阅读说明：本技术 加热卷烟烟具气路结构以及加热卷烟烟具 (Heating cigarette smoking set gas circuit structure and heating cigarette smoking set ) 是由 韩咚林 黄玉川 谢力 包毅 邓永 赵德清 郑怡 梁坤 史健阳 汤磊 于 2019-11-04 设计创作，主要内容包括：本发明涉及加热卷烟领域,尤其是一种加热卷烟烟具气路结构以及加热卷烟烟具。本发明提供了一种能够均匀预热空气且能有效降低外壁温度的加热卷烟烟具气路结构,包括内套管和外壁,所述内套管内设置有烟气发生腔,所述内套管嵌套在外壁内,所述内套管与外壁之间设置有进气通道,所述进气通道的进气口位于靠近烟气发生腔抽吸端的一侧,所述气体通道的出气口与烟气发生腔的进气端连通,所述进气通道内设置有湍流发生器。本发明采用对旋降温结构,通过形成双旋转气流,产生旋流强化了加热器器壁的降温效果,形成了温度场分布更为均匀的预热气流,该技术的应用使抽吸时烟气入口温度适宜,最大限度提升了热源利用率。(The invention relates to the field of heating cigarettes, in particular to a gas path structure of a heating cigarette smoking set and the heating cigarette smoking set. The invention provides a gas circuit structure of a heating cigarette smoking set, which can uniformly preheat air and effectively reduce the temperature of an outer wall. The invention adopts a counter-rotating cooling structure, generates rotational flow by forming double-rotating airflow, strengthens the cooling effect of the wall of the heater, forms preheated airflow with more uniform temperature field distribution, ensures proper temperature of a flue gas inlet during suction and furthest improves the utilization rate of a heat source.)

1. Heating cigarette smoking set gas circuit structure, including interior sleeve pipe (1) and outer wall (2), it takes place chamber (3) to be provided with the flue gas in interior sleeve pipe (1), interior sleeve pipe (1) nestification is in outer wall (2), be provided with inlet channel (4) between interior sleeve pipe (1) and outer wall (2), one side that is close to flue gas emergence chamber (3) suction end (6) is located in air inlet (5) of inlet channel (4), the inlet end intercommunication in chamber (3) takes place with the flue gas in gas channel's gas outlet, its characterized in that: a turbulence generator (7) is arranged in the air inlet channel (4).

2. The heated cigarette smoking article air passage structure of claim 1, wherein: and the air inlet (5) of the air inlet channel (4) is positioned on the outer wall (2).

3. The heated cigarette smoking article air passage structure of claim 1, wherein: turbulence generator (7) include two piece at least baffles (8), and all baffles (8) interval sets up in inlet channel (4) and separate into one section inlet channel (4) at least one torrent and take place the chamber, all is provided with air vent (9) on every baffle (8), and the projection of air vent (9) on two adjacent baffles (8) does not coincide.

4. The heated cigarette smoking article air passage structure of claim 3, wherein: the cross section of the air inlet channel (4) is circular or elliptical, and the cross section of the partition plate (8) is the same as that of the air inlet channel (4).

5. The heated cigarette smoking article air passage structure of claim 3, wherein: the partition plate (8) is in a grid shape, the total opening area of the vent holes (9) in the partition plate (8) accounts for 15% -40% of the area of the partition plate (8), and the area of a single vent hole (9) is smaller than 5% of the area of the whole partition plate (8).

6. The heated cigarette smoking article air passage structure of claim 5, wherein: the vent holes (9) on the grid-shaped partition plate (8) are in a thin stripe shape, a circular shape or a polygonal shape.

7. The heated cigarette smoking article air passage structure of claim 4, wherein: the vent holes (9) are distributed on the clapboard (8) in an axisymmetric mode.

8. The heated cigarette smoking article air passage structure of claim 4, wherein: the vent holes (9) on the partition plate (8) are in a thin stripe shape extending along the radial direction of the partition plate (8), the number of the vent holes (9) is not less than two, and the vent holes (9) are distributed on the partition plate (8) in an axial symmetry manner; the distribution density of the vent holes (9) of two adjacent partition plates (8) is different from the external tangent angle of the inner sleeve (1).

