Partitioned heating heating tube and smoking set thereof

Abstract

The utility model belongs to the technical field of smoking sets, and particularly relates to a heating tube with a partition heating function, which comprises a first heating function section, a second heating function section and a third heating function section from bottom to top, and the first heating function section, the second heating function section and the third heating function section are spiral surrounding rings which heat after being electrified and are arranged at equal intervals. The spiral distance of the second heating function section is larger than that of the third heating function section, and the spiral distance of the third heating function section is larger than that of the first heating function section. After the actual heating conditions of different positions are analyzed, the three different heating areas are arranged, the intervals of the spiral surrounding rings in the different heating areas are pertinently arranged, the intervals of the heating pipes are increased and then reduced from bottom to top, local overburning is avoided, meanwhile, the atomization time is prolonged, the stability of the atomization amount in the whole process can be guaranteed, and the atomization efficiency is improved. The mouth feel is close to the mouth feel at the atomization starting stage and the atomization ending stage, and the smoking experience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoking appliances, and particularly relates to a heating tube with zoned heating and a smoking appliance thereof. Background Art

[0002] In order to avoid the generation of toxic and harmful substances during tobacco combustion, in the prior art, a heat-not-burn device is used to heat and atomize tobacco. The heating tube is a commonly used heat-not-burn device. The heating tube is in a hollow cylindrical shape, and cylindrical tobacco is inserted and heated to be atomized. When the cylindrical tobacco is heated, the peripheral temperature is high and the central temperature is low. In order to ensure complete atomization at the center, the periphery is prone to overheating and charring. Therefore, the smoking experience of the existing heating tube needs to be improved.

[0003] In addition, the heating tube heats as a whole simultaneously, and the tobacco atomizes rapidly as a whole, resulting in a short effective time for generating aerosol and a poor use experience.

[0004] Therefore, in the prior art, two heating zones are arranged on the heating tube, and the two heating zones are controlled to heat in sequence. On the one hand, it can avoid too high local temperature, and on the other hand, it can prolong the atomization time. In the prior art, it is relatively common that the two heating zones are arranged diagonally. Although the heating time can be prolonged, the heating effect in the central part is poor and the atomization is incomplete.

[0005] In CN110313639A, the two heating zones are arranged symmetrically left and right, and the circuits in each heating zone are arranged vertically. The left and right sides of the cigarette are heated in sequence. This structure also has a poor heat accumulation effect, and the tobacco in the central part cannot be atomized completely, resulting in waste. In CN113367409A, the circuits are arranged in parallel in parallel. However, the control circuit for realizing zoned heating is complex, and the production yield of good products is relatively low.

[0006] In view of this, the utility model aims to provide a heating tube with zoned heating and a smoking appliance thereof, which has a simple circuit, a long atomization time, a uniform atomization amount throughout the use process, can adapt to cigarettes with different boiling points and different sizes, and improves the use experience. The heating tube of the utility model has three sections from bottom to top, namely a first heating functional section, a second heating functional section and a third heating functional section. Each section is a spiral winding circle with equal spacing, and the spiral winding circle in the middle section has a larger spacing, and the spacing at both ends is smaller. Summary of the Utility Model

[0007] One of the purposes of the present utility model is to provide a heating tube with zoned heating in view of the deficiencies of the prior art. The circuit of the heating tube is simple, the atomization time is long, the atomization amount is uniform throughout the use process, and it can adapt to cigarette sticks with different boiling points and different sizes, improving the use experience. The heating tube of the present utility model has three sections from bottom to top, namely a first heating functional section, a second heating functional section, and a third heating functional section. Each section is a spiral winding circle with equal spacing, and the spiral winding circle spacing in the middle section is larger, while the spacing at both ends is smaller.

[0008] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0009] A heating tube with zoned heating, from bottom to top, the heating tube includes a first heating functional section, a second heating functional section, and a third heating functional section. The first heating functional section, the second heating functional section, and the third heating functional section are all spiral winding circles that generate heat after being energized and have equal spacing. And the spiral spacing of the second heating functional section is greater than the spiral spacing of the third heating functional section, and the spiral spacing of the third heating functional section is greater than the spiral spacing of the first heating functional section.

[0010] As an improvement of the heating tube with zoned heating of the present utility model, the spiral winding circle is a circuit pattern or a metal wire obtained by printing or etching.

