A heated smoking device

Abstract

The present invention relates to a heated smoking device, comprising a smoking device body, the smoking device body being provided with a heating chamber for inserting tobacco products, the cavity wall of the heating chamber being provided with a hydrophobic and oleophobic coating, the contact angle of the hydrophobic and oleophobic coating with water and oil being greater than or close to 120°. A hydrophobic and oleophobic coating is provided in the heating chamber of the smoking device body of the heated smoking device. When the contact angle of the coating with water and oil is greater than 90°, the coating is a hydrophobic and oleophobic coating, and when the contact angle of the coating with water and oil is less than 90°, the coating is a hydrophilic and oleophobic coating. Therefore, in this case, the contact angles of the hydrophobic and oleophobic coating with water and oil are greater than or close to 120°, giving it excellent hydrophobic and oleophobic properties, effectively reducing the condensation and adhesion of tobacco oil, promoting the volatilization and precipitation of tobacco oil, and facilitating the cleaning of the smoking device, reducing tobacco oil residue.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco products, and in particular to a heated smoking device. Background Art

[0002] In recent years, heat-not-burn tobacco products have gradually come into the public eye and are welcomed by more consumers, and the matching electric heating smoking devices have also been widely used. Users bake tobacco products by inserting them into the heating chamber of the electric heating smoking device and controlling the baking temperature to be below the ignition point of the cigarette, so as to bake out the nicotine and various flavor substances in the tobacco products without burning, thereby meeting the smoking needs of smokers.

[0003] During use, heated tobacco devices can leave condensed liquid residue in the heating chamber. This residue accumulates with continued use, and during repeated heating, the active components in the liquid polymerize, producing thicker, heavier tar or even coke. This makes cleaning the device difficult and creates a fumes during puffing. This is especially true for devices with the heat source at the center of the heating chamber. Due to the thermal resistance of the cigarette, the heating chamber wall temperature is lower than the center, making condensation more likely. Summary of the Invention

[0004] An object of the present invention is to provide a heated smoking device to reduce the amount of residual tobacco oil in a heating chamber of the heated smoking device.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A heated smoking device comprises a smoking device body, wherein the smoking device body is provided with a heating cavity for inserting tobacco products, and the cavity wall of the heating cavity is provided with a hydrophobic and oleophobic coating, wherein the contact angle of the hydrophobic and oleophobic coating with water and oil is greater than or close to 120°.

[0007] Optionally, the hydrophobic and oleophobic coating is composed of 40-60 weight percent of nano-tungsten oxide, 6-14 weight percent of nano-titanium dioxide, 5-10 weight percent of nano-zinc oxide, and the remainder is silicon dioxide and / or catalytic component additives.

[0008] Optionally, the hydrophobic and oleophobic coating has a thickness of 0.01 to 1 mm.

[0009] Optionally, the hydrophobic and oleophobic coating has a thickness of 0.1 to 0.3 mm.

[0010] Optionally, the catalytic component additive is at least one of calcium oxide, magnesium oxide, transition metal oxides, and precious metal nanoparticles.

[0011] Optionally, the transition metal oxide is at least one of nickel oxide, cobalt oxide, iron oxide, and copper oxide.

[0012] Optionally, the noble metal nanoparticles are at least one of ruthenium, rhodium, palladium, osmium, iridium, and platinum.

[0013] Optionally, a heating needle / piece for inserting into the tobacco product is provided in the heating chamber.

[0014] Optionally, the surface of the heating needle / sheet is provided with the hydrophobic and oleophobic coating.

[0015] Optionally, a heating component is also included, which includes a power supply module, a power drive module and a heating module. The power supply module and the power drive module are arranged in the smoking device body, and the power supply module is connected to the heating module through the power drive module. The heating module is arranged in the cavity wall of the heating cavity and / or the heating needle / sheet.

[0016] It can be seen from the above technical solution that the present invention discloses a heated smoking device, which includes a smoking device body, the smoking device body is provided with a heating cavity for inserting tobacco products, and the cavity wall of the heating cavity is provided with a hydrophobic and oleophobic coating, and the contact angles of the hydrophobic and oleophobic coating with water and oil are greater than or close to 120°.

