CN216875051U

CN216875051U - Airflow induction device, power supply device and electronic atomization device

Info

Publication number: CN216875051U
Application number: CN202122867977.1U
Authority: CN
Inventors: 周亮德; 邓泽文
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-07-05
Anticipated expiration: 2031-11-22

Abstract

The utility model relates to an airflow sensing device, a power supply device and an electronic atomization device, wherein the airflow sensing device comprises an accommodating cavity, at least one fan blade, at least one magnetic element and at least one magnetic inductor, wherein the at least one fan blade is rotatably accommodated in the accommodating cavity, the at least one magnetic element is arranged on the at least one fan blade and can synchronously rotate along with the at least one fan blade, and the at least one magnetic inductor is used for sensing the change of a magnetic field of the at least one magnetic element. The utility model realizes the detection of the airflow through the non-contact transmission of the magnetic field, the airflow does not need to pass through any electronic component, so that the condensate and the atomized liquid can not enter the electronic component, and the abnormal function and the failure of the electronic component caused by the leakage of the condensate and the atomized liquid are avoided.

Description

Airflow induction device, power supply device and electronic atomization device

Technical Field

The utility model relates to the field of atomization, in particular to an airflow sensing device, a power supply device and an electronic atomization device.

Background

Prior art electronic nebulizers typically employ an airflow sensor to detect and sense changes in the suction airflow to determine whether to activate the electronic nebulizer. At present, the airflow sensor mostly adopts a microphone, a silicon microphone, a differential pressure sensor and the like, and needs to be in direct physical contact with airflow, so that the airflow can pass through the airflow sensor, and leaked condensate and atomized liquid can also flow into the airflow sensor through an air passage and then are conducted to the whole circuit board. Due to the conductivity of the condensate and the atomized liquid, electronic components on the circuit board can be failed, and further, the function is abnormal or failed.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an improved airflow sensing device, and a power supply device and an electronic atomization device having the airflow sensing device.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an airflow induction device is constructed and used for an electronic atomization device, and comprises an accommodating cavity, at least one fan blade, at least one magnetic element and at least one magnetic inductor, wherein the at least one fan blade is rotatably accommodated in the accommodating cavity, the at least one magnetic element is arranged on the at least one fan blade and can rotate along with the at least one fan blade synchronously, and the at least one magnetic inductor is used for inducing the magnetic field change of the at least one magnetic element.

In some embodiments, when the at least one magnetic element rotates synchronously with the at least one fan blade, the at least one magnetic inductor can induce the magnetic field change of the at least one magnetic element to generate the pulse signal.

In some embodiments, the magnetic inductor is a switched hall.

In some embodiments, the magnetic inductor is a linear hall.

In some embodiments, the airflow sensing device includes at least two fan blades.

In some embodiments, the airflow sensing device further comprises an air inlet channel and an air outlet channel communicated with the accommodating cavity.

In some embodiments, when the number N of the fan blades is greater than or equal to 3, the included angle between the air inlet channel and the air outlet channel ranges from 360 degrees/N to 180 degrees.

In some embodiments, when the number N of the fan blades is 2, the included angle between the air inlet channel and the air outlet channel ranges from 90 degrees to 180 degrees.

In some embodiments, the magnetic element is embedded in the fan blade.

In some embodiments, the magnetic element is a magnet.

In some embodiments, the at least one magnetic inductor is disposed outside the receiving cavity.

In some embodiments, there are at least two of the magnetic inductors.

In some embodiments, at least two of the magnetic inductors are spaced apart along the direction of rotation of the magnetic element.

In some embodiments, the airflow sensing device further comprises an MCU, the MCU is electrically connected to the at least two magnetic inductors, and the MCU is configured to determine whether to blow or inhale by determining a sequence of signals received by the at least two magnetic inductors.

In some embodiments, the airflow sensing device further comprises a circuit board electrically connected to the at least one magnetic inductor.

In some embodiments, the at least one magnetic inductor is provided separately from the circuit board.

In some embodiments, the airflow sensing device includes a bracket assembly, and the receiving cavity is formed on the bracket assembly.

In some embodiments, the airflow sensing device further includes a rotating shaft, and the at least one fan blade is rotatably mounted in the receiving cavity via the rotating shaft.

