Heating structure for circumferential heating non-combustion appliance

Abstract

The utility model discloses a heating structure used for circumferential heating non-combustion utensil, which comprises an upper support seat (1) and a lower support seat (2), an outer metal pipe (3) and a heat insulation pipe (4) are fixedly arranged between the upper support seat (1) and the lower support seat (2), and the outer metal pipe (3) and the heat insulation pipe (4) are coaxially arranged. A heat insulation cavity (5) is formed between the inner wall of the outer metal pipe (3) and the outer wall of the heat insulation pipe (4), a heating structure is fixedly arranged in the heat insulation pipe (4), and the length of the heating structure is smaller than that of the heat insulation pipe (4). The heat conduction efficiency can be effectively improved, and the problem that the outer shell of the circumferential heating non-combustion appliance is overheated is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of heating structure for circumferential heating non-combustion appliance, belong to heating non-combustion appliance technical field. BACKGROUND

[0002] With the improvement of people's living standards, people pay more and more attention to health, and more and more people who like to smoke seek a method that can solve the demand for smoking and reduce the harm to the body as much as possible.

[0003] Heated tobacco is a new type of tobacco product, which heats the tobacco in the heated tobacco through a heated non-combustion appliance to volatilize nicotine and flavoring substances in the tobacco, and produces smoke to meet the needs of smokers, rather than by burning tobacco. This heating method is different from the traditional combustion method, which avoids complex chemical reactions at high temperatures and reduces the generation of harmful substances, and is favored by more and more people.

[0004] In the prior art, the heated non-combustion appliance mainly includes a central heating type appliance and a circumferential heating type appliance. The circumferential heating type appliance directly contacts the heating cylinder with the support end at both ends, which causes the heat on the heating cylinder to be transferred to the support end, and then to the outer shell through the support end. This results in overheating of the outer shell during use, which causes the user to be scalded. In addition, the heat loss reduces the heat conduction efficiency. SUMMARY

[0005] The utility model aims to provide a kind of heating structure for circumferential heating non-combustion appliance, to solve the technical problems in the prior art, it can effectively improve heat conduction efficiency and solve the problem of overheating of the outer shell of the heated non-combustion appliance.

[0006] The utility model provides a kind of heating structure for circumferential heating non-combustion appliance, including upper support seat and lower support seat, the upper support seat with the lower support seat between fixed with outer metal pipe and heat insulation pipe, the outer metal pipe with the heat insulation pipe coaxial setting, the inner wall of the outer metal pipe with the outer wall of the heat insulation pipe forms heat insulation cavity, the heat insulation pipe is fixed with heating structure, the length of the heating structure is less than the length of the heat insulation pipe.

[0007] In the foregoing heating structure for circumferential heating non-combustion appliance, preferably, the lower end of the upper support seat forms a first support ring and a second support ring, the inner diameter of the second support ring is greater than the outer diameter of the first support ring, the upper end of the heat insulation pipe is connected with the first support ring, and the second support ring is connected with the upper end of the outer metal pipe.

[0008] Preferably, the outer diameter of the lower support seat is equal to the inner diameter of the outer metal tube, the lower support seat is in plug-in connection with the lower end of the outer metal tube, and the upper end of the lower support seat is formed with a third support ring, the outer diameter of the third support ring is equal to the inner diameter of the heat insulation tube, and the third support ring is in plug-in connection with the lower end of the heat insulation tube.

[0009] Preferably, the upper support seat and the lower support seat are made of the same material, and are made of high-temperature-resistant plastic material or ceramic material.

[0010] Preferably, the heat insulation tube is composed of 5-10 PI films.

[0011] Preferably, the heating structure comprises an inner metal tube, an insulation layer and a resistance sheet, the insulation layer is wrapped on the outer wall of the inner metal tube, the resistance sheet is arranged between the insulation layer and the heat insulation tube, one side of the resistance sheet is fixedly connected with the insulation layer, the other side of the resistance sheet is fixedly connected with the heat insulation tube, and the wiring end of the resistance sheet penetrates through the lower support seat.

[0012] Preferably, the insulation layer is a PI film.

[0013] Compared with the prior art, the utility model discloses a lower support seat and upper support seat, and the outer metal tube and the heat insulation tube are fixed between the upper support seat and the lower support seat, the outer metal tube and the heat insulation tube are coaxially arranged, the heat insulation cavity is formed between the inner wall of the outer metal tube and the outer wall of the heat insulation tube, the heating structure is fixed in the heat insulation tube, and the length of the heating structure is less than the length of the heat insulation tube. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the isometric view of the utility model;

[0015] Figure 2 is the half sectional view of the utility model;

[0016] Figure 3 is Figure 2 is the enlarged view of A of the;

[0017] Figure 4 is the isometric view of the upper support seat;

[0018] Figure 5 This is an isometric view of the lower support.