9. The heated cigarette smoking article air passage structure of claim 2, wherein: the baffle plate (8) is composed of at least two fan blades, and vent holes (9) are formed among the fan blades.

10. Heating cigarette smoking set, its characterized in that: a heated cigarette smoking article air passage structure comprising a heater according to any one of claims 1 to 9, the heater head (10) of the heater being disposed within the smoke generating chamber (3).

Technical Field

The invention relates to the field of heating cigarettes, in particular to a gas path structure of a heating cigarette smoking set and the heating cigarette smoking set.

Background

Articles in which a flavour-producing material containing tobacco components is heated at a temperature of around 350 ℃ rather than combusted are well known in the art and may be referred to as heated smoking articles which have a similar profile to conventional cigarettes and which release substances such as flavour components from the flavour-producing material by electrical or other heating means to produce a smokable aerosol and thereby avoid the production of significant quantities of harmful components by pyrolysis. Reduces the harm to human body and the pollution of environmental smoke while ensuring the satisfaction of smokers. Heated smoking articles require smoking articles that are electrically heated to achieve a desired smoking temperature. However, due to the high working temperature inside the smoking set, the temperature of the shell of the smoking set is too high, and the grip feeling temperature of the user is too high during the use process (generally, the user feels hot after the touch feeling temperature is more than 56 ℃).

Chinese patent publication No. CN104135581A, publication No. 2014.11.05, entitled aerosol generating device and system with improved air flow, discloses the following technical solutions: comprising a housing, a cavity provided with a heater, a second air flow channel extending from a distal end of the cavity to a mouthpiece portion, and a first air flow channel provided between the housing and the cavity. During smoking, air passes from the air inlet through the first airflow channel and then to the cavity to react with the smoking article, and the resulting smoke passes through the second airflow channel to the smoker. This technical scheme utilizes the motion of air at first air current way to carry out the heat exchange with the cavity, taken away partial heat and preheated the air, this heat that makes the accumulation on the shell is less, thereby has reduced smoking set shell temperature. Although the temperature of the shell can be reduced by adding the first air flow channel in the technical scheme, the first air flow channel is a straight channel, the air flows in the first air flow channel only in a laminar flow, and the air at the corner is not easy to flow, so that the air flowing through the first air flow channel is heated unevenly and cannot absorb heat well, and the gas which is remained all the time possibly exists in the first air flow channel, so that the local temperature of the shell is higher; meanwhile, the temperature of air entering the cavity is not uniform, and the reaction in the cavity is influenced.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a gas path structure of a cigarette heating smoking set, which can uniformly preheat air and effectively reduce the temperature of the outer wall.

The gas path structure for heating the cigarette smoking set comprises an inner sleeve and an outer wall, wherein a smoke generation cavity is arranged in the inner sleeve, the inner sleeve is nested in the outer wall, a gas inlet channel is arranged between the inner sleeve and the outer wall, a gas inlet of the gas inlet channel is positioned at one side close to a suction end of the smoke generation cavity, a gas outlet of the gas channel is communicated with a gas inlet end of the smoke generation cavity, and a turbulence generator is arranged in the gas inlet channel. The smoke generating cavity is used for placing and fixing the heating type smoking articles, a heating head of a heater is arranged in the smoke generating cavity, and the heating head can control the temperature to be at the required temperature. The inlet passage is typically formed by a gap between the inner sleeve and the outer wall, although it could be slotted or formed in both. The smoke-generating chamber has an air inlet end and a suction end oriented in the same direction as a conventional cigarette. The air flow direction of the invention is as follows: air enters the air inlet channel from the air inlet, passes through the turbulence generator in the air inlet channel, then enters the smoke generating cavity from the air outlet, and reacts with the heated smoking article in the smoke generating cavity to form smoke which enters the mouth of a smoker from the suction end. The turbulence generator mainly utilizes the structure of the turbulence generator to promote air to generate turbulence in the flowing process, and makes the heat exchange between the air and the air, between the air and the inner sleeve, between the air and the outer wall more sufficient by utilizing the turbulence, thereby avoiding excessive local accumulated heat and simultaneously enabling the air to be well preheated. The turbulence generator mainly changes the air flow path, such as blocking by a plurality of baffles, or changes the shape path of an air inlet channel, or guides the air to rotate by a spiral structure, and the detailed embodiment can be seen later.