The utility model also provides a power supply device comprising the airflow sensing device.

The utility model also provides an electronic atomization device which comprises the power supply device and an atomizer electrically connected with the power supply device.

The implementation of the utility model has at least the following beneficial effects: the airflow induction device realizes the detection of the airflow through the non-contact transmission of the magnetic field, and the airflow does not pass through any electronic component, so that the condensate and the atomized liquid can not enter the electronic component, and the abnormal function and the failure of the electronic component caused by the leakage of the condensate and the atomized liquid are avoided.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic perspective view of an airflow sensing apparatus according to some embodiments of the utility model;

FIG. 2 is a schematic cross-sectional view of the airflow sensor apparatus shown in FIG. 1;

FIG. 3 is an exploded view of the airflow sensing device of FIG. 1;

FIG. 4 is a simulated plot of the magnetic field strength received by the magnetic sensor as the magnetic element rotates;

FIG. 5 is a functional block diagram of control circuitry for an electronic atomizer in accordance with certain embodiments of the present invention;

fig. 6 is a schematic perspective view of an electronic atomizer according to some embodiments of the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings or the orientations and positional relationships that the products of the present invention will ordinarily place when in use, and are used merely for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Fig. 1 to 3 show an air flow sensing device 1 according to some embodiments of the present invention, where the air flow sensing device 1 can be applied to an electronic atomizer for sensing a change in a suction air flow to determine whether to activate the electronic atomizer for atomization. The airflow sensing apparatus 1 may include a bracket assembly 10 forming a receiving cavity 110, at least one fan blade 20 rotatably disposed in the receiving cavity 110, at least one magnetic element 30 disposed on the at least one fan blade 20 and capable of rotating synchronously with the at least one fan blade 20, at least one magnetic sensor 50 for sensing a magnetic field change of the at least one magnetic element 30, and a circuit board 60 electrically connected to the at least one magnetic sensor 50. The airflow sensing device 1 of the present invention adopts a windmill type structure design, when a user sucks, a negative pressure is formed in the accommodating cavity 110, the fan blade 20 is pushed to rotate under the action of the negative pressure, and further the magnetic element 30 is driven to rotate so as to generate a magnetic field change, and the magnetic sensor 50 senses the magnetic field change of the magnetic element 30 so as to generate a control signal.

The rack assembly 10 may be made of PC material, and may include a rack body 11 and a cover plate 12, and the receiving cavity 110 may be formed on the rack body 11. In the embodiment, the receiving cavity 110 is in a cylindrical shape with one side open, and the cover plate 12 is in a disc shape and covers the open opening of the receiving cavity 110. The bracket body 11 may further have an air inlet passage 111 and an air outlet passage 112 respectively communicated with the receiving cavity 110. The air inlet channel 111, the accommodating cavity 110 and the air outlet channel 112 are sequentially communicated to form an air flow channel for air flow circulation.

The fan blade 20 may be made of PC material, and the fan blade 20 may be a straight fan blade, or it may be a fan blade with a radian. Generally, the number of the fan blades 20 may be two or more, and the two or more fan blades 20 may be evenly spaced along the circumferential direction. Preferably, when the number N of the fan blades 20 is 2, the included angle between the air inlet channel 111 and the air outlet channel 112 may range from 90 degrees to 180 degrees. When the number N of the fan blades 20 is equal to or greater than 3, the included angle between the air inlet channel 111 and the air outlet channel 112 can be 360/N to 180 degrees.

The airflow sensing device 1 may further include a rotating shaft 40, and the at least one fan blade 20 may be rotatably disposed in the receiving cavity 110 through the rotating shaft 40. The shaft 40 may be coaxially disposed with the receiving cavity 110, and the at least one fan blade 20 may rotate around a center line of the shaft 40. In some embodiments, the rotating shaft 40 can be fixedly mounted on the bracket body 11, and the at least one fan blade 20 can be rotatably sleeved on the rotating shaft 40. In other embodiments, the rotating shaft 40 can be rotatably mounted on the bracket body 11, and the at least one fan blade 20 can be fixedly sleeved on the rotating shaft 40.

Magnetic element 30 may be a magnet, which may be embedded on blade 20. It is understood that the structure of the fan blade 20 and the magnetic element 30 is not limited to the above-mentioned manner, as long as the magnetic element 30 can be rotated by the rotation of the fan blade 20, so as to generate the magnetic field variation.