[0017] A hydrophobic and oleophobic coating is provided in the heating chamber of the smoking device body of the above-mentioned heated smoking device. When the contact angle of the coating with water or oil is greater than 90°, the coating is a hydrophobic and oleophobic coating. When the contact angle of the coating with water or oil is less than 90°, the coating is a hydrophilic and oleophobic coating. Therefore, in this case, the contact angles of the above-mentioned hydrophobic and oleophobic coating with water or oil are greater than or close to 120°, so that it has good hydrophobic and oleophobic properties and strong stability at high temperatures. The small amount of nano-zinc oxide and nano-titanium dioxide in the hydrophobic and oleophobic coating has the effect of enhancing the oleophobic effect of the coating and resisting the oil in the smoke. The acidic component corrosion effect makes the hydrophobic and oleophobic coating have good hydrophobic and oleophobic properties, which can effectively reduce the condensation and adhesion of the smoke oil, promote the volatilization and precipitation of the smoke oil, and help to clean the smoking device and reduce the residue of the smoke oil. On this basis, catalytic component additives can be added to make the hydrophobic and oleophobic coating have a catalytic cracking effect on the smoke oil at 200℃~300℃, thereby cracking the large molecular components in the smoke oil into more volatile small molecules during the operation of the heating device, which can further effectively reduce the residue of the smoke oil in the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A cross-sectional view of a heated smoking device provided in one embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a heated smoking device provided in another embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of a heating smoking device provided in yet another embodiment of the present invention.

[0022] in:

[0023] 1 is the smoking device body; 2 is the heating chamber; 3 is the hydrophobic and oleophobic coating; 4 is the power module; 5 is the power drive module; 6 is the heating needle / piece. DETAILED DESCRIPTION

[0024] The core of the present invention is to provide a heated smoking device, the structural design of which can reduce the residual tobacco oil in the heating chamber of the heated smoking device.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 , Figure 1 A cross-sectional view of a heated smoking device provided in accordance with an embodiment of the present invention.

[0027] Disclosed in an embodiment of the present invention is a heated smoking device including a smoking device body 1, wherein the smoking device body 1 is provided with a heating chamber 2 for inserting tobacco products, wherein the inner diameter of the heating chamber 2 is adapted to the outer diameter of the tobacco products, and the cavity wall of the heating chamber 2 is provided with a hydrophobic and oleophobic coating 3, wherein the contact angles of the hydrophobic and oleophobic coating 3 with water and oil are both greater than or close to 120°. The hydrophobic and oleophobic coating 3 is composed of 40 to 60 weight percent of nano-tungsten oxide, 6 to 14 weight percent of nano-titanium dioxide, 5 to 10 weight percent of nano-zinc oxide, and the remainder is silicon dioxide and / or catalytic component additives.

[0028] It can be seen that compared with the prior art, a hydrophobic and oleophobic coating 3 is provided in the heating chamber 2 of the smoking device body 1 of the heating smoking device provided in the embodiment of the present invention. When the contact angle of the coating with water or oil is greater than 90°, the coating is a hydrophobic and oleophobic coating. When the contact angle of the coating with water or oil is less than 90°, the coating is a hydrophilic and oleophilic coating. Therefore, in this case, the contact angles of the above-mentioned hydrophobic and oleophobic coating 3 with water or oil are greater than or close to 120°, so that it has good hydrophobic and oleophobic properties, which can effectively reduce the condensation and adhesion of the smoke oil, promote the volatilization and precipitation of the smoke oil, and help to clean the smoking device and reduce smoke oil residue.

[0029] Specifically, in an embodiment of the present invention, the hydrophobic and oleophobic coating 3 is composed of 40 to 60 weight percent of nano-tungsten oxide, 6 to 14 weight percent of nano-titanium dioxide, 5 to 10 weight percent of nano-zinc oxide, and the balance is silicon dioxide and / or catalytic component additives. This hydrophobic and oleophobic coating 3 has strong stability at high temperatures, and by adding a small amount of nano-zinc oxide and nano-titanium dioxide, the oleophobic effect of the hydrophobic and oleophobic coating 3 and the effect of resisting corrosion by acidic components in the smoke oil can be enhanced. The above components make the hydrophobic and oleophobic coating 3 have better hydrophobic and oleophobic properties, which can effectively reduce the condensation and adhesion of the smoke oil, promote the volatilization and precipitation of the smoke oil, and help clean the smoking device and reduce the residue of the smoke oil. On this basis, catalytic component additives can be added to enable the hydrophobic and oleophobic coating 3 to have a catalytic cracking effect on the smoke oil under the operating temperature of the heating smoking device of 200°C to 300°C, thereby cracking the macromolecular components in the smoke oil into more volatile small molecules during the operation of the heating smoking device, which can further effectively reduce the residue of the smoke oil in the heating chamber 2.

