CN215347035U

CN215347035U - Electronic atomization device

Info

Publication number: CN215347035U
Application number: CN202120244975.4U
Authority: CN
Inventors: 杨景; 徐中立; 李永海
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-12-31
Anticipated expiration: 2031-01-28

Abstract

The application discloses electron atomizing device includes: a battery, a storage unit, and a heating element; a thermistor disposed adjacent to the heating element; the heat of the heating element can be transferred to the thermistor, so that the resistance value of the thermistor is changed; the thermistor is electrically connected with the heating element and the battery to form an electric loop; a control module configured to acquire a start signal to conduct an electrical connection of the electrical circuit; the circuit is configured such that during the conduction period, the resistance value of the thermistor changes to reduce the current flowing through the heating element. The resistance value is changed due to the fact that the thermistor senses the temperature of the heating element, and the current flowing through the heating element can be reduced along with the change of the resistance value of the thermistor when a user sucks aerosol; therefore, under the condition of high suction frequency or overlong continuous power output time, the temperature of the heating element can be limited in a lower range, and the thermal protection function is realized.

Description

Electronic atomization device

Technical Field

The application relates to the technical field of smoking sets, in particular to an electronic atomization device.

Background

The electronic atomization device is an electronic product which generates smoke through heating tobacco tar and is used for a user to suck, and generally comprises an atomizer and a battery pack, wherein the tobacco tar is stored in the atomizer, the atomization core used for heating the tobacco tar is arranged in the atomizer, and the battery pack can supply power to the atomization core to enable the atomization core to generate heat and generate high temperature to heat the tobacco tar.

The problem that current electronic atomization device exists is, when the suction frequency is higher or continuous power output time is too long, the too high condition of atomizing core temperature easily appears to lead to the condition that part tobacco tar scorching carbonization, smog turn black under high temperature, reduced user's suction experience.

SUMMERY OF THE UTILITY MODEL

The main objective of the present application is to provide an electronic atomization device to solve the problem that the existing electronic atomization device has a high pumping frequency or a long duration output time.

In order to solve the problem, the present application provides an electronic atomization device, including a battery, a storage unit for storing a liquid, and a heating element for heating the liquid;

further comprising:

a thermistor disposed adjacent to the heating element; the heat of the heating element can be transferred to the thermistor, so that the resistance value of the thermistor is changed; the thermistor is electrically connected with the heating element and the battery to form an electric circuit;

a control module configured to acquire a start signal to conduct an electrical connection of the electrical circuit;

wherein the circuit is configured such that, during conduction, the resistance value of the thermistor changes such that the current flowing through the heat generating element decreases.

According to the electronic atomization device, the resistance value is changed due to the fact that the thermistor senses the temperature of the heating element, and the current flowing through the heating element when a user sucks aerosol can be reduced along with the change of the resistance value of the thermistor; therefore, under the condition of high suction frequency or overlong continuous power output time, the temperature of the heating element can be limited in a lower range, and the thermal protection function is realized.

Drawings

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings. One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a schematic view of an electronic atomizer according to an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional view of an electronic atomizer according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an atomizing assembly provided by an embodiment of the present application;

FIG. 4 is an exploded schematic view of an atomizing assembly provided in an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of an atomizing assembly provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a heat generating component provided by an embodiment of the present application;

FIG. 7 is a schematic view of a retainer provided by an embodiment of the present application;

FIG. 8 is a schematic view of another perspective of a holder provided by an embodiment of the present application;

FIG. 9 is a schematic illustration of a substrate provided in an embodiment of the present application;

FIG. 10 is a schematic diagram of a control module provided by an embodiment of the present application;

fig. 11 is a schematic circuit diagram provided in an embodiment of the present application.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. To facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, the electronic atomizer 10 includes a housing 11, a nozzle assembly 12, an atomizer assembly 13, a holder 14, a base 15, a barrier 16, a battery 17, a control module 18, a holder 19, a seal 20, and a base 21.

The housing 11 is cylindrical and hollow, the housing 11 has an upper opening end and a lower opening end, one end of the nozzle assembly 12 can be fixed to the upper opening end, and one end of the base 21 can be fixed to the lower opening end, so as to form a containing space. The nozzle assembly 12, the atomizing assembly 13, the holder 14, the base 15, the barrier 16, the battery 17, the control module 18, the fixing seat 19, the sealing member 20 and the like are disposed in the accommodating space.

As will be understood in conjunction with fig. 3-6, the atomizing assembly 13 includes a base 131, a liquid guiding member 132, a heat generating assembly 133, and a leakage preventing member 134.