In this embodiment, both the magnetic inductor 50 and the circuit board 60 can be disposed outside the accommodating cavity 110. Electronic components such as the magnetic inductor 50 and the circuit board 60 are completely isolated from the airflow channel, the detection of the airflow completely comes from the non-contact transmission of the magnetic field, and the airflow does not pass through any electronic component, so that the condensate and the atomized liquid can not enter the electronic component, and the abnormal function and the failure of the electronic component caused by the leakage of the condensate and the atomized liquid are avoided. In some embodiments, magnetic inductor 50 may be provided separately from circuit board 60. In the present embodiment, the circuit board 60 may be mounted on the bracket body 11 by screws. The magnetic sensor 50 is disposed between the cover plate 12 and the circuit board 60, and may be mounted on the circuit board 60 or may be mounted on the cover plate 12.

Preferably, the magnetic sensor 50 can be a switch hall, and only needs to sense 0 and 1 in one period, so that the cost is saved. When a user sucks, negative pressure is formed in the accommodating cavity 110, the fan blade 20 is pushed to rotate under the action of the negative pressure, and when the magnetic element 30 embedded into the fan blade 20 is close to the magnetic inductor 50, the magnetic field intensity received by the magnetic inductor 50 is increased, so that the magnetic inductor 50 is triggered to output an effective level, and when the magnetic element 30 embedded into the fan blade 20 is far away from the magnetic inductor 50, the magnetic field intensity received by the magnetic inductor 50 is decreased, so that the magnetic inductor 50 is triggered to output an ineffective level. The pulse signal is used as the control signal to control the work of related components such as the heating element and the like, so that the reliability is higher, and the signal false triggering caused by a strong magnetic field and the like can be avoided.

Fig. 4 shows a simulation diagram of the magnetic field intensity received by the magnetic sensor 50 when the magnetic element 30 rotates, and it can be seen from the diagram that the magnetic sensor 50 can generate a pulse level by selecting a proper magnetic field threshold when the magnetic element 30 approaches the magnetic sensor 50 and reaches the magnetic field threshold of the magnetic sensor 50.

The airflow sensing device 1 further comprises an MCU, which may be integrated on the circuit board 60. The MCU is electrically connected with the at least one magnetic inductor 50, high and low pulse signals output by the magnetic inductor 50 are sent to the MCU for processing, and the MCU determines whether to start related electronic components such as a heating element and the like to work according to the high and low pulse signals. Preferably, there are at least two magnetic inductors 50, and the at least two magnetic inductors 50 may be spaced apart substantially along the rotation direction of the magnetic element 30. The at least two magnetic inductors 50 are respectively electrically connected with the MCU, and the MCU can judge whether the air blowing or the air suction is performed by judging the sequence of the signals received by the at least two magnetic inductors 50, so that the anti-blowback detection is realized.

It is understood that in other embodiments, the magnetic inductor 50 may be a linear hall. Preferably, the number of the linear Hall devices is at least two, and whether the linear Hall devices blow air or suck air can be judged by judging the sequence of signals received by the at least two linear Hall devices, so that the anti-blowback detection is realized.

Fig. 5 illustrates a functional block diagram of the control circuitry of the electronic atomizer device in accordance with some embodiments of the present invention, wherein a battery 70 is coupled to a heating element 90 for providing power to the heating element 90. The switch circuit 80 is connected between the battery 70 and the heating element 90 to form a power supply loop for controlling the on/off of the power supply loop. The MCU is respectively connected with the switch circuit 80 and the two magnetic inductors 50, and the MCU judges whether the air blowing or the air suction is performed by judging the sequence of the signals received by the two magnetic inductors 50, so that the switch circuit 80 is controlled to be switched on or switched off. When the switch circuit 80 is turned on, the power supply circuit is turned on to form a conductive path, so that the battery 70 supplies power to the heat generating element 90. When the switch circuit 80 is opened, the power supply circuit is opened, so that the battery 70 stops supplying power to the heating element 90.

