CN114468362A - Low-temperature heating cigarette appliance and heating body thereof - Google Patents

Abstract

The invention discloses a low-temperature heating cigarette appliance and a heating element thereof. In the heating element, the support guide is arranged inside the insulating base, and the support guide is used to fix the heating element in the low-temperature heating cigarette device, which solves the problem that the heating element outside the insulating base is easily damaged when the heating element is assembled. The heating element includes an insulating base and a support guide. The outer wall of the insulating base is provided with a heating element. The support guide is a strip body with a tapered top. The insulating base is provided with a hollow cavity that penetrates up and down. , the support guide is fixedly arranged in the hollow cavity, and the top end matches and extends out of the insulating base.

Description

A low-temperature heating cigarette appliance and its heating element

technical field

The invention belongs to the technical field of smoking articles, and in particular relates to a low-temperature heating cigarette appliance and a heating element thereof.

Background technique

At present, there are mainly two types of electronic cigarettes on the market, such as electronic cigarettes that can be smoked by evaporating e-liquid and low-temperature cigarettes that can be smoked by heating/distilling tobacco materials at low temperature (150-300 degrees). Compared with conventional combustion cigarettes, the working temperature of electronic cigarettes is lower than that of low temperature cigarettes, and the harmful components in the smoke produced by the e-liquid or low temperature cigarettes used are far less than those of traditional combustion cigarettes. Therefore, the use of electronic cigarettes or Low temperature smoke can greatly avoid the adverse effects of cigarettes on the human body.

The heating element is the core component of the heat-not-burn smoking device, which is generally divided into a centrally heated sheet-shaped heating element, a rod-shaped heating element, and a surrounding heating tubular heating element. At present, the central heating heating element on the market is to set a heating element on the base (eg CN201380037693.5), and the heating element is energized to generate heat to realize the heating of the cigarettes in the smoking set. A heating body fixing seat is sleeved outside the base body, and when the heating body fixing seat is assembled with the base body, it is easy to cause damage to the heating element on the surface of the base body. In addition, the resistance circuit is connected to the external power supply through the pad at one end of the heating base. Since the size of the pad is not easy to control, it is easy to cause inconsistent resistance values of the heating elements in the same batch.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a low-temperature heating cigarette appliance and its heating element. In the heating element, the support guide is arranged inside the insulating base, and the support guide is used to fix the heating element in the low-temperature heating cigarette device, which solves the problem that the heating element outside the insulating base is easily damaged when the heating element is assembled.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A heating body, applied to low temperature heating cigarette appliances, comprises an insulating base and a support guide, a heating element is arranged on the outer wall of the insulating base, the support guide is a strip body with a tapered top, and the insulating base is provided with a heating element. The base is provided with a hollow cavity that penetrates up and down, the support guide is fixed in the hollow cavity, and the top end matches and extends out of the insulating base, and the heating element is fixed on the low-temperature heating cigarette device through the support guide. middle.

Specifically, the bottom end of the strip body is provided with a threaded connection hole for connecting with the low-temperature heating cigarette device.

Specifically, the outer walls of the two ends of the insulating base are also provided with connecting electrodes for connecting with an external power source, and the two connecting electrodes are respectively connected to the two ends of the heating element, and the connecting electrodes located at the top of the insulating base are connected The electrodes are electrically connected to an external power source through the support guides.

Specifically, the heating element includes a resistance line covering the outer wall of the entire insulating base and an insulating layer covering the resistance line, and the end of the resistance line is exposed from the insulating layer and connected to the corresponding connection electrode.

Specifically, the top of the insulating base body is provided with at least one through hole corresponding to the connection electrode, and the through hole is filled with a conductive matrix that communicates the connection electrode with the support guide.

Specifically, the end of the resistance line completely covers the part of the support guide extending out of the insulating base.

Specifically, the insulating base body is a tubular thin-walled member with an annular cross-section, and the connecting electrodes are annularly arranged around the tubular thin-walled member.

Specifically, the resistance line includes a first segment, a second segment and a third segment connected in sequence; wherein,

The first segment and the second segment are annularly arranged around the tubular thin-walled member, and the second segment is continuously bent and distributed along the circumferential direction of the tubular thin-walled member.

Specifically, the entire resistance circuit is continuously bent and distributed along the circumferential direction of the tubular thin-walled member.

A low-temperature heating cigarette appliance adopts the above-mentioned heating element, and the heating element is fixedly installed inside the appliance through the support guide.

