WO2020224540A1

WO2020224540A1 - Magnetic sensor-based electronic cigarette

Info

Publication number: WO2020224540A1
Application number: PCT/CN2020/088311
Authority: WO
Inventors: 郭海平; 杨凯; 李昊晨; 沈卫锋; 薛松生
Original assignee: 江苏多维科技有限公司
Priority date: 2019-05-06
Filing date: 2020-04-30
Publication date: 2020-11-12
Also published as: CN210017901U

Abstract

A magnetic sensor-based electronic cigarette, comprising a movable magnet (1), a stationary magnet (2), a magnetic sensor (3), and an electronic cigarette body (7); the electronic cigarette body (7) comprises a mouthpiece (8) and a cigarette channel (100) in communication with the mouthpiece (8); the movable magnet (1) is slidably provided in the cigarette channel (100); both the stationary magnet (2) and the magnetic sensor (3) are mounted on the electronic cigarette body (7); a limiting member is provided between the stationary magnet (2) and the movable magnet (1) and is used for limiting a gap between the movable magnet (1) and the stationary magnet (2); the magnetic sensor (3) is used for measuring the magnetic field strength of the movable magnet (1); when detecting that the magnetic field strength of the movable magnet (1) reaches a set value, the magnetic sensor (3) triggers a circuit between a heating wire and a battery to be conducted. The present invention solves the problem in existing electronic cigarettes that the contamination, by e-liquid, of a pressure-sensitive element of a pressure sensor affects normal operation of the electronic cigarettes.

Description

Electronic cigarette based on magnetic sensor

Technical field

The present disclosure relates to the technical field of analog cigarettes, and in particular to an electronic cigarette based on a magnetic sensor.

Background technique

An electronic cigarette is a product for users to smoke after turning nicotine into steam through means such as atomization. It has the same appearance, smoke, taste and feel as cigarettes.

In the prior art, the principle of an electronic cigarette is: through the circuit between the battery and the heating wire, the battery supplies power to the heating wire, so that the heating wire can heat the e-liquid in the cartridge to generate smoke. The smoke effect of traditional tobacco burning. At present, there are two ways to connect between the conducting battery and the heating wire, one is to use the button, and the other is to use the pressure sensor embedded in the flue.

When the button is used to control the on and off of the heating wire and the battery, the wrong touch of the button is easy to occur, which causes a waste of smoke; the method of using the pressure sensor in the flue to solve the problem of easy touch by the button . The principle is that when the smoker inhales, the pressure sensor detects the change in the air pressure inside the flue, and then through the control logic, the heating wire is connected to the battery. However, once the e-liquid enters the flue and contaminates the pressure sensitive element of the pressure sensor, it will affect the normal operation of the pressure sensor and affect the normal ignition of the electronic cigarette.

Summary of the invention

The purpose of this disclosure is to provide an electronic cigarette based on a magnetic sensor to improve the prior art when the pressure sensor is embedded in the flue to control the on and off of the heating wire and the battery, the smoke oil is contaminated with the pressure sensitive element of the pressure sensor It will affect the normal ignition of electronic cigarettes.

To achieve this goal, this disclosure adopts the following technical solutions:

An electronic cigarette based on a magnetic sensor, comprising a moving magnet, a static magnet, a magnetic sensor, and an electronic cigarette body. The electronic cigarette body includes a cigarette holder and a flue communicating with the cigarette holder. The moving magnet is slidably arranged on the cigarette In the channel, the static magnet and the magnetic sensor are both installed on the electronic cigarette body; a limiting member is arranged between the static magnet and the moving magnet, and the limiting member is used to limit the moving magnet The gap with the static magnet;

The magnetic sensor is used to detect the magnetic field strength of the moving magnet; when a user inhales at the cigarette holder, the moving magnet can move away from the static magnet, and when the magnetic sensor detects the When the magnetic field strength of the moving magnet reaches the set value, the magnetic sensor can trigger the electric circuit between the heating wire and the battery to conduct; when the user stops inhaling at the cigarette holder, the moving magnet can be in the static The magnet is attracted to reset and abuts against the limiting member.

