Axial semi-partitioned heating tube, electronic atomization device and heating method

Abstract

The present invention belongs to the field of heating technology, and specifically relates to an axially semi-partitioned heating tube, an electronic atomization device including the same, and a heating method. The heating tube comprises: a heating base tube (1); a first heating resistor layer (2), a second heating resistor layer (3), and a third heating resistor layer (4) arranged on the heating base tube (1); the first heating resistor layer (2) is arranged in the lower section, and the second heating resistor layer (3) and the third heating resistor layer (4) are arranged side by side in the upper section. When the atomization device is preheated and the first half of the puffing, the heating tube supplies power to the first heating resistor layer (2) and the second heating resistor layer (3) to generate heat, and the cigarette contacted by the heating tube here will quickly heat up to a temperature that can be smoked; in the second half of the puffing, the first heating resistor layer (2) and the third heating resistor layer (4) are supplied with power to atomize the remaining aerosol of the cigarette. The use of the heating tube of the present invention can improve the consistency and stability of the smoke volume before and after puffing.

Description

Technical Field

[0001] The present invention belongs to the field of heating technology, and in particular relates to an axial semi-partitioned heating tube, an electronic atomization device comprising the same, and a heating method. Background Art

[0002] There are generally two types of heating tubes in existing electronic atomization devices, one is one-stage overall heating, and the other is two-stage or multi-stage heating along the axial direction. One-stage overall heating requires heating the entire heat-not-burn cigarette, and the preheating time is long; and because the entire heat-not-burn cigarette is baked, the puffing time is short; because the entire heat-not-burn cigarette is always baked and heated, the aerosol content of the heat-not-burn cigarette will become lower and lower, resulting in the subsequent aerosol content being too low, the consistency of atomization is poor, and the taste is affected. Although the preheating time of the existing multi-stage heating tube is shorter than that of the one-stage heating tube, there is still much room for improvement in the consistency of the atomized cigarette before and after use.

[0003] In addition, when the central heating element and the circumferential heating tube heat the smoking section of the cigarette, there is a problem of uneven atomization of the entire smoking section. The part of the smoking section that is in direct contact with the heating element or heating tube has the best heat transfer effect and the most complete atomization, and even carbonization due to overheating occurs; while the part of the smoking section that is far away from the heating element or heating tube is prone to incomplete atomization due to insufficient heat transfer.

[0004] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0005] A first aspect of the present invention provides an axial semi-partitioned heat pipe, the heat pipe comprising:

[0006] Heating base tube 1;

[0007] A first heating resistor layer 2, a second heating resistor layer 3 and a third heating resistor layer 4 independently arranged on or inside the heating base tube 1;

[0008] The first heating resistor layer 2 is arranged at the lower section of the heating base tube 1 , and the second heating resistor layer 3 and the third heating resistor layer 4 are arranged side by side at the upper section of the heating base tube 1 .

[0009] Preferably, the first heating resistor layer 2 is circularly surrounding the lower section of the heating base tube 1, and the second heating resistor layer 3 and the third heating resistor layer 4 are symmetrically arranged and are semicircularly surrounding the upper section of the heating base tube 1 respectively.

[0010] The first heating resistor layer 2 basically covers the circumferential outer surface of the lower section of the heating base tube 1 .

[0011] In this article, "upper" and "lower" are relative terms. The upper section of the heating substrate tube 1 refers to the section close to the mouthpiece of the heating substrate tube 1 when the heating substrate tube 1 is used in the heating non-burning smoking device. The lower section of the heating substrate tube 1 refers to the section away from the mouthpiece of the heating non-burning smoking device when the heating substrate tube 1 is used in the heating non-burning smoking device.

[0012] The sum of the lengths of the upper section of the heat-generating base tube 1 and the lower section of the heat-generating base tube 1 is less than or equal to the total length of the heat-generating base tube 1 .

[0013] The length of the upper section of the heat generating base tube 1 is greater than, less than or equal to one half of the total length of the heat generating base tube 1 .

