Low temperature heating smoking device

Abstract

The present invention discloses a low-temperature heating smoking device, comprising a shell with an opening at the top, a round tubular heating cylinder for heating a cigarette cartridge, a power supply for providing electric energy, and a control mainboard for controlling the current, the power supply, the heating cylinder, and the control mainboard are sequentially connected in series through electric wires, the top of the heating cylinder is connected to the opening, the bottom of the heating cylinder is connected to an air inlet pipe, the air inlet pipe extends to the outside of the shell, the control mainboard is provided with a button and a switch for adjusting the current, and the current passing through the heating cylinder is adjusted by the button on the control mainboard to control the heating power of the heating cylinder. The smoking device heats the cigarette cartridge from the periphery of the cigarette cartridge through the round tubular heating cylinder, so as to achieve uniform heating of the cigarette cartridge, improve the utilization rate of cigarettes and the smoking taste of consumers.

Description

Technical Field

[0001] The present invention relates to the technical field of smoking article heating, and in particular to a low-temperature heating smoking article. Background Art

[0002] Traditional burning cigarettes decompose to produce harmful substances such as tar, carbon monoxide, phenol, nitrogen oxides, olefins, polycyclic aromatic hydrocarbons, etc., which are harmful to human health after being inhaled. As the issue of smoking and health has received increasing attention from all walks of life, new non-combustion tobacco products have gradually gained favor in the market.

[0003] "Low temperature non-combustion" is a hot product among new tobacco products. Its principle is to use heating equipment to heat tobacco at low temperature without burning it. The burning of objects will produce many new components, such as common plastics, paper, coal and other items. The shape and taste are very stable. Once burned, they will release black smoke and pungent odors, which are not present when not burned. The same is true for daily smoking. Smokers light tobacco and then inhale the smoke produced by the burning. While taking in nicotine, they also inhale thousands of substances produced by the burning of tobacco into the body. These substances produced after burning can cause great harm to the smoker's body. As a result, electronic cigarettes that are compatible with low temperature non-combustion tobacco have emerged. Heat-not-burn electronic cigarettes are the products that are closest to traditional cigarettes in terms of smoking quality and habits. Because they do not burn, the harmful components released are significantly reduced compared to traditional cigarettes, and the product safety is significantly improved. In recent years, it has become a hot spot for the research and development of new tobacco products.

[0004] Most of the existing electronic cigarette products use core-type heating technology with ceramic heating needles, that is, the electric heating element is inserted into the tobacco for heating; this heating method causes uneven heating of the tobacco, and the tobacco in the outer low-temperature area cannot be heated, resulting in low cigarette utilization, high cost of using the smoking device, and poor user experience.

[0005] For example, a heat-not-combustible smoking device in [201910321645.8] includes a smoking device body and an upper cover assembly connected by magnetic attraction; a receiving chamber is provided in the smoking device body, a heating rod and a sleeve are provided in the receiving chamber, the sleeve includes a cylinder sleeved on the outer periphery of the heating rod and a cylinder bottom connected to the cylinder body, a through hole is provided on the cylinder bottom for the heating rod to pass through, and a first opening is provided on the end of the cylinder away from the cylinder bottom; the upper cover assembly includes a cover body, a second opening corresponding to the first opening is provided on the cover body; the sleeve and the upper cover assembly are connected together by magnetic attraction. When the upper cover assembly moves in a direction away from the smoking device body, due to the magnetic attraction between the upper cover assembly and the sleeve, the upper cover assembly can drive the sleeve to move outward, and then the sleeve drives the cigarette to move outward, so that the cigarette is separated from the heating rod.

[0006] The above-mentioned heated smoking device heats the tobacco by inserting a heating ceramic rod into the tobacco, which causes uneven heating of the tobacco.

[0007] For example, [201910358157.4] is a magnetic particle equalizing heat smoking device that can achieve time-sharing and position-sharing heating. The magnetic particle equalizing heat smoking device is equipped with 2-5 electromagnetic coils outside the heating chamber. Through a parallel circuit, these electromagnetic induction coils are controlled to output different powers according to different working voltage programs, so that the induction heating materials at different positions receive different energies at different times to achieve segmented heating. In this way, multiple induction heating materials are arranged at the far lip end to generate more heat, fully heat the smoke-generating matrix, and cause no waste. Less induction heating material is arranged at the near lip end, and the heat transferred from the far lip end can be used to continue heating, which also plays a role in cooling.