Compared with the prior art, the present invention has the beneficial effects that: the insulating base is provided with a hollow cavity that penetrates up and down; It is not in direct contact with the heating element outside the insulating base, and the heating element is fixed in the low-temperature heating cigarette appliance by the support guide. Compared with the heating element outside the fixed seat, the heating element of this structure will not be damaged during assembly. component problem.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic cross-sectional view of a heating element provided by an embodiment of the present invention;

2 is a schematic structural diagram of a heating body provided by an embodiment of the present invention;

3 is a schematic diagram of a heating element inserted into a tobacco material provided by an embodiment of the present invention;

4 is a simplified schematic diagram of a heating element provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of a structure mode of a heating element involved in an embodiment of the present invention;

FIG. 6 is an exploded view of the structure mode of the heating element involved in the embodiment of the present invention;

FIG. 7 is a schematic diagram of the second structural mode of the heating element involved in the embodiment of the present invention;

FIG. 8 is an exploded view of the second structural mode of the heating element involved in the embodiment of the present invention;

9 is a schematic diagram of a third structural mode of a heating element involved in an embodiment of the present invention;

FIG. 10 is an exploded view of the third structural mode of the heating element involved in the embodiment of the present invention;

11 is a schematic structural diagram of a low-temperature heating cigarette appliance involved in an embodiment of the present invention;

Among them: 1-insulation base; 2-support guide; 3-heating element; 301-resistance circuit; 302-insulation layer; 4-hollow cavity; 5-connection electrode; 6-conductive elastic sheet; 7-connection screw; 8- Perforation; 9 - Tobacco material.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to Fig. 1-Fig. 3, a heating element, applied to low temperature heating cigarette appliances, comprises an insulating base 1 and a support guide 2, a heating element 3 is provided on the outer wall of the insulating base 1, and the support guide 2 is tapered at the top. The insulating base 1 is provided with a hollow cavity 4 that penetrates up and down, the support guide 2 is fixedly arranged in the hollow cavity 4, and the top end matches and extends to the outside of the insulating base 1, and the heating element is fixed at the low temperature through the support guide 2. In the heating cigarette device (the support guide is equivalent to the fixed seat of the heating body), it is convenient to pierce the tobacco material 9 during use.

In this embodiment, the insulating base 1 is provided with a hollow cavity 4 that penetrates through the upper and lower sides. By inserting and fixing the support guide 2 in the hollow cavity 4 of the insulating base 1, when the heating element is assembled, the support guide 2 is not connected to the insulating base. 1. The external heating element 3 is in direct contact. Compared with the direct external placement of the fixed seat, the heating element of this structure will not damage the heating element 3 when the support guide 2 is assembled.

When the heating element of this structure is assembled with the low-temperature heating cigarette appliance, the heating element is fixedly installed in the appliance through the support guide 2. As for the specific connection method between the support guide 2 and the appliance, screw connection, plug connection or snap connection can be adopted. When screwing is adopted, a threaded connection hole can be provided at the bottom end of the support guide 2; correspondingly, a connecting screw 7 that is docked with the threaded connection hole needs to be provided in the supporting appliance, and the support guide 2 is screwed. It is fixed on the connecting screw 7.

In some possible implementations, the outer walls of the two ends of the insulating base 1 are also provided with connecting electrodes 5 for connecting to an external power source, and the two connecting electrodes 5 are respectively connected to the two ends of the heating element 3 , and the connection at the top of the insulating base 1 is The electrode 5 is electrically connected to an external power source through the support guide 2 . In this way, the support guide 2 can also be used as a conductive member for connecting the heating body and the power supply while the heating body can be reliably fixed in the smoking device, which simplifies the circuit connection structure.

It can be understood that, in the actual design, the heating element 3 includes a resistance line 301 covering the outer wall of the entire insulating base 1 and an insulating layer 302 covering the resistance line 301. The end of the resistance line 301 is exposed from the insulating layer 302 and the corresponding connection is made. The electrodes 5 are connected; wherein, the insulating base 1 may be made of insulating material as a whole, or an insulating layer may be provided outside the conductive base to form insulation. In this embodiment, the resistance is distributed over the entire area of the insulating base 1, and the connecting electrodes 5 are arranged at both ends of the insulating base 1, so that the temperature distribution of the heating body is uniform; Pads, the resistance values of the same batch of heating elements tend to be more consistent (because the size of the pads is not easy to control, it is easy to cause inconsistent resistance values of the heating elements).

Specifically, the insulating base 1 is a tubular thin-walled member with an annular cross-section, and the support guide 2 is made of conductive material. After the support guide 2 is connected to the insulating base 1, the top of the support guide 2 does not intersect the space of the insulating base 1. , and the remaining lower part is in a spatially inclusive relationship with the insulating base 1 in the axial direction, and all or part of it is in contact with the inner wall of the insulating base 1 . The inclusion relationship here can be understood as that the opposite end of the tapered end of the support guide 2 does not exceed one of the end faces of the insulating base body 1 in space.

