WO2015070725A1

WO2015070725A1 - Heating-type low-temperature cigarette and manufacturing method thereof

Info

Publication number: WO2015070725A1
Application number: PCT/CN2014/090470
Authority: WO
Inventors: 黄争鸣
Original assignee: 黄争鸣
Priority date: 2013-11-12
Filing date: 2014-11-06
Publication date: 2015-05-21
Also published as: CN103549657A

Abstract

A heating-type low-temperature cigarette, and manufacturing method thereof; a low-temperature heat source consists of a vacuum heat pipe (1-4, 2-3) and a combustion chamber (1-8, 2-8), the combustion chamber (1-8, 2-8) being used to generate heat, and the heat pipe (1-4, 2-3) being used to conduct heat; the heat absorption segment of the heat pipe (1-4, 2-3) is received in the combustion chamber (1-8, 2-8), and the heat release segment of the heat pipe (1-4, 2-3) is wrapped by or filled with shredded tobacco (1-3, 2-4); a movable slider (1-7, 2-7) is disposed between the air outlet hole (1-6, 2-6) of the combustion chamber (1-8, 2-8) and the air inlet hole (1-5, 2-5) of the shredded tobacco (1-3, 2-4) to alternately control the combustion inside the combustion chamber (1-8, 2-8) and the air required for smoking, avoiding the concurrence of combustion and smoking to prevent the combustion exhaust gas from being taken in by a smoker; when a heat source device and low-temperature shredded tobacco are manufactured into a detachable and separated type, the heating-type low-temperature cigarette can completely replace a traditional cigarette, because the separated cigarette can still be combusted and smoked when necessary. The heat source device is efficient and safe, and has low cost, and the combination of the heat source device and the low-temperature cigarette satisfies the requirements of various cigarette consumer groups.

Description

Heating type low temperature cigarette and preparation method thereof

Technical field

The present invention relates to a heated low temperature cigarette, and a method of making such a cigarette.

Background technique

Cigarettes have been produced and consumed for more than 500 years, and cigarettes have been in existence for more than 130 years since they entered China in the second half of the 19th century. For centuries, the way people smoke cigarettes has not changed in essence. After igniting cigarettes, they enjoy their smoke by burning with open flames or dark fires (ie, smoldering). At present, there are more than 300 million smokers in China, and the production and consumption of cigarettes ranks first in the world.

However, smoking is harmful to health. The traditional method of burning and smoking not only adversely affects the body of the smoker, but also the smoke and exhaust gas generated by the burning of tobacco pollute the environment, forcing people who do not smoke to passively smoke. With the concern about passive smoking, environmental tobacco smoke has become a major issue in the public debate on smoking and health issues, prompting most countries in the world to introduce laws prohibiting smoking in public places. Environmental tobacco smoke consists mainly of sidestream smoke emitted by burning cigarettes and mainstream smoke residues exhaled by smokers. The flue gas sucked from the filter end of the cigarette during suction is called mainstream smoke, and the flue gas which is released from the combustion end and diffused directly into the environment through the cigarette paper is called sidestream smoke. Therefore, reducing sidestream smoke is one of the main ways to reduce ambient smoke.

The easiest and probably the only way to completely eliminate sidestream smoke is to not burn cigarettes, such as e-cigarettes, cigarettes, snuff, chewing tobacco, etc. currently on the market. Although the latter does not have the release of sidestream smoke, it has a large difference from the smoking components of traditional burning cigarettes, and the market acceptance is low.

Can you produce a new type of cigarette that does not produce sidestream smoke but is no different from traditional consumer ingredients? The study found that the nicotine, tobacco, nicotine and other ingredients in the tobacco used for smoking cigarettes do not need to be burned to the tobacco, but only when the temperature in the tobacco reaches a certain range (about 200 ° C - 350 ° C). It will be released, burning tobacco not only causes the precipitation of a large number of harmful components, but the higher temperature of the tobacco actually detracts from the smoke components required by the smoker. Therefore, if the active ingredients such as nicotine and smog in tobacco are volatilized by continuous low-temperature heating of the shredded tobacco instead of high-temperature burning, the release of harmful substances can be greatly reduced, and the generation of sidestream smoke can be eliminated. And the smoker spits out the harmful effects in the exhaust gas. The score will also be significantly reduced, and it will have little effect on the taste and consumption habits of the smokers. People can even ignite the cigarettes for smoking. This heated cryogenic cigarette will likely overturn the public's traditional understanding of the relationship between smoking and health, revolutionizing cigarette production and consumption.

