WO2016123738A1

WO2016123738A1 - Cigarette heater and heating assembly thereof

Info

Publication number: WO2016123738A1
Application number: PCT/CN2015/072116
Authority: WO
Inventors: 陈志平
Original assignee: 深圳麦克韦尔股份有限公司
Priority date: 2015-02-02
Filing date: 2015-02-02
Publication date: 2016-08-11

Abstract

Disclosed are a cigarette heater and a heating assembly (10) thereof, comprising a heating pipe (100), a sleeve (200), a first conductive ring (300) and a second conductive ring (400), wherein the heating pipe (100) comprises a first connecting ring (120), a second connecting ring (140), a plurality of heating rings (160) between the first and the second connecting rings (120, 140), and a plurality of connecting parts (180) connected on two sides of each heating ring (160). The connecting parts (180) are arranged alternately on the two sides of the heating ring (160), at an equal distance between two adjacent connecting parts (180), and thus the segments on the heating ring (160) through which current flows all have equal resistances, such that the heating pipe (100) provides heat uniformly and the cigarette is heated uniformly, thereby improving the utilization rate of the cigarette.

Description

Cigarette heater and heating element thereof

[Technical Field]

The invention relates to the technical field of smoking articles, in particular to a cigarette heater and a heating assembly thereof.

【Background technique】

With the deepening of smoking and health research, some scientific studies have shown that the most harmful substances in cigarettes are caused by the thermal cracking of tobacco when tobacco is burned. In order to solve the above problems, the tobacco can be released from the nicotine and the like by electrically heating the tobacco, thereby avoiding harmful substances generated by the burning of the tobacco.

A cigarette heater is a smoking article that heats a cigarette to generate smoke. It generally has a cylindrical heating chamber into which the cigarette is heated. However, the general cigarette heater does not heat evenly, resulting in uneven heating of the cigarette, and the tobacco cannot be fully utilized.

[Summary of the Invention]

Based on this, it is necessary to provide a cigarette heater and a heating assembly thereof for the problem of uneven heating of the cigarette heater.

A cigarette heating assembly comprising a heating tube, a sleeve, a first conductive ring and a second conductive ring;

The heating tube is located in the sleeve; the heating tube includes a first connecting ring, a second connecting ring, a plurality of heating rings between the first connecting ring and the second connecting ring, and a plurality of Connection part

The first connecting ring, the second connecting ring and the plurality of heating rings are all cylindrical, and the first connecting ring, the second connecting ring and the plurality of heating ring axes are collinear and The first conductive ring is sleeved on the first connecting ring and is tightly connected to the first connecting ring; the second conductive ring is sleeved on the second connecting ring, and the The second connecting ring is tightly connected;

a plurality of the connecting portions are respectively connected to two sides of the heating ring, and the connecting portion adjacent to the first connecting ring is connected to the first connecting ring, and the connecting portion of the second connecting ring is adjacent to the connecting portion Connected to the second connecting ring, and the other connecting portions are connected to the adjacent heating ring;

a plurality of the connecting portions connected to the same heating ring are alternately arranged on both sides of the heating ring, and of the plurality of the connecting portions connected to the same heating ring, two adjacent ones of the connecting portions The distance between the parts is equal.

In one of the embodiments, the inner wall of the connecting portion is coplanar with the inner wall of the heating ring, and the outer wall of the connecting portion is coplanar with the outer wall of the heating ring.

In one of the embodiments, the heating tube is formed by forming an elongated hole in the circular tube.

In one of the embodiments, the number of the connecting portions connecting the two adjacent heating rings is equal to or greater than three.

In one of the embodiments, the spacing between two adjacent heating rings is less than the width of the heating ring.

In one embodiment, the heating tube is made of iron chrome aluminum alloy.

In one of the embodiments, a reflective film is further provided, the reflective film being disposed on an inner wall of the sleeve, and having a gap between the reflective film and the heating tube.

In one embodiment, the reflective film is made of aluminum.

In one of the embodiments, the reflective film is adhered to the inner wall of the sleeve by a high temperature glue.

In one embodiment, the sleeve is made of a low thermal conductivity ceramic.

In one embodiment, the sleeve is made of zirconia microporous ceramic.

In one embodiment, the first conductive lead and the second conductive lead are further included;

a first via hole through which the first electrode lead passes is opened, and a position of the first via hole corresponds to the first conductive ring;

A second via for the passage of the second electrode lead is further disposed on the sleeve, and the position of the second via corresponds to the second conductive loop.

In one embodiment, the first conductive ring and the second conductive ring each comprise an annular ceramic substrate and a metallization layer disposed outside the ceramic substrate.

In one embodiment, the metallization layer is a Mo-Mn metallization layer having a thickness of 10-30 microns.

