Electronic cigarettes and smoking utensils

Abstract

The present invention discloses an electronic smoking device and a smoking utensil, wherein the electronic smoking device comprises a smoking device body, a heating element, an induction coil, a control mainboard and a temperature measuring module, wherein the induction coil comprises a first coil and a second coil. The present invention hierarchically designs the induction coils and utilizes two sets of bipolar induction coils to perform induction heating on the heating element, thereby increasing the conduction heat power of the heating element, and sets the sensing point of the temperature measuring module on the heating element and between the first coil and the second coil, thereby accurately measuring the temperature on the heating element. Compared with the technical solution of the prior art in which the sensing point is set outside the coil, the technical solution provided by the present invention measures a more accurate temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic smoking devices, and in particular to an electronic smoking device and a smoking utensil. Background Art

[0002] At present, the heat-not-burn electronic cigarette consists of a smoking device and a cigarette cartridge. Usually, a heating chamber is provided in the smoking device, and an induction coil connected to the current is arranged around the heating chamber. An induction heating element is provided in the heating chamber to heat the tobacco, tobacco or its extract in the electronic cigarette cartridge by electromagnetic eddy current heating, thereby volatilizing and producing smoke.

[0003] The heating temperature of electronic cigarettes plays a decisive role in the smoking quality of related products such as e-liquid or heat-not-burn cigarette cartridges. In the prior art, electronic cigarette testing is mostly done by gathering the products together and testing the quality of the products from aspects such as product structure, product surface temperature and sensory quality evaluation. However, the temperature detected by this testing method is not accurate enough. Summary of the invention

[0004] The main purpose of the present invention is to provide an electronic smoking device, aiming to improve the accuracy of measuring the heating temperature of the electronic smoking device.

[0005] In order to achieve the above-mentioned purpose, the electronic smoking device proposed in the present invention comprises:

[0006] A smoking device body, wherein a heating cavity is formed in the smoking device body, and an inlet for inserting smoking materials into the heating cavity is also provided on the smoking device body;

[0007] A heating element is disposed in the heating chamber;

[0008] an induction coil, arranged in the smoking device body, for generating an alternating magnetic field so as to cause the heating element to generate a thermal eddy current effect to heat the smoking material inserted into the heating chamber;

[0009] A control main board, which is arranged in the smoking device body and is electrically connected to the induction coil;

[0010] A temperature measuring module is arranged on the smoking device body and is electrically connected to the control main board; the temperature measuring module contacts the heating element to form a sensing point;

[0011] The induction coil includes a first coil and a second coil connected in parallel, the first coil is close to the entrance, the second coil is close to the bottom wall of the heating chamber, and there is a first distance between the first coil and the second coil; the sensing point is set within the first distance.

[0012] In one embodiment, the heating element includes a heating rod and a heating barrel, and there is a second distance between the bottom surface of the heating barrel and the bottom wall of the heating cavity. A accommodating cavity with an opening is formed in the heating barrel, and the heating rod passes through the heating barrel from the opening; and the opening is arranged corresponding to the inlet so that the cigarette cartridge can be inserted into the accommodating cavity from one side of the opening.

[0013] In one embodiment, the bottom surface of the heating barrel is located within the first spacing, and the sensing point is arranged on the bottom surface of the heating barrel; or, the sensing point is arranged below the bottom surface of the heating barrel.

[0014] In one embodiment, a heat-resistant layer is provided at the bottom of the heating barrel.

[0015] In one embodiment, the material of the heat-resistant layer is PEEK.

[0016] In one embodiment, the heating rod is cylindrical, the heating barrel is cylindrical, and the heating rod and the heating barrel are coaxially arranged.

[0017] In one embodiment, the radius of the heating barrel is R, and the radius of the heating rod is 0.3R to 0.6R.

[0018] In one embodiment, the heating element is detachably connected to the smoking device body.

[0019] In one embodiment, the heating element is made of iron, and the induction coil is made of copper.

[0020] The present invention also proposes a smoking device, which includes a power supply device and the aforementioned electronic smoking device, wherein the power supply device is used to provide an alternating current to the induction coil in the electronic smoking device. The electronic smoking device includes a smoking device body, a heating element, an induction coil, a control mainboard and a temperature measurement module, wherein a heating chamber is formed in the smoking device body, and an entrance for inserting tobacco into the heating chamber is also provided on the smoking device body; the heating element is arranged in the heating chamber; the induction coil is arranged in the smoking device body, and is used to generate an alternating magnetic field so that the heating element generates a thermal eddy current effect to heat the tobacco inserted into the heating chamber; the control mainboard is arranged in the smoking device body and is electrically connected to the induction coil; the temperature measurement module is arranged on the smoking device body and is electrically connected to the control mainboard; the temperature measurement module contacts the heating element to form a sensing point; wherein the induction coil includes a first coil and a second coil connected in parallel, the first coil is close to the entrance, the second coil is close to the bottom wall of the heating chamber, and there is a first spacing between the first coil and the second coil; the sensing point is arranged within the first spacing.