The heat source is probably the main obstacle to the large number of such low-temperature cigarettes that have not been available so far, because the required cut tobacco is the same as the traditional smoke-absorbing cut tobacco. This heat source is capable of continuously heating the cigarette shreds during the smoking phase, and the heating temperature must reach a certain range. Some people make fine carbon (or other combustibles) into a mandrel, and then wrap the shredded tobacco outside the mandrel. The third material layer with high melting point but good thermal conductivity is sandwiched between the mandrel and the interface of the shredded tobacco. (Copper or aluminum film), igniting the carbon rod when smoking, and providing heat to the tobacco by its smoldering (non-open flame combustion). The biggest shortcoming of this kind of heat source is that the carbon monoxide (CO) and carbon dioxide (CO2) gas generated by the carbon rod smoldering will be sucked into the lungs together with the smoke, because the smoldering of the carbon rod must have air and smoke. Air must also enter the tobacco. If the mandrel work (smoldering) and the smoke suction are not alternated, that is, the mandrel does not smoke when the mandrel is in operation, and the mandrel does not smolder when the flue gas is sucked, then inhalation of CO and CO2 gas is inevitable. Another possibility is to use electric heating to embed the resistance wire in the mandrel to heat the tobacco. Although electric heating does not produce CO and CO2 gas, it faces the problem of power supply: the use of external power supply is inconvenient for smokers; the use of self-contained power supply requires powerful battery power, not only the bulk of the cigarette, the heavy weight, but also the high cost. .

The heat pipe is by far the most efficient heat transfer device. It is a method of vacuuming the inside of a seamless pipe (a tube or other cross-sectional tube) to fill a liquid, solid or liquid-solid mixture, called a heat-conducting medium, and then sealing the ends of the casing. A more general heat pipe refers to a system in which a cavity is filled with a heat-conducting medium, which is vacuumed and sealed to form a closed system. The heat transfer medium gathering section is called the heat absorption section of the heat pipe, and the non heat absorption section can be called the heat release section of the heat pipe. Heating the shell of the heat absorption section, melting the heat transfer medium in the tube and vaporizing the vaporized medium, and the vaporized medium carries a large amount of heat energy to quickly fill the space inside the heat pipe, prompting the temperature of the heat pipe shell of the heat release section to rise instantaneously, and realizing the outer tube The medium is heated, and at the same time, the vaporous heat transfer medium is condensed to a liquid or solid state by cooling of the medium outside the tube, thus reciprocatingly circulating. If the endothermic section is at the lower and the exothermic section is above, the condensed heat transfer medium can return to the endothermic section by gravity alone. This heat pipe is called a gravity heat pipe. Otherwise, it is necessary to place a porous liquid absorbing material in the tube, and the condensed heat conductive medium is sent back to the heat absorbing section by adsorption. It is not difficult to see that the ordinary gravity heat pipe has a simple processing process and low cost.

Summary of the invention

One of the technical problems to be solved by the present invention is to provide a safe, efficient and low-cost heat source for Production of heated low temperature cigarettes.

The second technical problem to be solved by the present invention is to provide a method for manufacturing such a heated low temperature cigarette.

The technical solution adopted by the present invention to solve the above technical problem is: a heating type low temperature cigarette comprising a filter, a heating device, a shredded tobacco, a heat insulating layer, an outer casing and the like, wherein the heating device is mainly composed of a heat pipe and a combustion chamber, The combustion chamber is used for heat generation, and the heat pipe is used for heat conduction. After the heat absorption section of the heat pipe is placed in the combustion chamber to absorb heat, the heat is transmitted to the tobacco through the heat release section of the heat pipe to achieve heating.

On the basis of the above scheme, a plugging conversion device, such as a slider, is provided between the air outlet of the combustion chamber and the air inlet of the shredded tobacco, see 1-7 in Fig. 1a and 2-7 in Fig. 2a, or any Other devices with similar functions are used to alternately control the air outlet in the combustion chamber and the intake air in the tobacco. When the slider moves up, the air inlet of the combustion chamber is opened to realize heating of the heat pipe. At this time, the intake hole of the tobacco is slipped. When the block is blocked, the smoking air will not be carried out. When the slider moves down, the intake port of the tobacco is opened to achieve suction, and the air outlet of the combustion chamber is closed to stop the combustion and heat generation, thereby achieving combustion heating and cigarettes. The suction is not synchronized, and the exhaust gas such as CO and CO2 which are prevented from being burned in the combustion chamber is sucked by the cigarette smoker.

