WO2020019167A1

WO2020019167A1 - Flue-curing tobacco device and heating assembly having vacuum heat insulation effect

Info

Publication number: WO2020019167A1
Application number: PCT/CN2018/096882
Authority: WO
Inventors: 蒋路生
Original assignee: 深圳麦克韦尔股份有限公司
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-01-30

Abstract

The present invention relates to a flue-curing tobacco device and a heating assembly having a vacuum heat insulation effect. The heating assembly comprises an outer pipe and an inner pipe. The outer pipe sleeves the inner pipe, two end portions of the outer pipe are fixedly connected to the outer wall surface of the inner pipe, and a vacuum area is formed between the inner wall surface of the outer pipe and the inner pipe. The inner pipe comprises an inner pipe, and a heating circuit disposed on the surface of the inner pipe and used for heating after being energized, and an axial position of the heating circuit on the inner pipe is located in an axial interval where the vacuum area is located. The inner pipe of the heating assembly does not participate in direct heating, the speed of heat dissipation of the inner pipe to the outside may be decreased, and rapid dissipation of heat to the outside may be avoided; in addition, the inner pipe does not participate in direct heating, no special heat insulation structure is required to be disposed between the outer pipe and the inner pipe, the fixing mode between the outer pipe and the inner pipe may be simplified, a heating part and a heat insulation part are more compact in size, parts are few, the structural design is simple, the size of a product is decreased, and the product is more convenient to carry.

Description

Baking smoking set and vacuum heat-insulating heating component

Technical field

The invention relates to the field of cigarette substitutes, and more particularly, to a baking smoking set and a vacuum heat-insulating heating component.

Background technique

The commonly used heat insulation method for low temperature cigarettes is the vacuum insulation tube. The existing technology is generally realized by the separation of the heating tube and the vacuum insulation tube. Since the heating tube is a high temperature part, in order to keep the heating tube and the vacuum insulation tube relatively fixed, other High temperature resistant, low thermal conductivity material to fix, generally high temperature resistant plastic.

Discrete heating pipes and vacuum insulation pipes have the following disadvantages:

1. The heating pipe is a high-temperature part, and it needs other materials with high temperature resistance and low thermal conductivity to fix it. Generally, high-temperature resistant plastics are used, and the price of these materials is very high, which leads to a significant increase in the cost of the whole machine;

2. The fixed parts of the heating pipe will bring the heat out of the heating pipe, which complicates the heat insulation problem. The vacuum pipe can only solve the heat insulation of the circumference of the heating pipe. The upper and lower heat insulation requires additional thin-walled parts to achieve, Relatively harsh upper fixed parts also need special heat dissipation design;

3. Because of the separate design, only the heat insulation of the perimeter is solved, and more heat escapes from the upper and lower directions, resulting in a low thermal efficiency of the whole machine;

4. The separated two parts will require larger size, which will cause the overall size to be too large;

5. The cost of both parts is relatively high, which brings cost pressure to the whole machine.

technical problem

The technical problem to be solved by the present invention is to provide a heating assembly for baking smoking utensils and vacuum insulation for the defects that the heat in the prior art is easily radiated and the heat insulation structure is complicated.

Technical solutions

The technical solution adopted by the present invention to solve its technical problems is to construct a vacuum heat-insulating heating component, including an outer pipe and an inner pipe;

The outer pipe is sleeved outside the inner pipe, and both ends of the outer pipe are fixedly connected to the outer wall surface of the inner pipe, and a vacuum zone is formed between the inner wall surface of the outer pipe and the inner pipe. ;

The inner tube includes a tubular substrate, and a heating circuit formed on a surface of the tubular substrate to generate heat after being energized, and the axial position of the heating circuit on the tubular substrate is located in the vacuum region. Within the axial interval.

Preferably, the heating circuit is provided in sections, and each section is electrically connected to a lead, the heating circuit of each section is distributed in the axial direction of the tubular substrate, and / or the heating circuit of each section is located at The circumferential distribution of the tubular substrate.

Preferably, the heating circuit is printed and formed on the tubular substrate.

Preferably, a lead wire electrically connected to the heating circuit is provided on an outer wall surface of the inner pipe protruding from the outer pipe.

Preferably, the tubular substrate is a material with low thermal conductivity, including one of stainless steel, titanium alloy, nickel-based alloy, zirconia, and ceramic.

Preferably, both ends of the outer tube and the inner tube are fixed by a vacuum welding connection.

Preferably, the heating circuit is located inside the tubular substrate, and the lead wire is electrically connected to the heating circuit through a side wall of the tubular substrate.

Preferably, the inner tube is formed by curling.

Preferably, the tubular substrate is made of ceramic material, and a dielectric layer is provided on the inner side of the tubular substrate to isolate the ceramic from phase change and high-temperature ionization, and the heating circuit is located outside the dielectric layer.

Preferably, the dielectric layer is a glass layer.

Preferably, the heating circuit is located outside the tubular substrate, and the heating circuit is located in the vacuum region.

Preferably, a wiring connected between the lead and the heating circuit is also provided on the outer side of the inner tube, and the wiring is covered with an insulating layer, so that the wiring is connected to the outer tube and the inner tube. The welding material between the tubes is insulated.