The liquid guide 132 and the heat generating component 133 are both held on the base 131. Specifically, the base 131 is generally tubular and has an upper end connected to the nozzle assembly 12. The base 131 has an extension (not shown in the drawings) extending toward the inner surface of the housing 11, and the extension abuts against the inner surface of the housing 11, so that a storage unit a for storing liquid is defined between the outer surface of the base 131, the inner surface of the housing 11, and the nozzle assembly 12. The atomizing assembly 13 further includes a seal (not shown in the drawings) which is sleeved on the outer surface of the base 131 and is located below the storage unit a. The sealing member serves to seal a gap between the outer surface of the base 131 and the inner surface of the housing 11 to prevent the liquid from flowing downward.

The liquid guide member 132 and the heating element 133 are both in a tubular shape, the liquid guide member 132 is wrapped on the periphery of the heating element 133, the liquid guide member 132 and the heating element 133 are arranged in the base 131 together, the tube wall of the base 131 is provided with a plurality of liquid inlets 1311, and the heating element 133 is in fluid communication with the storage unit a through the liquid inlets 1311. As shown in fig. 6, the heat generating component 133 includes a porous substrate 1331, a heat generating element 1332, an electric wire 1333, and an electric wire 1334. The heat generating element 1332 is disposed on an inner surface of the porous substrate 1331 or embedded in the porous substrate 1331. The electric wire 1333 and the electric wire 1334 are connected to the heating element 1332, respectively, and are coupled to the battery 17.

The leakage prevention member 134 is also held on the base 131. Specifically, the leakage preventing member 134 is disposed in the base 131 below the liquid guide member 132 and the heat generating component 133. The leakage preventing member 134 has an inner tube, an outer tube, and an extension portion (not shown in the drawings) extending from an outer surface of the inner tube to an inner surface of the outer tube; the extension is recessed downwardly to form a collection chamber for collecting liquid and preventing it from flowing into the holder 14.

As will be understood in conjunction with fig. 7-9, the retaining member 14 includes a body 141, an insertion portion 142, a position-limiting portion 143, and a position-limiting portion 144.

The body 141 has a first end and a second end opposite to the first end, a part of the end surface of the first end extends towards the base 131 to form an insertion portion 142, and the diameter of the insertion portion 142 is smaller than that of the body 141, so that the other part of the end surface of the first end forms a step surface 1411. The insertion portion 142 may be inserted into the base 131, the step surface 1411 abuts on an end portion of the base 131 after the insertion, and the leakage preventing member 134 is located above the insertion portion 142, that is, the leakage preventing member 134 is provided between the heat generating element 1332 and the holder 14. Thus, by the contact of the holder 14 with the base 131, the heat of the heat generating element 1332 can be transferred to the thermistor 151 through the base 131 and the holder 14.

The base 15 is disposed between the heat generating element 1332 and the control module 18. The substrate 15 includes, but is not limited to, a circuit board, a fixing plate, and the like; preferably, a circuit board is used, and by arranging the thermistor 151 on the circuit board, on the one hand, electrical connection is facilitated, and on the other hand, it is facilitated to dispose the thermistor 151 close to the heat generating element 1332. The base 15 has a first surface on which the thermistor 151 is disposed, and a second surface opposite to the first surface. The first face is disposed toward the body 141, i.e., toward the atomizing assembly 13 or the heat generating element 1332, when the base 15 is retained at the second end of the body 141. The

position restricting portions

143 and 144 serve to restrict the movement of the base 15 to hold the base 15 at the second end. The position-limiting portion 144 extends from the second end of the body 141 toward a direction away from the body 141, and the position-limiting portion 143 is different from the position-limiting portion 144 in that it has a protruding portion extending in the axial direction. Thus, when the base 15 is retained at the second end of the body 141, the stopper portion 144 can limit the axial movement of the base 15, and the stopper portion 143 can limit the axial and longitudinal movement of the base 15.

A battery 17 is disposed below the atomizing assembly 13 for providing power to the electronic atomizer 10. In this example, the battery 17 is a non-rechargeable battery. Barrier 16 is disposed between atomization assembly 13 and battery 17, and barrier 16 may separate atomization assembly 13 from battery 17 and prevent liquid from flowing into battery 17.

The holder 19 is located below the battery 17. The fixing seat 19 is used for fixing the control module 18; a seal 20 is provided between the control module 18 and the holder 19 to seal. The control module 18 is configured to obtain an activation signal to control the heating element 1332 to heat the liquid to generate an aerosol for inhalation by the user.