[0008] The above-mentioned smoking device is complex, difficult to manufacture, has low heating efficiency and high cost. Summary of the invention

[0009] To solve the above problems, the present invention provides a low-temperature heating smoking device, which heats the cigarette cartridge from the periphery of the cigarette cartridge through a cylindrical heating tube, thereby achieving uniform heating of tobacco, improving the utilization rate of cigarettes and the smoking taste of consumers. The smoking device can also change the heating power of the heating tube by changing the current, and consumers can adjust the current according to their smoking preferences.

[0010] The technical solution of the present invention is as follows: The present invention provides a low-temperature heating smoking device, comprising an outer shell with an opening at the top, a tubular heating tube for heating a tobacco cartridge, a power supply for providing electrical energy, and a control mainboard for controlling the current size are arranged inside the outer shell, the power supply, the heating tube, and the control mainboard are connected in series in sequence through wires, the top of the heating tube is connected to the opening, the bottom of the heating tube is connected to an air inlet pipe, the air inlet pipe extends to the outside of the outer shell, the control mainboard is provided with a button and a switch for adjusting the current size, and the current passing through the heating tube is adjusted by the button on the control mainboard to control the heating power of the heating tube.

[0011] Preferably, the heating tube includes a tubular substrate for fixing and clamping the cigarette cartridge, a spectrally selective emission coating coated on the outer wall of the substrate, a peripheral heating coating coated on the outer side of the spectrally selective emission coating, an upper circular ring electrode and a lower circular ring electrode sleeved on the outer side of the spectrally selective emission coating, the peripheral heating coating extends from the upper circular ring electrode to the lower circular ring electrode, the substrate is made of high temperature resistant insulating material, the upper circular ring electrode is electrically connected to the power supply, the lower circular ring electrode is electrically connected to the control main board, the spectrally selective emission coating includes material layer one and material layer two alternately stacked, and the material layer one and material layer two are both optically heterogeneous structures.

[0012] Preferably, the material layer one and the material layer two are Ag and Ge respectively.

[0013] Preferably, the thickness ratio of the material layer 1 to the material layer 2 is d1 / d2, and 0.05≤d1 / d2≤0.95.

[0014] Preferably, the thickness of the spectrally selective emission coating is t, and 0.1 μm≤t≤100 μm, and the thickness of the peripheral heating coating is uniform and between 1 μm and 100 μm.

[0015] Preferably, the matrix material is one of alumina, zirconia and quartz glass.

[0016] Preferably, the peripheral heating coating material is one of titanium nitride, gold and silver.

[0017] Preferably, the peripheral heating coating is coated on the outer surface of the substrate in a spiral shape.

[0018] Preferably, the peripheral heating coating is coated on the outer surface of the substrate by magnetron sputtering.

[0019] Preferably, the material of the upper circular electrode and the lower circular electrode is one of silver, silver alloy, copper and copper alloy.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention provides a low-temperature heating smoking device, which heats the cigarette cartridge from the periphery of the cigarette cartridge through a circular tubular heating cylinder, thereby achieving uniform heating of the cigarette cartridge, improving the utilization rate of the cigarettes and the smoking taste of consumers.

[0022] 2. The present invention provides a low-temperature heating smoking device, which can change the heating power of the heating tube by changing the current size, and consumers can adjust the current size according to their own smoking preferences.

[0023] 3. The present invention provides a low-temperature heating smoking device, and the smoking device emits infrared radiation that can penetrate cigarette paper through a spectrally selective emission coating, directly heating the tobacco, so that the tobacco is heated evenly, burns more completely, has a higher utilization rate, and provides consumers with a better smoking taste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front cross-sectional structural schematic diagram of a low-temperature heating smoking device in an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of a heating tube of a low-temperature heating smoking device according to an embodiment of the present invention;

[0026] Figure 3It is a schematic cross-sectional structure diagram of a low-temperature heating smoking device in an embodiment of the present invention;

[0027] Figure 4 This is a schematic cross-sectional structure diagram of a spectrum selective emission coating of a low-temperature heating smoking device according to an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of emission spectrum characteristic curves of material layer 1 and material layer 2 of a low-temperature heating smoking device in an embodiment of the present invention.

