CN111820476A - Infrared heating tube and aerosol generating device - Google Patents

Abstract

The invention discloses an aerosol generating device in the field of aerosol generating devices. The aerosol generating device includes an infrared heating tube, the infrared heating tube includes a heating tube body and an electrode part, and the heating tube body includes a body for accommodating gas The tube wall of the sol-generating substrate product, and the heating unit for generating infrared rays and heating the aerosol-generating substrate product, the electrode components are respectively connected to the heating unit and the external power supply device, and the power supply device supplies power to the heating unit through the electrode components. The invention uniformly heats the aerosol-generating base material product through infrared rays with good penetrating performance, so as to avoid unnecessary volatile substances produced by the aerosol-generating base material product due to uneven heating, thereby ensuring the usability of the aerosol generating device .

Description

Infrared heating tube and aerosol generating device

technical field

The invention relates to the field of aerosol generating devices, in particular to an infrared heating tube and an aerosol generating device.

Background technique

In the existing aerosol generating devices, the aerosol-generating substrate products (such as cigarettes) are all heated by heating elements to generate aerosols. During heating, the temperature of the heating element is controlled within a specific band temperature range to ensure that the aerosol-generating substrate article releases desired volatile compounds without generating/releasing undesired volatile compounds.

In the traditional aerosol-generating products, the heating elements are all resistive or electromagnetic. The heating surface of the heating element is directly contacted with the aerosol-generating substrate product, and the aerosol-generating substrate product is heated by means of heat conduction. However, this heating method based on heat conduction leads to a high temperature of the aerosol-generated substrate product in contact with the heating surface, while the temperature of the aerosol-generated substrate product farther away from the heating surface is lower, which will eventually lead to aerosol generation. The resulting substrate article does not heat uniformly, so that areas close to the heating element are overheated and areas further from the heating surface have not reached the desired temperature.

This phenomenon of uneven heating will lead to uncontrollable volatile substances produced by the aerosol-generating substrate product, which seriously affects the performance of the aerosol-generating device.

The above shortcomings are worth solving.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the present invention provides an infrared heating tube and an aerosol generating device.

The technical scheme of the present invention is as follows:

On the one hand, an infrared heating tube is characterized in that, comprising:

a heating tube body, which includes a tube wall for accommodating the aerosol-generating substrate product, and a heating unit for generating infrared rays and heating the aerosol-generating substrate product;

and an electrode component, which is respectively connected to the heating unit and an external power supply device, and the power supply device supplies power to the heating unit through the electrode component.

The present invention according to the above solution is characterized in that the tube wall includes an inner tube and an outer tube, the aerosol-generating substrate product is placed inside the inner tube, and the heat generating unit is located between the inner tube and the inner tube. in the cavity between the outer tubes.

Further, the inner tube and the outer tube form a closed cavity, the interior of which is hollow or filled with inert gas, and the heating unit is placed in the closed cavity.

Further, the inner tube includes a heating tube inner space for accommodating the aerosol-generating substrate product, and an inner tube wall through which infrared rays pass.

Further, the heating unit is a heating wire fixed between the inner tube and the outer tube;

Or, the heating unit is a heating film provided on the outer wall of the inner tube/the inner wall of the outer tube.

Further, an infrared directional reflection unit is further arranged between the inner tube and the outer tube, and the infrared directional reflection unit is located outside the heating unit.

Further, the infrared directional reflection unit is an infrared directional reflection layer attached to the inner wall of the outer tube;

Or, the infrared directional reflection unit is an infrared directional reflection cover arranged in the pipe wall.

Further, the outer side of the outer tube is provided with a heat insulating member, or the outer wall of the outer tube is coated with a heat insulating material.

The present invention according to the above solution is characterized in that the cross section of the infrared directional reflection unit is circular; or the cross section of the infrared directional reflection unit is a ring formed by several parabolas.

The present invention according to the above-mentioned solution is characterized in that, the electrode member includes an electrical pin for connecting the external power supply device, and a connecting unit for connecting the electrical pin and the heating unit.

Further, the electrical pins are drawn out from the same end of the heating tube body;

Or, the electrical pins are drawn out from both ends of the heating tube body;

Or, the electrical pins are drawn out from both ends and the middle of the heating tube body.

Further, the electrode component further includes heating wire frames located at both ends of the heating tube body, and the heating wire frames are assembled to fix or position the heating unit.

Further, the heating wire frame includes a plurality of protruding fins, a concave groove is provided between two adjacent fins, and the heating wire constituting the heating unit is wound on the fins.

