CN212306805U

CN212306805U - Heating pipe for heating non-combustible cigarette center and electric heating smoking set comprising same

Info

Publication number: CN212306805U
Application number: CN202020564766.3U
Authority: CN
Inventors: 刘翔
Original assignee: Shenzhen Buddy Technology Development Co Ltd
Current assignee: Shenzhen Buddy Technology Development Co Ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-01-08
Anticipated expiration: 2030-04-15

Abstract

The utility model belongs to the technical field of the heating smoking set, in particular to a central heating pipe of heating incombustible cigarette and an electric heating smoking set containing the same. The central heating pipe (4) comprises a rigid matrix (1) and a heating circuit (2); the rigid base body (1) is of a hollow tubular structure with at least one open end, the heating circuit (2) is arranged on the inner wall and/or the outer wall of the tubular structure of the rigid base body (1), and the maximum outer diameter of the central heating pipe (4) is smaller than the inner diameter of a cigarette which is not burnt during heating. The utility model discloses broken through conventional design mode, designed a heating pipe for central heating for the first time. Compared with the sheet or needle-shaped central heating element, the central heating pipe enlarges the heating area, has more uniform heating effect on the tobacco section, has good rigidity and is not easy to break or deform. Thus, the user may obtain a better smoking experience.

Description

Heating pipe for heating non-combustible cigarette center and electric heating smoking set comprising same

Technical Field

The utility model belongs to the technical field of the heating smoking set, in particular to a central heating pipe of heating incombustible cigarette and an electric heating smoking set containing the same.

Background

Heating elements used in central heating type non-combustion cigarette smoking articles are typically sheet or needle shaped, and sheet and needle heating elements typically have a relatively small heating area, resulting in a relatively small contact area between the tobacco segment and the heating element. After smoking of the cigarette is finished, the tobacco section far away from the heating element is often found to have poor baking effect, and the tobacco section near the heating element is over carbonized and burnt.

On the other hand, central sheet heating elements are generally weak in strength and rigidity and have the problem of being fragile or easily deformable, both of which detract from the smoking experience of a consumer smoking and heating a non-burning cigarette.

In order to solve the above problems, the present invention is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a central heating pipe for heating non-combustible cigarettes, wherein the central heating pipe 4 comprises a rigid base body 1 and a heating circuit 2; the rigid substrate 1 is a hollow tubular structure with at least one open end, the heating circuit 2 is arranged on the inner wall and/or the outer wall of the tubular structure of the rigid substrate 1, and the maximum outer diameter of the central heating pipe 4 is smaller than the inner diameter of the cigarette which is not burnt during heating.

Preferably, the cross-sectional shape of the central heating tube 4 is selected from a circle, an ellipse or a polygon.

Preferably, one open end face of the central heating pipe 4 is a non-flat end face. The aim is to reduce the resistance during insertion of a heated non-burning cigarette.

Preferably, the line of one open end face of the central heating pipe 4 is a broken line shape.

Preferably, one open end surface of the central heating pipe 4 is of a sawtooth-like structure. The opening end face is of a sawtooth-like structure, namely the opening end face comprises a plurality of sharp parts which are indirectly or directly connected.

Preferably, one open end face of the central heating pipe 4 is an inclined end face.

Preferably, the maximum outer diameter of the central heating tube 4 is smaller than the inner diameter of the heated non-burning cigarette.

Preferably, the maximum length of the central heating tube 4 is less than or equal to the length of the tobacco section 3 of the heated non-burning cigarette.

Preferably, the wall thickness of the central heating tube 4 is less than or equal to 0.35 mm.

Preferably, the heating circuit 2 is fixed to the inner and/or outer wall of the tubular structure of the rigid base body 1.

Preferably, when the heating circuit 2 is distributed on the inner or outer surface of the rigid matrix 1, the thermal conductivity of the rigid matrix 1 is greater than or equal to 10W/m × K;

the heating circuit 2 is selected from a metal wire or a metal alloy wire, and the material of the heating circuit comprises gold Au, silver Ag, palladium Pb, platinum Pb, copper Cu, aluminum Al, nickel Ni or a mixture of two or more metals.

The heating lines 2 may also be distributed on both the inner and outer surfaces of the rigid substrate 1, and in this case, the thermal conductivity of the rigid substrate 1 may be greater than or equal to 10W/m K or less than 10W/m K.

The rigid matrix 1 can be a metal material, such as stainless steel, titanium alloy or nickel-chromium alloy, a ceramic material, such as alumina ceramic and zirconia ceramic, or a high-temperature resistant plastic, such as polyetheretherketone and polyimide.

The heating circuit 2 has two circuit pins protruding outside the central heating tube 4 for connecting with the positive and negative electrodes of the power supply.

The utility model discloses the second aspect provides an electric heating smoking set that contains first aspect the central heating pipe.

Preferably, be equipped with in the electrical heating smoking set and prop up a cigarette and hold the chamber, the cigarette hold the intracavity be provided with the cigarette holds the chamber lateral wall parallel central heating pipe 4, the cigarette hold the chamber lateral wall with have the space between the 4 outer walls of central heating pipe, heating circuit 2 have with two circuit pins that the positive negative pole electricity of power of electrical heating smoking set is connected.