[0029] In the figure: 1. outer shell; 2. heating tube; 3. power supply; 4. control main board; 5. air inlet pipe; 201. substrate; 202. spectrally selective emission coating; 203. peripheral heating coating; 204. upper circular electrode; 205. lower circular electrode; 206. material layer one; 207. material layer two. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the specific implementation of the present invention will be described below with reference to the accompanying drawings.

[0031] Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. The present invention is not limited to these embodiments.

[0032] The specific embodiments of the present invention are as follows:

[0033] Example 1

[0034] See also Figure 1 A low-temperature heating smoking device comprises a shell 1 with an opening at the top, a tubular heating tube 2 for heating a cigarette cartridge, a power supply 3 for providing electric energy, and a control mainboard 4 for controlling the current size are arranged inside the shell 1, the power supply 3, the heating tube 2, and the control mainboard 4 are connected in series in sequence through wires, the top of the heating tube 2 is communicated with the opening, the bottom of the heating tube 2 is connected with an air inlet pipe 5, and the air inlet pipe 5 extends to the outside of the shell 1, and buttons and switches for adjusting the current size are arranged on the control mainboard 4, and the current size passing through the heating tube 2 is adjusted by the buttons on the control mainboard 4 to control the heating power of the heating tube 2.

[0035] In the prior art, heating tobacco devices generally use a core-type heating technology of ceramic heating needles, that is, inserting an electric heating element into the tobacco for heating. This heating method causes uneven heating of the tobacco, and the tobacco in the peripheral low-temperature area cannot be heated, resulting in low tobacco utilization. In order to avoid heating the cigarette from the inside, in the present invention, the cigarette cartridge is placed inside the heating cylinder 2 for heating, and the cigarette cartridge is heated from the outside by a cylindrical heating element, so that the cigarette cartridge can be heated more evenly.

[0036] In the present invention, the heating tube 2 can be made of electric heating materials, such as stainless steel electric heating tubes (mica electric heating tubes), ceramic electric heating tubes, cast aluminum electric heating tubes, and cast copper electric heating tubes. When current passes through, the heating tube can generate heat to heat the internal space in a surrounding manner. Consumers can put the cigarette cartridge into the heating tube 2, and then turn on the switch on the control main board 4, connect the power supply 3 and the heating tube 2, and when current passes through the heating tube 2, the internal cigarette cartridge can be heated, and then the consumer can inhale the cigarette. At the same time, the control main board 4 in the present invention is provided with a current control module, which can change the size of the resistance in the circuit, thereby adjusting the size of the current in the circuit, and then changing the heating power of the electric heating material.

[0037] The heat of the peripheral heating method is conducted from the heating tube 2 to the cigarette paper, and then from the cigarette paper to the tobacco for heating, and gradually transferred from the outer layer of the tobacco to the inner layer of the tobacco. Due to the different contact thermal resistances between the cigarette paper and the wall of the heating tube 2, it may cause uneven local heating, resulting in uneven temperature distribution of the tobacco and low tobacco utilization. Therefore, in order to reduce the influence of the contact thermal resistance of the cigarette paper on the heating efficiency, the present invention utilizes the spectrally selective emission coating to emit infrared radiation that can directly penetrate the cigarette paper when heated, and heats the internal tobacco, so that the tobacco is heated evenly, burns more fully, and has a higher utilization rate.

[0038] See also Figures 2 to 4 The heating tube 2 includes a tubular substrate 201 for fixing and clamping the cigarette cartridge, a spectrally selective emission coating 202 coated on the outer wall of the substrate 201, a peripheral heating coating 203 coated on the outer side of the spectrally selective emission coating 202, an upper circular electrode 204 and a lower circular electrode 205 sleeved on the outer side of the spectrally selective emission coating 202, the peripheral heating coating 203 extends from the upper circular electrode 204 to the lower circular electrode 205, the substrate 201 is made of high temperature resistant insulating material, the upper circular electrode 204 is electrically connected to the power supply 3, the lower circular electrode 205 is electrically connected to the control main board 4, the spectrally selective emission coating 202 includes a material layer 1 206 and a material layer 2 207 alternately stacked, and the material layer 1 206 and the material layer 2 207 are both optically heterogeneous materials.