A cigarette heater comprising a battery assembly and the cigarette heating assembly, the battery assembly being coupled to the sleeve, and the battery assembly being electrically connected to the first conductive ring and the second conductive ring, respectively .

The above cigarette heater and its heating assembly, the first conductive ring and the second conductive ring are used for accessing a power source, so that the first connecting ring and the second connecting ring become two electrodes. Since the first conductive ring sleeve is tightly connected to the first connecting ring on the first connecting ring, the second conductive ring sleeve is tightly connected to the second connecting ring on the second connecting ring, so that the first connecting ring and the second connecting ring are connected The resistance of each part is the same and the current distribution is uniform. At the same time, since the connecting portion is alternately arranged on both sides of the heating ring, and the distance between the adjacent two connecting portions is equal, each current passing through the current on the heating ring has the same magnitude and the same resistance, so the heating ring The heat rate of each part is the same. In turn, the heating tube is evenly heated, and the cigarette can be uniformly heated, thereby improving the utilization rate of the tobacco.

[Description of the Drawings]

Figure 1 is a perspective view of an embodiment of a cigarette heating assembly;

Figure 2 is a cross-sectional view of the cigarette heating assembly of Figure 1;

Figure 3 is an exploded view of the cigarette heating assembly of Figure 1;

Figure 4 is another exploded view of the cigarette heating assembly of Figure 1;

Figure 5 is a front elevational view of the heating tube of the cigarette heating assembly of Figure 1;

Figure 6 is a perspective view of yet another embodiment of a cigarette heating assembly.

【detailed description】

In order to facilitate the understanding of the present invention, the cigarette heater and its heating assembly will be described more fully hereinafter with reference to the associated drawings. A preferred embodiment of a cigarette heater and its heating assembly is given in the drawings. However, the cigarette heater and its heating assembly can be implemented in many different forms and are not limited to the embodiments described herein. Rather, the purpose of providing these embodiments is to make the disclosure of the cigarette heater and its heating assembly more thorough and comprehensive.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used herein in the specification of the cigarette heater and its heating assembly is for the purpose of describing the specific embodiments and is not intended to limit the invention.

As shown in FIGS. 1 through 3, the cigarette heating assembly 10 of one embodiment includes a heating tube 100, a sleeve 200, a first conductive ring 300, and a second conductive ring 400. The first conductive ring 300 and the second conductive ring 400 are used for accessing a power source, and the cigarette is inserted into the heating tube 100, and the tobacco in the cigarette can be electrically heated by the heating tube 100 to release the nicotine and the like from the tobacco, thereby avoiding the harmful effects of tobacco burning. substance.

The heating tube 100 is located within the cannula 200. The material of the sleeve 200 is preferably a low thermal conductivity ceramic having a thermal conductivity of generally 2 w/m*K or less, such as zirconia microporous ceramic. In an embodiment, the sleeve 200 can include a symmetrical first portion 220 and a second portion 240 that are relatively fixed to form a cylindrical structure. The sleeve 200 can be easily processed by a combination of two parts.

The heating tube 100 includes a first connecting ring 120, a second connecting ring 140, a plurality of heating rings 160 between the first connecting ring 120 and the second connecting ring 140, and a plurality of connecting portions 180. The first connecting ring 120, the second connecting ring 140 and the plurality of heating rings 160 are all cylindrical, and the first connecting ring 120, the second connecting ring 140 and the plurality of heating rings 160 are coaxial and have the same radius. Referring to FIG. 4 , the first conductive ring 300 is sleeved on the first connecting ring 120 and is closely connected to the first connecting ring 120 . The second conductive ring 400 is sleeved on the second connecting ring 140 and is closely connected to the second connecting ring 140.

The plurality of connecting portions 180 are respectively connected to the two sides of the heating ring 160 , the connecting portion 180 adjacent to the first connecting ring 120 is connected to the first connecting ring 120 , and the connecting portion 180 adjacent to the second connecting ring 140 is connected to the second connecting ring 140 . The other connecting portion 180 is connected to the adjacent heating ring 160. The plurality of connecting portions 180 connected to the same heating ring 160 are alternately arranged on both sides of the heating ring 160, and among the plurality of connecting portions 180 connected to the same heating ring 160, the distance between the adjacent two connecting portions 180 is equal .

The first conductive ring 300 and the second conductive ring 400 are used to access a power source such that the first connection ring 120 and the second connection ring 140 become two electrodes. The first conductive ring 300 is tightly connected to the first connecting ring 120 on the first connecting ring 120, and the second conductive ring 400 is tightly connected to the second connecting ring 140 on the second connecting ring 140, so that the first connecting ring is connected. The resistances of the respective portions of the 120 and the second connecting ring 140 are the same, and the current distribution is uniform. Meanwhile, since the connecting portion 180 is alternately arranged on both sides of the heating ring 160, and the distance between the adjacent two connecting portions 180 is equal, each current passing through the current on the heating ring 160 has the same magnitude and the same resistance. Therefore, the heat generation rate of each portion on the heating ring 160 is the same. Further, the heating tube 100 is uniformly heated, and the cigarette can be uniformly heated, thereby improving the utilization rate of the tobacco.