On the basis of the above solution, a partition is arranged in the combustion chamber to separate the heat absorption section of the heat pipe from the heat release section, and the exhaust gas in the combustion chamber is prevented from passing through the heat release section of the heat pipe, see FIG. 1a and FIG. 1b. And Figure 1c.

On the basis of the above solution, the combustion chamber is provided with a lighter ignition device, which is preferably synchronized with the opening device for opening the combustion chamber air outlet, for example, synchronously with the slider in FIG. 1a and FIG. 2a, but It is also possible to ignite after opening the air outlet of the combustion chamber. Once the air outlet of the combustion chamber is blocked, for example, the slider is moved down into place, the lighter will be automatically extinguished, and the heat absorption section of the heat pipe is heated by the burning and baking of the lighter. The fuel tank of the lighter is located at the lower part of the combustion chamber and is composed of one or more independent fuel tanks for storing the fuel required for the burning of the lighter. The fuel in each fuel tank needs to be ignited by the lighter at least once. It can be said that the lighter can only exhaust one fuel tank after one ignition, and control the burning time of the lighter after one ignition by rationally filling the fuel to ensure that the heat pipe can work safely and avoid the dry burning of the heat pipe.

Based on the above solution, the combustion chamber is filled with wood chips, paper sheets, cotton yarn, carbon materials, combustible ice, solid alcohol, coal, candles, gunpowder, petroleum, rayon or any other combustible material. a flammable substance composed of a combination thereof, see Fig. 1b, Fig. 2b, after igniting the flammable substance by means of a match, a lighter, a frictional fire and any other burning species, heating the heat absorbing section of the heat pipe, or The combustion chamber is filled with chemical raw materials, and the heat absorption of the heat pipe is realized by chemical reaction exotherm The heating of the section, the insulation layer in the combustion chamber can ensure that the heat of the heat pipe can be heated for a while after the fuel is extinguished.

Further, an electric heating device may be disposed in the combustion chamber, and heating of the heat absorption section of the heat pipe is realized after the power is turned on. The power source that is connected may be an external power source or a self-contained battery, and the battery may be placed at the time. Below the combustion chamber or below the combustion chamber, ie in the fuel tank of Figures 1a, 2a.

The heat pipe heat absorption section in the combustion chamber may also be completely heated by combustion and baking of an external fire source, and the combustion chamber may not even have a surrounding wall, and the air hole sealing device may not be needed, see FIG. 1c and FIG. 2c.

Based on the above scheme, the heating type low temperature cigarette can be processed by one of the following two methods:

A. Core heating cigarette: After the columnar heat pipe is processed, an infusible baffle is fixed between the heat absorption section and the heat release section of the heat pipe, and the tobacco is wrapped outside the heat release section of the heat pipe, and the cross-sectional size after wrapping is The outer shape of the baffle is flush. Then, the outer casing with the thermal insulation layer is wrapped around the heat absorption section of the shredded tobacco and the heat pipe. The material of the outer casing in the tobacco section and the heat absorption section of the heat pipe may be the same or different, and the outer casing material may be different. The insulation layer may not be included in the middle, but it is preferable to have a heat insulating function in the cladding, so that the smoker can hold the cigarette by fingers, and the outer casing has no less than two rows of holes along the ring direction, and the lower row of holes is located in the heat pipe. In the endothermic section, the upper row of holes is located in the tobacco section, wherein the outer casing and the baffle of the heat absorption section constitute a combustion chamber space, and the filter is fixed in a plane flush with the tobacco at the upper end of the outer casing, and the outer casing of the opening is opened. The surface is arranged with a plugging conversion device such as a movable slider. When the slider moves down, the lower row of holes is closed, the upper row of holes is opened, the slider is moved up and down, the lower row of holes is opened, and the upper row of holes is blocked, and the inside of the combustion chamber is closed. Can be filled with flammable substances, also The hot material can be filled, the electric heating device can be arranged, the lighter device can be placed, and the fuel tank required for the lighter is arranged below the combustion chamber, as shown in Fig. 1a, Fig. 1b and Fig. 1c, respectively.

