An isolated heating element and its use

Abstract

The present invention belongs to the field of new smoking device heating elements, and in particular, relates to an isolated heating element and its use. The heating element comprises a heating cup (1) and a heating element (2); the heating cup (1) is a hollow cylindrical structure having a hollow cavity; the heating element (2) is arranged below the bottom of the heating cup (1), and is isolated from the hollow cavity by the heating cup (1). The present invention also discloses the use of the above heating element. The heating cup of the present invention is a cup-shaped container with a sealed bottom, and the bottom separates the heating element and the smoking product. Therefore, the generated smoke will not have a peculiar smell, and the taste is purer, which can maintain the original taste of the smoking product.

Description

Technical Field

[0001] The invention belongs to the field of novel smoking article heating elements, and in particular relates to an isolated heating element and a use thereof. Background Art

[0002] Heat-not-burn cigarettes are a new type of tobacco product that produces smoke for smokers to inhale by heating smoking products. They have the characteristics of "heating tobacco or tobacco extracts instead of burning them". When smoking, heating devices and "smoke cartridges" are required. The extracts in the "smoke cartridges" are heated by the special heating source of the heating device, thereby volatilizing nicotine and flavor substances in the tobacco, and producing smoke to meet the needs of smokers. Compared with traditional cigarettes, heat-not-burn cigarettes have no combustion process and do not produce harmful substances such as tar and carbon monoxide, which greatly reduces the harm of smoking to consumers and people around them.

[0003] When heating some irregular smoking products, such as tobacco paste, tobacco liquid or tobacco particles, the prior art uses a heating wire that directly contacts such smoking products, which causes the following problems:

[0004] 1. The heating wire is thin or fine and directly exposed to the air environment. The heating wire is easily oxidized and its performance deteriorates. To avoid this, it is usually necessary to use precious metal materials such as platinum to make the heating wire, which is very expensive and has a complicated processing process;

[0005] 2. If non-precious metal heating wires are used, special coatings are usually applied to the outer surface of the heating wires to prevent them from being oxidized in the air environment. The material of the non-precious metal heating wires, especially the surface coatings, will produce volatile components when heated, resulting in peculiar smells in the generated smoke and impure taste.

[0006] 3. The residual smoke material from the previous puff will remain on the surface of the heating wire. The residual material adhering to the surface of the heating wire is very difficult to clean. If the cleaning force is weak, it will not be cleaned completely. If the cleaning force is strong, it will easily damage the heating wire. If the solvent is used for cleaning, there is a worry that the solvent will penetrate into the electronic circuit part inside the smoking device and cause a short circuit or corrosion. If the cleaning is not sufficient, the residual material will decompose under heat and produce a burnt smell, resulting in an impure taste.

[0007] 4. The heating wire is placed inside the smoking material accommodating chamber. Due to the processing tolerances of various components, there are inevitable assembly gaps between the components when they are assembled into an integral smoking device. The smoking material accommodating chamber cannot be completely sealed at the bottom or sides. Therefore, when heating and inhaling liquid smoking materials, the liquid smoking materials may leak along these gaps to other parts of the smoking device, causing pollution, corrosion or short circuit. Summary of the invention

[0008] The present invention is proposed to solve the above-mentioned problems.

[0009] A first aspect of the present invention is an isolated heating element, the heating element comprising a heating cup 1 and a heating element 2;

[0010] Wherein, the heating cup 1 is a hollow cylindrical structure with a hollow cavity;

[0011] The heating element 2 is disposed below the bottom of the heating cup 1 and is isolated from the hollow cavity by the heating cup 1 .

[0012] The hollow cavity of the heating cup 1 is used to accommodate smoking articles of regular or irregular shapes.

[0013] Preferably, the heating element 2 can be arranged below the bottom of the heating cup 1 by physical compounding or thick film printing.

[0014] Preferably, the heating cup 1 is an H-shaped hollow cylindrical structure. The heating cup 1 comprises an upper hollow cavity and a lower hollow cavity, and the bottom of the cup is between the two cavities. The depth of the upper hollow cavity is greater than the depth of the lower hollow cavity.

[0015] Preferably, the heating element further comprises an insulating fixing seat 3, which is arranged below the bottom of the heating cup 1 and in the lower hollow cavity of the H-shaped hollow cylindrical structure.

[0016] Preferably, the heating element further comprises a heat-insulating base 4, which is arranged below the fixing base 3 and in the lower hollow cavity of the H-shaped hollow cylindrical structure.

[0017] The size of the insulating fixing seat 3 and the insulating base 4 and the size of the lower cavity of the H-shaped hollow cylinder can be selected so that they are in close contact with each other to achieve airtightness. Furthermore, sealant can be applied at the place where they are in close contact with each other to further ensure the airtightness. The heating wire in such an airtight environment can effectively avoid being oxidized by oxygen in the ambient air, thereby protecting the heating wire.

[0018] Preferably, the heating cup 1 is made of ceramic or glass.

[0019] Preferably, the heating element 2 is a spiral disc structure, the diameter of the spiral disc is adapted to the diameter of the heating cup 1, and conductive pins are provided at both ends of the heating element 2. The conductive pins are used to connect to a power source for heating, and the material of the heating element 2 is selected from at least one of nickel, iron, titanium, aluminum and other metals. Preferably, the heating element 2 is a nickel wire.

[0020] Preferably, the heating element 2 can be embedded and fixed in the fixing seat 3 .

[0021] The working temperature of the heating element 2 is 200-450°C.

[0022] Preferably, the fixing seat 3 is made of a flexible material and does not deform within 350 degrees Celsius. The fixing seat 3 is selected from materials such as aerogel, asbestos, carbon fiber, glass fiber or carbon nanofiber.