In an embodiment, the inner wall of the connecting portion 180 may be coplanar with the inner wall of the heating ring 160 to prevent the cigarette from being scraped by the connecting portion 180. The outer wall of the connecting portion 180 may be coplanar with the outer wall of the heating ring 160, saving space. Further, a circular tube can be formed by laser welding, and the heating tube 100 is formed by forming an elongated hole in the circular tube. The opening of the elongated hole can be achieved by the process of opening the hole. The material of the heating pipe 100 may be an iron-chromium-aluminum alloy such as FeCr20Al6 alloy or FeCr21Al5 alloy. Iron-chromium-aluminum alloys allow high temperatures and long service life, so surface loads can be higher and can be warmed up faster.

The number of the connecting portions 180 connecting the adjacent two heating rings 160 is generally three or more. Referring to FIG. 5, in the embodiment of FIG. 5, the number of connecting portions 180 connecting the adjacent two heating rings 160 is four. One. Preferably, the spacing between adjacent heating rings 160 is less than the width of the heating ring 160. The smaller the pitch, the larger the area of heat generation, that is, the area of the heating ring 160, which is advantageous for uniform heating.

As shown in FIGS. 1 to 3, in one embodiment, the cigarette heating assembly 10 may further include a reflective film 500 disposed on an inner wall of the sleeve 200, and having a reflective film 500 and the heating tube 100 therebetween. Void. The heating tube 100 is not in contact with the sleeve 200, and has an air layer and a reflective film 500 therebetween, so that the heat generated by the heating tube 100 is not easily transmitted to the sleeve 200, thereby preventing heat loss and improving energy utilization. The rate is advantageous for rapid temperature rise, and on the other hand, the casing 200 is prevented from being overheated and affects other components outside the casing 200.

The reflective film 500 has a function of reflecting infrared rays, and further enhances the heat retention effect. The material of the reflective film 500 may be aluminum, which is low in cost and good in reflection effect. The reflective film 500 can be attached to the inner wall of the sleeve 200 by a high temperature glue, which is convenient for processing and has low manufacturing cost. In one embodiment, the high temperature glue may be an adhesive made of aluminosilicate, inorganic ceramic powder or the like to meet the temperature resistance requirement of 200 degrees Celsius or more.

In an embodiment, the cigarette heating assembly 10 can be electrically coupled to the battery assembly via a first electrically conductive lead and a second electrically conductive lead (not shown). The sleeve 200 is provided with a first via hole 260 through which the first electrode lead passes, and the first via hole 260 is located corresponding to the first conductive ring 300. The sleeve 200 is further provided with a second via 280 through which the second electrode lead passes, and the second via 280 is located corresponding to the second conductive ring 400. The first conductive lead and the second conductive lead may be nickel wires.

The first via holes 260 may be provided only one or two oppositely, and the first conductive ring 300 may be electrically connected at two points. Further, the first via holes 260 may be disposed in plurality, and the plurality of first via holes 260 are evenly distributed, and the first conductive ring 300 may be electrically connected at multiple points to facilitate uniform distribution of current. Similarly, the second vias 280 can also be provided as one, two or more.

In one of the embodiments, the first conductive ring 300 and the second conductive ring 400 each include an annular ceramic substrate and a metallization layer disposed outside the ceramic substrate. The metallization layer can be a Mo-Mn metallization layer, and the metallization layer can have a thickness of 10-30 microns.

The first conductive ring 300 and the first conductive ring 300 can be brazed around, and the first conductive leads are simultaneously soldered to conveniently and quickly realize the first conductive ring 300, the first conductive ring 300 and the first conductive lead. Mechanical and electrical connections. Similarly, the second conductive ring 400 and the second conductive ring 400 can also be brazed around, and the second conductive leads are simultaneously soldered to conveniently and quickly realize the second conductive ring 400, the second conductive ring 400 and the second conductive The leads are reliable mechanical and electrical connections. The brazing metal used is preferably silver-copper alloy or pure silver, which has high strength and can be connected to load-bearing parts to obtain high joint strength.

Referring to FIG. 6, in one embodiment, the heating tube 100, the first conductive ring 300 and the second conductive ring 400 each form a combination, and the cigarette heating assembly 10 comprises a plurality of combinations, each set of heating tubes 100, first The combination of the conductive ring 300 and the second conductive ring 400 has the same shape and coaxial connection of the heating tubes 100 of each group. The cigarette heating unit 10 of the present embodiment forms a longer heating space, the number of combinations and the length of the heating tube 100, which can be set as long as the length of heating of the cigarette is required. The sleeve 200 may be one, sleeved on the outside of a plurality of combinations, and the sleeve 200 may also be plural, and the plurality of sleeves 200 are sequentially connected.

