Energy converter and microwave heating non-combustion smoking set

Abstract

The invention provides an energy converter and a microwave heating non-combustion smoking set, and belongs to the technical field of electronic cigarettes, the microwave heating non-combustion smoking set comprises a supporting body, an energy feed-in conductor and an energy conversion heating conductor, and the supporting body is provided with a heating cavity for inserting and pulling out a cigarette; the energy feed-in conductor is spirally wound on the lower part of the outer surface of the support body; the lower end of the energy feed-in conductor is connected with a microwave power source and serves as a feed-in end of microwave energy; the energy conversion heating conductor is wound on the upper portion of the outer surface of the supporting body in a double-helix mode and wound outside the heating cavity of the supporting body, and the lower end of the energy conversion heating conductor is connected with the upper end of the energy feed-in conductor so that microwave energy can be converted into electromagnetic waves. The microwave heating non-combustion smoking set has the advantages of being small in size, small in cigarette inserting and pulling resistance, good in structural strength, not prone to being broken and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic cigarettes, and in particular relates to an energy converter and a microwave heating non-burning smoking device. Background Art

[0002] Microwave-heated non-burning tobacco products are a new type of tobacco product developed in recent years. They use external microwave energy, microwave penetration and microwave-induced friction heating of polar molecules in tobacco, which causes the release of effective ingredients in tobacco to produce smoke. Microwave-heated non-burning tobacco products can significantly reduce the release of harmful ingredients in tobacco. Compared with traditional burning tobacco, the safety of the product has been significantly improved. Microwave-heated non-burning tobacco products have the advantages of rich taste, mellow smoke, and no ash pollution, and have been recognized by the market.

[0003] Current microwave heating-without-burning smoking devices generally have the problems of large microwave energy converter size, large cigarette insertion and removal damping, weak structural strength, and easy breakage during use. Summary of the invention

[0004] The embodiments of the present invention provide an energy converter and a microwave heating without burning smoking device, aiming to realize the requirements of the microwave heating without burning smoking device for a wide bandwidth and miniaturization of the microwave energy converter, and solve the problems of large damping during insertion and removal of cigarettes, weak structural strength, and easy breakage during use.

[0005] In the first aspect, in order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an energy converter, including: a support body, an energy feeding conductor and an energy conversion heating conductor, the support body is made of ceramic material, and has a heating cavity for plugging and pulling out cigarettes; the energy feeding conductor is spirally wound on the lower part of the outer surface of the support body; the lower end of the energy feeding conductor is connected to a microwave power source as the feeding end of microwave energy; the energy conversion heating conductor is double-helix wound on the upper part of the outer surface of the support body, and is wound on the outside of the heating cavity of the support body, and the lower end of the energy conversion heating conductor is connected to the upper end of the energy feeding conductor, so that the microwave energy is converted into electromagnetic waves.

[0006] In combination with the first aspect, in one achievable manner, the energy conversion heating conductor includes parallel double-start helical wires helically wound around the outer surface of the support body.

[0007] In combination with the first aspect, in one achievable manner, the pitch of the double-start helix is ​​2 mm.

[0008] In combination with the first aspect, in one feasible manner, the double-headed helical line includes an ascending helical line and a descending helical line, and the double-headed helical line is wound with a metal wire, and the metal wire is spirally wound along the outer surface of the support body to the upper end of the support body, and then turns back and descends in the opposite direction.

[0009] In combination with the first aspect, in one achievable manner, a pitch of the spiral line of the energy feed conductor is 0.8 mm.

[0010] In combination with the first aspect, in one achievable manner, the energy feeding conductor and the energy conversion heating conductor are fixed on the support body by printing.

[0011] In combination with the first aspect, in one achievable manner, the energy feeding conductor and the energy conversion heating conductor are fixed on the support body by winding with metal wires; and a spiral groove for positioning the metal wires is provided on the outer surface of the support body.

[0012] In a second aspect, an embodiment of the present invention further provides a microwave heating non-burning smoking device, comprising: an outer shell, and a microwave source arranged at the bottom of the outer shell; the energy converter is arranged at the upper part of the outer shell, and the lower end of the energy feeding conductor is connected to the microwave source.

[0013] Compared with the prior art, the energy converter provided by the present invention has the following beneficial effects: (1) The present invention adopts a single-helix + double-helix microwave energy converter, which greatly reduces the volume occupied by the conductor by means of spiral winding, and is conducive to reducing the external dimensions of the energy converter, thereby realizing the miniaturization of the tobacco product, and solving the problem of large transducer size commonly existing in microwave heating without burning tobacco products; (2) The single-helix microwave energy is used to feed in microwave energy, which is conducive to the double-helix microwave power source energy into electromagnetic waves, and the good penetration of microwaves is used to uniformly apply them to cigarettes. Water molecules and other polar molecules in tobacco rotate under the action of the microwave electromagnetic field, and generate heat under the friction of the molecular rotation, so that the effective substances in the tobacco are uniformly released, and the use effect of the tobacco product is improved; (3) The support body is made of ceramics. Precision ceramic materials have the advantages of high structural strength and high temperature resistance, which ensures that tobacco-type cigarettes are not easily broken during insertion and removal and daily cleaning of tobacco products, and solves the problems of large insertion and removal damping and weak structural strength; (4) The double-helix energy conversion heating conductor can meet the requirements of microwave heating without burning tobacco products for large bandwidth of microwave transducers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an energy converter provided by an embodiment of the present invention;

