CN104095295A - Smoking set with function of electromagnetic induction heating - Google Patents

Abstract

A smoking appliance heated by electromagnetic induction, which includes: a casing 2, which includes a battery 3 and a circuit board 4 electrically connected thereto, and an electromagnetic induction heater 7 electrically connected to the circuit board 4; wherein the electromagnetic induction The heater 7 includes a hollow iron core 10 and a coil 11 wound on the periphery of the hollow iron core 10, wherein the cavity in the hollow iron core 10 is used to accommodate tobacco products; wherein the circuit board has energy A voltage inverter that converts direct current to alternating current. In a preferred embodiment, one end of the electromagnetic induction heater 7 is connected to the filter tip 12, and the other end is fixed on the porous partition 8, and the holes on the porous partition 8 are connected with the holes in the cavity iron core 10. cavities connected. In a more preferred embodiment, the smoking appliance further includes a fan 6, which can blow air into the cavity through the holes of the porous partition 8; the fan 6 is controlled by the circuit board 4 or by an independent switch 9.

Description

Smoking appliance heated by electromagnetic induction

technical field

The invention belongs to the field of new electric heating cigarettes, and in particular relates to a smoking set using electromagnetic induction for heating.

background knowledge

With the strengthening of the public's awareness of the dangers of cigarettes and the strengthening of the government's control over cigarettes, tobacco companies around the world have stepped up the development of new tobacco products. At present, new tobacco products mainly include three categories: new cigarettes, smokeless tobacco products and electronic cigarettes. Among them, new cigarettes are closest to traditional cigarettes in terms of physiological feelings, psychological perception, and smoking methods, and have good development potential.

Existing studies have shown that most of the harmful components in traditional cigarette smoke are produced by pyrolysis, thermosynthesis and other reactions of tobacco during high-temperature combustion. Therefore, if the temperature at which cigarette smoke is produced can be reduced, that is, the smoke is generated by heating instead of burning tobacco, most of the thermal decomposition and thermal synthesis reactions can be reduced, and the release of harmful components in the smoke can be reduced overall. Since 1985, Philip Morris, Reynolds, Anglo-American and other large tobacco companies have successively carried out the research and development of new heating cigarettes, forming three main new heating cigarette technologies: electric heating new cigarettes, fuel heating new cigarettes and chemical heating New cigarettes.

In terms of new electric heating cigarettes, "Accord" developed by Philip Morris USA and "Heatbar" developed by Philip Morris International (PMI) are representatives of electric heating tobacco products , both of which are composed of special cigarettes and electric heaters. In terms of fuel-heated cigarettes, the heat sources used include combustible solids, liquids or gases. Among them, solid carbonaceous fuels have been commercialized, while combustible liquids or gases only have patents and no products. "Premier" launched by Reynolds in 1988 and "Eclipse" launched in 1995 are fuel-heated tobacco products, and the latter is an improved version of the former. The heat sources used by these two products are carbonaceous solid fuels. Physical and chemical reaction heating tobacco products are characterized in that the heat of heating tobacco comes from physical and chemical reactions. However, this type of product has poor control over heat, and the process is relatively complicated, so it has not yet been commercialized.

Among them, the electric heating new cigarette has the advantages of controllable heating temperature, flexible heating method, convenient and fashionable use, etc., and is more likely to cater to the consumption habits of different consumers and be accepted by consumers.

Worldwide, Philip Morris is in a leading position in the field of electric heating new cigarettes. Philip Morris (PM) has successively developed first-generation and second-generation Electrically Heated Cigarette Smoking Systems (EHCSS, Electrically Heated Cigarette Smoking System) such as Accord, Heatbar and other brands.同时，在电加热吸烟系统方面，菲利普-莫里斯公司公开了多项电加热新型卷烟发明专利(US6615840、US20070074734、US2007102013、US20110155151、US20050172976、US20040129280、US7690385、US20070256697、US20060070633、US20040261802、US20040200488、US7392809、US7293565 、US7234470、US7163015、US6810883、US6026820、US6040560、US5988176、US5967148、US5954979、US5934289、US5915387、US5902501、US5878752、US5750964、US5708258、US5692526、US5692525、US5692291、US5666978、US5666976、US5665262、US5591368、US5530225、US5505214、US5499636、US5498855 , US5432882, US5388594, US5372148, US5144962, US5060671), have introduced multiple electric heating smoking systems.

However, so far, the market tests of the two commercialized new electric heating cigarette products launched by Philip Morris have not been successful. low organ performance and poor sensory quality of cigarettes. The heater can affect the dry distillation of the smoking material through its heating efficiency, thereby indirectly affecting the sensory quality of the new cigarette. Therefore, the performance of the electric heater is one of the core factors affecting the development and market acceptance of new electric heating cigarette products.