[0014] The length of the lower section of the heat generating base tube 1 is less than, greater than or equal to half of the total length of the heat generating base tube 1 .

[0015] The length of the upper section of the heating substrate tube 1 is equal to the length of the smoking section of the heating-not-burning cigarette, and the upper section of the heating substrate tube 1 can be adjusted according to the length of the smoking section of the heating-not-burning cigarette.

[0016] Preferably, the first heating resistor layer 2 and the second heating resistor layer 3 are arranged in series to form a first heating zone, and the first heating resistor layer 2 and the third heating resistor layer 4 are arranged in series to form a second heating zone. During operation, the first heating zone and the second heating zone generate heat at different times.

[0017] The above series connection is realized by electrical connection between the ends of each heating resistor layer.

[0018] Preferably, the first heating resistor layer 2 , the second heating resistor layer 3 and the third heating resistor layer 4 are independently arranged on the inner surface, the outer surface or the inside of the heating base tube 1 .

[0019] The heating resistor layer may be arranged on the heating base tube 1 in any suitable form, such as printing, sintering, etc.

[0020] Preferably, the first heating resistor layer 2 , the second heating resistor layer 3 and the third heating resistor layer 4 are heating tracks.

[0021] Of course, the heating resistor layer may also be in other forms such as a heating resistor sheet.

[0022] Preferably, the heating trajectory includes at least one straight line segment and at least one broken line segment.

[0023] Preferably, the straight line segment is parallel to the axis of the heat-generating base tube 1, and the folded line segment has multiple folded lines that form a certain angle with the straight line segment. More preferably, the certain angle is 90 degrees.

[0024] Of course, the heating track can also be in other shapes, and bend and extend on the heating base tube 1. For example, the heating track is bent in a continuous side "U" shape, "V" shape, "Ω" shape, "X" shape, etc., or extends according to a specific bending rule.

[0025] The heating track may be a single heating resistance wire or multiple heating resistance wires.

[0026] Preferably, the heating tube also includes a first electrode pin 5 connected to the end of the first heating resistor layer 2, a second common electrode pin 6 connected to the three heating resistor layers at the same time, a third electrode pin 7 connected to the end of the second heating resistor layer 3 and a fourth electrode pin 8 connected to the end of the third heating resistor layer 4.

[0027] Preferably, the inner diameter of the upper section of the heat-generating base tube 1 is greater than the inner diameter of the lower section of the heat-generating base tube 1;

[0028] That is, the inner diameter of the upper section of the heating substrate tube 1 is equal to or slightly larger than the outer diameter of the smoking section of the heat-not-burn cigarette. The inner diameter of the lower section of the heating substrate tube 1 is smaller than the outer diameter of the smoking section of the heat-not-burn cigarette, so that the smoking section of the heat-not-burn cigarette is confined inside the upper section of the heating substrate tube 1;

[0029] Alternatively, a limiting member is provided between the upper section of the heat generating base tube 1 and the lower section of the heat generating base tube 1, and the limiting member limits the inner diameter of the heat generating base tube 1 here to be smaller than the inner diameter of the upper section of the heat generating base tube 1. For example, the limiting member is an inner flange protruding radially relative to the inner wall of the heat generating base tube 1, or the limiting member is a partition mesh plate provided between the upper section and the lower section of the heat generating base tube 1.

[0030] Of course, the limiting member can be any form of component, as long as the smoking section of the heat-not-burn cigarette is limited to the upper section of the heating base tube 1 to prevent it from falling to the lower section of the heating base tube 1.

[0031] The limiting member is resistant to high temperatures, and its material can be the same as that of the heating base tube 1 .

[0032] Preferably, the heating base tube 1 is made of a rigid heat-conducting material, such as metal or ceramic.

[0033] The heat generating base tube 1 and the first heat generating resistor layer 2 , the second heat generating resistor layer 3 and the third heat generating resistor layer 4 are insulated from each other.