[0015] Figure 2A port test parameter diagram of the microwave energy converter provided by the present invention;

[0016] Description of reference numerals:

[0017] 1. Support body; 2. Energy feeding conductor; 3. Energy conversion heating conductor. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] See also Figure 1 , the energy converter provided by the present invention is now described. The energy converter comprises a support body 1, an energy feeding conductor 2 and an energy conversion heating conductor 3. The support body 1 is made of ceramic material and has a heating cavity for inserting and removing cigarettes; the energy feeding conductor 2 is spirally wound on the lower part of the outer surface of the support body 1; the lower end of the energy feeding conductor 2 is connected to a microwave power source as a feeding end of microwave energy; the energy conversion heating conductor 3 is double-helix-wound on the upper part of the outer surface of the support body 1 and is wound outside the heating cavity of the support body 1, and the lower end of the energy conversion heating conductor 3 is connected to the upper end of the energy feeding conductor 2, so that microwave energy is converted into electromagnetic waves.

[0020] Compared with the prior art, the energy converter provided by the present invention has the following beneficial effects: (1) The present invention adopts a single-helix + double-helix microwave energy converter, which greatly reduces the volume occupied by the conductor by means of spiral winding, and is conducive to reducing the external dimensions of the energy converter, thereby realizing the miniaturization of the tobacco product, and solving the problem of large transducer size commonly existing in microwave heating without burning tobacco products; (2) The single-helix microwave energy is used to feed in microwave energy, which is conducive to the double-helix microwave power source energy into electromagnetic waves, and the good penetration of microwaves is used to uniformly apply the energy to the cigarette. The water molecules and other polar molecules in the tobacco rotate under the action of the microwave electromagnetic field, and generate heat under the friction of the molecular rotation, so that the effective substances in the tobacco are uniformly released, and the use effect of the tobacco product is improved; (3) The support body 1 is made of ceramic. The precision ceramic material has the advantages of high structural strength and high temperature resistance, which ensures that the tobacco-type cigarette is not easily broken during the plug-in and unplugging and daily cleaning of the tobacco product, and solves the problem of large plug-in damping and weak structural strength; (4) The double-helix energy conversion heating conductor 3 can meet the requirement of microwave heating without burning tobacco products for a large bandwidth of the microwave transducer.

[0021] Since the diameter of the heat-not-burn tobacco cartridge is about 7.2mm, the heating cavity of the microwave heat-not-burn tobacco device adopts a microwave resonant cavity with a diameter of about 9mm. In addition to placing the tobacco cartridge, the microwave resonant cavity's main function is to constrain the electromagnetic energy inside it so that it acts on the tobacco and prevents microwave energy leakage. The 9mm diameter microwave resonant cavity is equivalent to a circular waveguide. The waveguide characteristics of this size are cutoff modes in the 2.4GHz frequency band, and a new method is needed to design a microwave energy converter.

[0022] The present invention utilizes a combination of a single helix and a double helix. The length of the conductor is equivalent to the inductance L, the diameter of the conductor is equivalent to the resistance R, and the spacing of the conductors is equivalent to the capacitance C. A specific structure of the LRC equivalent circuit is formed in the resonant cavity. A simple single-order RLC equivalent circuit cannot achieve sufficient working bandwidth. It can only form a narrow bandwidth at a specific frequency and have a higher Q value at the corresponding frequency. The double helix part of the present invention consists of an ascending helix and a descending helix. The conductor of the ascending helix part generates a first-order R rise , L rise , C rise Equivalent value, the conductor of the descending spiral part produces another order R fall , L fall , C fall The equivalent value is that the descending spiral conductor is turned back at the top of the supporting material, that is, the top of the ascending spiral, and reversely winds to form the descending spiral. The ascending spiral conductor and the descending spiral conductor form a parallel relationship, thereby generating an equivalent capacitance between the two sets of spirals, making the two sets of equivalent R parallel , L parallel , C parallel Cross-coupling occurs between the two, further expanding the working bandwidth of the transducer.

[0023] The conductor of the double helix part uses the RLC circuit equivalent formed by the complex structural relationship. This equivalent circuit satisfies the large working bandwidth, which will inevitably lead to a decrease in the average Q value within the working band. The present invention adds a group of single helix conductors at the microwave energy feeding end to generate a first-order equivalent RLC circuit with a higher Q value. single , L single , C single Circuit, this group of high Q value parameters can optimize the overall in-band characteristics of the transducer, especially improve the return loss and enhance the conversion efficiency of the transducer.