[0023] Preferably, the heat-insulating base 4 is made of a rigid material and does not deform within 300 degrees Celsius. The heat-insulating base 4 is used to encapsulate the heating element 2 and the fixing base 3 installed above as a whole, so that the heating element 2 does not separate from the bottom of the heating cup 1. Preferably, the heat-insulating base 4 is made of ceramic glue.

[0024] Preferably, the conductive pins arranged at both ends of the heating element 2 pass through the fixing seat 3 and the heat insulation base 4 and are led out.

[0025] The fixing seat 3 and the heat-insulating base 4 are provided with grooves or through holes at both ends, and the sizes of the grooves or through holes are adapted to the pins of the heating element 2. The pins provided at both ends of the heating element 2 pass through the fixing seat 3 and the heat-insulating base 4 through the grooves or through holes to be led out and connected to the power supply.

[0026] The second aspect of the present invention provides a use of the isolated heating element described in the first aspect for maintaining the original flavor of a smoking article.

[0027] The above technical solutions can be freely combined under the premise of no contradiction.

[0028] The present invention has the following beneficial effects:

[0029] 1. The heating cup of the present invention is a cup-shaped container with a sealed bottom, which separates the heating element and the smoking product. Therefore, the smoke produced will not have a peculiar smell, and the taste is purer, and the original taste of the smoking product can be maintained.

[0030] 2. The upper heating chamber of the heating cup is sealed to hold the smoking product, and the residue of the smoking product is easy to clean, clean and hygienic. At the same time, because the bottom of the heating cup is completely sealed, it prevents the liquid substances generated during the suction process from leaking into the control circuit under the heating element and corroding the components.

[0031] 3. In the preferred technical solution, the heating cup is an H-shaped hollow cylindrical structure, and the heating element, insulating fixing seat and heat-insulating base are arranged in the lower hollow cavity, and only the conductive pin of the heating element is led out. Therefore, the sealing performance of the entire heating cup is good. By selecting a suitable fixing seat and heat-insulating base, and adding sealant, the heating wire can be placed in a completely airtight cavity to effectively avoid oxidation. Therefore, there is no need to use expensive platinum heating wires, nor is it necessary to use non-precious metal heating wires with special surface coatings, which broadens the choice of heating wire materials and makes it easier to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a disassembled diagram of the heating body of Example 1.

[0033] Figure 2 This is a cross-sectional view of the heating body of Example 1.

[0034] List of reference numerals:

[0035] 1- heating cup, 2- heating element, 3- fixing seat, 4- heat insulation base. DETAILED DESCRIPTION

[0036] The content of the present invention is further explained below through specific implementation examples.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, an isolated heating element mainly includes a heating cup 1, a heating body 2, a fixing seat 3 and an insulating base 4.

[0039] The heating cup 1 is an H-shaped hollow cylindrical glass cup, which is used to accommodate smoking products of irregular shapes.

[0040] The heating element 2 is configured as a spiral coil of nickel wire, the diameter of the spiral coil is slightly smaller than the diameter of the heating cup 1, conductive pins are provided at both ends of the heating element 2, and the heating element 2 is physically composited and arranged below the bottom of the heating cup 1. The operating temperature of the heating element 2 is 200-450°C.

[0041] A fixing seat 3 is installed at the lower part of the heating element 2. The fixing seat 3 is a cylindrical structure as a whole. The material is a flexible and insulating aerogel, which can withstand high temperatures of at least 350°C. The heating element 2 can be fixed in an embedded manner. The fixing seat 3 is stuck in the hollow cavity at the lower part of the heating cup 1.

[0042] An insulating base 4 is installed below the fixing base 3 and is stuck in the hollow cavity at the bottom of the heating cup 1. The insulating base 4 is a cylindrical structure as a whole, and is resistant to high temperatures of at least 300°C. It is a ceramic glue with a certain rigidity, and is used to encapsulate the heating element 2 and the fixing base 3 installed above as a whole, so that the heating element 2 will not fall off the bottom of the heating cup 1.

[0043] The fixing seat 3 and the heat-insulating base 4 are provided with grooves at both ends, and the size of the grooves is adapted to the pins of the heating element 2. The pins provided at both ends of the heating element 2 pass through the fixing seat 3 and the heat-insulating base 4 through the grooves, and pass through the side wall of the lower hollow cavity of the heating cup 1 to be connected to the power supply.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An isolated heating element, characterized in that: The heating element comprises a heating cup (1) and a heating element (2); Wherein, the heating cup (1) is a hollow cylindrical structure having a hollow cavity; The heating element (2) is arranged below the bottom of the heating cup (1) and is isolated from the hollow cavity by the heating cup (1); The heating cup (1) is an H-shaped hollow cylindrical structure; The heating element further comprises an insulating fixing seat (3) and a heat-insulating base (4) arranged below the insulating fixing seat (3), both of which are arranged below the bottom of the heating cup (1) and in the lower hollow cavity of the H-shaped hollow cylindrical structure; The lower hollow cavity of the H-shaped hollow cylindrical structure is an airtight hollow cavity; The heating element (2) is arranged below the bottom of the heating cup (1) by means of physical compounding or thick film printing; The fixing seat (3) is made of a flexible material and does not deform within 350 degrees Celsius. The heating element (2) can be embedded and fixed in the fixing seat (3); The heat-insulating base (4) is made of a rigid material and does not deform within 300 degrees Celsius; The heating element (2) is a spiral disk structure, the diameter of the spiral disk is compatible with the diameter of the heating cup (1), and conductive pins are provided at both ends of the heating element (2).

2. The heating element according to claim 1, characterized in that The heating cup (1) is made of ceramic or glass.

3. Use of the isolated heating element according to claim 1 for maintaining the original flavor of a smoking product.

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