give cigarette fragrant composition and special function, promotes cigarette suction taste and quality.

Drawings

FIG. 1 is a schematic structural view of a tubular gas flow unit having a spiral passage in example 1 (without adding a functional material);

FIG. 2 is a schematic cross-sectional view of a tubular gas flow unit having a spiral passage according to example 1 (without addition of functional material);

FIG. 3 is a schematic structural view of a tubular gas flow unit having a spiral passage according to example 2 (with functional materials added);

FIG. 4 is a schematic cross-sectional view of a tubular gas flow unit having a spiral passage according to example 2 (with functional material added);

FIG. 5 is a graph of particulate matter content of mainstream smoke in example 2;

FIG. 6 is a schematic structural view of a tubular gas flow unit having a spiral passage according to example 3 (no functional material is added);

FIG. 7 is a schematic cross-sectional view of example 3 of a tubular gas flow cell having a spiral channel cut across AB (no functional material added);

FIG. 8 is a schematic structural view of a tubular gas flow unit having a spiral passage according to example 4 (with functional material added);

figure 9 is a schematic cross-sectional view of a tubular gas flow unit with spiral channels across HN of example 4 (with functional material added);

FIG. 10 is a graph of particulate matter content of mainstream smoke in example 4;

FIG. 11 is a schematic cross-sectional view of a tubular gas flow unit having a spiral passage according to example 5 (without addition of functional material);

FIG. 12 is a schematic cross-sectional view of a tubular gas flow unit having a spiral passage according to example 6 (with functional material added);

FIG. 13 is a graph of the particulate matter content of mainstream smoke in example 6;

FIG. 14 is a schematic cross-sectional view of a tubular gas flow cell with a spiral channel (no functional material added);

FIG. 15 is a schematic cross-sectional view of a tubular gas flow cell with a spiral channel (with functional material added);

the reference numbers in the figures are: 10-improved tubular gas flow unit with spiral channel, 11-heat absorbing layer, 12-heat insulating layer, 13-support member, 14-functional material.

Detailed Description

The invention will be further described with reference to the following drawings and examples, but the scope of the invention is not limited thereto.

Example 1: as shown in fig. 1 and fig. 2, an improved tubular airflow unit with a spiral channel (a tubular airflow unit with a spiral channel and a circumference of 22.0 mm) comprises a heat absorbing layer 11 and an insulating layer 12 which are arranged from inside to outside, and further comprises a support 13: the supporting member 13 is located between the heat absorbing layer 11 and the heat insulating layer 12 and spirally wound on the heat absorbing layer 11 to form a spiral channel. The thickness of a heat absorption layer 11 is 100 micrometers, the thickness of a heat insulation layer 12 is 70 micrometers, the thickness of a supporting piece 13 is 400 micrometers, the width of the supporting piece is 2mm, a distance of 400 micrometers exists between two functional layers, four supporting pieces 13 are arranged between the heat absorption layer 11 and the heat insulation layer 12, an included angle between the central line of each supporting piece 13 and the vertical line of an improved tubular airflow unit 10 with a spiral channel is 5 degrees, the improved tubular airflow unit is formed by spirally winding, and 4 spiral channels are arranged between the heat absorption layer 11 and the heat insulation layer.

Preparing a composite filter rod with 10mm diacetate fibers and 20mm repeated units of a spiral channel tubular airflow unit, and rolling and connecting the filter tip and the fragrance-producing base body together by using rolling and connecting equipment to obtain a cigarette product. Wherein the spiral channel tubular gas flow unit is located at the fragrance producing material end. Ordinary hollow-tube cigarette products of the same specification were prepared as controls. The cigarette smoking is simulated according to a cigarette smoking model specified in national standard YC/T29-1996, the temperature of the upstream end and the downstream end of the spiral channel tubular airflow unit and the control sample during cigarette smoking is detected by using a K-type thermocouple temperature detector, and the detection result is shown in Table 1.

TABLE 1 mainstream Smoke temperature test results

The test data in table 1 clearly show that the flue gas temperature after passing through the spiral channel tubular gas flow unit is reduced by 62.2 c, which is 21.6 c lower than the temperature of the ordinary hollow tube under the same conditions.