In this design, the resistance circuit 301 of the heating element adopts but is not limited to thick film printing on the surface of the insulating base 1. The printing material used includes silver, palladium and other metal pastes that can be used for electrical conduction. The key to the implementation is that the resistance is distributed in the The entire area of the insulating base body 1 . During operation of inserting the aerosol generator, only a part of the heating area of the insulating base body 1 is inserted into the aerosol generator. The positive and negative electrodes of the resistance of the heating element are respectively located on the two end faces of the tubular heating element, and the two ends of the insulating base 1 are set as the ends of the resistance printed circuit, the size and width of which are A and B, respectively, a ring covering the insulating base 1. The end face of the side wall is a "zigzag" or "one"-shaped metal paste coverage area between the ends of the two resistance printed circuits, that is, the whole circle of the resistance printed circuit at both ends of the insulating base 1 is a "zigzag" or "one" shape The natural extension of the area covered by the metal paste, that is, the resistance line 301 includes a first segment, a second segment and a third segment connected in sequence; wherein, the first segment and the second segment both form a ring around the tubular thin-walled member The second segment is continuously bent and distributed along the circumferential direction of the tubular thin-walled member. In other areas that do not include the extension end A of the resistance line 301 and the extension end B area of the resistance line 301, after printing the resistance area, cover an insulating layer, and then extend the resistance line 301 The extension end A of the resistance line 301 and the extension end B area of the resistance line 301 The ring-shaped end of the resistance line 301 is printed with a layer of ring electrodes to form two connection electrodes 5 of the heating element.

As shown in Figure 4, when the current passes through a section of resistance, the center of the resistance is the concentration area of the current's force and reaction force, so the temperature is the highest, and it will gradually decrease due to the action of the lever when it goes to both ends A and B of the resistance. The longer the length between the ends, the greater the temperature difference from the center point, but as long as the resistance is completely distributed in this section, it is called a section of temperature field. The resistance in a temperature field, the same material that produces resistance, and its meter resistance or square resistance (that is, resistance per meter or resistance per cubic meter) is distributed on the substrate, the width of the local width will affect the temperature of a section The local temperature difference in the field, as shown in Figure 2, the width of the line covering between the two ends of the insulating base 1 is C. In this design, the scheme of A=B=C is preferred, that is, in a temperature field as much as possible The temperature difference is too large due to the difference in the printing width of the material. However, in a specific application scenario, solutions with different widths of A, B, and C can be adopted, but the resistance area must cover the entire substrate to form a temperature field.

As shown in FIG. 5 and FIG. 6 , the manufacturing process of the heating element in this embodiment is as follows: the surface of the insulating base 1 is covered with a resistance line 301 , and the ends of the resistance are covered to the ends of both ends of the insulating base 1 ; The base body 1 is covered with an insulating layer, and the insulating layer avoids the two ends of the resistance line 301 at the extension ends of the two ends of the insulating base body 1; the ends of the resistance ends of the insulating base body 1 covered with the insulating layer are covered with a meter resistance. (Square resistance) The lowest possible paste is used as the electrode. One end of the insulating base 1 connected to the support guide 2 is provided with one or more through holes 8, and a low-meter resistance (square resistance) material (conductive matrix) is filled along the hole to connect the resistance line 301 on the surface of the insulating base 1 and the support guide 2. The guide 2 will communicate with the connecting electrode 5 at the top, and the other connecting electrode 5 at the bottom will directly serve as the electrode connected to the power supply of the appliance.

As shown in Fig. 1, the above-mentioned temperature field, that is, in the case where the resistance line 301 is attached to the surface of the insulating base 1, the temperature of the A and B ends of the insulating base 1 tends to be the same. After the support guide 2 is connected, the A end Due to the existence of the space volume of the support guide 2, the A end of the insulating base 1 is absorbed more heat, and the temperature will be lower than the B end of the insulating base 1. However, in the application scenario of this design, the cigarette sticks from the support guide When the 2 ends are inserted, when in use, the A end is at the top, the heat will tend to be transferred to the upper end, that is, the A end, and the temperature of the B end and the A end will be reduced. In actual implementation, if it is necessary to further compensate for the temperature difference between the A-end and B-ends of the insulating base 1 due to the heat absorption of the support guide 2, another design solution as shown in Figures 7 and 8 can be adopted. The resistance line 301 is close to the support guide One end of 2 is covered on the top surface of the support guide 2, so that the tapered surface of the support guide 2 and the A end of the insulating base 1 together form one end of the base of the resistance line 301; the surface of the resistance line 301 is covered with an insulating layer, covering During the insulating layer, avoid the resistance line 301 extending to the two end regions of the insulating base 1 ; the two end regions where the resistance line 301 extends to the insulating base 1 are covered with conductive material with less meter resistance or square resistance. In this solution, the design of at least one through hole 8 on this end side of the insulating base 1 will become a sufficient and unnecessary condition.