[0034] If the heating base tube 1 is made of metal, an insulating layer is provided between the heating base tube 1 and the heating resistor layer.

[0035] An insulating layer or a protective layer, such as a glass glaze layer, may also be provided on the outer surface of the heating tube.

[0036] The heating resistor layers of the present invention also have a temperature measurement function, and the heating and temperature measurement are integrated without the need for additional temperature measurement equipment.

[0037] The second aspect of the present invention provides an electronic atomization device, which includes the axial semi-partitioned heating tube, and the upper section of the heating base tube 1 is arranged near the mouthpiece of the electronic atomization device. The mouthpiece of the electronic atomization device can also be in the form of a cigarette insertion port.

[0038] The third aspect of the present invention provides a heating method, which uses the axial semi-partitioned heating tube described in any one of the first aspects of the present invention. The heating method includes a first heating stage and a second heating stage. In the first heating stage, power is supplied to the first heating resistor layer 2 and the second heating resistor layer 3 to make them generate heat. In the second heating stage, power is supplied to the first heating resistor layer 2 and the third heating resistor layer 4 to make them generate heat.

[0039] Preferably, the heating temperature of the first heating resistor layer 2 is 200-300 degrees Celsius to fully heat the air in the lower section of the heating tube, forming a hot air flow to flow into the smoking section of the heated non-combustion cigarette so that the tobacco material therein is evenly heated.

[0040] The heating temperature of the second heating resistor layer 3 and the third heating resistor layer 4 is lower than 180 degrees Celsius. At this temperature, the smoking section does not generate aerosol. The second heating resistor layer 3 and the third heating resistor layer 4 only play the role of preheating the smoking section. First, they can prevent the smoke generated by the hot air flow heating the smoking section from condensing too quickly. Second, they can work together with the hot air flow to heat the smoking section so that it is fully heated and atomized.

[0041] During operation, the substances in the smoking section of the heated non-combustible cigarette are fully and evenly atomized to generate smoke through the combined effects of the heating of the first heating resistor layer 2 and the preheating of the second heating resistor layer 3 / the third heating resistor layer 4.

[0042] The different heating temperatures of the first heating resistor layer 2 , the second heating resistor layer 3 and the third heating resistor layer 4 can be achieved by using heating wires with different resistivities.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. When the electronic atomization device is preheated and the first half of the puffing is performed, the heating tube of the present invention supplies power to the first heating resistor layer 2 and the second heating resistor layer 3 to generate heat. Therefore, the cigarette in contact with the heating tube at the axially corresponding positions of the first heating resistor layer 2 and the second heating resistor layer 3 will heat up rapidly to reach a temperature that can be smoked. In the second half of the puffing, the first heating resistor layer 2 and the third heating resistor layer 4 are supplied with power to atomize the remaining aerosol in the cigarette for the user to inhale, which can improve the consistency and stability of the smoke before and after the puffing and avoid uneven smoke volume before and after the cigarette is smoked.

[0045] 2. In the preferred technical solution, the inner diameters of the upper and lower sections of the heating tube of the present invention are different or a stopper is provided between the two sections. The upper section of the heating tube is used to accommodate the smoking section for heating non-combustion cigarettes, and the lower section of the heating tube is used to heat the air entering from the smoking device to form a hot air flow. This method of heating with hot air flow heats the material in the smoking section more evenly.

[0046] When the electronic atomization device is preheated and the first half of the puff is inhaled, the first heating resistor layer 2 and the second heating resistor layer 3 are powered to generate heat. Due to the combined effect of the hot air flow and the preheating of the second heating resistor layer 3, the cigarette in contact with the heating tube corresponding to the axial direction of the second heating resistor layer 3 will quickly heat up to a temperature that can be smoked, and the half of the smoking section corresponding to the second heating resistor layer 3 is fully atomized to generate aerosol. However, the third heating resistor layer 4 is not preheated, so the other half of the smoking section corresponding to the third heating resistor layer 4 only has hot air flow passing through it, and aerosol cannot be fully generated.

