CN213604401U

CN213604401U - Circumferential heating assembly and aerosol generating device

Info

Publication number: CN213604401U
Application number: CN202022375162.7U
Authority: CN
Inventors: 孙守贵; 黄光建
Original assignee: Shenzhen Kangbote Technology Development Co ltd
Current assignee: Shenzhen Kangbote Technology Development Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-07-06
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses an aerosol generates device, it includes circumference heating element, this circumference heating element, including the heat-insulating material of heating tube, shell and solid, the heating tube is used for holding aerosol and generates substrate goods to generate substrate goods to the aerosol and heat, the shell cover is peripheral at the heating tube, and is equipped with annular cavity between shell and the heating tube, and heat-insulating material locates between heating tube and the shell, and heat-insulating material is full of the cavity. The utility model discloses an adiabatic pipe of current vacuum is replaced in the application of heat-insulating material, has not only reduced whole heating element's volume, has reduced the assembly degree of difficulty, simultaneously can the at utmost reduce heat leakage, improved the utilization ratio of energy, reduced shell temperature, and the utility model discloses make aerosol generating device's temperature control more accurate, heating time is shorter, and user's experience perception is more excellent.

Description

Circumferential heating assembly and aerosol generating device

Technical Field

The utility model relates to an aerosol generates the device field, specific theory relates to a circumference heating element and aerosol generates device.

Background

In existing aerosol-generating devices (e.g. heated non-burning smoking articles), an aerosol-generating substrate article (e.g. a tobacco rod) is heated by a heating element to produce an aerosol. The temperature of the heating element is controlled within a particular temperature range to ensure that the aerosol-generating substrate article releases the desired volatile compounds without producing and releasing undesired volatile compounds. Such aerosol-generating devices are becoming important devices in aerosol-generating processes.

The existing aerosol generating device has multiple heating modes, wherein the circumferential heating mode is widely applied because the heating is more uniform and the temperature control is more accurate. The heating element in the circumferentially heated assembly is a heating tube, the inner wall of which acts as an effective heating surface for direct contact heating of the aerosol-generating substrate article. The mode of heating by heat conduction needs to adopt heat insulation measures to prevent heat from leaking, and the problems of low heat conversion efficiency, scalding shell and the like caused by heat leaking are avoided.

The existing heat insulation measures are mostly carried out in a vacuum heat insulation pipe mode, and heat energy transmitted outwards (including conduction, convection and radiation) by a heating pipe is insulated inside the vacuum heat insulation pipe through the vacuum heat insulation pipe, so that only a small part of heat energy is leaked. However, the heat insulation mode cannot achieve sufficient heat insulation, and the problems of low heat utilization rate and scalding shell are still caused by heat leakage. In addition, the vacuum cavity of the vacuum heat insulation pipe is large, so that the volume of the whole product is large, and the assembly cost of the product is high; in some structures heated by electromagnetic heating, a metal vacuum heat insulation pipe cannot be used, and vacuum heat insulation is difficult to achieve by adopting a non-metal material.

These problems are troublesome in terms of improvement in heat utilization efficiency, reduction in heat leakage, reduction in cost, and improvement in performance, and therefore a heating device capable of replacing the vacuum heat-insulating pipe and sufficiently insulating heat is required.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, the utility model provides a circumference heating element and aerosol generate device.

The utility model discloses technical scheme as follows:

a circumferential heating assembly, comprising:

a heat generating tube for receiving and heating an aerosol-generating substrate article;

the shell is sleeved on the periphery of the heating tube, and an annular cavity is arranged between the shell and the heating tube;

and the solid heat-insulating material is arranged between the heating tube and the shell, and the cavity is filled with the heat-insulating material.

The utility model discloses according to the above-mentioned scheme, its characterized in that, the inner wall/outer wall of heating tube covers has the heating film, the heating film is connected with external circuit through heating pin;

or, the heating tube is made of ferromagnetic materials, an electromagnetic coil is sleeved outside the shell, and the electromagnetic coil is connected with an external circuit through a heating pin.

Further, the heating pin is made of any one of a metal wire, a wire rod, a PCB or an FPC.

According to the above scheme the utility model discloses, a serial communication port, the shell is for embracing the formula shell, and it includes storehouse and the preceding storehouse of shell behind the shell, the storehouse behind the shell with storehouse lock formation encircles before the shell of heating tube is whole.