[0039] In the present invention, the substrate 201 is in the shape of a round tube, which is hollow inside and penetrated at both ends, and the hollow part forms a heating chamber for accommodating the cigarette cartridge, and the tobacco can be heated by inserting the cigarette cartridge into the heating chamber, and the substrate 201 is made of a high temperature resistant insulating material. The substrate 201 material is one of alumina, zirconium oxide, and quartz glass.

[0040] In the present invention, the upper annular electrode 204 is connected to the power source 3 through a wire, the lower annular electrode 205 is connected to the control main board 4 through a wire, the peripheral heating coating 203 extends from the upper annular electrode 204 to the lower annular electrode 205, and the peripheral heating coating 203, the upper annular electrode 204, and the lower annular electrode 205 are all conductive materials, so that the power source 3, the heating tube 2, and the control main board 4 together constitute a complete current loop. When the switch of the control main board 4 is turned on, the peripheral heating coating 203 will have current passing through it and generate heat, and the current flowing through the peripheral heating coating 203 is basically the same, and the cigarette cartridge inside it can be evenly heated at this time.

[0041] Among them, the material of the peripheral heating coating 203 is one of titanium nitride, gold, and silver. The material of the upper circular electrode 204 and the lower circular electrode 205 is one of silver, silver alloy, copper, and copper alloy. The peripheral heating coating 203 is coated on the outer surface of the substrate 201 in a spiral shape. In some other embodiments, the peripheral heating coating 203 can also be fully coated on the outer surface of the substrate 201, and the coating amount at the same height position can be evenly distributed. Moreover, the peripheral heating coating 203 is coated on the outer surface of the substrate 201 by magnetron sputtering coating. Sputtering coating is a technology that uses energetic particles to bombard the target surface in a vacuum so that the bombarded particles are deposited on the substrate. This coating method can obtain a thin film with very uniform thickness.

[0042] The present invention is based on the principle of thermal radiation. After being heated, the spectrally selective emission coating 202 can emit stable radiation, and the stable heating effect on the cigarette cartridge is achieved through the radiation effect.

[0043] Thermal radiation, objects radiate electromagnetic waves due to their temperature. The higher the temperature, the greater the total energy radiated and the more short-wave components. The spectrum of thermal radiation is a continuous spectrum, and the wavelength coverage range can theoretically range from 0 to ∞. General thermal radiation is mainly transmitted by visible light and infrared rays with longer wavelengths. Thermal radiation can penetrate cigarette paper and directly heat the tobacco inside.

[0044] In this embodiment, the spectrum selective emission coating 202 is composed of Ag and Ge alternately stacked. After being heated, the spectrum selective emission coating 202 can emit infrared radiation of a specific band, and transmit the cigarette paper of the cigarette cartridge in the heating chamber to radiantly heat the tobacco. Since the current passing through the spectrum selective emission coating 202 is relatively stable, the infrared radiation it emits is also relatively stable, thereby achieving uniform heating of the inside of the tobacco.

[0045] The thickness ratio of the material layer 1 206 to the material layer 207 is d1 / d2, and 0.05≤d1 / d2≤0.95. The thickness of the spectrally selective emission coating 202 is t, and 0.1 μm≤t≤100 μm. The thickness of the peripheral heating coating 203 is uniform and between 1 μm and 100 μm.

[0046] Example 2

[0047] The difference between Example 2 and Example 1 is that the spectrum selective emission coating 202 is coated on the inner wall of the substrate 201, as follows:

[0048] On the basis of Example 1, a low-temperature heating smoking device comprises a shell 1 with an opening at the top, a tubular heating tube 2 for heating a tobacco cartridge, a power supply 3 for providing electrical energy, and a control mainboard 4 for controlling the current are arranged inside the shell 1, the power supply 3, the heating tube 2, and the control mainboard 4 are connected in series in sequence through wires, the top of the heating tube 2 is connected to the opening, the bottom of the heating tube 2 is connected to an air intake pipe 5, and the air intake pipe 5 extends to the outside of the shell 1, and buttons and switches for adjusting the current are arranged on the control mainboard 4, and the current passing through the heating tube 2 is adjusted by the buttons on the control mainboard 4 to control the heating power of the heating tube 2.