The use method of the central heating pipe of the utility model is as follows:

the central heating pipe 4 is arranged in an adaptive smoking set, so that two circuit pins of the heating circuit 2 are connected with the positive electrode and the negative electrode of a power supply;

inserting the tobacco section 3 for heating the non-burning cigarette from the opening end surface of the non-flat end surface of the central heating pipe 4 to a proper position, so that the central heating pipe 4 is enclosed inside the tobacco section 3;

the power supply is turned on, so that the heating circuit 2 starts to generate heat to heat the tobacco section 3 of the cigarette.

The utility model discloses following beneficial effect has:

a generally hollow heating tube surrounds the exterior of the cigarette for circumferential heating. The utility model discloses broken through conventional design mode, designed a heating pipe for central heating for the first time. Compared with the sheet or needle-shaped central heating element, the central heating pipe enlarges the heating area, has more uniform heating effect on the tobacco section, has good rigidity and is not easy to break or deform. Thus, the user may obtain a better smoking experience.

Drawings

Fig. 1 is a front view of a central heating tube 4 of example 1.

Fig. 2 is a top view of a central heating tube 4 of example 1.

FIG. 3 is a cross-sectional view of the central heating tube 4 taken along plane A-A in example 1.

Fig. 4 is a perspective view of a central heating tube 4 of example 1.

Fig. 5 is a schematic view of the central heating tube 1 of example 1 after being inserted into a cigarette.

List of reference numerals:

1. rigid matrix, 2, heating circuit, 3, tobacco section, 4, central heating pipe.

Detailed Description

The present invention will be further described with reference to the following detailed description.

Example 1

As shown in fig. 1 to 4, a central heating tube for heating a non-combustible cigarette, wherein the central heating tube 4 comprises a rigid substrate 1 and a heating circuit 2; the rigid substrate 1 is a hollow tubular structure with two open ends, and the heating circuit 2 is arranged on the outer wall of the tubular structure of the rigid substrate 1.

The cross section of the central heating pipe 4 is circular.

One open end face of the central heating pipe 4 is of a sawtooth-like structure and comprises triangular sharp parts and plane grooves which are arranged at intervals.

The outer diameter of the central heating tube 4 is about half of the inner diameter of the cigarette that is not to be burned.

The maximum length of the central heating pipe 4 is less than or equal to the length of the tobacco section 3 of the cigarette which is not burnt by heating.

The heating circuit 2 is a mixture of silver palladium metal. The heating circuit 2 is fixed on the inner wall of the tubular structure of the rigid substrate 1 by means of a printing and sintering process.

The rigid substrate 1 is made of 304 stainless steel and has a thickness of 0.3 mm.

Fig. 5 is a schematic view of a tobacco section 3 for heating a non-burning cigarette inserted into the central heating tube 4.

The outer diameter of the central heating pipe 4 is about half of the inner diameter of the cigarette which is not burnt during heating, after the cigarette is inserted, the central heating pipe 4 is completely wrapped by the tobacco sections, one part of the tobacco sections 3 is positioned outside the central heating pipe 4, and the other part of the tobacco sections 3 is positioned inside the central heating pipe 4. The maximum length of the central heating tube 4 is equal to the length of the tobacco section 3 of the cigarette which is not burnt by heating. When the tobacco section 3 is inserted, the central heating pipe 4 is controlled to coincide with the central axis of the tobacco section 3 as much as possible, so that a uniform heating effect is obtained.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A central heating pipe for heating non-combustible cigarettes is characterized in that the central heating pipe (4) comprises a rigid base body (1) and a heating circuit (2); the rigid base body (1) is of a hollow tubular structure with at least one open end, the heating circuit (2) is arranged on the inner wall and/or the outer wall of the tubular structure of the rigid base body (1), and the maximum outer diameter of the central heating pipe (4) is smaller than the inner diameter of a cigarette which is not burnt during heating.

2. The central heating pipe according to claim 1, characterized in that the cross-sectional shape of the central heating pipe (4) is selected from the group consisting of circular, oval or polygonal.

3. The central heating tube according to claim 1, characterized in that one open end face of the central heating tube (4) is a non-flat end face.

4. The central heating tube according to claim 1, characterized in that one open end face of the central heating tube (4) is of a zigzag-like structure.

5. The central heating pipe according to claim 1, characterized in that one open end face of the central heating pipe (4) is an inclined end face.

6. The central heating tube according to claim 1, characterized in that the maximum length of the central heating tube (4) is less than or equal to the length of the tobacco section (3) of the heated non-burning cigarette.

7. The central heating tube according to claim 1, characterized in that the wall thickness of the central heating tube (4) is less than or equal to 0.35 mm.

8. The central heating tube according to claim 1, characterized in that the heating circuit (2) is fixed to the inner and/or outer wall of the tubular structure of the rigid base body (1).

9. An electrically heated smoking article, wherein the electrically heated smoking article comprises the central heating tube of claim 1.