Cooling pipe for cigarette

Abstract

The invention belongs to the technical field of cigarette auxiliary materials, and particularly relates to a cigarette cooling pipe which is composed of a central supporting column and a groove plate arranged on the central supporting column in a sleeving mode, or composed of a peripheral supporting pipe and a groove plate embedded in the peripheral supporting pipe, or formed by wrapping the central supporting column and the groove plate arranged on the central supporting column in a sleeving mode through the peripheral supporting pipe. A plurality of air holes are distributed in the surface of the groove plate. According to the cooling pipe for the cigarette, the smoke temperature can be rapidly reduced; the material of the cooling pipe has good heat absorption capability, and the addition of the inorganic salt and the metal oxide can accelerate the conduction rate of heat in the flue gas to the cooling pipe, so that the cooling capability is improved. In addition, due to temporary blocking of the trough plate, the flue gas forms turbulent flow on the two sides of the trough plate, irritant substances in the flue gas continuously collide and settle, and the concentration of the irritant substances in the flue gas can be reduced. By means of the cooling pipe for the cigarette, the smoking comfort of the cigarette can be well improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cigarette accessories, relates to filter rods, and particularly relates to a temperature-reducing tube for cigarettes. Background Art

[0002] Tobacco products are pursuing higher and higher levels of smoking comfort. The main factors affecting the smoking comfort of tobacco products include the temperature of the smoke, the concentration of the smoke, and the content of irritating substances in the smoke. The content of irritating substances in the smoke is determined by the tobacco leaves themselves and can only be achieved by adjusting the leaf group formula. Moreover, there are many types of irritating substances in the smoke, and it is extremely difficult to reduce them. The smoke concentration is related to the overall flavor quality of the cigarette. If the smoke concentration is too low, the cigarette flavor is insufficient, and the smoking comfort and satisfaction are relatively poor.

[0003] Most of the irritating substances in the smoke are macromolecular substances. When the smoke is continuously cooled in the filter rod, the macromolecular substances will coagulate and settle due to the cooling; however, most of the aroma-forming substances are small molecules, which are not easy to settle and will not reduce the smoke phase concentration due to the cooling of the smoke. Therefore, the simplest way to improve smoking comfort is to reduce the temperature of the smoke. Summary of the Invention

[0004] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to disclose a temperature-reducing tube for cigarettes, which can reduce the temperature and the concentration of irritating substances of the smoke on the premise of reducing the flavor quality of the smoke and improve the comfort during smoking.

[0005] Technical Solution

[0006] A temperature-reducing tube for cigarettes is composed of a central support column and a groove plate sleeved thereon, or composed of an outer peripheral support tube and a groove plate embedded therein, or composed of an outer peripheral support tube wrapping the central support column and the groove plate sleeved thereon. Among them, a plurality of ventilation holes are distributed on the surface of the groove plate.

[0007] In a preferred embodiment of the present invention, the number of the central support columns is one or more.

[0008] Further, the diameter of the central support column is 0.5 - 3 mm.

[0009] In a preferred embodiment of the present invention, the groove plate is circular, and the number of layers is one or more.

[0010] Further, the thickness of the groove plate is 0.2 - 2.0 mm, and the aperture of the ventilation holes on the groove plate is 0.2 - 2.5 mm.

[0011] Further, when the number of layers of the groove plate is 2 or more, the ventilation holes provided on the surfaces of each layer of the groove plate penetrate or do not penetrate each other.

[0012] Further, the aperture diameters of the ventilation holes on the surfaces of adjacent slot plates gradually decrease layer by layer in the flue gas flow direction.

[0013] In a preferred disclosed example of the present invention, the wall thickness of the outer peripheral support tube is 0.3 - 1.5 mm.

[0014] In a preferred disclosed example of the present invention, the material of the tobacco cooling tube is polylactic acid or silica gel, and polylactic acid is preferred.

[0015] In a preferred disclosed example of the present invention, inorganic salts or metal oxides are sprayed or melt - blended on the surface of the tobacco cooling tube.

[0016] Further, the inorganic salt is one or more of calcium carbonate, copper sulfate or magnesium sulfate, and calcium carbonate is preferred.

[0017] Further, the metal oxide is one or more of iron oxide, copper oxide or aluminum oxide, and aluminum oxide is preferred.

[0018] Furthermore, the addition amount of the inorganic salt or metal oxide is 0.1 - 15% of the mass of the tobacco cooling tube.

[0019] The tobacco cooling tube disclosed by the present invention becomes a cooling tube composite filter rod after being conventionally compounded with the filter rod described in the prior art.

[0020] According to the Venturi effect, when the air flow passes through the small holes, the flow rate increases and the temperature decreases. In the tobacco cooling tube disclosed by the present invention, a plurality of ventilation holes are provided on the surface of the slot plate. When the flue gas passes through, due to the Venturi effect, the temperature of the flue gas is reduced, and macromolecular substances continuously settle, thereby improving the comfort of smoking. In order to improve the cooling efficiency of the cooling tube, inorganic salts or metal oxides are added to the material.