A baking smoking set includes the vacuum heat-insulating heating component.

Beneficial effect

The implementation of the baking smoking utensil and the vacuum heat-insulating heating component of the present invention has the following beneficial effects: the tubular substrate of the heating component does not participate in direct heating, which can reduce the rate of heat dissipation from the inner tube to the outside and prevent excessive heat from spreading outward In addition, the tubular substrate does not participate in direct heat generation, and there is no need to set a special heat insulation structure between the outer tube and the inner tube, which can simplify the fixing method between the outer tube and the inner tube. The heating and insulation parts are more compact and the parts are more Less, simple structure design, reduced product size and more portable.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below with reference to the accompanying drawings and embodiments. In the drawings:

FIG. 1 is a schematic diagram of an assembly structure of a heating component in a first embodiment of the present invention; FIG.

2 is a schematic cross-sectional structure diagram of the heating component in FIG. 1;

3 is an enlarged schematic view of a partial view A in FIG. 2;

4 is a schematic diagram of an assembly structure of a heating component in a second embodiment of the present invention;

5 is a schematic exploded structure diagram of the heating component in FIG. 4;

6 is a schematic cross-sectional structure diagram of the heating component in FIG. 4;

FIG. 7 is an enlarged schematic view of a partial view B in FIG. 6.

Best Mode of the Invention

In order to have a clearer understanding of the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the baking smoking set in a preferred embodiment of the present invention includes a heating component 1, and the heating component 1 includes an outer tube 11 and an inner tube 12.

The outer tube 11 is sleeved outside the inner tube 12, and both ends of the outer tube 11 are fixedly connected to the outer wall surface of the inner tube 12. A vacuum region 13 is formed between the inner wall surface of the outer tube 11 and the inner tube 12. To the thermal insulation effect, the heat on the inner tube 12 is prevented from diffusing outward.

The inner tube 12 includes a tubular substrate 19 and a heating circuit 14 formed on the surface of the tubular substrate 19 to generate heat after being energized. The axial position of the heating circuit 14 on the inner tube 12 is located in the axial section where the vacuum region 13 is located. .

After the heating circuit 14 is energized, heat can be generated, and the low-temperature cigarette inserted into the inner tube 12 is baked and heated. The tubular substrate 19 does not participate in direct heating, which can reduce the rate of heat dissipation from the inner tube 12 to avoid excessive heat. In addition, the tubular substrate 19 does not participate in direct heat generation, and there is no need to provide a special heat insulation structure between the outer tube 11 and the inner tube 12, which can simplify the fixing method between the outer tube 11 and the inner tube 12, heating and The size of the heat insulation part is more compact, the number of parts is smaller, the structure design is simple, and the product volume is reduced and more portable.

The inner tubular substrate 19 may be selected from a low thermal conductivity material, which reduces the product cost and has a low thermal conductivity. The material of the tubular substrate 19 may include one of stainless steel, titanium alloy, nickel-based alloy, zirconia, and ceramic. Because the heating component 1 has less heat dissipation to the outside, the temperature of the contact with other parts is low, and the heat insulation design is simple.

The heating circuit 14 on the inner tube 12 is provided in sections, and each section is electrically connected to the lead 15 respectively. Each segment of the heating circuit 14 may be distributed in the axial direction of the tubular substrate 19, or may be distributed in the circumferential direction of the tubular substrate 19, or the heating circuits 14 may be distributed in both the axial direction and the circumferential direction. After the heating circuit 14 is set in sections, the heating can be performed in sections, so that the object to be heated is sequentially heated in sections, instead of heating all at once.

Preferably, the heating circuit 14 is printed and formed on the tubular substrate 19 to improve production efficiency and reduce costs. In other embodiments, the heating circuit 14 may also be attached or welded or embedded on the inner tube 12.

In order to facilitate the connection of the heating circuit 14 with an external power source, a lead 15 electrically connected to the heating circuit 14 is provided on the outer wall surface of the inner tube 12 protruding from the outer tube 11, and power can be supplied to the heating circuit 14 through the lead 15 and an external power source connection. Each section of the heating circuit 14 can be independently connected to a power source to achieve the effect of controlling the heating in sections.

The two ends of the outer tube 11 and the inner tube 12 are fixed by vacuum welding in a vacuum environment, which can simplify the assembly process between the two, and it is also possible to disregard the outward heat dissipation of the inner tube 12 at the welding position.

1 to 3 in combination, in some embodiments, the heating circuit 14 is located inside the tubular substrate 19, the lead 15 is located outside the inner tube 12, and the lead 15 passes through the side wall of the inner tube 12 and is electrically connected to the heating circuit 14. Sexual connection.

Preferably, the inner tube 12 is crimped, and after the heating circuit 14 is formed, the tubular substrate 19 may be crimped at the same time, so that the heating circuit 14 is located in the inner tube 12.