On the other hand, an aerosol generating device is characterized by comprising the infrared heating tube described in any one of the above.

According to the present invention according to the above scheme, the beneficial effect is that the present invention uses a heating unit to generate infrared rays, and conducts infrared heating to the internal aerosol-generating substrate products, so that infrared rays with good penetrating properties can generate infrared rays for the aerosol-generating substrate products. Uniform heating is performed to avoid unnecessary volatile substances produced by the aerosol-generating base material due to uneven heating, thereby ensuring the performance of the aerosol-generating device; in addition, the structure of the present invention can make full use of infrared heat, so that the energy utilization rate is more efficient. The invention has the advantages of simple and compact structure, convenient installation and low cost.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram of a circuit structure in the first embodiment.

FIG. 3 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 4 is a schematic diagram of a circuit structure in the second embodiment.

FIG. 5 is a schematic diagram of another circuit structure in the second embodiment.

FIG. 6 is a schematic structural diagram of Embodiment 3 of the present invention.

FIG. 7 is a schematic diagram of a circuit structure in the third embodiment.

FIG. 8 is a schematic structural diagram of an embodiment of a heat pipe body.

FIG. 9 is a schematic structural diagram of another embodiment of the heat pipe body.

FIG. 10 is a schematic structural diagram of the third embodiment of the heat pipe body.

FIG. 11 is a schematic diagram of the structure of the heating wire frame.

FIG. 12 is a schematic diagram of the non-terminals after the heating wire frame and the heating wire are assembled in one embodiment.

FIG. 13 is a schematic diagram of the terminals after the heating wire frame and the heating wire are assembled in one embodiment.

FIG. 14 is a schematic diagram of the terminals after the heating wire frame and the heating wire are assembled in another embodiment.

In the figures, the respective reference numbers:

100-heating tube body; 110-inner tube; 120-heating unit; 130-infrared directional reflection unit; 140-outer tube;

200-electrode component; 210-heating wire frame; 211-fin; 212-groove; 220-connection unit; 230-electrical pin.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

An aerosol generating device, comprising an infrared heating tube for accommodating aerosol-generating substrate products (such as cigarettes, etc.) and performing infrared heating on the aerosol-generating substrate products, and the aerosol-generating substrate is heated by the infrared heating tube. Infrared heating of the product can make it heated evenly, and then can accurately control its heating temperature, so that it can produce the required volatile substances.

As shown in FIG. 1 to FIG. 14, an infrared heating tube includes a heating tube body 100 and an electrode part 200, wherein the heating tube body 100 is used for accommodating aerosol-generating substrate products, and generating infrared rays to aerosol-generating substrates The material product is heated; the electrode part 200 is used to connect an external power supply device and provide electric energy for the heating pipe body 100 .

1. Heating tube body

As shown in FIGS. 8 to 10 , the heating tube body 100 includes a tube wall for accommodating the aerosol-generating substrate product, and a heating unit 120 for generating infrared rays and heating the aerosol-generating substrate product.

The tube wall in the present invention includes an inner tube 110 and an outer tube 140, the heating unit 120 is located in the cavity between the inner tube 110 and the outer tube 140, the aerosol-generating substrate product is placed inside the inner tube 110, the outer tube 140 and The inner tube 110 is used together to support and fix the heating unit 120 and other components. Preferably, the inner tube 110 and the outer tube 140 form a closed cavity, the interior of which is hollow or filled with inert gas, and the heating unit 120 is placed in the closed cavity. The heating unit 120 is placed in a vacuum environment or an inert gas environment to prevent the heating unit 120 from being oxidized and affecting its heating efficiency.

The inner tube 110 includes a heating tube inner space for accommodating the aerosol-generating substrate product, and a wall of the inner tube 110 through which infrared rays pass. The heat generated by the heating unit 120 passes through the inner tube 110 in the form of infrared rays, and heats the aerosol-generating substrate product inside the inner tube 110 . Preferably, the wall of the inner tube 110 is made of a material with high infrared transmittance, such as quartz material.

The outer tube 140 is made of any one of glass, ceramic, plastic and other materials. In order to prevent the heat from being transferred to the outside and affecting the use experience, a heat insulating member is provided on the outer side of the outer tube 140, or the outer wall of the outer tube 140 is coated with a heat insulating material.