A cigarette heater of an embodiment includes a battery assembly and the cigarette heating assembly 10 of claims 1 to 6, the battery assembly being coupled to the sleeve 200, and the battery assembly being electrically connected to the first conductive ring 300 and the second conductive ring 400, respectively The first conductive ring 300 and the second conductive ring 400 are electrically connected, so that the first connecting ring 120 and the second connecting ring 140 become two electrodes.

The first conductive ring 300 is tightly connected to the first connecting ring 120 on the first connecting ring 120, and the second conductive ring 400 is tightly connected to the second connecting ring 140 on the second connecting ring 140, so that the first connecting ring is connected. The resistances of the respective portions of the 120 and the second connecting ring 140 are the same, and the current distribution is uniform. Meanwhile, since the connecting portion 180 is alternately arranged on both sides of the heating ring 160, and the distance between the adjacent two connecting portions 180 is equal, each current passing through the current on the heating ring 160 has the same magnitude and the same resistance. Therefore, the heat generation rate of each portion on the heating ring 160 is the same. Further, the heating tube 100 is uniformly heated, and the cigarette can be uniformly heated, thereby improving the utilization rate of the tobacco.

The above embodiments are merely illustrative of several embodiments of the present invention, and are not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A cigarette heating assembly, comprising: a heating tube, a sleeve, a first conductive ring and a second conductive ring;

The heating tube is located in the sleeve; the heating tube includes a first connecting ring, a second connecting ring, a plurality of heating rings between the first connecting ring and the second connecting ring, and a plurality of Connection part

The first connecting ring, the second connecting ring and the plurality of heating rings are all cylindrical, and the first connecting ring, the second connecting ring and the plurality of heating ring axes are collinear and The first conductive ring is sleeved on the first connecting ring and is tightly connected to the first connecting ring; the second conductive ring is sleeved on the second connecting ring, and the The second connecting ring is tightly connected;

a plurality of the connecting portions are respectively connected to two sides of the heating ring, and the connecting portion adjacent to the first connecting ring is connected to the first connecting ring, and the connecting portion of the second connecting ring is adjacent to the connecting portion Connected to the second connecting ring, and the other connecting portions are connected to the adjacent heating ring;

a plurality of the connecting portions connected to the same heating ring are alternately arranged on both sides of the heating ring, and of the plurality of the connecting portions connected to the same heating ring, two adjacent ones of the connecting portions The distance between the parts is equal.
The cigarette heating assembly according to claim 1, wherein an inner wall of the connecting portion is coplanar with an inner wall of the heating ring, and an outer wall of the connecting portion is coplanar with an outer wall of the heating ring.
The cigarette heating assembly according to claim 2, wherein said heating tube is formed by forming an elongated hole in the circular tube.
The cigarette heating unit according to claim 1, wherein the number of the connecting portions connecting the two adjacent heating rings is three or more.
A cigarette heating assembly according to claim 1 wherein the spacing between adjacent two of said heating rings is less than the width of said heating ring.
The cigarette heating assembly according to claim 1, wherein the heating tube is made of an iron-chromium-aluminum alloy.
A cigarette heating assembly according to claim 1, further comprising a reflective film disposed on an inner wall of said sleeve and having a gap between said reflective film and said heating tube.
The cigarette heating assembly according to claim 7, wherein the reflective film is made of aluminum.
A cigarette heating assembly according to claim 8, wherein said reflective film is adhered to the inner wall of said sleeve by a high temperature glue.
The cigarette heating assembly according to claim 1, wherein the sleeve is made of a low thermal conductivity ceramic.
The cigarette heating assembly according to claim 10, wherein the sleeve is made of zirconia microporous ceramic.
The cigarette heating assembly of claim 1 further comprising a first conductive lead and a second conductive lead;

a first via hole through which the first electrode lead passes is opened, and a position of the first via hole corresponds to the first conductive ring;

A second via for the passage of the second electrode lead is further disposed on the sleeve, and the position of the second via corresponds to the second conductive loop.
The cigarette heating assembly of claim 1 wherein said first electrically conductive ring and said second electrically conductive ring each comprise an annular ceramic substrate and a metallization layer disposed externally of said ceramic substrate.
The cigarette heating assembly of claim 13 wherein said metallization layer is a Mo-Mn metallization layer, said metallization layer having a thickness of from 10 to 30 microns.
A cigarette heater characterized by comprising a battery assembly and the cigarette heating assembly according to any one of claims 1 to 14, wherein the battery assembly is connected to the sleeve, and the battery assembly is respectively associated with the A conductive ring and the second conductive ring are electrically connected.