[0019] Figure 6 This is an isometric view of the heating structure.

[0020] Explanation of reference numerals in the attached drawings: 1. Upper support base; 2. Lower support base; 3. Outer metal tube; 4. Heat insulation tube; 5. Heat insulation cavity; 6. First support ring; 7. Second support ring; 8. Third support ring; 9. Inner metal tube; 10. Insulating layer; 11. Resistance element; 12. Through hole for resistance element wiring terminal. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] Embodiments of this utility model: such as Figures 1-6 As shown, a heating structure for a circumferentially heated non-combustible appliance includes an upper support base 1 and a lower support base 2. An outer metal tube 3 and a heat insulation tube 4 are fixed between the upper support base 1 and the lower support base 2. The outer metal tube 3 and the heat insulation tube 4 are coaxially arranged. A heat insulation cavity 5 is formed between the inner wall of the outer metal tube 3 and the outer wall of the heat insulation tube 4. A heating structure is fixed inside the heat insulation tube 4. The length of the heating structure is less than the length of the heat insulation tube 4.

[0023] The upper support 1, the lower support 2, and the outer metal tube 3 form a support structure and play a supporting role. The heat insulation tube 4 mainly plays a heat insulation role. The outer diameter of the heat insulation tube 4 is smaller than the inner diameter of the outer metal tube 3, that is, there is a certain gap between the outer wall of the heat insulation tube 4 and the interior of the outer metal tube 3. The space between the two, together with the lower support 2 and the upper support 1, forms a closed space, which is the heat insulation cavity 5. The heat insulation cavity 5 can effectively block the transfer of heat.

[0024] In addition, the length of the heating structure is less than the length of the heat insulation pipe 4. This means that the upper end of the heating structure is not connected to the upper support 1, and the lower end of the heating structure is not connected to the lower support 2. This greatly reduces the heat transferred from the heating structure to both ends, effectively reduces heat loss, and improves heat utilization efficiency.

[0025] Specifically, the lower end of the upper support 1 is formed with a first support ring 6 and a second support ring 7. The inner diameter of the second support ring 7 is larger than the outer diameter of the first support ring 6. The upper end of the heat insulation pipe 4 is inserted into the first support ring 6, and the second support ring 7 is inserted into the upper end of the outer metal pipe 3.

[0026] The inner diameter of the first supporting ring 6 is equal to the outer diameter of the heat insulation pipe 4, the upper end of the heat insulation pipe 4 is inserted into the interior of the first supporting ring 6, the first supporting ring 6 plays a role of limiting the upper end of the heat insulation pipe 4, the outer diameter of the second supporting ring 7 is equal to the inner diameter of the outer metal pipe 3, the second supporting ring 7 is inserted into the interior of the upper end of the outer metal pipe 3, and the second supporting ring 7 plays a role of connecting the upper end of the outer metal pipe 3.

[0027] Further, the outer diameter of the lower supporting seat 2 is equal to the inner diameter of the outer metal pipe 3, the lower supporting seat 2 is connected in a plug-in manner with the lower end of the outer metal pipe 3, and the upper end of the lower supporting seat 2 is formed with a third supporting ring 8, the outer diameter of the third supporting ring 8 is equal to the inner diameter of the heat insulation pipe 4, and the third supporting ring 8 is connected in a plug-in manner with the lower end of the heat insulation pipe 4.

[0028] The lower supporting seat 2 is inserted into the interior of the lower end of the outer metal pipe 3, which can prevent the lower end of the outer metal pipe 3 from being deformed, and the third supporting ring 8 is inserted into the interior of the lower end of the heat insulation pipe 4, which can also play a role of preventing the lower end of the heat insulation pipe 4 from being deformed.

[0029] The upper supporting seat 1 and the lower supporting seat 2 are made of the same material, which is a high-temperature-resistant plastic material or a ceramic material. The specific material can be freely selected according to requirements, and other high-temperature-resistant materials can also be used.

[0030] In the embodiment, the heat insulation pipe 4 is composed of 5-10 layers of PI film. The thickness of each layer of PI film is preferably 0.025 mm. The PI film has good heat insulation and insulation capacity, and 5-10 layers of PI can effectively block the transfer of heat outward. In the embodiment, the heat insulation pipe 4 is preferably composed of 5 layers of PI film.

[0031] Further, the heating structure comprises an inner metal pipe 9, an insulation layer 10 and a resistance sheet 11, the insulation layer 10 is wrapped on the outer wall of the inner metal pipe 9, the resistance sheet 11 is arranged between the insulation layer 10 and the heat insulation pipe 4, one side of the resistance sheet 11 is fixedly connected with the insulation layer 10, the other side of the resistance sheet 11 is fixedly connected with the heat insulation pipe 4, and the wiring end of the resistance sheet 11 penetrates through the lower supporting seat 2.