[0011] As an improvement of the heating tube with zoned heating of the present utility model, the spiral spacing of the second heating functional section is 1.1 - 2.5 times the spiral spacing of the first heating functional section. When the inner diameter of the heating tube is relatively large, in order to ensure the heating efficiency at the center, the spacing of the heating circuit (spiral spacing) of the second heating functional section cannot be too loose. Further preferably, the spiral spacing of the second heating functional section is 1.3 - 2 times the spiral spacing of the first heating functional section.

[0012] As an improvement of the heating tube with zoned heating of the present utility model, the spiral spacing of the third heating functional section is 1.1 - 1.5 times the spiral spacing of the first heating functional section.

[0013] As an improvement of the heating tube with zoned heating of the present utility model, the spiral spacing of the third heating functional section is 1.1 - 1.3 times the spiral spacing of the first heating functional section.

[0014] As an improvement of the heating tube with zoned heating of the present utility model, the spiral spacing of the third heating functional section is 0.5 - 0.9 times the spiral spacing of the second heating functional section.

[0015] As an improvement of the heating pipe for zoned heating of the utility model, each heating functional section is intermittently arranged. The three heating functional sections can be arranged continuously or discontinuously, and preferably the three heating functional sections are discontinuous. When the three heating functional sections are discontinuous, a cold bridge is formed at the discontinuity, reducing the heat radiation of different functional sections, and the effect of distinguishing zoned heating is better.

[0016] As an improvement of the zoned heating heating tube of the utility model, the height of each heating functional section can be reasonably set to be equal or similar. Preferably, the heights of the first heating functional section, the second heating functional section and the third heating functional section are equal.

[0017] In summary, the utility model provides a heating tube with a simple circuit, a long atomization time, and a uniform atomization amount during the whole use process, which can adapt to cigarettes of different boiling points and different sizes, and improve the use experience. The heating tube of the utility model has three sections from bottom to top, namely the first heating function section, the second heating function section, and the third heating function section, each section is a spiral winding with equal spacing, wherein the spacing of the spiral windings in the middle section is larger, and the spacing at both ends is smaller.

[0018] The smaller the spacing of the spiral windings, the longer the heating circuit in the heating area, the greater the resistance, and the greater the heat generation. When in use, the first heating functional section and the second heating functional section heat up at the same time, and then the second heating functional section and the third heating functional section heat up at the same time.

[0019] The lowest section is the first heating functional section. Since cold air enters through the first heating functional section, the first heating functional section needs to heat the cold air and tobacco, which requires a larger heating capacity. Therefore, the heating circuits in the first heating functional section are relatively dense, that is, the spacing between the spiral windings is small.

[0020] The air entering the second heating functional section is the air heated by the first heating functional section and already has a certain temperature. The tobacco in the middle section is preheated to a certain extent by heat radiation. In order to avoid overburning, the heat generation of the second heating functional section needs to be smaller than that of the first heating functional section, and the heating circuit needs to be relatively loose. Therefore, the spacing between the spiral windings of the second heating functional section is greater than that of the first heating functional section.

[0021] The third heating functional section is at the top. The heating medium in this area has been preheated for a certain period of time and has a certain initial temperature. The required calorific value is between the first heating functional section and the second heating functional section. Therefore, the heating line spacing (spiral spacing) of the third heating functional section is slightly smaller than that of the second heating functional section and larger than that of the first heating functional section. If the spacing of the third heating functional section is equivalent to that of the first heating functional section, it is also easy to cause burning. If the spacing of the third heating functional section is the same as that of the second heating functional section, since the heating amount of the second heating functional section is small and the preheating degree of the third heating functional section is small, the calorific value of the third heating functional section is not enough to completely atomize all the tobacco at the top.

[0022] The utility model also discloses a smoking device using the above-mentioned heating tube, and the smoking device also includes a control PCB program, which is set to heat only the first heating function section and the second heating function section in the first stage of atomization, so that all the tobacco in the lower section and part of the tobacco in the middle section are atomized. In the second stage of atomization, only the second heating function section and the third heating function section are heated, so that the remaining tobacco in the middle section and all the tobacco in the upper section are atomized. The larger heating pitch (spiral pitch) can also avoid overburning of the tobacco in the middle section during the second atomization stage.