Further, the air inlet of the air inlet channel is positioned on the outer wall. The air inlet may be one or more apertures in the outer wall.

Further, the turbulence generator comprises at least two partition plates, wherein all the partition plates are arranged in the air inlet channel at intervals and divide one section of the air inlet channel into at least one turbulence generation cavity, each partition plate is provided with a vent hole, and the projections of the vent holes on the two adjacent partition plates are not overlapped. The shape of the partition plate is matched with the cross-sectional shape of the air inlet channel, so that the partition plate plays a role in separation. Preferably, more than two turbulence generating chambers are provided. The number, shape and size of the vent holes are determined according to specific design so as to meet the requirements of different products. The projection direction refers to the axial direction of the smoking set, namely the direction of the main airflow, and the non-coincidence refers to the state that the shapes and/or positions are different enough to change the airflow path, and when a plurality of holes are arranged on the partition plate, the projections of all the holes are not coincident. The purpose of the misalignment of the projections of the vent holes on the two adjacent partition plates is to avoid the linear laminar flow of the airflow and realize the purpose of turbulent flow by changing the airflow path.

Further, the cross section of the air inlet channel is in a circular ring shape or an elliptical ring shape, and the cross section of the partition plate is the same as that of the air inlet channel. The shape of the air inlet channel is mainly determined by the shape of the heating cigarette smoking set, and the shape of the heating cigarette smoking set often determines the section shape of the air inlet channel.

Furthermore, the partition board is in a grid shape, the total area of the openings of the vent holes on the partition board accounts for 15% -40% of the area of the partition board, and the area of a single vent hole is less than 5% of the area of the whole partition board. The grid shape is that the clapboard is provided with vent holes according to the array. The large number of vent holes divides the airflow into multiple paths of airflows, and rotary airflows are formed when the airflows collide with each other.

Further, the vent holes on the grid-shaped partition board are in a thin stripe shape, a circular shape or a polygonal shape.

Further, the vent holes are distributed on the partition plate in an axisymmetric mode. The axis of symmetry is generally the axis of the smoking article and the symmetrical distribution provides a uniform distribution of airflow across the cross-section.

Furthermore, the vent holes on the partition board are in a thin stripe shape extending along the radial direction of the partition board, the number of the vent holes is not less than two, and the vent holes are distributed on the partition board in an axial symmetry manner; the distribution density of the vent holes of two adjacent partition plates is different from the outer tangent angle of the inner sleeve. The fine stripe-shaped vent holes can be in a diffusing shape or a spiral shape.

Further, the baffle plate is composed of at least two fan blades, and vent holes are formed among the fan blades.

Another technical problem to be solved by the present invention is to provide a heating cigarette smoking set capable of uniformly preheating air and effectively reducing the temperature of the outer wall.

The invention provides a heating cigarette smoking set, which comprises a heater and the gas path structure of the heating cigarette smoking set, wherein a heating head of the heater is arranged in a smoke generation cavity. The heater can adopt a combustion type heater or an electric heater, usually adopts the electric heater, if the portable smoking set is also provided with a battery, and the heating temperature is controlled by the vent hole temperature control module.

The invention has the beneficial effects that:

through set up turbulence generator on inlet channel, can make the air current that gets into the smoking set produce the whirl, break the state of laminar flow, form the torrent, this makes more air currents can with outer wall, interior sleeve pipe contact heat transfer, also can carry out the heat transfer between the air current simultaneously, just so can effectual reduction outer wall the temperature, promote user's use and experience. Meanwhile, through heat exchange, gas is preheated before entering the smoke generating cavity, and the temperature in the cavity is not obviously reduced when the gas enters the smoke generating cavity, so that the reaction temperature is effectively guaranteed, and a part of energy can be recycled through preheating of the air, so that the purpose of energy conservation is achieved, and the cruising ability of the portable smoking set is particularly effectively improved.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic view of an embodiment of the present invention in use

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a sectional view taken along line B-B of FIG. 1;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 1;