[0049] The heating tube 2 includes a tubular substrate 201 for fixing and clamping the cigarette cartridge, a spectrally selective emission coating 202 coated on the inner wall of the substrate 201, a peripheral heating coating 203 coated on the outer wall of the substrate 201, an upper circular ring electrode 204 and a lower circular ring electrode 205 sleeved on the outer side of the tubular substrate 201, the substrate 201 is made of high-temperature resistant insulating material, and the substrate 201 is infrared transparent, the upper circular ring electrode 204 is electrically connected to the power supply 3, the lower circular ring electrode 205 is electrically connected to the control main board 4, the peripheral heating coating 203 extends from the upper circular ring electrode 204 to the lower circular ring electrode 205, the spectrally selective emission coating 202 includes a material layer 1 206 and a material layer 207 alternately stacked, and the material layer 1 206 and the material layer 2 207 are both optically heterogeneous materials.

[0050] In this embodiment, the substrate 201 is in the shape of a round tube, which is hollow inside and penetrated at both ends, and the hollow part forms a heating chamber for accommodating the cigarette cartridge, and the cigarette cartridge can be heated by simply inserting it into the heating chamber, and the substrate 201 is made of a high temperature resistant insulating and infrared transparent material. Specifically, the substrate 201 material is one of alumina, zirconium oxide, and quartz glass.

[0051] In this embodiment, the spectrally selective emission coating 202 may be in direct contact with the cigarette cartridge, so that the infrared radiation emitted by the spectrally selective emission coating 202 heats the cigarette cartridge more efficiently, at a closer distance, and more evenly and stably.

[0052] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0054] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation modes, and it cannot be determined that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A low-temperature heating smoking device, characterized in that: The invention comprises a shell (1) with an opening at the top, wherein a tubular heating tube (2) for heating a cigarette cartridge, a power source (3) for providing electric energy, and a control mainboard (4) for controlling the magnitude of electric current are arranged inside the shell (1), wherein the power source (3), the heating tube (2), and the control mainboard (4) are connected in sequence through electric wires, wherein the top of the heating tube (2) is connected to the opening, and the bottom of the heating tube (2) is connected to an air intake pipe (5), and the air intake pipe (5) extends to the outside of the shell (1), and wherein buttons and switches for adjusting the magnitude of electric current are arranged on the control mainboard (4), and the magnitude of electric current passing through the heating tube (2) is adjusted by using the buttons on the control mainboard (4), thereby controlling the heating power of the heating tube (2); The heating cylinder (2) comprises a tubular substrate (201) for fixing and clamping a cigarette cartridge, a spectrally selective emission coating (202) coated on the outer wall of the substrate (201), a peripheral heating coating (203) coated on the outer side of the spectrally selective emission coating (202), an upper circular ring electrode (204) and a lower circular ring electrode (205) sleeved on the outer side of the spectrally selective emission coating (202), the peripheral heating coating (203) extending from the upper circular ring electrode (204) to the lower circular ring electrode (205), the substrate (201) is made of a high temperature resistant insulating material, the upper circular ring electrode (204) is electrically connected to the power source (3), the lower circular ring electrode (205) is electrically connected to the control mainboard (4), the spectrally selective emission coating (202) comprises a material layer 1 (206) and a material layer 2 (207) alternately stacked, and both the material layer 1 and the material layer 2 are optical heterogeneous structures; The peripheral heating coating (203) is coated on the outer surface of the substrate (201) by means of magnetron sputtering coating; The material of the upper circular electrode (204) and the lower circular electrode (205) is one of silver, silver alloy, copper and copper alloy.

2. A low temperature heating smoking device according to claim 1, characterized in that: The material layer one (206) and the material layer two (207) are Ag and Ge respectively.

3. A low temperature heating smoking device according to claim 2, characterized in that: The thickness ratio of the material layer 1 (206) to the material layer 2 (207) is d1 / d2, and 0.05≤d1 / d2≤0.

95.

4. A low temperature heating smoking device according to claim 3, characterized in that: The thickness of the spectrally selective emission coating (202) is t, and 0.1 μm≤t≤100 μm, and the thickness of the peripheral heating coating (203) is uniform and between 1 μm and 100 μm.

5. The low temperature heating smoking device according to claim 1, characterized in that: The substrate (201) is made of one of aluminum oxide, zirconium oxide and quartz glass.

6. A low temperature heating smoking device according to claim 1, characterized in that: The material of the peripheral heating coating (203) is one of titanium nitride, gold and silver.

7. The low temperature heating smoking device according to claim 1, characterized in that: The peripheral heating coating (203) is coated on the outer surface of the substrate (201) in a spiral shape.

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