[0047] In the second half of the puff, the first heating resistor layer 2 and the third heating resistor layer 4 are powered to fully atomize the remaining aerosol in the other half of the smoking section corresponding to the third heating resistor layer 4 for the user to inhale. Therefore, the present invention can improve the consistency and stability of the smoke before and after the puff, and avoid uneven smoke volume before and after the puffing process of the cigarette. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a three-dimensional diagram of an axial semi-partitioned heating tube.

[0049] Figure 2 This is a schematic diagram of the expansion of the heating resistor layer on an axial semi-partitioned heating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] 1. Heating base tube, 2. First heating resistor layer, 3. Second heating resistor layer, 4. Third heating resistor layer, 5. First electrode pin, 6. Second common electrode pin, 7. Third electrode pin, 8. Fourth electrode pin. DETAILED DESCRIPTION

[0052] The present invention is further described below by way of examples, but is not limited to these examples. Experimental methods without specific conditions in the examples are usually carried out under conventional conditions and conditions described in the manual, or under conditions recommended by the manufacturer. The general equipment, materials, reagents, etc. used can be obtained from commercial sources unless otherwise specified. The raw materials required in the following examples and comparative examples are all commercially available. Example

[0053] An axial semi-partitioned heating tube comprises: a heating base tube 1, a first heating resistor layer 2, a second heating resistor layer 3, a third heating resistor layer 4, a first electrode pin 5, a second common electrode pin 6, a third electrode pin 7, and a fourth electrode pin 8.

[0054] The first heating resistor layer 2 is circumferentially surrounding the lower section of the heating base tube 1 , and the second heating resistor layer 3 and the third heating resistor layer 4 are symmetrically arranged and are semicircularly surrounding the upper section of the heating base tube 1 .

[0055] The sum of the upper section of the heating base tube 1 and the lower section of the heating base tube 1 is the total length of the heating base tube 1. The length ratio of the upper section of the heating base tube 1 and the lower section of the heating base tube 1 is 3:2. A limiting member (not shown in the accompanying drawings) is provided between the upper section and the lower section of the heating base tube 1. Specifically, the limiting member is an inner flange protruding radially inward relative to the inner wall of the heating base tube 1. The upper section of the heating base tube 1 is used to accommodate the smoking section of the heat-not-burn cigarette. The lower end of the smoking section abuts against the limiting member.

[0056] The first heating resistor layer 2 , the second heating resistor layer 3 and the third heating resistor layer 4 are all heating tracks, and are independently arranged on the outer surface of the heating base tube 1 .

[0057] The upper end of the first heating resistor layer 2 and the lower end of the second heating resistor layer 3 are connected through the second common electrode pin 6, so that the first heating resistor layer 2 and the second heating resistor layer 3 are arranged in series to form a first heating zone. The upper end of the first heating resistor layer 2 and the lower end of the third heating resistor layer 4 are connected through the second common electrode pin 6, so that the first heating resistor layer 2 and the third heating resistor layer 4 are arranged in series to form a second heating zone. When the heating tube is working, one of the first heating zone and the second heating zone is used for heating.

[0058] The lower end of the first heating resistor layer 2 is connected to the first electrode pin 5 as an external power source. The upper end of the second heating resistor layer 3 is connected to the third electrode pin 7 as an external power source. The upper end of the third heating resistor layer 4 is connected to the fourth electrode pin 8 as an external power source.

[0059] During operation, the first electrode pin 5 is used, and the third electrode pin 7 and the fourth electrode pin 8 are used selectively, so that the first heating area and the second heating area generate heat at different times. At this time, the first heating resistor layer 2 is a common heating resistor layer.

[0060] The heating track includes a plurality of straight line segments and a plurality of broken line segments. The straight line segments are parallel to the axis of the heating base tube 1, and the broken line segments have a plurality of broken lines that are 90 degrees to the straight line segments.

[0061] Specifically, the heating track may be a single heating resistance wire.