B. Externally heated cigarette: a concave heat pipe is processed, and at least one intake pipe is disposed outside the heat pipe to penetrate the inner and outer walls of the heat pipe and is sealed and fixed, and the tobacco in the groove of the heat pipe is flush with the upper side of the heat pipe, and the filter is matched with The upper end of the heat pipe and the shredded tobacco is fixed, and the groove outer casing preferably has a section of heat insulation for the fingers of the sucker to be clamped, and then the combustion chamber is fixed below the heat pipe, and one or more air outlet holes are opened in the ring direction above the combustion chamber. A blocking conversion device such as a movable sliding block is arranged on the heat pipe section and the outer casing of the combustion chamber, and all the air inlet holes on the side of the heat pipe can be blocked when the slider is moved upward, and the air outlet hole of the combustion chamber is opened, and the slider is opened. The shifting function is reversed. It will block all the air outlets of the combustion chamber and open the air inlet holes on the side of the heat pipe. The combustion chamber can be filled with combustible materials, or it can be filled with hot materials for students, or electric heating devices can be installed. Arranging a lighter device and arranging the fuel tank required for the lighter below the combustion chamber, as shown in Figure 2a, Figure 2b, Figure 2c.

The heating device and the shredded tobacco in the above-mentioned heating type low-temperature cigarette can also be independent of each other, that is, the heating device (including the heat pipe, the combustion chamber and the necessary fuel tank) and the cigarette can be assembled with each other (with the appropriate size), wherein The heating of the shredded tobacco will be realized by one of a columnar (see Fig. 3b, Fig. 3c, Fig. 3d) and a concave (see Fig. 4b, Fig. 4c, Fig. 4d) heat pipe, and the preformed cigarette is inserted into the heating device during suction. Inside the heat pipe. In other words, the shredded tobacco and the filter are combined into a single cigarette, see Figures 3a, 4a, and the heat pipe, combustion chamber, outer casing, slider and possibly the ignition and fuel tank constitute separate heating means. Therefore, if a core heating device is used, the cigarette must be made in the form of a hollow cylindrical shell, as shown in Fig. 3a; and if an external heating device is used, the cigarette is in the form of a solid cylinder, which is almost indistinguishable from the conventional cigarette. If a separate core heating structure is used, the insulating layer may also be disposed outside the cigarette (Fig. 3a), and the outer casing corresponding to the heat pipe exothermic section of the heating device may be removed, see Fig. 3c, which is more convenient to assemble. When the outer shell of the lower part of the tobacco is to be opened with an air inlet. The advantage of this type of separation is that only a small amount of heat source device is required in a box of cigarettes, and even cigarettes and heat source devices are separately sold. If necessary, the cigarette itself can still be sucked by combustion like conventional cigarettes.

The beneficial effects of the invention are:

1. The heat source device based on the heat pipe is efficient, safe and low in cost, and provides an ideal heat source for the heating type low temperature cigarette. Since the heat pipe can uniformly radiate heat on the surface of the entire heat release section, efficient heating of the tobacco can be realized; The operation of the combustion chamber is not synchronized with the suction of the flue gas, ensuring that the exhaust gas released during combustion is not sucked into the body by the aspirator; the small heat pipe required in the heating device is also inexpensive to process.

2, the heat source device and the cigarette are processed into a separate type, it can be applied to almost all consumer groups of cigarettes, they can choose to insert the cigarette into the heat source device for more healthy non-combustion low temperature suction, or choose the traditional lit cigarette The way of burning and smoking.

DRAWINGS

Figure 1a is a schematic view of a core heated cigarette of the present invention.

Fig. 1b is a schematic view of another core heating cigarette according to the present invention.

Figure 1c is a schematic view of still another core heating cigarette of the present invention.

Figure 2a is a schematic view of an externally heated cigarette of the present invention.

Figure 2b is a schematic view of another externally heated cigarette of the present invention.

Figure 2c is a schematic view of still another externally heated cigarette of the present invention.

Figure 3a is a schematic view of a cigarette branch of a separate core heated cigarette of the present invention.

Figure 3b is a schematic view of a heating device for a separate core heated cigarette of the present invention.

Figure 3c is a schematic view of still another heating device for the separate core heating cigarette of the present invention.

Fig. 3d is a schematic view showing still another heating device of the separated core heating cigarette of the present invention.

Figure 4a is a schematic view of a cigarette branch of a separate externally heated cigarette of the present invention.

Figure 4b is a schematic view of a heating device for a separate externally heated cigarette of the present invention.

Figure 4c is a schematic view of still another heating device for the separate externally heated cigarette of the present invention.

Figure 4d is a schematic view of still another heating device of the separate externally heated cigarette of the present invention.