[0030] In the embodiment of the present invention, the thickness of the hydrophobic and oleophobic coating 3 may be 0.01 to 1 mm, preferably 0.1 to 0.3 mm.

[0031] It should be noted that in the embodiments of the present invention, the catalytic component additive is at least one of calcium oxide, magnesium oxide, a transition metal oxide, and precious metal nanoparticles. The transition metal oxide is at least one of nickel oxide, cobalt oxide, iron oxide, and copper oxide, and the precious metal nanoparticles are at least one of ruthenium, rhodium, palladium, osmium, iridium, and platinum.

[0032] In one embodiment of the present invention, the walls of the heating chamber 2 of the heated smoking device are coated with a dense hydrophobic and oleophobic coating 3. The coating 3 comprises 50 weight percent nano-tungsten oxide, 10 weight percent nano-titanium dioxide, 8 weight percent nano-zinc oxide, 5 weight percent calcium oxide, 5 weight percent nickel oxide, 2 weight percent nano-platinum, and 20 weight percent silicon dioxide. The coating 3 provides hydrophobic and oleophobic properties to the walls of the heated smoking device's heating chamber 2, as well as catalytically cracking e-liquid, effectively reducing residual e-liquid.

[0033] In another embodiment of the present invention, the walls of the heating chamber 2 of a heated smoking device are coated with a dense hydrophobic and oleophobic coating 3. The coating 3 comprises 60 weight percent nano-tungsten oxide, 10 weight percent nano-titanium dioxide, 8 weight percent nano-zinc oxide, and 22 weight percent silicon dioxide. While the coating 3 provides hydrophobic and oleophobic properties, it lacks the ability to catalyze the cracking of tobacco oil due to the absence of a catalytic additive. However, it can still reduce residual tobacco oil on the walls of the heating chamber 2 to a certain extent.

[0034] In another embodiment of the present invention, Figure 2 As shown, a heating needle / piece 6 for inserting into tobacco products is provided in the heating chamber 2. It should be noted that one or more heating needles / pieces 6 can be provided. When only one heating needle / piece 6 is provided, the heating needle / piece 6 is preferably coaxially arranged with the heating chamber 2. A hydrophobic and oleophobic coating 3 may be provided on the outer surface of the heating needle / piece 6, or a hydrophobic and oleophobic coating 3 may not be provided. For example, the operating temperature of the heating needle / piece 6 may be set higher than the operating temperature of the cavity wall of the heating chamber 2, so that the cavity wall temperature of the heating chamber 2 is lower than the center position of the heating chamber 2, so that the tobacco oil is more likely to remain on the cavity wall of the heating chamber 2. In this way, it is only necessary to provide a hydrophobic and oleophobic coating 3 on the cavity wall of the heating chamber 2. Of course, a hydrophobic and oleophobic coating 3 may also be provided on the outer surface of the heating needle / piece 6 and the cavity wall of the heating chamber 2 at the same time. Figure 3 The embodiment shown.

[0035] It can be foreseen that the heated smoking device also includes a heating component, which includes a power module 4, a power drive module 5 and a heating module. The power module 4 and the power drive module 5 are arranged in the smoking device body 1. The power module 4 is connected to the heating module through the power drive module 5. The power drive module 5 is used to adjust the output power of the power supply, thereby realizing the control of the temperature in the heating chamber 2. The heating module is arranged in the cavity wall of the heating chamber 2 and / or the heating needle / sheet 6.

[0036] Existing tobacco products have different diameters, and a heating chamber 2 with a single inner diameter is difficult to adapt to tobacco products of various diameters, resulting in limited application of heated tobacco products. Therefore, in a preferred embodiment of the present invention, the heating module is at least arranged on the cavity wall of the heating chamber 2, and a plurality of heating modules that can be radially telescopically moved along the cavity wall of the heating chamber 2 are arranged on the cavity wall of the heating chamber 2 at intervals along the circumference. The heated tobacco product also includes a driving device, which is transmission-connected to the heating modules on the cavity wall of the heating chamber 2. The driving device is used to drive the heating modules on the cavity wall of the heating chamber 2 to move closer to or away from each other to clamp tobacco products of different diameters.