In some embodiments, the limiting member includes a plurality of limiting plates arranged at intervals in the flue, and the plurality of limiting plates collectively limit the moving magnet.

In some embodiments, the limiting member includes a limiting grid provided in the flue.

In some embodiments, the static magnet, the limiting member, and the moving magnet are sequentially arranged along the airflow direction in the flue when the user inhales.

In some embodiments, the magnetic sensor is located on the outer periphery of the moving magnet, and the moving magnet is closer to the magnetic sensor than the static magnet.

In some embodiments, the limiting member includes an isolation membrane, a side wall of the flue is provided with an installation opening for installing the isolation membrane, and the isolation membrane is provided at the installation opening; The magnet is fixed on the isolation membrane, and when the user inhales at the cigarette holder, the isolation membrane can drive the moving magnet to move inside the flue; the user stops inhaling at the cigarette holder At this time, the moving magnet can be reset under the attraction of the static magnet.

In some embodiments, the magnetic sensor and the static magnet are both located outside the isolation film, and the magnetic sensor and the static magnet are sequentially arranged in a direction away from the moving magnet.

In some embodiments, a first guide groove and a second guide groove are provided in the flue at intervals, and the first guide groove and the second guide groove work together to guide the movement of the moving magnet.

In some embodiments, the magnetic sensor is a Hall effect sensor, an anisotropic sensor, a giant magnetoresistive sensor, or a tunnel magnetoresistive sensor.

In some embodiments, at least one of the moving magnet and the static magnet is a permanent magnet.

The beneficial effects of this disclosure:

The electronic cigarette based on the magnetic sensor (hereinafter referred to as electronic cigarette for convenience of description) provided in the present disclosure includes an electronic cigarette body, which includes a cigarette holder and a flue connected to the cigarette holder. The electronic cigarette also includes a moving magnet slidably arranged in the flue, and a static magnet and a magnetic sensor installed on the body of the electronic cigarette. The magnetic sensor is used to detect the magnetic field strength of the moving magnet. When the user inhales at the cigarette holder, the moving magnet moves away from the static magnet under the action of the suction force. During the movement of the moving magnet, when the magnetic sensor detects that the magnetic field intensity of the moving magnet reaches the set value, the magnetic The sensor triggers the electrical connection between the heating wire and the battery. The entire ignition process of the electronic cigarette based on the magnetic sensor (that is, the process of triggering the electronic cigarette to produce smoke) is similar to traditional cigarettes, and the user experience is better; moreover, the magnetic sensor is a solid-state device, and the smoke oil in the flue has its magnetoelectric characteristics The impact is relatively small, so that the electronic cigarette based on the magnetic sensor provided in the present disclosure can reduce or even avoid the occurrence of ignition failures caused by the e-liquid, the ignition reliability is higher, and at the same time, it is also beneficial to prolong the service life of the electronic cigarette.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings needed in the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the content of the embodiments of the present disclosure and these drawings.

FIG. 1 is a schematic diagram of the first electronic cigarette based on a magnetic sensor of the present disclosure (part of the structure is not shown, and the direction of the arrow in the figure indicates the direction of movement of the moving magnet);

2 is a schematic diagram of the second electronic cigarette based on a magnetic sensor of the present disclosure (part of the structure is not shown, and the direction of the arrow in the figure indicates the direction of movement of the moving magnet);

3 is a schematic diagram of a third type of electronic cigarette based on a magnetic sensor of the present disclosure (part of the structure is not shown, and the direction of the arrow in the figure indicates the direction of movement of the moving magnet);

4 is a schematic diagram of the fourth electronic cigarette based on a magnetic sensor of the present disclosure (part of the structure is not shown, and the direction of the arrow in the figure indicates the direction of movement of the moving magnet);