Description of the numbers in the drawings

1-1-filter 1-2-outer shell with insulation

1-3-cut tobacco 1-4-column heat pipe

1-5-cut tobacco inlet hole 1-6-combustion chamber outlet

1-7-slider 1-8-combustion chamber with insulation

1-9-fuel tank 1-10-combustible material containing chemically reactable heat generating material and electric heating device

2-1-filter 2-2-encapsulated shell with insulation

2-3- concave heat pipe 2-4-cut tobacco

2-5-cut tobacco intake pipe 2-6-combustion chamber vent

2-7-slider 2-8-combustion chamber with insulation

2-9-fuel tank 2-10-combustible material containing chemically reactable heat generating material and electric heating device

detailed description

Example 1

It adopts 6mm seamless copper tube with wall thickness of 1.0mm and tube length of 110mm. It is filled with thermal conductivity mA-A under vacuum condition, and the filling volume is 226mm ³ , which is about 18mm tube height. Then the two ends of the tube are welded and sealed to form a cylinder. a gravity heat pipe, and then a copper circular baffle having an outer diameter of 14 mm, an inner diameter of 6 mm, and a thickness of 1 to 1.5 mm is welded to the outer surface of the heat pipe 20 mm from one end thereof, and further, a metal casing having an outer diameter of 15 mm and a height of 60 mm is used. The lighter is fixed to the outer surface of the circular plate. The thickness of the lighter is 0.5mm. The lighter is divided into two parts in the height direction. The upper part is a concave shell. The inner groove is 40mm high and the inner diameter is 14mm. The lower part is arranged with no flint or nozzle. The other space is a fuel tank, which stores compressed liquid butane. The burner nozzle is placed in the center of the casing. There are 8 circular holes in the ring direction 5 mm away from the upper end of the concave casing. The diameter of the hole is 3 mm. An annular slider is arranged on the outer side of the concave shell, and the slider is moved down to the set position, and all 8 round holes can be blocked, and the lighter in the combustion chamber will be automatically extinguished due to lack of air, and the slider is moved upwards. Ignition of the lighter.

Subsequently, the prepared shredded tobacco suitable for low-temperature heating is wrapped in the upper part of the heat pipe to form a tobacco rod having an inner diameter of 6 mm and an outer diameter of 13 mm, but at the top end of the heat pipe, the shredded tobacco constitutes a solid cylinder with a height of 5 mm, and further, outside the tobacco rod. The surface is wrapped with thermal insulation paper, and the height is flush with the upper surface of the tobacco rod. The thickness of the wrapping layer is 1 mm, so that the outer diameter is the same as the outer diameter of the combustion chamber, and the wrapping layer is ensured to be impervious to air.

At the lower end of the wrap, 5 mm from the circular baffle, there are 4 venting circular holes in the circumferential direction, penetrating the wrapped insulation paper, the venting hole diameter is 5mm, and it must be ensured that the ring slider can move up to 4 The venting holes are well sealed.

Finally, a filter having a diameter of 15 mm and a height of 35 mm was fixed to the upper end of the tobacco rod and the insulating paper wrap, and the resulting cigarette was as shown in Fig. 1a.

After the heating type low temperature cigarette is burned for a period of time by the lighter, the smoker feels that the tobacco has been heated to a sufficient temperature from the upper insulation paper layer, and then opens the tobacco inlet hole to start the suction. If the smoke is insufficient, then the smoke is renewed. Ignite the lighter to heat the tobacco, and so on, until the smoke in the tobacco is exhausted.

Example 2

It adopts 5mm seamless stainless steel tube with wall thickness of 0.5mm and tube length of 100mm. It is filled with thermal conductivity MW-A under vacuum condition, the filling amount is 201mm ³ , that is, about 16mm column height, and then the two ends of the tube are welded and sealed to form a cylinder. a gravity heat pipe, then, a stainless steel circular baffle having an outer diameter of 14 mm, an inner diameter of 5 mm, and a thickness of 1 mm is welded to the outer surface of the heat pipe 18 mm from one end thereof, and further, a stainless steel pipe segment having an outer diameter of 14.6 mm, an inner diameter of 14 mm, and a height of 35 mm is further formed. It is fixed with the outer surface of the circular plate to form a combustion chamber. The upper part is uniformly opened at a distance of 5 mm from the baffle with four outlet holes, the diameter of the circular hole is 5 mm, and then an annular slider is arranged outside the combustion chamber casing. Move down to the set position, the four round holes can be completely blocked, the combustion chamber will not be able to burn due to lack of air, and the inner wall of the combustion chamber is coated with a layer of asbestos insulation layer with a layer thickness of 1 mm.