[0037] In the above embodiment, the heating needle / piece 6 is coaxially arranged with the heating chamber 2 to ensure that the clamping force of each heating module on the cavity wall of the heating chamber 2 is the same, ensuring that each heating module on the cavity wall of the heating chamber 2 can clamp and fix the tobacco product.

[0038] To further optimize the above technical solution, the heated smoking device also includes a temperature detection component, which includes a temperature sensor and a control module. The control module is respectively communicated with the temperature sensor and the power drive module 5. The temperature sensor is used to detect the temperature in the heating chamber 2. The control module is used to control the output power of the power drive module 5 according to the detection value of the temperature sensor, so that the output power of the power supply can be adjusted according to the temperature in the heating chamber 2, thereby reducing energy consumption and making the heated smoking device have better endurance.

[0039] The hydrophobic and oleophobic coating 3 with nano-tungsten oxide as the main component has hydrophobic and oleophobic properties and strong stability at high temperatures. The small amount of nano-zinc oxide and nano-titanium dioxide in the hydrophobic and oleophobic coating 3 has the effect of enhancing the oleophobic effect of the coating and resisting corrosion by acidic components in the tobacco oil. The above components make the hydrophobic and oleophobic coating 3 have good hydrophobic and oleophobic properties, which can effectively reduce the condensation and adhesion of the tobacco oil, promote the volatilization and precipitation of the tobacco oil, and help to clean the tobacco device and reduce tobacco oil residue. On this basis, catalytic component additives can be added to enable the hydrophobic and oleophobic coating 3 to have a catalytic cracking effect on the tobacco oil under the operating temperature of the heating tobacco device of 200℃~300℃, so that the large molecular components in the tobacco oil can be cracked into more volatile small molecules during the operation of the heating tobacco device, which can further effectively reduce the residue of tobacco oil in the heating chamber 2.

[0040] In another embodiment of the present invention, Figure 2As shown, a heating needle 6 for inserting into the tobacco product is provided in the heating chamber 2. It should be noted that one or more heating needles 6 can be provided. When only one heating needle 6 is provided, the heating needle 6 is preferably coaxially arranged with the heating chamber 2. A hydrophobic and oleophobic coating 3 can be provided on the outer surface of the heating needle 6, or a hydrophobic and oleophobic coating 3 can be provided. For example, the working temperature of the heating needle 6 can be set higher than the working temperature of the cavity wall of the heating chamber 2, so that the cavity wall temperature of the heating chamber 2 is lower than the center position of the heating chamber 2, so that the tobacco oil is more likely to remain on the cavity wall of the heating chamber 2. In this way, it is only necessary to provide a hydrophobic and oleophobic coating 3 on the cavity wall of the heating chamber 2. Of course, a hydrophobic and oleophobic coating 3 can also be provided on the outer surface of the heating needle 6 and the cavity wall of the heating chamber 2 at the same time. Figure 3 The embodiment shown.

[0041] It can be foreseen that the heated smoking device also includes a heating component, which includes a power module 4, a power drive module 5 and a heating module. The power module 4 and the power drive module 5 are arranged in the smoking device body 1. The power module 4 is connected to the heating module through the power drive module 5. The power drive module 5 is used to adjust the output power of the power supply, thereby realizing the control of the temperature in the heating chamber 2. The heating module is arranged in the cavity wall of the heating chamber 2 and / or the heating needle 6.

[0042] Existing tobacco products have different diameters, and a heating chamber 2 with a single inner diameter is difficult to adapt to tobacco products of various diameters, resulting in limited application of heated tobacco products. Therefore, in a preferred embodiment of the present invention, the heating module is at least arranged on the cavity wall of the heating chamber 2, and a plurality of heating modules that can be radially telescopically moved along the cavity wall of the heating chamber 2 are arranged on the cavity wall of the heating chamber 2 at intervals along the circumference. The heated tobacco product also includes a driving device, which is transmission-connected to the heating modules on the cavity wall of the heating chamber 2. The driving device is used to drive the heating modules on the cavity wall of the heating chamber 2 to move closer to or away from each other to clamp tobacco products of different diameters.