An infrared directional reflection unit 130 is further arranged between the inner tube 110 and the outer tube 140 , and the infrared directional reflection unit 130 is located outside the heating unit 120 . The cross section of the infrared directional reflection unit 130 is circular; or the cross section of the infrared directional reflection unit 130 is a ring formed by several parabolas. The focus of the parabola is the adjacent heating wire/heating film, as shown in Figure 9 and Figure 10, each parabola takes the adjacent heating wire/heating film as the focus, and multiple parabolas are connected to form a ring.

Preferably, the infrared directional reflection unit 130 is an infrared directional reflection layer attached to the inner wall of the outer tube 140, or the infrared directional reflection unit 130 is an infrared directional reflection cover provided in the tube wall, wherein the infrared directional reflection layer or the infrared directional reflection cover The material is preferably gold (ie gold plated layer).

The heating unit in the present invention is made of carbon fiber, tungsten, nickel alloy and other materials, which converts the electric energy of the external power supply device into infrared rays, and heats the aerosol-generated substrate product. Specifically, the heating unit may be a heating wire fixed between the inner tube and the outer tube; or, the heating unit may be a heating film provided on the outer wall of the inner tube/the inner wall of the outer tube.

In the embodiment shown in FIG. 8 , the heating tube body 100 includes an annular inner tube 110 , an annular outer tube 140 , and a heating wire interposed between the inner tube 110 and the outer tube 140 . The infrared directional reflection unit 130 in this embodiment is an infrared directional reflection layer laid on the inner wall of the outer tube 140 .

In the embodiment shown in FIG. 9 , the heating tube body 100 includes a circular inner tube 110 , an annular outer tube 140 , and a heating wire interposed between the inner tube 110 and the outer tube 140 . In this embodiment, the cross section of the inner wall of the outer tube 140 is in the shape of a ring formed by a plurality of parabolas, and the infrared image reflection unit is an infrared directional reflection layer laid on the inner wall of the outer tube.

In the embodiment shown in FIG. 10 , the heating tube body 100 includes a circular inner tube 110 , a circular outer tube 140 , and a heating wire interposed between the inner tube 110 and the outer tube 140 . The infrared directional reflection unit 130 in this embodiment is an infrared directional reflection cover fixed on the periphery of the heating wire, and the cross section of the infrared directional reflection cover is in the shape of a ring formed by a plurality of parabolas. In other embodiments, the cross section of the infrared directional reflector may be circular.

In the embodiments shown in FIG. 8 , FIG. 9 and FIG. 10 , each heating wire can be replaced with a heating film.

2. Electrode parts

The electrode part 200 is respectively connected to the heating unit 120 and an external power supply device, and the power supply device supplies power to the heating unit 120 through the electrode part 200 . The electrode component 200 in the present invention includes an electrical pin 230 for connecting the external power supply device, and a connecting unit 220 for connecting the electrical pin 230 and the heating unit 120 .

The electrical pins 230 are made of any one of metal wires, metal rods, PCB boards, and FPC, and their positions can be set at different positions of the heating tube body 100 according to the structural design of the heating tube body 100 .

The connection unit 220 is used to connect the heating unit 120 and the electrical pins 230, and is made of any one of sheets, plates, columns, wires, and wires with excellent electrical conductivity. Specifically, the connection unit 220 can be metal, PCB any of the boards. The connection unit 220 can not only connect the heating unit 120 and the electrical pins 230, but also short-circuit the heating unit 120 connected to it, so that it is not energized and does not generate heat, so that the aerosol can generate a base material product. Local heating.

The electrode component 200 further includes heating wire frames 210 located at both ends of the heating tube body 100 , and the heating wire frames 210 are assembled to fix or locate the heating unit 120 . The heating wire frame 210 is made of any one of ceramics, glass, metal or high temperature plastic, which can be undertaken by the heating tube body 100 or a structural component independent of the heating tube body 100 .

As shown in FIG. 11 , in this embodiment, the heating wire frame 210 is a separate structural component independent of the heating tube body 100 , and includes a plurality of protruding fins 211 , and between two adjacent fins 211 are arranged There is a concave groove 212 , and the heating wire constituting the heating unit 120 is wound on the fins 211 .

As shown in FIG. 1 and FIG. 2 , in one embodiment, the electrical pins 230 are drawn out from both ends of the heating tube body 100 , and the heating units 120 connected to the two electrical pins 230 are several series or parallel heating units. Silk/heating film. In the embodiment shown in FIG. 2 , the heating wires are in a parallel structure.