Turn the combustion chamber upside down, and put a bundle of cotton fiber into the bottom of each hole from the bottom to the bottom of the combustion chamber The opening of the part is pulled out and fixed, and the four cotton fiber bundles are pulled apart from each other as much as possible. Then, the four outlet holes are sealed, and the pre-formed solid alcohol solution is poured into the combustion chamber from the bottom opening to be solidified, and the exposed is cut off. The fiber blocks the bottom of the combustion chamber.

Subsequently, the prepared tobacco shreds suitable for low-temperature heating are wrapped in the upper part of the heat pipe to form a tobacco rod having an inner diameter of 5 mm and an outer diameter of 13 mm, but at the top end of the heat pipe, the tobacco is a solid cylinder with a height of 5 mm, and further, outside the tobacco column. The surface is wrapped with thermal insulation paper, and the height is flush with the upper surface of the tobacco rod. The thickness of the wrapping layer is 0.8 mm, so that the outer diameter is the same as the outer diameter of the combustion chamber, and the wrapping layer is ensured to be impervious to air.

Finally, a filter having a diameter of 14.6 mm and a height of 35 mm was fixed to the upper end of the tobacco rod and the insulating paper wrap, and the resulting cigarette was as shown in Fig. 1b.

Before sucking the cigarette, the push-up slider blocks the tobacco inlet, applies a match or a lighter to ignite the bundle of cotton fibers exposing the air outlet of the combustion chamber, and then ignites the solid alcohol in the combustion chamber, and burns the heat absorption section of the heat pipe. Heating, when it is felt from the insulation paper layer that the tobacco has been heated to a sufficient temperature, push down the slider to extinguish the burning of the alcohol, and at the same time open the intake hole of the tobacco to start pumping. If the smoke is insufficient, push up the slider. Re-ignite the alcohol and reciprocate until the smoke in the tobacco is exhausted.

Example 3

It adopts 5mm seamless titanium alloy tube with wall thickness of 0.5mm and tube length of 100mm. It is filled with thermal conductivity mA-A under vacuum condition, and the filling amount is 201mm ³ , that is, about 16mm column height, and then the two ends of the tube are welded and sealed. Cylindrical gravity heat pipe, then, the aluminum alloy circular baffle with outer diameter 14mm, inner diameter 5mm and thickness 1mm is fixed to the outer surface of the heat pipe 18mm from one end of the heat pipe, and then the aluminum alloy with outer diameter 15mm, inner diameter 14mm and height 30mm The pipe section is fixed to the outer surface of the circular plate to form a combustion chamber. The upper part is uniformly opened at a distance of 5 mm from the baffle with four outlet holes, and the diameter of the circular hole is 4 mm. The inner wall of the combustion chamber is coated with a layer of asbestos insulation layer. 2mm.

Subsequently, the prepared shredded tobacco suitable for low-temperature heating is wrapped on the upper part of the heat pipe to form a tobacco rod having an inner diameter of 5 mm and an outer diameter of 13 mm, but at the top end of the heat pipe, the shredded tobacco constitutes a solid cylinder with a height of 5 mm, and further, outside the tobacco rod The surface is wrapped with insulation paper and the height is flush with the upper surface of the tobacco rod. The thickness is 1.0mm, so that its outer diameter is the same as the outer diameter of the combustion chamber, and it ensures that the wrap is tightly airtight.

At the lower end of the wrapper, 5 mm from the circular baffle is equidistantly opened in the circumferential direction with 4 venting holes, penetrating the wrapped insulation paper, the diameter of the venting hole is not less than 3mm, and then fixing the filter with a diameter of 15mm and a height of 35mm. To the upper end of the tobacco column and the insulation paper wrap.

Before smoking the cigarette, the flame ignited by a match or a lighter is used to grill the lower end of the heat pipe in the combustion chamber (the heat absorption section). When the tobacco layer is heated to a sufficient temperature, the smoke is removed after the flame is removed. If you feel the smoke is not enough, ignite the match or lighter to re-bake, and then reciprocate until the smoke in the tobacco is exhausted. When necessary, consumers can also directly ignite the end of the cigarette and consume cigarettes in the traditional way of burning.

In this design, each cigarette has an added weight of about 8 grams due to the heating device.

Example 4

Two stainless steel pipe segments with lengths of 180 mm and 185 mm were cut out from stainless steel pipes with inner diameters of φ19 mm and φ26 mm and wall thicknesses of 0.5 mm, and four pipe segments were cut out from stainless steel pipes with inner diameter φ4 mm and wall thickness of 0.5 mm. The length is about 5 mm, and two circular plates each having a diameter of φ20 mm and φ27 mm are cut out from a stainless steel plate having a thickness of 1 mm, and an annular plate is further cut. The inner diameter of the annular plate is φ19 mm and the outer diameter is φ27 mm.