Furthermore, the heat insulating material comprises a heat insulating material rear piece and a heat insulating material front piece, the heat insulating material rear piece is sleeved in the shell rear bin, and the heat insulating material front piece is sleeved in the shell front bin.

Furthermore, the sections of the thermal insulation material rear sheet and the thermal insulation material front sheet after being installed in place are both semicircular, and the thermal insulation material rear sheet and the thermal insulation material front sheet are tightly attached without gaps.

Furthermore, the rear housing and the front housing both comprise an upper support part, a hollow part and a lower support part, the hollow part is located between the upper support part and the lower support part, and the heating tube and the heat insulating material are sleeved in the hollow part.

Furthermore, a sealing ring is arranged between the inner side of the bottom of the hollow part and the heating tube.

According to the above scheme the utility model discloses, its characterized in that still includes the temperature measurement unit, the temperature measurement unit include the temperature measurement piece and with the temperature measurement pin that the temperature measurement piece is connected, the temperature measurement pin is connected with external circuit.

In another aspect, an aerosol-generating device comprises the circumferential heating assembly described above.

According to the above scheme the utility model discloses, its beneficial effect lies in, the utility model discloses a close holding formula's shell subassembly supports inside heating tube, heat-insulating material for this circumference heating element uses in the aerosol generation device such as electromagnetic heating, can reduce heat transfer, and replace current vacuum insulation pipe through heat-insulating material's application, has not only reduced whole heating element's volume, has reduced the assembly degree of difficulty, can the at utmost reduce heat leakage simultaneously, has improved the utilization ratio of energy, has reduced the shell temperature, and the utility model discloses make aerosol generation device's temperature control more accurate, heating time is shorter, and user's experience perception is more excellent.

Drawings

Fig. 1 is a schematic view of a conventional heat insulation structure.

FIG. 2 is a schematic view of another prior art insulation structure.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is a side sectional view of the present invention.

Fig. 5 is a schematic view of the top connection of the heat generating tube.

FIG. 6 is a schematic view of the bottom connection of the heat pipe.

In the figure, 111-heating tube; 112-vacuum insulation pipe; 113-PI heating film; 114-a PTC temperature measuring unit;

121-heating pipe; 122-plastic heat insulation pipe; 123-high temperature cavity;

211-housing rear compartment; 2111-spring plate; 2112-introduction inlet; 2113-boss; 212-shell front bin; 221-thermal insulation material back sheet; 222-a front sheet of insulating material; 230-a heat-generating tube; 231-arc flaring portion; 232-support position; 240-temperature measuring unit; 241-temperature measuring parts; 250-a solenoid coil; 251-a heating pin; 260-sealing ring.

Detailed Description

The invention is further described with reference to the following figures and embodiments:

as shown in fig. 1, in a conventional heat insulation structure of a circumferential heating assembly, a heating pipe 111 is used for circumferentially heating an aerosol-generating substrate product (e.g., cigarette), a vacuum heat insulation pipe 112 is sleeved outside the heating pipe 111, heat generated by the heating pipe 111 is insulated by the vacuum heat insulation pipe 112, and a PI heating film 113 and a PTC temperature measuring unit 114 are sequentially attached to the outside of the heating pipe 111 to realize a heating function.

As shown in fig. 2, in another insulation structure of a conventional circumferential heating assembly, a heating tube 121 is used for circumferentially heating an aerosol-generating substrate product (e.g., a cigarette), a plastic insulation tube 122 is sleeved outside the heating tube 121, a high-temperature cavity 123 is spaced between the plastic insulation tube 122 and the heating tube 121, and the plastic insulation tube 122 is used for isolating most of heat generated by the heating tube 121 in the high-temperature cavity 123.

The existing structures represented by the two insulation modes have the following defects:

(1) the preheating time is long, the existing circumferential heating structure needs 1 minute or more for heating to enable the aerosol generation substrate product to generate aerosol, and the user experience perception is poor; (2) the heat insulation effect is poor, the temperature of the shell is high, and after the heat insulation device is used for a period of time, heat generated by the heating pipe leaks, so that the temperature of the shell is very high, and a user can scald hands when using the heat insulation device; (3) the energy utilization rate is low, and a large amount of heat is leaked, so that more heat converted from power supply energy is wasted; (4) the assembly is difficult, a larger power supply needs to be assembled in order to increase the heating energy, the volume and the weight of the product are increased, the assembly is difficult, and the heat-insulating material is soft, so that the heat-insulating material is difficult to assemble into a cavity outside the heating pipe without a rigid support; (5) due to the temperature leakage, the control of the heating tube temperature is difficult to grasp, and the aerosol generation is unstable.