[0062] The heating base tube 1 is made of ceramic.

[0063] Figure 1 This is a three-dimensional diagram of the axially semi-partitioned heating tube of Example 1.

[0064] Figure 2 This is a schematic diagram of the heating resistor layer (the first heating resistor layer 2, the second heating resistor layer 3 and the third heating resistor layer 4) on the axial semi-partitioned heating tube of Example 1. The above heating resistor layer basically covers the entire outer surface of the heating tube. In addition, the positions of the first electrode pin 5, the second common electrode pin 6, the third electrode pin 7 and the fourth electrode pin 8 are schematically shown.

Claims

1. An axial semi-partitioned heating tube, characterized in that: The heating tube comprises: A heating base tube (1); A first heating resistor layer (2), a second heating resistor layer (3) and a third heating resistor layer (4) independently arranged on or inside the heating base tube (1); Wherein, the first heating resistor layer (2) is arranged at the lower section of the heating base tube (1), and the second heating resistor layer (3) and the third heating resistor layer (4) are arranged side by side at the upper section of the heating base tube (1); The inner diameter of the upper section of the heating base tube (1) is greater than the inner diameter of the lower section of the heating base tube (1); Alternatively, a limiting member is provided between the upper section of the heating base tube (1) and the lower section of the heating base tube (1); The first heating resistor layer (2) is circumferentially arranged around the lower section of the heating base tube (1), and the second heating resistor layer (3) and the third heating resistor layer (4) are symmetrically arranged and are respectively semicircularly arranged around the upper section of the heating base tube (1); The inner diameter of the upper section of the heating substrate tube (1) is larger than the outer diameter of the smoking section of the heat-not-burn cigarette, and the inner diameter of the lower section of the heating substrate tube (1) is smaller than the outer diameter of the smoking section of the heat-not-burn cigarette; The upper section of the heating base tube (1) is used to accommodate the smoking section of the heat-not-burn cigarette, and the lower section of the heating base tube (1) is used to heat the air entering from the smoking device to form a hot air flow.

2. The axial semi-partitioned heating pipe according to claim 1, characterized in that: The first heating resistor layer (2) and the second heating resistor layer (3) are arranged in series to form a first heating zone, and the first heating resistor layer (2) and the third heating resistor layer (4) are arranged in series to form a second heating zone. During operation, the first heating zone and the second heating zone generate heat at different times.

3. The axial semi-partitioned heating pipe according to claim 2, characterized in that: The first heating resistor layer (2), the second heating resistor layer (3) and the third heating resistor layer (4) are independently arranged on the inner surface, the outer surface or the interior of the heating base tube (1).

4. The axial semi-partitioned heating tube according to claim 1, characterized in that: The first heating resistor layer (2), the second heating resistor layer (3) and the third heating resistor layer (4) are heating tracks.

5. The axial semi-partitioned heating pipe according to claim 4, characterized in that: The heating trajectory includes at least one straight line segment and at least one broken line segment.

6. The axial semi-partitioned heating pipe according to claim 1, characterized in that: The heating tube further comprises a first electrode pin (5) connected to the end of the first heating resistor layer (2), a second common electrode pin (6) connected to the three heating resistor layers at the same time, a third electrode pin (7) connected to the end of the second heating resistor layer (3), and a fourth electrode pin (8) connected to the end of the third heating resistor layer (4).

7. An electronic atomization device, characterized in that: The electronic atomization device comprises the axial semi-partitioned heating tube according to any one of claims 1 to 6, and the upper section of the heating base tube (1) is arranged close to the mouthpiece of the electronic atomization device.

8. A heating method, characterized in that: Using the axial semi-partitioned heating tube according to any one of claims 1 to 6, the heating method comprises a first heating stage and a second heating stage. In the first heating stage, power is supplied to the first heating resistor layer (2) and the second heating resistor layer (3) to generate heat. In the second heating stage, power is supplied to the first heating resistor layer (2) and the third heating resistor layer (4) to generate heat.

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