Figure 5 is a schematic diagram of different positions of the magnetic sensor;

6 is a schematic diagram of a fifth electronic cigarette based on a magnetic sensor of the present disclosure (part of the structure is not shown, and the direction of the arrow in the figure indicates the direction of movement of the moving magnet);

Figure 7 is the output curve diagram of the analog output magnetic sensor;

Figure 8 is the output curve diagram of the digital output magnetic sensor;

FIG. 9 is a schematic structural diagram of an electronic cigarette body according to an embodiment of the disclosure.

Detailed ways

The disclosure will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present disclosure, but not to limit the present disclosure. In addition, it should be noted that, for ease of description, the drawings only show parts related to the present disclosure instead of all the structures.

In the description of the present disclosure, unless otherwise clearly defined and defined, the terms "connected", "connected", and "fixed" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrated ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in this disclosure can be understood in specific situations.

In the description of this embodiment, the terms "upper", "lower", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplified operations, rather than indicating It may also imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first" and "second" are only used to distinguish them in description and have no special meaning.

As shown in Figures 1 to 4, 6 and 9, the magnetic sensor-based electronic cigarette provided in this embodiment includes a moving magnet 1, a static magnet 2, a magnetic sensor 3, and an electronic cigarette body 7. The electronic cigarette body 7 includes a cigarette holder 8 and the flue 100 connected with the cigarette holder 8, the moving magnet 1 is slidably arranged in the flue 100, the static magnet 2 and the magnetic sensor 3 are both installed on the electronic cigarette body 7; the limit piece is arranged between the static magnet 2 and the moving magnet 1 It is used to define the gap between the moving magnet 1 and the static magnet 2; the magnetic sensor 3 is used to detect the magnetic field strength of the moving magnet 1. When the user inhales at the cigarette holder 8, the moving magnet 1 can move away from the static magnet 2. Directional movement (static magnet 2 is downstream of the moving magnet 1 movement path when the user inhales at the cigarette holder 8), when the magnetic sensor 3 detects that the magnetic field intensity of the moving magnet 1 reaches the set value, the magnetic sensor 3 can trigger The circuit between the heating wire and the battery is turned on; when the user stops inhaling at the cigarette holder 8, the moving magnet 1 can be reset under the attraction of the static magnet 2, and abutting against the limiter, the output of the magnetic sensor 3 returns to the original Value, which in turn causes the circuit between the heating wire and the battery to be disconnected.

The electronic cigarette based on the magnetic sensor provided in this embodiment includes an electronic cigarette body 7, and the electronic cigarette body 7 includes a cigarette holder 8 and a flue 100 communicating with the cigarette holder 8. The electronic cigarette also includes a moving magnet 1 slidably arranged in the flue 100 and a static magnet 2 and a magnetic sensor 3 mounted on the body 7 of the electronic cigarette. The magnetic sensor 3 is used to detect the magnetic field strength of the moving magnet 1. When the user inhales at the cigarette holder 8, the moving magnet 1 moves away from the static magnet 2 under the action of the suction force. During the movement of the moving magnet 1, when the magnetic sensor 3 detects that the magnetic field strength of the moving magnet 1 reaches the set point When the value is set, the magnetic sensor 3 triggers the electrical connection between the heating wire and the battery. The entire ignition process of the electronic cigarette based on the magnetic sensor disclosed in the present disclosure is similar to that of a traditional cigarette, and the user experience is better; moreover, the magnetic sensor 3 is a solid-state device, and the smoke oil in the flue 100 has little effect on its magnetoelectric characteristics, making this embodiment The electronic cigarette based on the magnetic sensor provided by the example can reduce or even avoid the occurrence of ignition failure due to smoke oil contamination, the ignition reliability is higher, and at the same time, it is also beneficial to prolong the service life of the electronic cigarette.