FIG. 6 is a schematic view of a second embodiment of the present invention;

FIG. 7 is a schematic view of an air path structure of a heated cigarette smoking set in accordance with a second embodiment of the present invention;

FIG. 8 is a schematic view of a first separator plate;

FIG. 9 is a schematic view of a second separator plate;

FIG. 10 is a schematic view of a third separator plate;

parts, positions and numbers in the drawings: the device comprises an inner sleeve 1, an outer wall 2, a smoke generating cavity 3, an air inlet channel 4, an air inlet 5, a suction end 6, a turbulence generator 7, a partition plate 8, a vent hole 9, a heating head 10 and a smoking article 11.

Detailed Description

The invention will be further explained with reference to the drawings, in which the direction of the arrows is the direction of the air flow and the circular arrows represent the generation of the swirling flow.

As shown in fig. 1, the smoke-generating device comprises an inner sleeve 1 and an outer wall 2, wherein a smoke-generating cavity 3 is arranged in the inner sleeve 1, the inner sleeve 1 is nested in the outer wall 2, an air inlet channel 4 is arranged between the inner sleeve 1 and the outer wall 2, an air inlet 5 of the air inlet channel 4 is positioned at one side close to a suction end 6 of the smoke-generating cavity 3, an air outlet of the air inlet channel is communicated with an air inlet end of the smoke-generating cavity 3, and a turbulence generator 7 is arranged in the air inlet channel 4. Turbulent flow is a flow state of fluid, when the flow velocity is increased to be very large (more than 3 m/s), the flow line is no longer clearly identifiable, the flow field has many small vortexes, laminar flow is destroyed, and adjacent flow layers not only slide but also mix to form turbulent flow, which is also called turbulent flow, turbulent flow or turbulent flow. The turbulence generator 7 of the present invention utilizes this principle to change the air flow path by narrowing the air intake passage 4, thereby forming turbulence. The turbulence generator 7 has a simple structure, and blocks the air inlet channel 4 by using a partition 8, a projection or a barrier, so that the air inlet channel 4 is locally narrowed, and the air flow direction is changed, so that the air flow speed is rapidly increased, the direction is changed, and turbulence is formed.

Referring to fig. 1 and 2, when a user sucks a smoking article 11, air enters the air inlet channel 4 from the air inlet 5, when the air passes through the turbulence generator 7, the speed and the direction of the air change, the air flow rotates and forms turbulence, at the moment, the heating head 10 works, the whole inner sleeve 1 is hot, the gas forming the turbulence just exchanges heat with the inner sleeve 1 sufficiently to achieve the preheating effect, the preheated gas enters the smoke generation cavity 3 to react with the smoking article 11, and the generated smoke enters the mouth of the smoker along the smoking article 11.

For ease of manufacture, the inlet 5 of the inlet passage 4 is located in the outer wall 2 as shown in figure 6. The direct trompil processing convenience on outer wall 2 need not to set up air inlet structure in addition, and the shape and the quantity in hole all can be decided according to the circumstances.

As a class of embodiments of the turbulence generator 7, as shown in fig. 1, the turbulence generator 7 includes at least two partition plates 8, all the partition plates 8 are disposed in the air inlet passage 4 at intervals and divide one section of the air inlet passage 4 into at least one turbulence generation cavity, each partition plate 8 is provided with a vent hole 9, and the projections of the vent holes 9 on two adjacent partition plates 8 are not overlapped. The mode is characterized in that the partition plates 8 are used for blocking airflow, a new airflow path is established through the vent holes 9 in the partition plates 8, the airflow suddenly passes through small holes, the flow velocity is increased, turbulence is generated in a turbulence generation cavity, and due to the fact that the projections of the vent holes 9 in two adjacent partition plates 8 are not coincident, the airflow cannot move linearly, but changes direction to form rotational flow, the rotational flow can enhance the heat exchange between the airflow and the airflow, between the airflow and the outer wall 2 and between the airflow and the inner sleeve 1, heat on the outer wall 2 can be taken away, the temperature of the outer wall 2 is reduced, meanwhile, a part of energy can be recovered from the preheated air, the energy consumption of a heater is reduced, and the purpose of saving energy is achieved.