Fig. 6 illustrates an electronic atomizer device according to some embodiments of the present invention, which is substantially elliptical and cylindrical in shape in this embodiment, and may include a power supply device 100 and an atomizer 200 detachably disposed above the power supply device 100 in a longitudinal direction. The atomizer 200 may include an atomizing housing 201 and a heat generating element 90 disposed in the atomizing housing 201. A liquid storage cavity for containing atomized liquid is formed in the atomizing housing 201, and the heating element 90 is communicated with the liquid storage cavity and can heat and atomize the atomized liquid after being electrified. The power supply device 100 is used for supplying power to the heating element 90 and controlling the operation of electronic components such as the heating element 90, and may include a housing 101, and a battery 70 and a gas flow induction device 1 disposed in the housing 101. It is to be understood that the electronic atomizer device is not limited to the oval column shape, but may have other shapes such as a cylindrical shape, a square column shape, a flat column shape, and the like, and the atomizer 200 and the power supply device 100 may be connected together in a non-detachable manner.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above examples only express the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The airflow induction device is used for an electronic atomization device, and is characterized in that the airflow induction device (1) comprises an accommodating cavity (110), at least one fan blade (20) which is rotatably accommodated in the accommodating cavity (110), at least one magnetic element (30) which is arranged on the at least one fan blade (20) and can synchronously rotate along with the at least one fan blade (20), and at least one magnetic inductor (50) which is used for inducing the change of the magnetic field of the at least one magnetic element (30).

2. The airflow sensing device according to claim 1, wherein said at least one magnetic sensor (50) is capable of sensing a change in a magnetic field of said at least one magnetic element (30) to generate a pulse signal when said at least one magnetic element (30) rotates synchronously with said at least one fan blade (20).

3. The airflow sensing device according to claim 2, characterized in that said magnetic inductor (50) is a switched hall.

4. The airflow sensing device according to claim 1, characterized in that the magnetic inductor (50) is a linear hall.

5. The airflow sensing device according to claim 1, characterized in that the airflow sensing device (1) comprises at least two fan blades (20).

6. The airflow sensing device according to claim 1, further comprising an inlet channel (111) and an outlet channel (112) in communication with the receiving cavity (110).

7. The airflow sensing device according to claim 6, wherein when the number N of the fan blades (20) is greater than or equal to 3, the included angle between the air inlet channel (111) and the air outlet channel (112) ranges from 360 degrees/N to 180 degrees.

8. The airflow sensing device according to claim 6, wherein when the number N of the fan blades (20) is 2, an included angle between the air inlet channel (111) and the air outlet channel (112) ranges from 90 degrees to 180 degrees.

9. The airflow sensing device according to any of claims 1-8, wherein the magnetic element (30) is embedded in the fan blade (20).

10. The airflow induction device according to any of claims 1-8, characterized in that said magnetic element (30) is a magnet.

11. The airflow sensing device according to any of the claims 1-8, characterized in that the at least one magnetic inductor (50) is arranged outside the receiving cavity (110).

12. The airflow induction device according to any of the claims 1-8, characterized in that there are at least two of said magnetic inductors (50).

13. The airflow induction device according to claim 12, characterized in that at least two of said magnetic inductors (50) are spaced apart along the direction of rotation of said magnetic element (30).

14. The airflow sensing device according to claim 12, further comprising an MCU, wherein the MCU is electrically connected to at least two of the magnetic sensors (50), and the MCU is configured to determine whether to blow or suck by determining the sequence of signals received by the at least two magnetic sensors (50).

15. The airflow sensing device according to any of claims 1-8, further comprising a circuit board (60) electrically connected to the at least one magnetic inductor (50).

16. The airflow sensing device according to claim 15, characterized in that said at least one magnetic inductor (50) is provided independently of said circuit board (60).

17. The airflow sensing device according to any one of claims 1 to 8, characterized in that the airflow sensing device comprises a bracket assembly (10), and the receiving cavity (110) is formed on the bracket assembly (10).

18. The airflow sensing device according to any one of claims 1-8, further comprising a rotating shaft (40), wherein the at least one fan blade (20) is rotatably mounted in the receiving cavity (110) via the rotating shaft (40).

19. A power supply device, characterized by comprising an air flow induction device (1) according to any one of claims 1-18.

20. An electronic atomizer device comprising the power supply device of claim 19 and an atomizer electrically connected to said power supply device.