In addition, the limiting member is disposed between the static magnet 2 and the moving magnet 1, and in the specific embodiment of the disclosure, the static magnet 2 and the moving magnet 1 are disposed directly opposite. Limiting the gap between the moving magnet 1 and the static magnet 2 can prevent the moving magnet 1 and the static magnet 2 from being attracted to each other and causing difficulty in separation, so that the magnetic sensor-based electronic cigarette provided in this embodiment has stronger ignition reliability.

In this embodiment, the electronic cigarette based on the magnetic sensor may include a housing and an electronic cigarette body 7 arranged in the housing. The electronic cigarette body 7 may include a battery and an atomizer (the heating wire is a mist) arranged in sequence along the centerline of the housing. The flue 100 mentioned in this embodiment can refer to the flue 100 connecting the atomizer and the cigarette holder 8, and the shape of the flue 100 can be cylindrical or rectangular. Regarding the electronic cigarette based on the magnetic sensor, other structures not disclosed in this embodiment can refer to the prior art.

Both the static magnet 2 and the magnetic sensor 3 are installed on the electronic cigarette body 7. Specifically, the static magnet 2 can be installed in the flue 100, or can be installed on the electronic cigarette body 7 and located outside the flue 100, as long as The static magnet 2 can reset the moving magnet 1 and keep the moving magnet 1 in the reset position without external force (the suction force generated when the user inhales at the cigarette holder 8). The magnetic sensor 3 can be installed in the flue 100, or can be installed on the electronic cigarette body 7 and located outside the flue 100, as long as it can detect the magnetic field strength of the moving magnet 1 and change according to the magnetic field strength of the moving magnet 1 Just trigger the circuit between the heating wire and the battery to conduct.

When the magnetic sensor 3 detects that the magnetic field intensity of the moving magnet 1 reaches the set value, the magnetic sensor 3 triggers the conduction of the circuit between the heating wire and the battery. Specifically, the electromagnetic switch may be in the same circuit as the heating wire and the battery. When the magnetic sensor 3 detects that the magnetic field component of the magnetic field generated by the moving magnet 1 in the sensitive direction of the magnetic sensor 3 reaches the set value, it sends a signal to the controller of the electronic cigarette. After the controller receives the signal sent by the magnetic sensor 3, it controls The electromagnetic switch is closed, so that the circuit between the heating wire and the battery is conducted.

In this embodiment, the controller can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer, or it can be composed of multiple distributed single-chip microcomputers. The single-chip microcomputer can run a control program to control the magnetic sensor. 3 and electromagnetic switch realize its function.

Optionally, in this embodiment, the ends of the static magnet 2 and the moving magnet 1 close to each other have opposite polarities, one is S pole and the other is N pole. The ends of the static magnet 2 and the moving magnet 1 close to each other have opposite polarities, so that the static magnet 2 and the moving magnet 1 always have a tendency to be close to each other, which is beneficial to the reset of the moving magnet 1 and the position maintenance of the moving magnet 1 after reset.

Optionally, at least one of the moving magnet 1 and the static magnet 2 is a permanent magnet, that is, one of the moving magnet 1 and the static magnet 2 may be a permanent magnet and the other may be a soft magnet, or both may be permanent magnets. The shapes of the moving magnet 1 and the static magnet 2 can be the same or different. Preferably, in order to make the interaction between the two better, the moving magnet 1 and the static magnet 2 have the same structure, for example: both are circular Or square.

In this embodiment, the magnetic sensor 3 may be a Hall effect sensor, an anisotropic sensor, a giant magnetoresistive sensor or a tunnel magnetoresistive sensor.

The moving magnet 1 is slidably arranged in the flue 100. The flue 100 may be provided with a first guide groove and a second guide groove at intervals. The first guide groove and the second guide groove are arranged opposite to each other, and both extend in the same direction as the moving magnet 1. The direction of movement of is parallel to guide the movement of the moving magnet 1. Specifically, the first guide groove and the second guide groove are both slidably connected to the moving magnet 1.