[0032] The inner metal pipe 9 plays a role of uniform heating, so that the heat generated by the resistance sheet 11 is uniformly conducted. The resistance sheet 11 is wrapped outside the insulation layer 10, and can generate heat after being electrified. In the embodiment, the resistance sheet 11 has three wiring ends, and the lower supporting seat 2 is provided with three resistance sheet wiring end through holes 12, and the three wiring ends penetrate through the lower supporting seat 2 through the three resistance sheet wiring end through holes 12.

[0033] The insulating layer 10 is a PI film with a thickness of 0.025 mm. The PI film has good heat insulation and insulation effects, but setting the PI film with a thickness of 0.025 mm does not affect the heat transfer due to the small thickness, but still has good insulation effects, so the embodiment adopts the PI film with a thickness of 0.025 mm as the insulating layer 10, which not only ensures the heat conduction efficiency, but also has insulation effects.

[0034] The resistance sheet 11 is located between the insulating layer 10 and the heat insulation pipe 4, which can effectively prevent the resistance sheet 11 from being oxidized, and improve the service life of the resistance sheet 11.

[0035] The working principle of the utility model is as follows: the resistance sheet 11 generates heat after being electrified, and the heat is transmitted to the inner metal pipe 9 through the insulating layer 10; the inner metal pipe 9 can make the heat quickly and uniformly distributed; since the two ends of the inner metal pipe 9 are not connected with the upper support seat 1 and the lower support seat 2, only a small amount of heat is transmitted to the upper support seat 1 and the lower support seat 2 through the heat insulation pipe 4, which greatly improves the heat utilization rate; the heat insulation pipe 4 can effectively block the heat from being transmitted to the outer metal pipe 3, and the heat loss can be further reduced through the heat insulation cavity 5. The utility model has higher heat transfer efficiency and heat utilization rate, and can effectively solve the problem of hot shell.

[0036] The above embodiment according to the drawings illustrates the structure, features and effect of the utility model, and the above description is only a preferred embodiment of the utility model, but the utility model is not limited by the drawings, any changes or modifications made according to the concept of the utility model, or equivalent embodiments with equivalent changes, as long as they are within the scope of the utility model.

Claims

1. A heating structure for a circumferential heating non-combustible appliance, comprising an upper support seat (1) and a lower support seat (2), characterized in that: The upper support seat (1) and the lower support seat (2) are fixed with an outer metal pipe (3) and a heat insulation pipe (4), the outer metal pipe (3) and the heat insulation pipe (4) are coaxially arranged, a heat insulation cavity (5) is formed between the inner wall of the outer metal pipe (3) and the outer wall of the heat insulation pipe (4), a heating structure is fixed in the heat insulation pipe (4), and the length of the heating structure is less than the length of the heat insulation pipe (4).

2. The heating structure for a circumferential heating non-combustible appliance according to claim 1, characterized in that: The lower end of the upper support seat (1) is formed with a first support ring (6) and a second support ring (7), the inner diameter of the second support ring (7) is greater than the outer diameter of the first support ring (6), the upper end of the heat insulation pipe (4) is connected with the first support ring (6) in a plug-in manner, and the second support ring (7) is connected with the upper end of the outer metal pipe (3) in a plug-in manner.

3. The heating structure for a circumferential heating non-combustible appliance according to claim 2, characterized in that: The outer diameter of the lower support seat (2) is equal to the inner diameter of the outer metal pipe (3), the lower end of the lower support seat (2) is connected with the outer metal pipe (3) in a plug-in manner, and the upper end of the lower support seat (2) is formed with a third support ring (8), the outer diameter of the third support ring (8) is equal to the inner diameter of the heat insulation pipe (4), and the third support ring (8) is connected with the lower end of the heat insulation pipe (4) in a plug-in manner.

4. The heating structure for a circumferentially heated non-combustible device according to claim 1 or 2 or 3, characterized in that: The upper support seat (1) and the lower support seat (2) are made of the same material, which is high-temperature-resistant plastic material or ceramic material.

5. The heating structure for a circumferential heating non-combustible appliance according to claim 1, characterized in that: The heat insulation pipe (4) is composed of 5-10 PI films.

6. The heating structure for a circumferential heating non-combustible appliance according to claim 1, characterized in that: The heating structure comprises an inner metal pipe (9), an insulation layer (10) and a resistance sheet (11), the insulation layer (10) is covered on the outer wall of the inner metal pipe (9), the resistance sheet (11) is arranged between the insulation layer (10) and the heat insulation pipe (4), one side of the resistance sheet (11) is fixedly connected with the insulation layer (10), the other side of the resistance sheet (11) is fixedly connected with the heat insulation pipe (4), and the wiring end of the resistance sheet (11) penetrates through the lower support seat (2).

7. The heating structure for a circumferential heating non-combustible appliance according to claim 6, characterized in that: The insulation layer (10) is a PI film.

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