Example 2: as shown in fig. 3 and 4, in this embodiment, on the basis of embodiment 1, the functional material 14 is randomly added in all 4 spiral channels, and in this embodiment, the functional material is added in all 4 spiral channels (when there are a plurality of spiral channels, 1 spiral channel may be randomly selected to add the functional material, or the number of the spiral channels may be selected to be smaller than that of the spiral channels, or all the spiral channels may be added), and the added functional material is activated carbon particles, the particle size of which is 100 meshes, and the activated carbon particles are adhered to the walls of the heat absorbing layer 11 and the heat insulating layer 12 in the airflow channel by using glue during online molding.

Preparing a composite filter stick with a structure of 10mm diacetate fiber and 20mm repeated units of spiral channel tubular airflow units. The filter and tobacco are crimped together using a crimping apparatus, with a tubular air flow unit having a helical channel at the flavor-producing end. Example 1 was used as a control sample. Simulated smoking is carried out according to a cigarette smoking model specified in national standard YC/T29-1996, Cambridge filter discs are collected for GC-MS analysis, the components of the main stream smoke particulate matters of the two samples are compared, and the analysis result is shown in figure 5.

The data in the figure show that compared with a spiral channel airflow unit sample without adding activated carbon, the spiral channel tubular airflow unit with the added activated carbon particles obviously changes the chemical components of the main stream smoke of the tobacco product, and the total particulate matter, tar, CO, benzopyrene, tobacco-specific nitrosamine and phenolic substances are obviously reduced.

Example 3: as shown in fig. 6 and 7, an improved tubular airflow unit with a spiral channel (a tubular airflow unit with a spiral channel and a circumference of 22.5 mm) comprises a heat absorbing layer 11 and an insulating layer 12 which are arranged from inside to outside, and further comprises a support 13: the support 13 is located outside the thermal insulation layer 12 and spirally wound to form a spiral channel. The thickness of a heat absorption layer 11 is 300 mu m, the thickness of a heat insulation layer 12 is 180 mu m, the thickness of a support piece 13 is 500 mu m, the width of the support piece is 9mm, the heat absorption layer 11 is close to the heat insulation layer 12, 1 support piece 13 is spirally wound outside the heat insulation layer 12, the included angle between the central line of the support piece 13 and the longitudinal vertical line of an improved tubular airflow unit 10 with a spiral channel is 45 degrees, and after the heat insulation layer 12 and forming paper are wrapped by the forming paper, 1 spiral channel is formed between the heat insulation layer 12 and the forming paper.

Preparing a composite filter stick with 6mm of diacetate fiber, 24mm of spiral channel tubular airflow unit and 4mm of diacetate fiber repeating units. And (4) rolling the filter tip and the fragrance producing base body together by using rolling equipment to obtain the cigarette product. Wherein the spiral channel tubular airflow unit is positioned in the middle of the filter stick. Ordinary hollow-tube cigarette products of the same specification were prepared as controls. The cigarette smoking is simulated according to a cigarette smoking model specified in national standard YC/T29-1996, the temperature of the upstream end and the downstream end of the spiral channel tubular airflow unit and the control sample during cigarette smoking is detected by using a K-type thermocouple temperature detector, and the detection result is shown in Table 2.

TABLE 2 mainstream smoke temperature test results

The test data in table 2 clearly show that the flue gas temperature after passing through the spiral channel tubular gas flow unit is reduced by 50.6 c, which is 21.2 c lower than the temperature of the ordinary hollow tube under the same conditions.

Example 4: as shown in fig. 8 and 9, in this embodiment, based on embodiment 3, functional materials are added in 1 spiral channel formed between the heat insulating layer 12 and the forming paper. The functional material 14 is a cellulose strip loaded with mint essence and is bonded outside the heat insulation layer in a spiral winding manner. The winding angle of the cellulose rod in the helical channel coincides with the winding angle of the support 13, i.e. the angle between the centre line of the cellulose rod and the longitudinal vertical of the improved tubular gas flow unit 10 with helical channel is 45 °.