[0043] In the above embodiment, the heating needle 6 is coaxially arranged with the heating chamber 2 to ensure that the clamping force of each heating module on the cavity wall of the heating chamber 2 is the same, and to ensure that each heating module on the cavity wall of the heating chamber 2 can clamp and fix the tobacco product.

[0044] To further optimize the above technical solution, the heated smoking device also includes a temperature detection component, which includes a temperature sensor and a control module. The control module is respectively communicated with the temperature sensor and the power drive module 5. The temperature sensor is used to detect the temperature in the heating chamber 2. The control module is used to control the output power of the power drive module 5 according to the detection value of the temperature sensor, so that the output power of the power supply can be adjusted according to the temperature in the heating chamber 2, thereby reducing energy consumption and making the heated smoking device have better endurance.

[0045] Specifically, the catalytic additive in the hydrophobic and oleophobic coating 3 is at least one of calcium oxide, magnesium oxide, a transition metal oxide, and precious metal nanoparticles. The transition metal oxide is one of nickel oxide, cobalt oxide, iron oxide, and copper oxide. The precious metal nanoparticles are one of ruthenium, rhodium, palladium, osmium, iridium, and platinum.

[0046] In one embodiment of the present invention, the walls of the heating chamber 2 of the heated smoking device are coated with a dense hydrophobic and oleophobic coating 3. The coating 3 comprises 50 weight percent nano-tungsten oxide, 10 weight percent nano-titanium dioxide, 8 weight percent nano-zinc oxide, 5 weight percent calcium oxide, 5 weight percent nickel oxide, 2 weight percent nano-platinum, and 20 weight percent silicon dioxide. The coating 3 provides hydrophobic and oleophobic properties to the walls of the heated smoking device's heating chamber 2, as well as catalytically cracking e-liquid, effectively reducing residual e-liquid.

[0047] In another embodiment of the present invention, the walls of the heating chamber 2 of a heated smoking device are coated with a dense hydrophobic and oleophobic coating 3. The coating 3 comprises 60 weight percent nano-tungsten oxide, 10 weight percent nano-titanium dioxide, 8 weight percent nano-zinc oxide, and 22 weight percent silicon dioxide. While the coating 3 provides hydrophobic and oleophobic properties, it lacks the ability to catalyze the cracking of tobacco oil due to the absence of a catalytic additive. However, it can still reduce residual tobacco oil on the walls of the heating chamber 2 to a certain extent.

[0048] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heated smoking device, characterized in that: The invention comprises a smoking device body, wherein the smoking device body is provided with a heating chamber for inserting tobacco products, and the cavity wall of the heating chamber is provided with a hydrophobic and oleophobic coating, and the contact angles of the hydrophobic and oleophobic coating with water and oil are both greater than 120°. The hydrophobic and oleophobic coating is composed of 40-60 weight percent of nano-tungsten oxide, 6-14 weight percent of nano-titanium dioxide, 5-10 weight percent of nano-zinc oxide, and the remainder is silicon dioxide and catalytic component additives. The catalytic component additive is at least one of calcium oxide, magnesium oxide, transition metal oxide, and precious metal nanoparticles. The transition metal oxide is at least one of nickel oxide, cobalt oxide, iron oxide, and copper oxide. The precious metal nanoparticles are at least one of ruthenium, rhodium, palladium, osmium, iridium, and platinum.

2. The heated smoking device according to claim 1, characterized in that: The thickness of the hydrophobic and oleophobic coating is 0.01-1 mm.

3. The heated smoking device according to claim 2, characterized in that: The thickness of the hydrophobic and oleophobic coating is 0.1-0.3 mm.

4. The heated smoking device according to any one of claims 1 to 3, characterized in that: The heating cavity is provided with a heating needle / piece for inserting into the tobacco product.

5. The heated smoking device according to claim 4, characterized in that: The surface of the heating needle / sheet is provided with the hydrophobic and oleophobic coating.

6. The heated smoking device according to claim 4, characterized in that: It also includes a heating component, which includes a power supply module, a power drive module and a heating module. The power supply module and the power drive module are arranged in the smoking device body. The power supply module is connected to the heating module through the power drive module. The heating module is arranged in the cavity wall of the heating cavity and / or the heating needle / sheet.

Images