The defects of high shell temperature, long preheating time and low energy utilization rate are all caused by poor heat insulation of the heating assembly, and in the existing heating assembly: (1) a certain amount of air is sealed in a high-temperature area on the outer wall of the heating pipe, and heat is leaked due to convection of the air; (2) the residual air in the high-temperature area of the outer wall of the heating tube is not completely sealed, so that the high-temperature air leaks to take away part of heat; (3) the thermal conductivity of the material contacting with the outer wall of the heating pipe is too high, and the heat is rapidly taken away; (4) the contact area between the heating pipe and the part with high heat conductivity coefficient is too large, so that the heat resistance on a heat transfer path is very small, and a large amount of heat is leaked.

In order to solve the above problem, the utility model provides an aerosol generating device, including circumference heating element and the external circuit who is connected with circumference heating element. The circumferential heating assembly is used for circumferentially heating aerosol generating substrate products (such as cigarettes) and isolating heat so as to achieve the purposes of heat insulation and energy conservation; the external circuit is used for realizing the heating control of the circumferential heating assembly, and the existing control circuit design can be adopted, and is not limited in detail here.

As shown in fig. 3 to 6, a circumferential heating assembly includes: a heat pipe 230, a housing, and a solid insulating material. Wherein the heat generating tube 230 is for receiving and heating an aerosol-generating substrate article; the outer shell is sleeved on the periphery of the heating tube 230 to support the internal structure; the heat insulating material is disposed between the heat pipe 230 and the case to insulate the heat pipe 230 from heat.

The utility model discloses an adiabatic pipe of current vacuum is replaced in the application of heat-insulating material, has not only reduced whole heating element's volume, has reduced the assembly degree of difficulty, simultaneously can the at utmost reduce heat leakage, improved the utilization ratio of energy, reduced shell temperature, and the utility model discloses make aerosol generating device's temperature control more accurate, heating time is shorter, and user's experience perception is more excellent.

The specific structure of each part is as follows.

1. Heating tube

The heat generating tube 230 is used to heat the aerosol-generating substrate article. In one embodiment, the heat generating tube 230 itself has a heat generating film and independently constitutes a heat generating unit; in the second embodiment, the heat generating tube 230 forms a heat generating unit together with a heat generating film attached to an inner/outer wall thereof; in the third embodiment, the heat generating tube 230 is made of a ferromagnetic material, which constitutes a heat generating unit together with the electromagnetic coil 250 disposed outside the case. The heating unit is connected with an external circuit through the heating pin, and the external circuit controls the heating temperature of the heating unit through the heating pin.

Specifically, the method comprises the following steps: in the first embodiment, the heat generating tube 230 itself is connected to an external circuit through a heating pin, and direct heating is performed through the heat generating tube 230; in the second embodiment, the inner/outer wall of the heat generating tube 230 is covered with a heat generating film, the heat generating film is connected with an external circuit through a heating pin, and the heat is directly heated through the heat generating film; in the third embodiment, the electromagnetic coil 250 is sleeved outside the housing, the electromagnetic coil 250 is connected with an external circuit through the heating pin 251, the external circuit energizes the electromagnetic coil 250 through the heating pin 251, the electromagnetic coil 250 electromagnetically heats the heating tube 230 in an electromagnetic induction mode, and the heating process is quicker and more uniform.

In each of the above embodiments, the heating pins may be made of any one of a wire, a bar, a PCB or an FPC, which may be selected according to a specific product structure.

2. Outer casing

The shell realizes the support and fixation of each internal part, and an annular cavity is arranged between the shell and the heating tube 230.