Preparing a composite filter stick with 6mm of diacetate fiber, 24mm of improved tubular airflow unit with a spiral channel and 4mm of diacetate fiber. The filter and flavor-producing material are crimped together using a crimping apparatus with a tubular air flow unit having a spiral passage located in the middle of the filter rod. The spiral channel airflow unit of example 3 was used as a control sample. Simulated smoking is carried out according to a cigarette smoking model specified in national standard YC/T29-1996, Cambridge filter discs are collected for GC-MS analysis, the components of the main stream smoke particulate matters of the two samples are compared, and the analysis result is shown in figure 10.

The data in the figure show that compared with the sample of the spiral channel airflow unit without the cellulose strip loaded with the mint essence, the spiral channel airflow unit with the cellulose strip loaded with the mint essence enables the main stream smoke chemical components of the tobacco products to be obviously changed, the menthol content is obviously increased, and the phenolic substances are obviously reduced.

Example 5: as shown in fig. 11, an improved tubular airflow unit with spiral channels (tubular airflow unit with spiral channels and circumference of 23.3 mm) comprises a heat absorbing layer 11 and an insulating layer 12 which are arranged from inside to outside, and further comprises a support 13: the support 13 is positioned between the heat absorbing layer 11 and the heat insulating layer 12 and spirally wound on the heat absorbing layer 11 to form a spiral channel; and support member 13 is positioned outside insulating layer 12 and spirally wound to form a spiral channel. The thickness of a heat absorption layer 11 is 400 microns, the thickness of a heat insulation layer 12 is 200 microns, the heat absorption layer 11, a support piece 13 and the heat insulation layer 12 are alternately distributed, wherein the thickness of the support piece 13 between the heat absorption layer 11 and the heat insulation layer 12 is 1000 microns, the width of the support piece 13 is 1.5mm, the thickness of the support piece 13 outside the heat insulation layer 12 is 800 microns, the width of the support piece is 2mm, an included angle between the support piece 13 and the vertical direction of an improved tubular airflow unit 10 with spiral channels is 80 degrees, 3 support pieces 13 are arranged between the heat absorption layer 11 and the heat insulation layer 12, and 3 spiral channels are formed; 3 supporting pieces 13 are arranged outside the heat insulation layer 12, and 3 spiral channels are formed between the heat insulation layer 12 and the forming paper after the heat insulation layer is wrapped by the forming paper.

Preparing a composite filter rod with 10mm diacetate fibers and 20mm repeated units of a spiral channel tubular airflow unit, and rolling and connecting the filter tip and the fragrance-producing base body together by using rolling and connecting equipment to obtain a cigarette product. Wherein the spiral channel tubular gas flow unit is located at the fragrance producing material end. Ordinary hollow-tube cigarette products of the same specification were prepared as controls. The cigarette smoking is simulated according to a cigarette smoking model specified in national standard YC/T29-1996, the temperature of the upstream end and the downstream end of the spiral channel tubular airflow unit and the control sample during cigarette smoking is detected by using a K-type thermocouple temperature detector, and the detection result is shown in Table 3.

TABLE 3 temperature measurement of mainstream smoke

The test data in table 3 clearly show that the flue gas temperature after passing through the spiral channel tubular gas flow unit is reduced by 71.0 c, which is 31.2 c lower than the temperature of the ordinary hollow tube under the same conditions.

Example 6: as shown in fig. 12, on the basis of example 5, a functional material is randomly added into 1 spiral channel between the heat absorbing layer 11 and the heat insulating layer 12, the functional material is a tobacco sheet strip with the thickness of 800 μm and the width of 5mm, the functional material is filled in an air flow channel cavity between the heat absorbing layer 11 and the heat insulating layer 12 in a spiral winding manner, the winding angle of the tobacco sheet in the spiral channel is consistent with the winding angle of the supporting member 13, namely, the included angle between the central line of the tobacco sheet and the longitudinal vertical line of the improved tubular air flow unit 10 with the spiral channel is 80 °. Meanwhile, functional materials are randomly added in 1 spiral channel between the heat insulation layer 12 and the forming paper, and the functional materials are Chinese herbal medicine particles with the particle size of 80 meshes.