[0021] The present invention adopts a hierarchical design of the induction coils and utilizes two groups of bipolar induction coils to perform induction heating on the heating element, thereby improving the heat conduction power of the heating element, and the sensing point of the temperature measurement module is set on the heating element and between the first coil and the second coil, thereby being able to more accurately measure the temperature on the heating element. Compared with the technical solution of the prior art in which the sensing point is set outside the coil, the technical solution provided by the present invention can measure the temperature more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of the electronic smoking device of the present invention;

[0024] Figure 2 for Figure 1 A side view of

[0025] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure of the heating element;

[0027] Figure 5 for Figure 4 A side view of

[0028] Figure 6 for Figure 5 Cross-sectional view of BB.

[0029] Description of Figure Numbers:

[0030] Label name Label name 10 Electronic smoking equipment 300 Heating elements 100 Smoking utensils 310 Heating rod 110 Heating chamber 320 Heating barrel 111 Bottom wall of heating chamber 321 Opening 120 Entrance 322 Accommodation cavity 200 Induction coil 323 Heat resistant layer 210 First coil 324 Bottom of heating barrel 220 Second coil 400 Sensing point 1 Smoking utensils

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides an electronic smoking device.

[0036] In the embodiment of the present invention, Figures 1 to 6As shown, the electronic smoking device 10 includes a smoking device body 100, a heating element 300, an induction coil 200, a control main board and a temperature measuring module. A heating chamber 110 is formed in the smoking device body 100, and an entrance 120 for inserting a smoking material into the heating chamber 110 is also provided on the smoking device body 100; the heating element 300 is arranged in the heating chamber 110; the induction coil 200 is arranged in the smoking device body 100 and is used to generate an alternating magnetic field so that the heating element 300 generates a thermal eddy current effect to heat the smoking material inserted into the heating chamber 110; the control main board is arranged in the smoking device body. 100, and is electrically connected to the induction coil 200; a temperature measuring module is arranged on the smoking device body 100; and is electrically connected to the control main board; the temperature measuring module is in contact with the heating element 300 to form a sensing point 400; wherein the induction coil 200 includes a first coil 210 and a second coil 220 connected in parallel, the first coil 210 is close to the inlet 120, the second coil 220 is close to the bottom wall of the heating chamber 110, and there is a first distance between the first coil 210 and the second coil 220; the sensing point 400 is arranged within the first distance.

[0037] The main body 100 of the smoking device is used to install and fix each module, and is also used as a cigarette rod. The main body 100 of the smoking device can be of any suitable shape, such as a cylindrical shape, and can be made of various materials, such as metal, plastic or ceramic. A heating chamber 110 is formed on the main body 100 of the smoking device, and an entrance 120 is provided on the main body 100 of the smoking device for inserting the smoking material into the heating chamber 110. In order to facilitate the use of the user, the smoking material is usually in the form of an experimental cigarette cartridge. When in use, the cigarette cartridge is placed in the heating chamber 110, and the smoking material in the cigarette cartridge emits smoke after being heated. After the user inhales, the smoke emitted by the cigarette cartridge enters the user's mouth under the push of air for the user to use. Among them, the cigarette cartridge includes a mouthpiece and a smoking material portion connected to the mouthpiece. When in use, the smoking material of the cigarette cartridge is completely inserted into the heating chamber 110, and the mouthpiece is ensured to be exposed outside the main body 100 of the smoking device, so that the user can inhale it.

[0038] Specifically, the heating form of the heating chamber 110 is to set a heating element 300 in the heating chamber 110. The heating element 300 is usually in a rod shape, a cylinder shape, etc. An induction coil 200 is set outside the heating element 300. Usually, for the safety of the user, the induction coil 200 is set inside the smoking device body 100 and cannot be directly viewed by the user. The induction coil 200 is used to generate an alternating magnetic field so that the heating element 300 generates a thermal eddy current effect to heat the tobacco material inserted into the heating chamber 110.