[0024] The transducer composed of single helix + double helix conductors in the present invention forms a set of comprehensive equivalent distributed parameter values ​​R in the microwave resonant cavity. transducer , L transducer , C transducer , and then feed the microwave energy into the interior of the resonant cavity, converting it into electromagnetic field radiation, achieving a broadband, high-efficiency resonance effect in the heating cavity.

[0025] In some embodiments, see Figure 1 The energy conversion heating conductor 3 includes parallel double-headed helical wires helically wound on the outer surface of the support body 1.

[0026] In some embodiments, the pitch of the double-start helix is ​​2 mm.

[0027] In some embodiments, see Figure 1 The double-headed helical line includes an ascending helical line and a descending helical line. The double-headed helical line is wound with a metal wire. The metal wire is spirally wound along the outer surface of the support body 1 to the upper end of the support body 1, and then turns back and descends in the opposite direction.

[0028] In some embodiments, the pitch of the helical line of the energy feeding conductor 2 is 0.8 mm. The single-helical energy feeding conductor 2 and the double-helical energy conversion heating conductor 3 together constitute the energy conversion core of the transducer.

[0029] The vertical portion of the single-helix energy feeding conductor 2 is a microwave energy feeding end, which mainly utilizes the distributed inductance of the helix portion to improve and enhance the return loss of the port and improve the energy feeding efficiency.

[0030] In order to further enhance the structural strength, a protective layer may be added to the outside of the support, such as glazing and sintering and an outer shell that is resistant to high temperatures, has good wave transmission properties and is easy to clean.

[0031] In some embodiments, see Figure 1 The energy feeding conductor 2 and the energy conversion heating conductor 3 are fixed on the support 1 by printing.

[0032] In some embodiments, see Figure 1 The energy feeding conductor 2 and the energy conversion heating conductor 3 are fixed on the support body 1 by winding metal wires; a spiral groove for positioning the metal wire is provided on the outer surface of the support body 1, which has a good positioning and limiting effect on the metal wire.

[0033] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0034] Based on the same inventive concept, an embodiment of the present application also provides a microwave heating non-burning smoking device, comprising: an outer shell, and a microwave source arranged at the bottom of the outer shell; the energy converter is arranged at the upper part of the outer shell, and the lower end of the energy feed conductor is connected to the microwave source.

[0035] The microwave heating non-burning smoking device provided by the present invention has the advantages of small size, small resistance to inserting and removing cigarettes, good structural strength, not easy to break, etc.

[0036] See also Figure 2 The curve graph shows that the microwave energy converter of the present invention has a large bandwidth, which can achieve a -10dB bandwidth of 230MHz and a -15dB bandwidth of 130MHz centered at 2.45GHz, and is very suitable as a microwave energy converter for microwave heating non-combustion smoking utensils.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy converter, characterized in that: include: The support body (1) is made of ceramic material and has a heating cavity for inserting and removing cigarettes; An energy feeding conductor (2) is spirally wound around the lower part of the outer surface of the support body (1); the lower end of the energy feeding conductor (2) is connected to a microwave power source to serve as a feeding end for microwave energy; as well as The energy conversion heating conductor (3) is double-helix-wound on the upper part of the outer surface of the support body (1) and is wound outside the heating cavity of the support body (1); the lower end of the energy conversion heating conductor (3) is connected to the upper end of the energy feeding conductor (2), so that microwave energy is converted into electromagnetic waves.

2. The energy converter according to claim 1, characterized in that The energy conversion heating conductor (3) comprises parallel double-headed helical wires helically wound around the outer surface of the support body (1).

3. The energy converter according to claim 2, characterized in that The pitch of the double-headed helical line is 2 mm.

4. The energy converter according to claim 2, characterized in that The double-headed helical line comprises an ascending helical line and a descending helical line. The double-headed helical line is wound with a metal wire. The metal wire is wound in an ascending spiral along the outer surface of the support body (1) to the upper end of the support body (1), and then turns back and descends in the reverse direction.

5. The energy converter according to claim 1, characterized in that The pitch of the helical wire of the energy feed conductor (2) is 0.8 mm.

6. The energy converter according to claim 1, characterized in that The energy feeding conductor (2) and the energy conversion heating conductor (3) are fixed on the support body (1) by printing.

7. The energy converter according to claim 1, characterized in that The energy feeding conductor (2) and the energy conversion heating conductor (3) are fixed on the support body (1) by winding with metal wires; and a spiral groove for positioning the metal wires is provided on the outer surface of the support body (1).

8. A microwave heating non-burning smoking device, characterized in that: include: An outer shell, and a microwave source arranged at the bottom of the outer shell; The energy converter according to any one of claims 1 to 7 is arranged on the upper part of the outer shell, and the lower end of the energy feeding conductor (2) is connected to the microwave source.

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