Preparing a composite filter stick with 10mm diacetate fiber and 20mm repeated units of spiral channel tubular airflow units. And (4) rolling the filter tip and the fragrance producing base body together by using rolling equipment to obtain the cigarette product. Wherein the spiral channel tubular gas flow unit is located at the fragrance producing material end. The sample of example 5 was used as a control sample. Simulated smoking is carried out according to a cigarette smoking model specified in national standard YC/T29-1996, Cambridge filter discs are collected for GC-MS analysis, the components of the main stream smoke particulate matters of the two samples are compared, and the analysis result is shown in figure 13.

The data in the figure show that compared with the spiral channel airflow unit sample without adding the tobacco sheets and the Chinese herbal medicine particles, the airflow channel unit with the tobacco sheets and the Chinese herbal medicine particles obviously changes the chemical components of the main stream smoke of the tobacco product, and the contents of aldehydes and ketones, terpenes, heterocycles, benzene rings and phenols are obviously increased.

In addition to the above embodiment, the number of the spiral channels between the heat absorbing layer 11 and the heat insulating layer 12 is 1; the schematic diagram of the number of the spiral channels between the heat absorbing layer 11 and the heat insulating layer 12 is shown in fig. 14 and 15. When the number of the spiral channels is multiple, 1 spiral channel can be randomly selected to add the functional material, the number of the spiral channels can be selected to be less than that of the spiral channels, and all the spiral channels can be selected to be added.

The tubular airflow unit 10 with the spiral channel is prepared by adopting a spiral winding process, and the heat absorption layer 11 and the heat insulation layer 12 are spirally wound to form a tubular structure due to no gap; the support 13 is spirally wound between the heat absorbing layer 11 and the heat insulating layer 12 or the outermost layer of the tubular airflow unit with the spiral channel to form a spiral channel; the functional material 14 is distributed in the formed spiral channel in a spiral shape, and the functional material 14 is added when the improved tubular airflow unit 10 with the spiral channel is formed on line (namely, when the heat absorption layer 11, the heat insulation layer 12 and the support member 13 are integrally formed).

In addition to the situation of the given drawings, the application can also carry out any combination of the following materials according to the following requirements: the heat absorption layer 11 is made of a heat absorption material, and the heat absorption material comprises one or more of wood pulp fiber, polylactic acid, polypropylene and polyethylene glycol (the heat absorption material can efficiently absorb, store or transfer heat, so that the purpose of absorbing the temperature of the smoke at the first time is achieved). The heat insulation layer 12 is made of heat insulation material, and the heat insulation material comprises one or more of cotton fiber, fibrilia, silicate, graphite and cellulose paper. The functional material 14 is one or more of linear, strip, sheet or granular materials, and the heat insulation material can play a role in blocking temperature. The functional material 14 is one or more of cotton thread (linear), hemp thread (linear), cellulose strip (strip), tobacco sheet (sheet), starch granule (granular), activated carbon granule (granular), plant granule (granular) and gel granule (granular) (wherein the cotton thread, hemp thread and cellulose strip are high adsorption material, and can be used for loading fragrance by spraying or dip-coating liquid perfume on the high adsorption material, the tobacco sheet is a sheet formed by a paper making method, a dry method or a roller pressing method, the starch granule and the activated carbon granule are porous granular materials and have good adsorption effect, the plant granules such as Chinese herbal medicine granules and plant leaf granules have the fragrance and can also be used for loading fragrance, the gel granule is fragrance-loaded granule prepared by taking PEG as a raw material, the fragrance loading amount is large, and the phase change function can play a remarkable cooling effect at the same time, providing special functions of fragrance loading, adsorption or cooling and the like for the tubular airflow unit 10 with the spiral channel so as to improve the smoking quality of cigarettes; the functional material 14 is fixed in the spiral channel by an adhesive such as glue). During the addition of the functional material 14, the functional material 14 does not intersect (i.e., does not overlap) with the support 13, thereby avoiding variations in the circumference of the improved tubular gas flow unit 10 having a spiral passage or out-of-roundness of the improved tubular gas flow unit 10 having a spiral passage.