[0039] Furthermore, in order to improve the measurement accuracy of the heating temperature during the process from the beginning of heating to the rated temperature of the heating element 300, the induction coil 200 includes a first coil 210 and a second coil 220 connected in parallel, the first coil 210 is close to the inlet 120, the second coil 220 is close to the bottom wall of the heating chamber 110, and there is a first distance between the first coil 210 and the second coil 220.

[0040] It is understandable that in the scenario of an induction coil 200, the temperature of the heating element 300 is the highest at the corresponding position in the middle of the induction coil 200. However, in the embodiment of the rod shape or the combination of the rod shape and other shapes, the sensing point 400 of the temperature measurement module cannot be set at the highest temperature of the heating element 300 due to the need to insert a cigarette cartridge. Based on this, the sensing point 400 of the temperature measurement module is set outside the induction coil 200 in the prior art. However, the sensing point 400 is set outside the induction coil 200, and heat loss will be generated during heat conduction, which will lead to inaccurate measured temperature. Therefore, the present invention sets two parallel induction coils 200, one coil is close to the inlet 120, and the other coil is close to the bottom wall, and there is a gap between the two induction coils 200, and the sensing point 400 of the temperature measurement module is set at the heating element 300 corresponding to the gap, and the heat of the other coil is supplemented to improve the accuracy of the temperature of the measuring point. After the temperature measurement module obtains accurate temperature data, it is transmitted back to the control mainboard. This helps the control mainboard to accurately control the output power and the current of the induction coil 200 without consuming energy. In addition, it helps to improve the accuracy of the real-time heating temperature to meet the user's tobacco smoke requirements. Or, it helps the control mainboard to determine that the system function is operating normally, or, after the user smokes, the control mainboard takes appropriate compensatory heating measures to increase the temperature, thereby improving the user experience.

[0041] The present invention designs the induction coils 200 in a hierarchical manner and utilizes two groups of bipolar induction coils 200 to perform induction heating on the heating element 300, thereby increasing the heat conduction power of the heating element 300, and setting the sensing point 400 of the temperature measurement module on the heating element 300 and between the first coil 210 and the second coil 220, thereby accurately measuring the temperature on the heating element 300. Compared with the technical solution of the prior art in which the sensing point 400 is set outside the induction coil 200, the technical solution provided by the present invention measures the temperature more accurately.

[0042] In a preferred embodiment, in order to shorten the time from the start of the electronic cigarette to the smoke output, thereby improving the user experience, the heating element 300 includes a heating rod 310 and a heating barrel 320, and there is a second distance between the bottom surface of the heating barrel 320 and the bottom wall of the heating chamber 110, and a receiving chamber 322 with an opening 321 is formed in the heating barrel 320, and the heating rod 310 passes through the heating barrel 320 from the opening 321; and the opening 321 is arranged corresponding to the inlet 120, so that the cigarette cartridge is inserted into the receiving chamber 322 from one side of the opening 321, so that the heating barrel 320 is added to increase the heating speed, and at the same time, the heating barrel 320 can also receive the debris generated by the cigarette cartridge during the heating process, further improving the cleanliness of the inside of the heating chamber 110. At this time, the sensing point 400 can also be set on the outer wall of the heating barrel 320 or the heating rod 310, and accurate temperature can also be obtained.

[0043] On the basis of the previous embodiment, in order to facilitate wiring, the bottom surface of the heating barrel 320 is located within the first spacing, and the sensing point 400 is arranged on the bottom surface of the heating barrel 320; or, the sensing point 400 is arranged below the bottom surface of the heating barrel 320.

[0044] On the basis of the previous embodiment, in order to increase the service life of the heating barrel 320 and improve the high temperature resistance of the bottom of the heating barrel 320, a heat-resistant layer 323 is specifically provided at the bottom of the heating barrel 320. Most metal materials can be used, and another non-metallic material PEEK can also be used.

[0045] It should be noted that PEEK is polyetheretherketone (PEEK) resin, which is a special engineering plastic with excellent performance. Compared with other special engineering plastics, it has many significant advantages, such as high temperature resistance, excellent mechanical properties, good self-lubrication, chemical corrosion resistance, flame retardancy, peeling resistance, radiation resistance, stable insulation, hydrolysis resistance and easy processing. It is used in aerospace, automobile manufacturing, electronics and electrical, medical and food processing.

[0046] In a preferred embodiment, the heating rod 310 is cylindrical, the heating barrel 320 is cylindrical, and the heating rod 310 and the heating barrel 320 are coaxially arranged. The coaxial arrangement can improve the efficiency of smoking utensil processing.