There are 4 side circular holes uniformly distributed in the circumferential direction at a distance of 5 mm from the end point of the stainless steel pipe with an inner diameter of φ19 mm. The diameter of the circular hole is φ5 mm, and then four sides are uniformly opened in the circumferential direction at a distance of 10 mm from the end point of the stainless steel pipe with an inner diameter of φ26 mm. The diameter of the round hole is also φ5mm. The end of the stainless steel pipe with an inner diameter of φ19mm from the side hole is welded firmly to the circular plate with a diameter of φ20mm, and is placed inside the stainless steel pipe with an inner diameter of φ26mm, and each of the four inner diameters is φ4mm. The pipe section passes through, and determines the relative position of the inner pipe (inner diameter φ19mm) and the outer pipe (inner diameter φ26mm) in the axial direction. In the case of ensuring the concentricity of the two, respectively, four φ4mm pipe segments and the inner and outer pipe shells respectively The body weld firmly forms the through hole, and the end of the hole is exposed to the inner and outer tube parts. Then, the end of the outer tube which is closer to the four air tube is welded to the φ27mm disk to form a closed to be closed. Concave cavity.

After placing the concave cavity in the vacuum chamber, exhausting the air in the cavity, injecting the thermal conductive MW-A medium, the injection amount is 1590 mm ³ , which is about 3 mm of the liquid level at the bottom of the concave cavity, and then passes the vacuum sub-arc welding. The annular plate is fixed above the concave cavity. At this point, the preparation of the concave heat pipe is completed, and four vent pipes are penetrated under the groove and the outer casing.

Further, the customized circular metal shell lighter is fixed with the lower bottom plate of the concave heat pipe, and the outer diameter of the lighter is 27 mm and the height is 50 mm, which is divided into two layers, the upper layer is 30 mm high, the shell thickness is 0.5 mm, and the inner wall of the casing is covered with asbestos insulation layer. As the combustion chamber, the insulation layer is 3mm thick, and the combustion nozzle of the lighter is arranged in the center of the casing, but 8 outlet holes are arranged equidistantly in the circumferential direction at 8mm from the bottom plate of the concave heat pipe, and the diameter of the air hole is φ5mm, in addition to these pores, There is no other gap, that is, once the 8 holes are blocked, the fire source in the combustion chamber will be automatically extinguished. The lower layer is placed in the fuel tank except the place where the flint and the nozzle are arranged, and the compressed liquid butane is stored in the concave heat pipe. The outer surface of the lighter housing is covered with an asbestos paper thermal insulation layer, and the thermal insulation layer is 2 mm thick, leaving a space for the upper and lower rows of holes.

Finally, a slider is arranged around the periphery of the casing on the outer side of the combustion chamber, and the slider moves up to block the four vent pipes in the concave heat pipe, and simultaneously opens the air outlet of the combustion chamber and simultaneously ignites the lighter to heat the concave heat pipe, and slides When the block is moved down, the air outlet of the combustion chamber is blocked, the burning of the lighter is extinguished, and the four air holes of the side wall of the concave heat pipe are opened.

The heating device processed in the above steps is shown in Figure 4b.

Rolling cigar leaves into a diameter of 18.9mm and a length of 175mm can be applied to cigarettes that are heated at low temperature. This cigarette can also be burned and sucked. The filter is fixed at one end of the cigarette. The filter is 40mm long and the filter diameter is combined with the cigarette. The section length of 10mm is 19mm, and the remaining 30mm section is the same diameter as the cigarette. The cigarette is made as shown in Figure 4a. The filter section with a diameter of 19mm is hardened to be combined with the end of the heat pipe. Sufficient strength and stiffness.