The shell is for embracing formula shell, and storehouse 211 and the preceding storehouse of shell 212 behind its including the shell, and storehouse 211 and the preceding storehouse of shell 212 lock form behind the shell encircle the shell of heating tube is whole. The buckling of the rear shell bin 211 and the front shell bin 212 is a U-shaped shell part, heat insulating materials are placed between the shell and the heating tube 230 during assembly, the shell is well attached, the rear shell bin 211 and the front shell bin 212 are buckled and fixed, and the simple assembly of a product is realized.

The utility model provides a storehouse 211 and the preceding storehouse of shell 212 all include support portion, well kenozooecium and lower support portion behind the shell, well kenozooecium is located between support portion and the lower support portion. The upper supporting part is used for being connected with the whole machine shell and realizing the leading-in of the aerosol generating substrate product, the hollow part is used for accommodating the heating tube 230 and the heat insulating material, and the lower supporting part is fixed with the bottom of the whole machine shell so as to realize the supporting and fixing of the whole shell.

Preferably, the interior of the upper support portion is an inlet 2112 with a large top and a small bottom to facilitate smooth introduction of the aerosol-generating substrate product. The side wall of the upper support part in this embodiment is provided with a spring plate 2111, and the aerosol-generating substrate product is clamped and fixed by the spring plate 2111.

As shown in fig. 5 and 6, a protrusion 2113 protruding inward is provided on the inner side of the top of the hollow portion, and the protrusion 2113 contacts the tip of the heat generating tube 230. The utility model discloses a structural design of well kenozooecium top and bottom for shell and heating tube 230's the fixed form of point contact or line contact, the last thermal resistance of abundant increase heat-conduction route further reduces the heat and leaks. Specifically, the top end of the heating tube 230 is provided with an arc-shaped expanding portion 231 which is inclined outward, and the protrusion portion 2113 contacts with the arc-shaped expanding portion 231. The bottom of the hollow part is provided with a support platform which is contacted with the bottom end (support position 232) of the heating tube 230.

Preferably, a sealing ring 260 is disposed between the inner side of the bottom of the hollow portion and the heat generating tube 230, and a fluorine rubber sealing ring is preferably used in this embodiment.

The utility model discloses an assembly structure who embraces formula still has following advantage: (1) the rear housing bin 211 and the front housing bin 212 can seal and fix the heat-insulating material only through a buckling structure, so that the unexpected leakage of internal substances can be effectively avoided; (2) the rear shell bin 211 and the front shell bin 212 are of thin-wall structures, have good rigidity and injection plasticity, can be made of high-temperature-resistant materials with extremely low thermal conductivity (such as high-temperature plastics), and have lower product cost; (3) the rear housing 211 and the front housing 212 can clamp the two ends of the heating tube 230 only by point contact or line contact, and the heating tube 230 can be fixed while a large amount of heat generated by large-area contact can be well prevented from leaking.

3. Heat insulating material

The heat insulating material of the utility model is filled with the cavity between the shell and the heating tube 230, and is used for preventing the heat generated by the heating tube from leaking out in a large quantity. It is designed based on the specific shape of the housing and the heating tube 230, and is made of a heat insulating material. In order to adapt to the wrap-around shell, the thermal insulation material in this embodiment includes a thermal insulation material rear sheet 221 and a thermal insulation material front sheet 222, the thermal insulation material rear sheet 221 is sleeved in the shell rear chamber 211, and the thermal insulation material front sheet 222 is sleeved in the shell front chamber 212.

Preferably, the thermal insulation material rear panel 221 and the thermal insulation material front panel 222 are semi-circular in cross section after being mounted in place, and are tightly fitted without a gap so as to be more suitable for the shape and volume of the cavity.

The heat insulating material in this embodiment is made of a material having a thermal diffusion coefficient lower than that of air, so as to block heat loss to the maximum extent. In this embodiment, the thermal insulation material is specifically selected from a nano thermal insulation aerogel felt or a nano thermal insulation aerogel mat. The thermal conductivity of the material is extremely low, the thermal conductivity is not more than 0.019W/m xK at room temperature to 200 ℃, and the thermal conductivity is lower than that of air under the same temperature condition.

The heat pipe 230 wrapped by the low-thermal-conductivity material can greatly reduce the heat flux density of the whole side face of the heat pipe 230 and slow down the heat loss speed. The material is in a solid state, the space on the outer wall of the heating tube 230 can be filled with the material, air in the space can be exhausted, and in the heating process of the heating tube 230, because only solid heat-insulating material exists on the outer wall of the heating tube 230 and air convection does not exist, heat leakage caused by convection can be reduced, and heat brought away due to accidental air leakage is reduced.