At present, the traditional resistance heating and electric heating new cigarettes generally have the following problems: low heat utilization rate, long response time, difficult temperature control, poor stability and safety, and short service life.

There is still a need for smoking articles with new heaters.

Contents of the invention

The invention provides a smoking appliance heated by electromagnetic induction, which comprises: a shell (2), which includes a battery (3) and a circuit board (4) electrically connected thereto, and a battery (4) electrically connected to the circuit board (4). An electromagnetic induction heater (7); wherein the electromagnetic induction heater (7) includes a hollow core (10) and a coil (11) wound on the outer periphery of the hollow core (10), wherein the hollow The cavity in the cavity iron core (10) is used to accommodate tobacco products; wherein the circuit board has a voltage inverter capable of converting direct current into alternating current. The selection of the voltage inverter can be flexibly controlled by technicians. In a preferred embodiment, the voltage inverter can realize the inverter from DC 3.7V to AC 50V-220V. When alternating current is passed into the solenoid coil 11, it will generate an alternating magnetic field, and these alternating magnetic fields will then induce countless tiny eddy currents in the iron medium of the cavity iron core, causing the iron medium itself to heat itself at a high speed, playing the role of electric current. The role of magnetic induction heating. Wherein, if a rechargeable battery is used, a charging interface 17 can be provided at a suitable position of the casing 2 .

According to a preferred embodiment of the present invention, one end of wherein said electromagnetic induction heater (7) connects filter tip (12), and the other end is fixed on the porous partition (8), and the hole on this porous partition (8) is connected with The cavities in the cavity iron core (10) are connected. Wherein the filter can be any suitable filter. In a preferred embodiment, the filter consists of a cavity, an airflow channel, a ventilating baffle and a shell. Wherein the ventilation partition is placed between the electromagnetic induction heater and the filter tip to prevent the smoking material from entering the cavity of the filter tip.

According to a preferred embodiment of the present invention, the smoking device may further include: a fan (6), which can blow air into the cavity through the holes of the porous partition (8); the fan (6) is controlled by the circuit board ( 4) controlled or controlled by an independent switch (9). On the casing near the fan, vent holes communicating with the outside atmosphere are opened to provide an air source.

According to a preferred embodiment of the present invention, the smoking device of the present invention also includes: a suction sensor (16), which is arranged in the middle of the porous partition (8); The generated small pressure difference change or air flow change responds, and sends a signal to the circuit board (4), which is used to control the start and stop of the electromagnetic induction heater (7). In a preferred embodiment, the suction sensor also forms a chain control with the electromagnetic induction heater to adjust its heating power. In another preferred embodiment, the suction sensor can also form an interlock control with the fan, that is, the rotation speed of the fan can be adjusted according to the magnitude of the suction pressure sensed by the suction sensor. One implementation is that when the puff sensor senses a high puff pressure, it means that the overall puff resistance of the smoking appliance is high or the smoker wants to take a "deep puff", then the fan can be started or the speed of the fan can be appropriately increased to achieve Reduce the overall suction resistance to provide more air in contact with tobacco products, and at the same time, you can optionally increase the heating power of the electromagnetic induction heater to generate more smoke to meet the smoker's "deep inhalation" requirements; when When the puff sensor feels a small puff pressure, it means that the overall puff resistance of the smoking appliance is small or the smoker wants to "shallow puff", then the fan may not be activated or the fan speed may be appropriately reduced to increase the puff resistance to provide Less air is in contact with the tobacco product, and at the same time, the heating power of the electromagnetic induction heater can be optionally reduced to produce less smoke, meeting the smoker's "shallow inhalation" requirement.

In another preferred embodiment, the fan (6) and the electromagnetic induction heater (7) are connected to the same AC current output port on the circuit board (4), so that the AC frequency passing through the two is the same . The advantage of the same-frequency design is that when the electromagnetic induction heater works at high power at high frequency and generates larger smoke, the fan also works at high frequency to provide more air volume.

According to a preferred embodiment of the present invention, between the hollow iron core 10 and the coil 11 of the electromagnetic induction heater (7), a heat insulating layer (14) and an insulating layer (15) are wrapped sequentially from the inside to the outside. ).

According to a preferred embodiment of the present invention, wherein the casing (2) is divided into two sections, one section accommodates the battery (3) and the circuit board (4), and the other section accommodates the electromagnetic induction heater (7), and the two sections are detachable or, the housing (2) is divided into three sections, the first section accommodates the battery (3) and the circuit board (4), the second section accommodates the fan (6), and the third section accommodates the electromagnetic induction heater ( 7); the detachable connection between the second section and the other two sections. Some examples of detachable connections are screw interface connections or bayonet connections.