[0047] In another embodiment, considering that the cigarette cartridge is inserted into the accommodating cavity 322 of the heating barrel 320, and the heating rod 310 passes through the accommodating cavity 322, the diameter of the heating rod 310 cannot be too large. Specifically, the radius of the heating barrel 320 is R, and the radius of the heating rod 310 is 0.3R~0.6R.

[0048] In another embodiment, considering that as the smoking device is used for a longer time, there will be ash residue on the heating element 300, which will affect the quality of the electronic cigarette. Therefore, the heating element 300 is detachably connected to the smoking device, specifically, a control switch is set and a slot is set in the heating chamber 110, the heating element 300 can be directly inserted into the slot, the slot can directly fix the heating element 300, and when it needs to be removed, the heating element 300 is withdrawn from the slot through the control switch, so that the user can remove the heating element 300 for easy cleaning.

[0049] In one embodiment, the heating element 300 is made of iron, and the induction coil 200 is made of copper.

[0050] It should be noted that the material of the heating element 300 is iron. The material of the heating element 300 must be a material that can generate eddy current heating. The materials that can generate eddy current heating specifically include iron, cobalt, nickel, or alloys containing these elements, or materials formed by sintering or pressing these metal particles. However, cobalt and nickel are relatively scarce. First, their prices are relatively high compared to iron; second, when cobalt and nickel are heated to a certain temperature, toxic substances will be produced. Therefore, iron is selected as the material of the heating element 300.

[0051] In another preferred embodiment, the heating element is hollow, and an opening is provided at the bottom end of the heating element 3, and the sensing point is provided inside the heating element through the opening.

[0052] The present invention also provides a smoking device, which includes a power supply device and an electronic smoking device. The specific structure of the electronic smoking device refers to the above embodiment. Since the smoking device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The power supply device provides alternating current to the induction coil in the electronic smoking device.

[0053] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An electronic smoking device, characterized in that: include: A smoking device body, wherein a heating cavity is formed in the smoking device body, and an inlet for inserting smoking materials into the heating cavity is also provided on the smoking device body; A heating element is disposed in the heating chamber; an induction coil, arranged in the smoking device body, for generating an alternating magnetic field so as to cause the heating element to generate a thermal eddy current effect to heat the smoking material inserted into the heating chamber; A control main board, which is arranged in the smoking device body and is electrically connected to the induction coil; A temperature measuring module is arranged on the smoking device body and is electrically connected to the control main board; the temperature measuring module contacts the heating element to form a sensing point; The induction coil includes a first coil and a second coil connected in parallel, the first coil is close to the entrance, the second coil is close to the bottom wall of the heating chamber, and there is a first distance between the first coil and the second coil; the sensing point is set within the first distance.

2. The electronic smoking device according to claim 1, characterized in that: The heating element includes a heating rod and a heating barrel. There is a second distance between the bottom surface of the heating barrel and the bottom wall of the heating cavity. A accommodating cavity with an opening is formed in the heating barrel. The heating rod passes through the heating barrel from the opening. The opening is arranged corresponding to the inlet so that the cigarette cartridge can be inserted into the accommodating cavity from one side of the opening.

3. The electronic smoking device according to claim 2, characterized in that: The bottom surface of the heating barrel is located within the first interval, and the sensing point is arranged on the bottom surface of the heating barrel; or, the sensing point is arranged below the bottom surface of the heating barrel.

4. The electronic smoking device according to claim 3, characterized in that: The bottom of the heating barrel is provided with a heat-resistant layer.

5. The electronic smoking device according to claim 4, characterized in that: The material of the heat-resistant layer is PEEK.

6. The electronic smoking device according to claim 5, characterized in that: The heating rod is arranged in a cylindrical shape, the heating barrel is arranged in a cylindrical shape, and the heating rod and the heating barrel are arranged coaxially.

7. The electronic smoking device according to claim 6, characterized in that: The radius of the heating barrel is R, and the radius of the heating rod is 0.3R to 0.6R.

8. The electronic smoking device according to claim 7, characterized in that: The heating element is detachably connected to the smoking device body.

9. The electronic smoking device according to any one of claims 1 to 8, characterized in that: The material of the heating element is iron, and the material of the induction coil is copper.

10. A smoking utensil, characterized in that: The electronic smoking device comprises a power supply device and the electronic smoking device according to any one of claims 1 to 9, wherein the power supply device provides an alternating current for an induction coil in the electronic smoking device.

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