4. Temperature measuring unit

The circumferential heating assembly may further include a temperature measuring unit 240, and the temperature of the heat generating pipe 230 is detected by the temperature measuring unit 240, so that the heating temperature of the heat generating pipe 230 is controlled by an external circuit.

The utility model provides a temperature measurement unit 240 includes temperature measurement piece 241 (temperature sensor) and the temperature measurement pin of being connected with temperature measurement piece 241, and the temperature measurement pin is connected with external circuit. Wherein: the temperature measuring part 241 is used for detecting the temperature of the designated position of the heating tube 230, and may be the heating tube 230 itself, a thermocouple formed by being installed on the outer wall of the heating tube 230 or connected with the heating tube 230, or an FPC board installed with a temperature sensing element; the temperature measurement pin is used for connecting an external control circuit and is made of any one of a metal wire, a metal bar, a PCB and an FPC. When the temperature measuring member 241 is the heating tube 230 itself, a separate temperature measuring pin is not required.

The utility model has the advantages of it is following:

(1) the utility model discloses can shorten preheating time greatly, the utility model discloses can be applied to electromagnetic heating's structure in, make preheating time can shorten to no longer than 20 seconds through electromagnetic heating's form.

(2) The utility model discloses reduced the temperature of complete machine shell, compared the product of current isolated structure in vacuum, the utility model discloses an aerosol generates the device after using equal time, and aerosol generates device complete machine shell temperature lower, and user's use perception is better.

(3) The utility model discloses an energy utilization is higher, owing to fully reduced thermal leakage, the utility model discloses an aerosol generating device can use the heat less to accomplish the formation of aerosol.

(4) The utility model discloses a close shell subassembly structure of embracing the formula, only adopt a pair of shell just can seal the inside with heating tube 230, heat-insulating material, temperature measurement unit isotructure to together fixedly, change the assembly direction into open by current axial, reduced part quantity, reduced the assembly degree of difficulty, and the product is smaller and more exquisite.

(5) The utility model discloses an inner structure is compacter, can introduce more temperature control modes, has not only simplified inner structure, makes the control by temperature change more accurate simultaneously, and the aerosol generates more stably.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

The above exemplary description of the present invention is made in conjunction with the accompanying drawings, and it is obvious that the present invention is not limited by the above manner, and various improvements made by the method concept and technical solution of the present invention or by directly applying the concept and technical solution of the present invention to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. A circumferential heating assembly, comprising:

2. A circumferential heating assembly according to claim 1, wherein the heat generating tube is connected to an external circuit through a heating pin;

or the inner wall/outer wall of the heating tube is covered with a heating film, and the heating film is connected with an external circuit through a heating pin;

3. A circumferential heating assembly as claimed in claim 2, wherein said heating pins are made of any of wire, bar, PCB or FPC.

4. A circumferential heating assembly according to claim 1, wherein the casing is a wrap-around casing, which includes a rear casing compartment and a front casing compartment, and the rear casing compartment and the front casing compartment are fastened to form a whole body encircling the heating tube.

5. A circumferential heating assembly as in claim 4 wherein said thermal insulation material comprises a rear sheet of thermal insulation material nested within said rear housing bin and a front sheet of thermal insulation material nested within said front housing bin.

6. A circumferential heating assembly as claimed in claim 5, wherein said rear and front insulating material sheets are semi-circular in cross-section when in place and are in close proximity.

7. A circumferential heating assembly according to claim 4, wherein the rear housing and the front housing each comprise an upper support, a hollow portion and a lower support, the hollow portion is located between the upper support and the lower support, and the heating tube and the heat insulating material are sleeved in the hollow portion.

8. A circumferential heating assembly as claimed in claim 7, wherein a sealing ring is provided between the inside of the bottom of the hollow portion and the heat generating tube.

9. The circumferential heating assembly of claim 1, further comprising a temperature measuring unit, wherein the temperature measuring unit comprises a temperature measuring part and a temperature measuring pin connected with the temperature measuring part, and the temperature measuring pin is connected with an external circuit.

10. An aerosol-generating device comprising a circumferential heating assembly according to any of claims 1 to 9.