Further, the cross-sectional shape of the moving magnet 1 may be square, the cross-sectional shapes of the first guide groove and the second guide groove are both concave shapes matching the cross-sectional shape of the moving magnet 1, and the two concave-shaped guide grooves are in the flue 100 are arranged oppositely, and the moving magnet 1 is confined in it, so that the moving magnet 1 slides along the guide groove when the moving magnet 1 receives a force, so that the moving reliability of the moving magnet 1 is stronger.

The limiting member is used to limit the moving magnet 1 to prevent the moving magnet 1 and the static magnet 2 from being attracted together. Specifically, the limiting member may be composed of multiple limiting plates 4 arranged at intervals in the flue 100. The limit plates 4 are arranged side by side in the flue 100 to limit the position of the moving magnet 1; the limit piece can also be composed of a limit grid 5 arranged in the flue 100.

Further, when the limiting member adopts any of the above two structures, the static magnet 2, the limiting member and the moving magnet 1 can be arranged in sequence along the airflow direction in the flue 100 when the user inhales. As shown in Figure 5, the magnetic sensor 3 can be set at any effective position on the outer circumference of the moving magnet 1 (it can detect the magnetic field strength of the moving magnet 1 and trigger the electrical circuit between the heating wire and the battery according to the change in the magnetic field strength of the moving magnet 1. Pass position), for example: up, down, left or right of moving magnet 1. In order to improve the detection accuracy of the magnetic sensor 3, in this embodiment, the distance between the moving magnet 1 and the magnetic sensor 3 is smaller than the distance between the static magnet 2 and the magnetic sensor 3.

As shown in Fig. 6, as an alternative, the limiting member can also be an isolation membrane 6. A mounting opening for installing the isolation membrane 6 is provided on the side wall of the flue 100, and the isolation membrane 6 is arranged at the installation opening; The magnet 1 is fixed on the isolation film 6. When the user inhales at the cigarette holder, the isolation film 6 can drive the magnet 1 to move into the flue 100; when the user stops inhaling at the cigarette holder, the moving magnet 1 can The static magnet 2 is attracted to reset. At this time, the magnetic sensor 3 and the static magnet 2 may both be located on the outside of the isolation film 6 and arranged in order in a direction away from the moving magnet 1.

In this embodiment, the electronic cigarette based on the magnetic sensor may further include an airflow sensor (not shown in the figure), and the airflow sensor is used to detect the flow of the airflow.

FIG. 7 is a characteristic curve of the magnetic sensor 3 with analog output, the abscissa is the magnetic field intensity of the moving magnet 1 detected by the magnetic sensor 3, and the ordinate is the output voltage of the magnetic sensor 3. It can be seen from the figure that the output voltage of the magnetic sensor 3 has a linear relationship with the magnetic field intensity of the moving magnet 1 detected by the magnetic sensor 3. In application, you can set a certain output voltage value of the magnetic sensor 3, the voltage value corresponding to A or B in the figure as the threshold voltage. Once the threshold voltage is reached, it indicates that the moving magnet 1 has reached the designated position, corresponding to the smoker The inhaled airflow reaches the ignition threshold, and the magnetic sensor 3 will trigger the circuit between the heating wire and the battery to conduct the ignition action.

FIG. 8 is a characteristic curve of the magnetic sensor 3 with switching output. The abscissa is the magnetic field intensity of the moving magnet 1 detected by the magnetic sensor 3, and the ordinate is the output level of the magnetic sensor 3. It can be seen from the figure that the output of magnetic sensor 3 has only high and low levels. When the magnetic field intensity of moving magnet 1 detected by magnetic sensor 3 reaches the switch point, the output level of magnetic sensor 3 will jump between high and low levels. change. In application, the switching point magnetic field intensity C or D can be used as the magnetic field intensity corresponding to the ignition threshold. That is, when the smoker does not inhale, the magnetic field intensity of the moving magnet 1 detected by the magnetic sensor 3 is 0 or less; when the airflow generated by the inhalation reaches the ignition threshold, the magnetic field intensity of the moving magnet 1 detected by the magnetic sensor 3 is equal to The magnetic field strength of the switch point triggers the ignition action to connect the heating wire and battery.