In this example, the control module 18 includes an airflow sensor and a control chip, and is integrally formed by the airflow sensor and the control chip. As shown in fig. 10, the structure of the air flow sensor and the control chip being integrally formed can be shown by reference 181, and the control module 18 further has a first electrical connection terminal 182, an output terminal 183, and a second electrical connection terminal 184. The ASIC design adopted by the control chip can avoid the dead halt phenomenon of the current MCU scheme.

The base 21 has an air inlet hole 211, and an air flow can flow in through the air inlet hole 211, and when passing through the control module 18, can be sensed by an air flow sensor therein, and then control the heating element 1332 through the control chip. Referring to fig. 2, 7-9 again, after passing through the control module 18 and the battery 17, the airflow passes through the blocking member 16, the base 15, the holding member 14, and the atomizing assembly 13 in sequence, and flows out from the nozzle assembly 12 to the mouth of the user for sucking, where a is an airflow channel passing through the blocking member 16, the base 15, the holding member 14, the atomizing assembly 13, and the nozzle assembly 12. The airflow hole 1412 of the holder 14 and the airflow hole 153 of the base 15 form part of the airflow passage.

The thermistor 151, the heat generating element 1332 and the battery 17 are electrically connected to form an electrical circuit; wherein the thermistor 151 is connected in series with the heat generating element 1332. As shown in fig. 11, in this example, the first electrical connection terminal 182 of the control module 18 is electrically connected to the positive electrode of the battery 17, the output terminal 183 of the control module 18 is electrically connected to one end of the heat generating element 1332, the other end of the heat generating element 1332 is electrically connected to the second electrical connection terminal 184 of the control module 18 and one end of the thermistor 151, and the other end of the thermistor 151 is electrically connected to the negative electrode of the battery 17. Referring to fig. 2 and 7-9, the holder 14 has wire holes 1413, and the base 15 has wire holes 152 for electrical wires to pass through, thereby forming electrical connections.

The thermistor 151 is a positive temperature coefficient thermistor, and as can be seen from fig. 2, the holder 14 holding the substrate 15 is abutted against the base 131, so that the thermistor 151 is disposed close to the heating element 1332, and heat generated by heating of the heating element 1332 can be transferred to the thermistor 151, thereby changing the resistance of the thermistor 151; the transmission means may be conduction or radiation.

Further, as can be seen from the foregoing description, since the heat generating component 133 has a certain distance from the lower end of the base 131 and the holder 14 abuts against the lower end of the base 131 (or since the leakage preventer 134 is disposed between the holder 14 and the heat generating component 133), part of the base 131 and/or the leakage preventer 134 form a spacer, so that a preset distance is maintained between the thermistor 151 and the heat generating element 1332. Specifically, the thermistor 151 is spaced from the heat generating element 1332 by a distance of about 8mm to about 12mm, preferably about 10 mm. In this way, by keeping the thermistor 151 at a predetermined distance from the heat generating element 1332, the thermistor 151 can obtain appropriate heat, which causes the resistance of the thermistor 151 to change, thereby implementing a thermal protection function.

Further, in order to improve the transfer efficiency, the body 141 of the holder 14 has a through hole (shown with reference to the air flow hole 1412 in the drawing, which is in communication with the air flow hole 1412) through which heat generated by the heating of the heat generating element 1332 is transferred to the thermistor 151.

Referring to fig. 11 again, when the user sucks, after the control module 18 senses the airflow change (i.e. obtains the start signal), the B + and O + ends of the control module 18 form a path, and the current flows out from the positive electrode of the battery 17, passes through the first electrical connection end 182, the second electrical connection end 184, the heat generating element 1332 and the thermistor 151, and flows into the negative electrode of the battery 17. It should be noted that the activation signal is not limited to a change in the inspiratory flow, such as: may be a switch control signal, etc.

The zero-power room temperature resistance value of the thermistor 151 is 50-150 milliohms; alternatively, between 50 milliohms and 120 milliohms; alternatively, between 50 milliohms and 100 milliohms; alternatively, between 50 milliohms and 80 milliohms; alternatively, from 60 milliohms to 80 milliohms. When a user sucks the food normally, the resistance value of the heating element 1332 is 0.8 ohm-2 ohm. Therefore, the thermistor 151 generates a small amount of heat and has a small loss, and the heat generating element 1332 is also less affected. At this time, the heat quantity transferred to the thermistor 151 by the heat generating element 1332 and the self-heating quantity of the thermistor 151 are both small, and the thermal protection function is not triggered.