[0023] Beneficial Effects

[0024] After analyzing the actual heating conditions at different locations, the utility model sets three different heating zones, and specifically sets the spacing of the spiral windings in different heating zones. The spacing of the heating tube increases and then decreases from bottom to top, which avoids local overburning while extending the atomization time, and can ensure the stability of the atomization amount during the whole process. The taste at the beginning and end of atomization is close, which improves the smoking experience. In addition, the circuit setting is simple, the control method is simple, easy to produce, and the yield rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the expansion of the heating tube in the utility model.

[0026] Among them, 1-the third heating functional section; 2-the second heating functional section; 3-the first heating functional section; 4-the lead welding point. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0029] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0030] Embodiment 1

[0031] As Figure 1 shown, this embodiment provides a heating tube, which successively has three sections from bottom to top, namely a first heating functional section 1, a second heating functional section 2, and a third heating functional section 3. The three sections are arranged discontinuously, and the pitch of the spiral winding turns within each section is equal. Moreover, the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 are all spiral winding turns that generate heat after being energized. The pitch ratio of the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 is 1:2:1.3. The heights of the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 are not equal. The spiral winding turns are printed circuit patterns. 4 in the figure is the lead solder joint.

[0032] Embodiment 2

[0033] This embodiment provides a heating tube, which successively has three sections from bottom to top, namely a first heating functional section 1, a second heating functional section 2, and a third heating functional section 3. The three sections are arranged discontinuously, and the pitch of the spiral winding turns within each section is equal. Moreover, the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 are all spiral winding turns that generate heat after being energized. The pitch ratio of the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 is 1:1.8:1.2. The heights of the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 are equal, and the spiral winding turns are metal wires.

[0034] Embodiment 3

[0035] This embodiment provides a heating tube, which successively has three sections from bottom to top, namely a first heating functional section 1, a second heating functional section 2, and a third heating functional section 3. The three sections are arranged discontinuously, and the pitch of the spiral winding turns within each section is equal. Moreover, the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 are all spiral winding turns that generate heat after being energized. The ratio of the pitches of the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 is 1:1.6:1.1. The first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 have the same height, and the spiral winding turns are circuit patterns obtained by printing.

[0036] Embodiment 4

[0037] This embodiment provides a heating tube, which successively has three sections from bottom to top, namely a first heating functional section 1, a second heating functional section 2, and a third heating functional section 3. The three sections are arranged discontinuously, and the pitch of the spiral winding turns within each section is equal. Moreover, the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 are all spiral winding turns that generate heat after being energized. The ratio of the pitches of the first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 is 1:2.2:1.4. The first heating functional section 1, the second heating functional section 2, and the third heating functional section 3 have unequal heights, and the spiral winding turns are metal wires.

[0038] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A heating tube for zone heating, characterized in that: From bottom to top, the heating tube includes a first heating functional segment, a second heating functional segment and a third heating functional segment. The first heating functional segment, the second heating functional segment and the third heating functional segment are all equidistant spiral winding circles that generate heat after being energized, and the spiral pitch of the second heating functional segment is greater than the spiral pitch of the third heating functional segment, and the spiral pitch of the third heating functional segment is greater than the spiral pitch of the first heating functional segment.

2. The zoned heating heating tube according to claim 1, characterized in that: The spiral winding is a printed or etched circuit pattern or metal wire.

3. The zoned heating heating tube according to claim 1, characterized in that: The spiral pitch of the second heating functional section is 1.1-2.5 times the spiral pitch of the first heating functional section.

4. The zoned heating heating tube according to claim 3, characterized in that: The spiral pitch of the second heating functional section is 1.3-2 times the spiral pitch of the first heating functional section.

5. The zoned heating heating tube according to claim 1, characterized in that: The spiral pitch of the third heating functional section is 1.1-1.5 times the spiral pitch of the first heating functional section.

6. The zoned heating heating tube according to claim 5, characterized in that: The spiral pitch of the third heating functional section is 1.1-1.3 times the spiral pitch of the first heating functional section.

7. The zoned heating heating tube according to claim 5, characterized in that: The spiral pitch of the third heating functional section is 0.5-0.9 times the spiral pitch of the second heating functional section.

8. The zoned heating heating tube according to claim 1, characterized in that: Each heating function section is set intermittently.

9. The zoned heating heating tube according to claim 1, characterized in that: The first heating functional section, the second heating functional section and the third heating functional section have the same height.

10. A smoking device using the heating tube according to any one of claims 1 to 9, characterized in that: The heating program of the smoking device is set so that when the heating tube heats up, the first heating function section and the second heating function section are heated first, and then the second heating function section and the third heating function section are heated.

Images