As shown in FIG. 9 and FIG. 10 , in this embodiment, the surface of the insulating base 1 completely covers a section of the resistance line 301 , but the corners of each "zigzag" or "one" shape forming the resistance line 301 extend to the insulating base The end of 1, that is to say, the whole resistance line 301 is continuously bent and distributed along the circumferential direction of the tubular thin-walled member; when the surface of the resistance line 301 is covered with an insulating layer, the "zigzag" or "one"-shaped resistance line 301 ends are exposed. A small area; and then cover the two ends of the insulating base 1 with a ring-shaped complete low-meter resistance or square resistance material (to form the connecting electrode 5 ), so that the layer of material is communicated with the resistance circuit 301 .

Referring to FIG. 11 , the present embodiment also discloses a low-temperature heating cigarette appliance using the above-mentioned heating element. The appliance is provided with conductive elastic sheets 6 for docking with the connecting electrodes 5 at the bottom of the insulating base 1 , and a plurality of conductive elastic sheets 6 are provided. A plurality of conductive elastic sheets 6 are arranged in a ring shape, thereby forming an annular cavity for inserting the heating element. The connecting electrode 5 is arranged on the insulating base 1 around its peripheral wall, and a connecting screw 7 (center electrode) is arranged in the middle of the annular cavity. The connecting screw 7 and the conductive elastic sheet 6 are respectively connected to the positive and negative poles of the power supply in the appliance. When installing the heating element and the appliance, insert the heating element into the annular cavity, turn the insulating base 1, and screw the connecting screw 7 into the threaded connection hole at the bottom of the support guide 2, so that the heating element can be firmly and reliably fixed to the appliance. At the same time, the two ends of the heating element 3 are respectively connected to the positive and negative poles of the power supply through the conductive elastic sheet 6 and the connecting screw 7 to realize the conduction of the heating circuit of the heating body, and the power supply can supply power to the heating body normally. In this way, the installation, disassembly and circuit connection of the heating body can be realized by rotating the heating body, and the operation is convenient.

The above-mentioned embodiments are only examples to clearly illustrate the present invention, and are not intended to limit the embodiments. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. Neither need nor can all embodiments be exhaustive here. However, the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. The utility model provides a heat-generating body is applied to low temperature heating cigarette utensil, includes insulating base member and support guide, be equipped with heating element on insulating base member's the outer wall, its characterized in that: the top end of the supporting guide piece is conical, a hollow cavity which is communicated up and down is arranged in the insulating base body, the supporting guide piece is fixedly arranged in the hollow cavity, the top end of the supporting guide piece is matched and extends out of the insulating base body, and the heating body is fixed in a low-temperature heating cigarette appliance through the supporting guide piece.

2. A heat-generating body as described in claim 1, characterized in that: the bottom end of the supporting guide piece is provided with a threaded connecting hole connected with a low-temperature heating cigarette appliance.

3. A heat-generating body as described in claim 1 or 2, characterized in that: and the outer walls at the two ends of the insulating base body are also provided with connecting electrodes for being connected with an external power supply, and the two connecting electrodes are respectively connected with the two ends of the heating element.

4. A heat-generating body as described in claim 3, characterized in that: the heating element comprises a resistance circuit covering the outer wall of the whole insulation base body and an insulation layer covering the resistance circuit, and the tail end of the resistance circuit is exposed out of the insulation layer and connected with the corresponding connecting electrode.

5. A heat-generating body as described in claim 4, characterized in that: the top of the insulating base body is provided with at least one through hole corresponding to the connecting electrode, and the through hole is filled with a conductive matrix for communicating the connecting electrode with the supporting guide piece.

6. A heat-generating body as described in claim 4, characterized in that: the end of the resistance circuit covers the whole part of the support guide extending out of the insulating base.

7. A heat-generating body as described in claim 4, characterized in that: the insulating base body is a tubular thin-walled part with an annular section, and the connecting electrode is annularly arranged around the tubular thin-walled part.

8. A heat-generating body as described in claim 7, characterized in that: the resistance circuit comprises a first section, a second section and a third section which are connected in sequence; wherein,

the first section and the second section are annularly arranged around the tubular thin-walled part, and the second section is continuously bent and distributed along the circumferential direction of the tubular thin-walled part.

9. A heat-generating body as described in claim 7, characterized in that: the whole resistance circuit is continuously bent and distributed along the circumferential direction of the tubular thin-walled part.

10. A low temperature heating cigarette device, characterized in that: a heat-generating body as described in any one of claims 1 to 9, which is fixedly installed inside an appliance by said support guide.

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