When the frequency of the sucking becomes high or the continuous power output time is too long due to an abnormal condition, the temperature of the heating element 1332 rises sharply, the heat quantity transferred to the thermistor 151 by the heating element 1332 and the self heat quantity of the thermistor 151 increase rapidly, and further the resistance value of the thermistor 151 increases along with the temperature rise of the heating element 1332, so that the overall resistance value in the electric circuit increases; after the overall resistance value is increased, the current in the circuit is decreased, that is, the current flowing through the heating element 1332 is decreased, so that the temperature of the heating element 1332 can be limited to a lower range, and a thermal protection function is realized. Or, the resistance of the thermistor 151 increases, and the voltage drop across the thermistor increases, which causes the supply voltage of the control module 18 to become low, so that the control module 18 cannot work, and further causes the current in the circuit to become small, thereby implementing the thermal protection function.

In the above examples, the thermistor 151 is a positive temperature coefficient thermistor. In other examples, the thermistor 151 may be a negative temperature coefficient thermistor, which is electrically connected to the heat generating element 1332, and the thermistor 151 is connected to the heat generating element 1332 in parallel (as can be understood with reference to fig. 11); in this example, the zero power room temperature resistance of the NTC thermistor is between 5 and 25 ohms; alternatively, from 7 ohms to 25 ohms; alternatively, from 8 ohms to 25 ohms; alternatively, between 10 ohm and 25 ohm; alternatively, between 12 and 20 ohms.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above-mentioned technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims

1. An electronic atomization device comprises a battery, a storage unit for storing liquid, and a heating element for heating the liquid;

it is characterized by also comprising:

2. The electronic atomizing device of claim 1, wherein the thermistor is a positive temperature coefficient thermistor, and the positive temperature coefficient thermistor is connected in series with the heating element; or the thermistor is a negative temperature coefficient thermistor, and the negative temperature coefficient thermistor is connected with the heating element in parallel.

3. The electronic atomization device of claim 2 wherein the control module has a first electrical connection, a second electrical connection, and an output;

the first electric connection end is electrically connected with the positive pole of the battery, the output end is electrically connected with one end of the heating element, the other end of the heating element is electrically connected with the second electric connection end and one end of the thermistor, and the other end of the thermistor is electrically connected with the negative pole of the battery.

4. The electronic atomizer according to claim 2, wherein the ptc thermistor has a zero-power room temperature resistance value of 50 milli-ohms to 150 milli-ohms; alternatively, between 50 milliohms and 120 milliohms; alternatively, between 50 milliohms and 100 milliohms; alternatively, between 50 milliohms and 80 milliohms; alternatively, from 60 milliohms to 80 milliohms.

5. The electronic atomizer device of claim 2, wherein said ntc thermistor has a zero-power room temperature resistance value of 5-25 ohms; alternatively, from 7 ohms to 25 ohms; alternatively, from 8 ohms to 25 ohms; alternatively, between 10 ohm and 25 ohm; alternatively, between 12 and 20 ohms.

6. The electronic atomizer device of any one of claims 1-5, further comprising a spacer configured to maintain a predetermined distance between said thermistor and said heater element.

7. The electronic atomizer device of any one of claims 1-5, further comprising a substrate, wherein said thermistor is disposed on said substrate.

8. The electronic atomization device of claim 7 wherein the substrate has a first face and a second face opposite the first face; the thermistor is disposed on the first surface, and the first surface is disposed toward the heating element.

9. The electronic atomizing device of claim 7, wherein the control module includes an airflow sensor and a control chip, the substrate being disposed between the heat-generating element and the control module.

10. The electronic atomization device of claim 9 wherein the base has an airflow aperture such that an airflow passes through the airflow aperture.

11. The electronic atomization device of claim 7 further comprising a holder on which the substrate is held.

12. The electronic atomization device of claim 11 wherein the holder includes a body having a first end and a second end opposite the first end;

the first end is disposed adjacent to the heating element and the substrate is retained at the second end.

13. The electronic atomizer device of claim 12, wherein said body has a through hole therein such that heat from said heat generating element can be transferred to said thermistor through said through hole.

14. The electronic atomization device of claim 12 wherein the retainer further includes a stop disposed on the second end; the limiting part is used for limiting the movement of the base body so as to keep the base body at the second end.

15. The electronic atomizing device of any one of claims 11 to 14, further comprising a base for holding the heat-generating element; the holder is in contact with the base so that heat of the heat generating element can be transferred to the thermistor through the base and the holder.

16. The electronic atomizer device of claim 15, wherein said base is cylindrical and said retainer has a first end with a stepped surface that abuts an end of said base.

17. The electronic atomizer device of claim 16, further comprising a leak preventer for preventing liquid from flowing to said retainer;

the leakage-proof piece and the heating element are both arranged in the base, and the leakage-proof piece is arranged between the heating element and the holding piece.