According to a preferred embodiment of the present invention, wherein the switch (9) has two modes of preheating mode and cleaning mode, as shown in Figure 3, wherein when the smoker starts the preheating mode, the electromagnetic induction heater starts heating, and the The tobacco product is preheated to a temperature T1 close to its smoking temperature (for example, T1=80-90°C), and then the electromagnetic induction heater stops heating, and only starts heating when the temperature of the tobacco product is lower than this T1 temperature to maintain the T1 temperature , which can be controlled by a conventional temperature control circuit on the circuit board 4 . In the preheating mode, when the puff sensor (16) senses the smoker's puffing behavior, the electromagnetic induction heater (7) is activated with a larger power to heat the tobacco product to a temperature higher than its smoking temperature. The temperature T2 so that the smoker can inhale the smoke. After the smoking is finished, the switch is switched to the cleaning mode, and the fan (6) is started to clean up the tobacco ash in the iron core. When necessary, the smoking set can be disassembled to facilitate dust removal.

According to a preferred embodiment of the present invention, the part of the housing (2) surrounding the fan (6) has vent holes communicating with the outside atmosphere. The ventilation hole can be used as an air passage during smoking to draw outside air into the tobacco product, and carry the smoke generated when the tobacco product is heated, and enter the smoker's mouth through the filter tip. When the smoking appliance of the present invention needs to be cleaned, the ventilation hole can also provide air as an air source for the fan.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention, wherein, 1-battery baffle, 2-housing, 3-battery, 4-circuit board, 5-spiral interface, 6-fan, 7-electromagnetic induction heater, 8-porous partition Plate, 9—switch, 10—cavity iron core, 11—coil, 12—filter, 13—air flow channel, 14—heat insulation layer, 15—insulation layer, 16—suction sensor, 17—charging interface.

FIG. 2 is a cross-sectional view of the porous separator 8 in FIG. 1 .

Figure 3 is a diagram of the working mode of the heating system.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples are only used to illustrate the present invention, not to limit the present invention.

As shown in Figures 1 and 2, the present invention provides a smoking appliance that utilizes electromagnetic induction for heating. The smoking set mainly includes a cylindrical shell 2, which is divided into three sections. The first section is a power supply section, and the bottom of this section is a battery baffle 1 with a charging interface 17 on it. The main part of the first section is a battery compartment. It contains a battery 2 and a circuit board 4 electrically connected to the battery 2. The circuit board is equipped with a voltage inverter, which can realize the transformation from DC3.7V to AC50V-220V. The second section is a cleaning section, which mainly includes a fan 6, and the second section is detachably connected with the first section by a threaded interface 5. A switch 18 can be arranged on the first segment or the second segment, for manually controlling the opening and closing of the circuit. The shell of the second section is provided with vent holes near the end of the heater. The third section is a heating section, which mainly includes an electromagnetic induction heater 7, and the electromagnetic induction heater 7 mainly includes a cavity iron core 10 and a solenoid coil 11 surrounding the outside of the cavity iron core, between the two from inside to outside A heat-insulating layer (14) and an insulating layer (15) are also wrapped in sequence. A porous partition 8 is arranged between the second section and the third section, and the holes on the porous partition 8 are used for passing air.

A suction sensor 16 is fixed in the center of the porous partition 8, and the suction sensor is in the middle of the partition and communicates with the cavity iron core 10; small holes are distributed on the porous partition to connect the cleaning components and the heater;

The electromagnetic induction electric heating system includes a switch 9 installed on the power supply or the shell of the cleaning component. The electrical connection between the switch 9 and the circuit board 4 can be designed according to design requirements, so that the smoking appliance implements different operation modes in different modes of the switch 9 .

The shell of the cleaning section has vent holes, and the vent holes are connected to the iron core cavity of the electromagnetic induction heater through the partition plate 8 .

The set heating temperature range of the electromagnetic induction heater is 200°C-400°C.

A smoking material is placed in the cavity of the electromagnetic induction heating element, and the smoking material may be in solid or liquid form.

The filter can be filled with functional adsorption material or composite filter material or conventional filter tow, so as to absorb harmful components of smoke, or to compensate smoke in terms of flavor enhancement and moisture retention. These are conventional filter tip designs and will not be described in detail.