As shown in FIGS. 3 to 5 and FIGS. 12 to 14 , in another embodiment, the electrical pins 230 are drawn out from the same end of the heating tube body 100 . The heating units 120 connected to the two electrical pins 230 are several heating wires/heating films connected in series or in parallel. In the embodiment shown in FIG. 4 and FIG. 14 , the heating wire is in a parallel structure; in the embodiment shown in FIG. 5 and FIG. 13 , the heating wire is in a series structure.

As shown in FIGS. 6 and 7 , in the third embodiment, the electrical pins 230 are led out from both ends and the middle of the heating tube body 100 . The heating unit 120 connected with the two electrical pins 230 at the top and the middle is a number of heating wires/heating films connected in series or in parallel, and the heating unit 120 connected with the two electrical pins 230 at the middle and the bottom is a number of serial or parallel heating units 120. Parallel heating wire / heating film. In the embodiment shown in FIG. 7 , the heating wires connected to the two electrical pins 230 on the top and the middle are in a parallel structure, and the heating wires connected with the two electrical pins 230 on the middle and the bottom are in a parallel structure.

The heating wire in the above embodiments can be replaced with a heating film, and the structure can be simply adjusted, which will not be described in detail here.

The invention uses a heating unit to generate infrared rays, and an infrared directional reflection unit is used to directionally reflect all the generated infrared rays to the inner tube, and the infrared rays passing through the inner tube are used to heat the aerosol-generated substrate product placed in the inner tube with infrared rays. The good penetration ability of infrared rays can make the aerosol-generated substrate products obtain uniform heating; the infrared directional reflection unit can make the generated infrared rays can be reflected to the inner tube, reduce the leakage of infrared rays, and ensure the utilization rate of infrared heating energy. high. In addition, the present invention preserves the heating unit through vacuum or the heating tube body filled with inert gas, which not only avoids its oxidation, but also further reduces the leakage of heat energy of the heating unit and the inner tube to the outside through convection, further improving the energy efficiency. utilization efficiency. The entire structure of the present invention is more compact, and the temperature of the outer tube is lower, which facilitates the installation and fixation of the entire infrared heating tube.

It should be understood that for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.

The patent of the present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the realization of the patent of the present invention is not limited by the above methods, as long as various improvements made by the method concept and technical solutions of the patent of the present invention are adopted, or no improvement is made. It is within the protection scope of the present invention to directly apply the concept and technical solution of the patent of the present invention to other occasions.

Claims (10)

1. an infrared heating tube, is characterized in that, comprises: a heating tube body, which includes a tube wall for accommodating the aerosol-generating substrate product, and a heating unit for generating infrared rays and heating the aerosol-generating substrate product; and an electrode component, which is respectively connected to the heating unit and an external power supply device, and the power supply device supplies power to the heating unit through the electrode component. 2 . The infrared heating tube according to claim 1 , wherein the tube wall comprises an inner tube and an outer tube, the aerosol-generating substrate product is placed inside the inner tube, and the heating unit is located in the inner tube. 3 . in the cavity between the inner tube and the outer tube. 3 . The infrared heating tube according to claim 2 , wherein the inner tube and the outer tube enclose a closed cavity, the interior of which is hollow or filled with an inert gas, and the heating unit is placed in the closed cavity. 4 . inside the cavity. 4. The infrared heating tube according to claim 2, wherein the heating unit is a heating wire fixed between the inner tube and the outer tube; Or, the heating unit is a heating film provided on the outer wall of the inner tube/the inner wall of the outer tube. 5 . The infrared heating tube according to claim 2 , wherein an infrared directional reflection unit is further provided between the inner tube and the outer tube, and the infrared directional reflection unit is located outside the heating unit. 6 . 6 . The infrared heating tube according to claim 5 , wherein the cross section of the infrared directional reflection unit is circular; or the cross section of the infrared directional reflection unit is a ring formed by several parabolas. 7 . 7 . The infrared heating tube according to claim 1 , wherein the electrode component comprises an electrical pin connecting the external power supply device, and a connecting unit connecting the electrical pin and the heating unit. 8 . 8. The infrared heating tube according to claim 7, wherein the electrical pins are drawn out from the same end of the heating tube body; Or, the electrical pins are drawn out from both ends of the heating tube body; Or, the electrical pins are drawn out from both ends and the middle of the heating tube body. 9 . The infrared heating tube according to claim 7 , wherein the electrode component further comprises a heating wire frame located at both ends of the heating tube body, and the heating wire frame is assembled to fix or position the heating unit. 10 . 10. An aerosol generating device, characterized in that it comprises the infrared heating tube according to any one of claims 1-9.

Images