[0021] Beneficial effects

[0022] The tobacco cooling tube disclosed by the present invention can quickly reduce the temperature of the flue gas; the material of the cooling tube has good heat absorption capacity. The addition of inorganic salts and metal oxides can accelerate the rate of heat conduction from the heat in the flue gas to the cooling tube, improving the cooling capacity. In addition, due to the temporary blockage of the slot plate, turbulence is formed on both sides of the slot plate for the flue gas, and the irritating substances in the flue gas continuously collide and settle, which can reduce the concentration of irritating substances in the flue gas. Therefore, the tobacco cooling tube disclosed by the present invention can preferably improve the comfort of cigarette smoking. Brief description of the drawings

[0023] Figure 1 . Schematic diagram of a single - layer central support column - type cooling tube;

[0024] Figure 2 . Schematic diagram of a multi - layer central support column - type cooling tube;

[0025] Figure 3 . Schematic diagram of single-layer outer peripheral support tube column type cooling tube;

[0026] Figure 4 . Schematic diagram of multi-layer outer peripheral support tube column type cooling tube;

[0027] Figure 5 . Schematic sectional view of multi-layer outer peripheral support tube column type cooling tube;

[0028] Figure 6 . Schematic diagram of multi-layer central-peripheral support type cooling tube;

[0029] Figure 7 . Schematic sectional view of multi-layer central-peripheral support type cooling tube;

[0030] Among them, each component is 1 - central support column, 2 - groove plate, 3 - ventilation holes, 4 - outer peripheral support tube. Specific implementation mode

[0031] The present invention will be described in detail below in conjunction with embodiments, so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0032] Embodiment 1

[0033] A cooling tube composite filter rod, the filter rod composite structure is "cellulose acetate filter rod (10 mm) + cooling tube (10 mm) + cellulose acetate filter rod (10 mm)", wherein the cooling tube is a single-layer central support column type cooling tube ( Figure 1 the structure shown), and the aperture of the ventilation hole is 0.5 mm.

[0034] Embodiment 2

[0035] A cooling tube composite filter rod, the filter rod composite structure is "cellulose acetate filter rod (10 mm) + cooling tube (10 mm) + cellulose acetate filter rod (10 mm)", wherein the cooling tube is a multi-layer central support column type cooling tube ( Figure 2 the structure shown), the groove plate is 2 layers, the aperture of the ventilation hole in the near tobacco segment is 1.2 mm, and the aperture of the ventilation hole in the near lip segment is 0.6 mm.

[0036] Embodiment 3

[0037] A cooling tube composite filter rod, the filter rod composite structure is "cellulose acetate filter rod (10 mm) + cooling tube (10 mm) + cellulose acetate filter rod (10 mm)", wherein the cooling tube is a single-layer outer peripheral support tube column type cooling tube ( Figure 3 the structure shown), and the aperture of the ventilation hole of the groove plate is 0.5 mm.

[0038] Embodiment 4

[0039] A cooling tube composite filter rod, the filter rod composite structure is "cellulose acetate filter rod (10mm) + cooling tube (10mm) + cellulose acetate filter rod (10mm)", wherein the cooling tube is a multi-layer outer peripheral support tube column type cooling tube ( Figure 4 as shown in the structure), the slot plate is 2 layers, the aperture of the ventilation holes in the section near the tobacco is 1.2mm, and the aperture of the ventilation holes in the section near the lip is 0.6mm.

[0040] Example 5

[0041] A cooling tube composite filter rod, the filter rod composite structure is "cellulose acetate filter rod (10mm) + cooling tube (10mm) + cellulose acetate filter rod (10mm)", wherein the cooling tube is a multi-layer central-peripheral support type cooling tube ( Figure 5 as shown in the structure), the slot plate is 2 layers, the aperture of the ventilation holes in the section near the tobacco is 1.2mm, and the aperture of the ventilation holes in the section near the lip is 0.6mm.

[0042] After the above 5 kinds of cooling tube composite filter rods are connected to cigarettes, their average flue gas temperature is detected; then a common filter rod with the same draw resistance is used as a control sample and connected to cigarettes, and the average flue gas temperature is detected.

[0043] The test results are as follows in the table.

[0044]

[0045] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the description of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A cooling pipe for cigarettes, comprising a central support column (1) and a groove plate (2) sleeved thereon, or a peripheral support tube (4) and a groove plate (2) embedded therein, or a peripheral support tube (4) wrapping the central support column (1) and the groove plate (2) sleeved thereon, characterized in that: A plurality of air holes (3) are distributed on the surface of the slot plate (2).

2. The cooling tube for cigarettes according to claim 1, characterized in that: The number of the central support column (1) is one or more, and the diameter thereof is 0.5 to 3 mm.

3. The cooling tube for cigarettes according to claim 1, characterized in that: The groove plate (2) is circular and has one or more layers; the thickness is 0.2 to 2.0 mm, and the diameter of the groove plate air holes (3) is 0.2 to 2.5 mm.

4. The cooling tube for cigarettes according to claim 3, characterized in that: When the number of the groove plates (2) is 2 or more, the air holes (3) provided on the surface of each layer of the groove plates penetrate each other or do not penetrate each other.

5. The cooling tube for cigarettes according to claim 4, characterized in that: The apertures of the air holes (3) on the surfaces of adjacent slot plates are gradually reduced in accordance with the direction of smoke flow.

6. The cooling tube for cigarettes according to claim 1, characterized in that: The wall thickness of the peripheral support tube (4) is 0.3 to 1.5 mm.

7. The cooling tube for cigarettes according to any one of claims 1 to 6, characterized in that: The material of the cigarette cooling tube is polylactic acid or silica gel, preferably polylactic acid.

8. The cooling tube for cigarettes according to claim 7, characterized in that: Inorganic salts or metal oxides are sprayed or melt-blended on the surface of the tobacco cooling tube.

9. The cooling tube for cigarettes according to claim 8, characterized in that: The inorganic salt is one or more of calcium carbonate, copper sulfate or magnesium sulfate, preferably calcium carbonate; the metal oxide is one or more of iron oxide, copper oxide or aluminum oxide, preferably aluminum oxide; the addition amount of the inorganic salt or metal oxide is 0.1-15% of the mass of the tobacco cooling tube.

10. A cooling tube composite filter rod, characterized in that: The cooling tube composite filter rod is formed by combining the cooling tube for cigarettes described in any one of claims 1 to 9 with a filter rod.

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