The working process of the smoking set of the present invention is as follows: when in use, press the switch twice to start the battery 3, through the action of the inverter, the direct current of the battery is converted into high-voltage alternating current, the electromagnetic induction heater 7 is started, and enters the preheating mode , when the heating temperature reaches the predetermined temperature, it enters the temperature control stage; during suction, the electromagnetic induction heater is activated by the suction sensor 16 to heat with a higher power, and then enters the suction mode from the temperature control mode, and the electromagnetic induction heater passes through its The iron core 10 heats the smoking material inside the iron core, and ensures that the smoking material produces a sufficient amount of smoke; the generated smoke enters the filter 12 with the air flow; the cavity of the filter 12 can be filled with filter rod materials for traditional cigarettes Appropriate adsorption and cooling of the smoke can also be done by adding functional compensating materials to supplement and modify the smoke in terms of flavor enhancement and moisturizing, and then the smoke enters the smoker's mouth through the airflow channel 13 .

When cleaning, take off the filter, press the switch 9 continuously five times, start the cleaning program, start the cleaning fan, clean up the dust scattered in the heating chamber, and pour the blown dust down through the heating part near the filter tip. out.

If the power is insufficient, the battery 3 can be charged by an external power source through the charging interface 17 .

Compared with traditional resistance heaters, the present invention uses electromagnetic induction for heating, and converts electric energy into heat energy through the principle of electromagnetic induction. Compared with traditional resistance heaters, it has long service life, safety, reliability and high efficiency. Energy saving, accurate temperature control, good insulation, fast heating time and other advantages. Applying it to electric heating new cigarettes can also simplify the production process of heating elements.

In addition, in the present invention, the suction sensor is linked with the fan and the electromagnetic induction heater to form a chain control, and the speed of the fan and the heating power of the electromagnetic induction heater can be controlled according to the level of suction pressure sensed by the suction sensor. Adjust the air intake volume and smoke volume to meet the requirements of smokers for "deep inhalation" or "shallow inhalation".

Claims (10)

1. a smoking set that utilizes electromagnetic induction to heat, it comprises: shell (2), in it, comprise battery (3) and the circuit board (4) being electrically connected to it, and the electromagnetic induction heater (7) being electrically connected to circuit board (4); Wherein said electromagnetic induction heater (7) comprises cavity iron core (10) and is wrapped in the solenoid (11) in this cavity iron core (10) periphery, and wherein the cavity in this cavity iron core (10) is used for holding tobacco product; On wherein said circuit board, have and direct current can be changed into the voltage inverter of alternating current.

2. the smoking set of claim 1, one end of wherein said electromagnetic induction heater (7) connects filter tip (12), it is upper that the other end is fixed on porous barrier (8), and the hole on this porous barrier (8) is communicated with the cavity in described cavity iron core (10).

3. the smoking set of claim 2, it also comprises: fan (6), it can dry through the hole of porous barrier (8) in described cavity; This fan (6) is by described circuit board (4) control or by independently switch (18) control.

4. the smoking set of claim 2, it also comprises: puff sensor (16), it is arranged in the middle of described porous barrier (8); This puff sensor (16) can be sent signal to circuit board (4), for controlling the startup and the heating power of closing or regulate electromagnetic induction heater (7) of electromagnetic induction heater (7).

5. the smoking set of claim 1 is wherein from inside to outside enclosed with successively thermal insulation layer (14) and insulating barrier (15) between described hollow iron core (10) and solenoid (11).

6. the smoking set of claim 1, wherein said shell (2) is divided into two sections, and one section is held battery (3) and circuit board (4), and another section is held electromagnetic induction heater (7), detachable connection between two sections; Or described shell (2) is divided into three sections, first paragraph holds battery (3) and circuit board (4), and second segment holds described fan (6), and the 3rd section is held electromagnetic induction heater (7); Second segment with other two sections between detachable connection.

7. the smoking set of claim 3, its housing (2) in that part of described fan (6), there is the passage being communicated with ambient atmosphere.

8. the smoking set of claim 3, wherein said switch (9) has preheating mode and two kinds of patterns of cleaning mode, wherein under preheating mode, electromagnetic induction heater (7) heats tobacco product with the first power and remains to the temperature of closing on its temperature of being fuming, and the suction behavior that senses smoker in puff sensor (16) is just to be fuming more than temperature tobacco product is heated to it than first the second more powerful energetic start up electromagnetic induction heater (7); Under cleaning mode, start fan (6), for the tobacco in cleaning iron core is grey.

9. the smoking set of claim 3, wherein said fan (6) forms chain control with described puff sensor (16), and the size of the swabbing pressure that rotating speed of fan can be experienced according to puff sensor is adjusted.

10. the smoking set of claim 3, wherein said fan (6) is connected to the same alternating current output port on described circuit board (4) with described electromagnetic induction heater (7), so that identical by the ac frequency of the two.