The parameters such as the size can be arbitrarily selected according to the following requirements: the width of the supporting piece 13 is at least 10% and less than 90% of the outer circumference of the tubular airflow unit 10 with the spiral channel (namely the circumference of the outermost layer of the tubular airflow unit 10 with the whole spiral channel), and the thickness is at least 1.5 times and less than 5 times of the thickness of the heat absorbing layer 11 (the supporting piece 13 is made of thicker wood pulp fiber, the thickness of the heat absorbing layer 11 is 70-430 μm, preferably 100-350 μm, the thickness of the heat insulating layer 12 is 70-350 μm, preferably 100-300 μm, the thickness of the supporting piece 13 is 105-2150 μm, preferably 300-2000 μm); the longitudinal vertical included angle between the central line of the supporting member 13 and the improved tubular airflow unit 10 with the spiral channel is greater than 0 degree and less than 90 degrees (excluding 0 degree and 90 degrees, the air flow path is short and close to a straight channel when the spiral angle is close to 0 degree, and the air flow path is long when the spiral angle is close to 90 degrees).

The tubular airflow unit 10 with spiral channels may also have an outer layer according to application requirements, and the outer layer is used to meet the performance requirements (such as hardness) of the tubular airflow unit 10 with spiral channels, and also to meet the appearance requirements of the tubular airflow unit 10 with spiral channels, so as to give the tubular airflow unit 10 with spiral channels a special brand appearance.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An improved tubular gas flow unit having a spiral channel, characterized by: comprises a heat absorbing layer (11) and a heat insulating layer (12) which are arranged from inside to outside, and also comprises a supporting piece (13): the support piece (13) is positioned between the heat absorbing layer (11) and the heat insulating layer (12) and spirally wound on the heat absorbing layer (11) to form a spiral channel; and/or the support (13) is positioned outside the heat insulation layer (12) and spirally wound to form a spiral channel.

2. The improved tubular gas flow unit with spiral channel of claim 1, wherein: the heat absorbing layer (11) and the heat insulating layer (12) are spirally rolled to form a tubular structure.

3. The improved tubular gas flow unit with spiral channel of claim 1, wherein: the heat absorption layer (11) is made of heat absorption materials, and the heat absorption materials comprise one or more of wood pulp fibers, polylactic acid, polypropylene and polyethylene glycol.

4. The improved tubular gas flow unit with spiral channel of claim 1, wherein: the heat insulation layer (12) is made of heat insulation materials, and the heat insulation materials comprise one or more of cotton fibers, fibrilia, silicate, graphite and cellulose paper.

5. The improved tubular gas flow unit with spiral channel of claim 1, wherein: functional materials (14) are added into the spiral channel and are distributed in a spiral shape.

6. The improved tubular gas flow unit with spiral channel of claim 1, wherein: the number of the spiral channels between the heat absorbing layer (11) and the heat insulating layer (12) is 1 or more: adhering a functional material (14) to the walls of the heat absorbing layer (11) and the heat insulating layer (12) in the spiral channel; or filling the functional material (14) in a spiral channel between the heat absorbing layer (11) and the heat insulating layer (12) in a spiral winding mode; the support (13) does not intersect the functional material (14);

the number of spiral channels formed by spirally winding the heat insulation layer (12) is 1 or more: the functional material (14) is bonded outside the heat insulating layer (12) in a spiral winding manner.

7. The improved tubular gas flow unit with spiral channel of claim 5, wherein: the functional material (14) is one or more of linear, strip, sheet or granular materials.

8. The improved tubular gas flow unit with spiral channel of claim 5, wherein: the functional material (14) is one or more of cotton thread, hemp thread, cellulose strip, tobacco sheet, starch granule, active carbon granule, plant granule and gel granule.

9. The improved tubular gas flow unit with spiral channel of claim 1, wherein: the central line of the supporting piece (13) and the longitudinal vertical included angle of the improved tubular airflow unit (10) with the spiral channel are larger than 0 degree and smaller than 90 degrees.

10. The improved tubular gas flow unit with spiral channel of claim 1, wherein: the width of the supporting piece (13) is at least 10% and less than 90% of the outer circumference of the tubular gas flow unit (10) with the spiral channel, and the thickness is at least 1.5 times and less than 5 times of the thickness of the heat absorbing layer (11).