Obviously, the above-mentioned embodiments of the present disclosure are only used to clearly illustrate the examples of the present disclosure, and are not intended to limit the implementation manners of the present disclosure. For those of ordinary skill in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of this disclosure. It is unnecessary and impossible to list all the implementation methods here. Any modification, equivalent replacement and improvement made within the spirit and principles of this disclosure shall be included in the protection scope of the claims of this disclosure.

Claims

An electronic cigarette based on a magnetic sensor, which is characterized by comprising a moving magnet, a static magnet, a magnetic sensor and an electronic cigarette body. The electronic cigarette body includes a cigarette holder and a flue communicating with the cigarette holder. The moving magnet is slidably arranged In the flue, the static magnet and the magnetic sensor are both installed on the electronic cigarette body; a limiting member is provided between the static magnet and the moving magnet, and the limiting member is used for limiting The gap between the moving magnet and the static magnet;

The magnetic sensor is used to detect the magnetic field strength of the moving magnet; when a user inhales at the cigarette holder, the moving magnet can move away from the static magnet, and when the magnetic sensor detects the When the magnetic field strength of the moving magnet reaches the set value, the magnetic sensor can trigger the electric circuit between the heating wire and the battery to conduct; when the user stops inhaling at the cigarette holder, the moving magnet can be in the static The magnet is attracted to reset and abuts against the limiting member.
The magnetic sensor-based electronic cigarette according to claim 1, wherein the limiting member comprises a plurality of limiting plates arranged at intervals in the flue, and the plurality of limiting plates are collectively the movable Magnet limit.
The electronic cigarette based on a magnetic sensor according to claim 1, wherein the limiting member comprises a limiting grid arranged in the flue.
The electronic cigarette based on a magnetic sensor according to claim 2, wherein the static magnet, the limiting member, and the moving magnet are arranged in sequence along the airflow direction in the flue when the user inhales.
The electronic cigarette based on a magnetic sensor according to claim 2, wherein the magnetic sensor is located on the outer periphery of the moving magnet, and the moving magnet is closer to the magnetic sensor than the static magnet.
The electronic cigarette based on a magnetic sensor according to claim 1, wherein the limiting member comprises an isolation film, and a side wall of the flue is provided with an installation port for installing the isolation film, and the isolation The membrane is arranged at the installation opening; the moving magnet is fixed on the isolation membrane, and when the user inhales at the cigarette holder, the isolation membrane can drive the moving magnet to the inside of the flue Movement; when the user stops inhaling at the cigarette holder, the moving magnet can be reset under the attraction of the static magnet.
The electronic cigarette based on a magnetic sensor according to claim 6, wherein the magnetic sensor and the static magnet are both located outside the isolation film, and the magnetic sensor and the static magnet are away from the The directions of the moving magnets are set in sequence.
The magnetic sensor-based electronic cigarette according to any one of claims 1-7, wherein a first guide groove and a second guide groove are provided in the flue at intervals, and the first guide groove and the second guide groove The two guiding grooves work together to guide the movement of the moving magnet.
The electronic cigarette based on a magnetic sensor according to any one of claims 1-7, wherein the magnetic sensor is a Hall effect sensor, an anisotropic sensor, a giant magnetoresistive sensor, or a tunnel magnetoresistive sensor.
The electronic cigarette based on a magnetic sensor according to any one of claims 1-7, wherein at least one of the moving magnet and the static magnet is a permanent magnet.