Claims

The invention relates to a heating type low temperature cigarette comprising a filter, a heating device, a shredded tobacco, an insulating layer and an outer casing, wherein the heating device is mainly composed of a heat pipe and a combustion chamber, wherein the combustion chamber is used for generating heat, and the heat pipe is used for heat conduction and heat pipe. After the heat absorption section is placed in the combustion chamber to absorb heat, the heat is transmitted to the tobacco through the heat release section of the heat pipe to achieve heating.
The heating type low temperature cigarette according to claim 1, wherein a plugging and switching device is disposed between the air outlet hole of the combustion chamber and the air inlet hole of the shredded tobacco for alternately controlling the air outlet of the combustion chamber and the tobacco in the tobacco. Intake, the combustion heating is not synchronized with the cigarette suction.
The heating type low temperature cigarette according to claim 1 or claim 2, wherein a partition is disposed in the combustion chamber to separate the heat absorption section of the heat pipe from the heat release section, and the exhaust gas in the combustion chamber is prevented from flowing to the heat pipe. The exothermic section traversed.
The heating type low-temperature cigarette according to any one of claims 1 to 3, characterized in that: the combustion chamber is provided with a lighter ignition device, which is preferably synchronized with the opening device for opening the combustion chamber air outlet, and is burned by a lighter. The heat absorption section of the heat pipe is heated.
The heating type low temperature cigarette according to claim 4, wherein the fuel tank of the lighter is located at a lower portion of the combustion chamber and is composed of one or more independent fuel tanks for storing fuel required for burning the lighter. At least one lighter ignition action is required for fuel depletion in the fuel tank.
The heating type low temperature cigarette according to claim 1 to claim 3, wherein the combustion chamber is filled with wood chips, paper sheets, cotton yarn, carbon material, combustible ice, solid alcohol, coal, candles, gunpowder. A flammable substance composed of one of petroleum, rayon, and a combination thereof, which is ignited by means of a match, a lighter, a frictional fire, and a burning fire, and then heats the heat absorbing section of the heat pipe.
The heating type low temperature cigarette according to any one of claims 1 to 3, wherein said combustion chamber is filled with a chemical raw material, and heating of the heat absorption section of the heat pipe is achieved by chemical reaction exotherm.
The heating type low temperature cigarette according to any one of claims 1 to 3, characterized in that: the electric combustion device is arranged in the combustion chamber, and heating of the heat absorption section of the heat pipe is realized after the power is turned on.
The heated low temperature cigarette according to claim 1, wherein the heat pipe heat absorption section in the combustion chamber is heated by combustion baking of an external fire source.
A method for preparing a heated low-temperature cigarette according to any one of claims 1 to 9, characterized in that it is processed by one of the following two methods:

A. Core heating cigarette: After the columnar heat pipe is processed, an infusible baffle is fixed between the heat absorption section and the heat release section of the heat pipe, and the tobacco is wrapped outside the heat release section of the heat pipe, and the cross-sectional size after wrapping is The outer shape of the baffle is flush, and then the outer casing with the thermal insulation layer is wrapped around the outer portion of the shredded tobacco and the heat pipe, and the outer casing preferably has a heat insulating function, and the outer casing is opened at least two in the circumferential direction. The row of holes, the lower row of holes are located in the heat absorption section of the heat pipe, and the upper row of holes are located in the tobacco section, wherein the outer casing and the baffle of the heat absorption section constitute a combustion chamber space, and the upper end of the outer casing is flush with the tobacco Fix the filter, arrange a plugging conversion device such as a movable slider on the surface of the outer shell of the opening, block the lower row of holes when the slider moves down, open the upper row of holes, move the slider up and reverse, open the lower row of holes Blocking the upper row of holes, the combustion chamber can be filled with combustible materials, or can be filled with heat materials for students, electric heating devices can be arranged, lighter devices can be placed, and the fuel tanks required for the lighters are arranged below the combustion chamber. .

B. Externally heated cigarette: a concave heat pipe is processed, and at least one intake pipe is disposed outside the heat pipe to penetrate the inner and outer walls of the heat pipe and is sealed and fixed, and the tobacco in the groove of the heat pipe is flush with the upper side of the heat pipe, and the filter is matched with The upper end of the heat pipe and the shredded tobacco is fixed, and the groove outer casing preferably has a section of heat insulation, and then the combustion chamber is fixed below the heat pipe, and one or more air outlet holes are opened in the ring direction above the combustion chamber, in the heat pipe section and the combustion chamber. A blocking conversion device such as a movable sliding block is arranged on the outer casing, and all the air inlet holes on the side of the heat pipe can be blocked when the slider is moved upward, and the air outlet hole of the combustion chamber is opened at the same time, and the function is opposite when the slider is moved downward, Block all the air outlets of the combustion chamber and open the air inlet holes on the side of the heat pipe. The combustion chamber can be filled with combustible materials, or can be filled with heat materials for students. The electric heating device can also arrange the lighter device and arrange the fuel tank required for the lighter below the combustion chamber.
The method of manufacturing a heated low-temperature cigarette according to claim 10, wherein the heating means and the cigarette are formed in a separable form that can be assembled with each other, wherein heating of the shredded tobacco is performed by one of a columnar and a concave heat pipe.