In this embodiment, the tubular substrate 19 is made of ceramic material. A dielectric layer for insulation and heat insulation is provided inside the tubular substrate 19, and the heating circuit 14 is disposed outside the dielectric layer. The dielectric layer is usually a glass layer, preventing a change in the size of the ceramic layer caused by the phase change of the ceramic layer of the inner tube 12, and a ceramic material becoming superconducting due to high-temperature ionization. The ceramic-made tubular substrate 19 can reduce the external heat dissipation speed and improve the effect of heating the low-temperature cigarette. In other embodiments, the tubular substrate 19 may be made of other materials.

As shown in FIG. 4 to FIG. 7, in another embodiment, the heating circuit 14 is located outside the tubular substrate 19, so that the heating circuit 14 is located in the vacuum region 13. At this time, the tubular substrate 19 may be directly formed into a cylindrical shape, and a heating circuit 14 may be provided outside the cylindrical tubular substrate 19; the tubular substrate 19 may also be formed by curling, and the heating circuit 14 may be provided in a tubular shape before or after curling On the substrate 19. Regardless of whether the heating circuit 14 is provided inside or outside the inner tube 12, the materials of the tubular substrate 19 of the two solutions may be the same.

The heating circuit 14 can be connected to the lead 15 only after being pulled out from the vacuum area 13. Therefore, the outer side of the inner tube 12 is also provided with a wiring 16 connected between the lead 15 and the heating circuit 14. The wiring 16 is covered with an insulating layer 17, which can insulate the wiring 16 from the soldering material 18 between the outer tube 11 and the inner tube 12 and avoid short-circuiting with the soldering material 18.

Understandably, the foregoing technical features can be used in any combination without limitation.

The above description is only an embodiment of the present invention, and thus does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies The same applies to the fields of patent protection of the present invention.

Claims

A vacuum thermal insulation heating component (1), characterized in that it comprises an outer tube (11) and an inner tube (12);

The outer pipe (11) is sleeved outside the inner pipe (12), and both ends of the outer pipe (11) are fixedly connected to the outer wall surface of the inner pipe (12). 11) forming a vacuum zone (13) between the inner wall surface and the inner pipe (12);

The inner tube (12) includes a tubular substrate (19), and a heating circuit (14) formed on a surface of the tubular substrate (19) to generate heat after being energized. The axial position on the tubular substrate (19) is located in the axial interval where the vacuum zone (13) is located.
The vacuum heat-insulating heating component (1) according to claim 1, characterized in that the heating circuit (14) is provided in sections, and each section is electrically connected to a lead wire (15) respectively, and the sections generate heat The electric circuit (14) is distributed in the axial direction of the tubular substrate (19), and / or the heating circuit (14) in each section is distributed in the circumferential direction of the tubular substrate (19).
The vacuum thermal insulation heating assembly (1) according to claim 1, characterized in that the heating circuit (14) is printed and formed on the tubular base material (19).
The vacuum heat-insulating heating assembly (1) according to claim 1, characterized in that the inner pipe (12) extends from the outer wall surface of the outer pipe (11) and is provided with the heating circuit (14) ) Electrically connected leads (15).
The vacuum thermal insulation heating assembly (1) according to claim 1, characterized in that the tubular substrate (19) is a material with low thermal conductivity, including stainless steel, titanium alloy, nickel-based alloy, zirconia, and ceramic One.
The vacuum heat-insulating heating assembly (1) according to any one of claims 1 to 5, characterized in that a vacuum welding connection is adopted between both ends of the outer pipe (11) and the inner pipe (12). fixed.
The vacuum-insulated heating assembly (1) according to claim 6, characterized in that the heating circuit (14) is located inside the tubular base material (19), and the inner tube (12) protrudes from the A lead wire (15) electrically connected to the heating circuit (14) is provided on an outer wall surface of the outer tube (11), and the lead wire (15) passes through a side wall of the tubular substrate (19) and the The heating circuit (14) is electrically connected.
The vacuum thermal insulation heating assembly (1) according to claim 7, characterized in that the inner tube (12) is formed by curling.
The vacuum thermal insulation heating assembly (1) according to claim 8, characterized in that the tubular substrate (19) is made of ceramic material, and a dielectric layer is provided on the inner side of the tubular substrate (19) to isolate The ceramic prevents phase change and high-temperature ionization, and the heating circuit (14) is located outside the dielectric layer.
The vacuum thermal insulation heating assembly (1) according to claim 9, wherein the dielectric layer is a glass layer.
The vacuum thermal insulation heating assembly (1) according to claim 6, characterized in that the heating circuit (14) is located outside the tubular substrate (19), and the heating circuit (14) is located in the vacuum Within area (13).
The vacuum heat-insulating heating assembly (1) according to claim 11, characterized in that the inner pipe (12) extends from the outer wall surface of the outer pipe (11) and is provided with the heating circuit (14) ) An electrically connected lead wire (15), and an outer side of the inner tube (12) is further provided with a wiring (16) connected between the lead wire (15) and the heating circuit (14), the wiring (16) is covered with an insulating layer (17) to insulate the wiring (16) from the welding material (18) between the outer tube (11) and the inner tube (12).
A baking smoking set, comprising the vacuum heat-insulating heating component (1) according to any one of claims 1 to 12.