An electronic cigarette circuit for preventing backflow and dry burning, and an electronic cigarette.

Abstract

This utility model discloses an electronic cigarette circuit and electronic cigarette with anti-dry burning protection. The circuit includes a gyroscope, an MCU chip, a switching circuit, and an atomizer connected in sequence. When the tilt angle of the electronic cigarette relative to the horizontal plane is greater than or equal to A, the gyroscope sends a first signal to the MCU chip. The MCU chip controls the switching circuit to close according to the first signal. When the switching circuit is closed, the atomizer stops working. Through the above design, when the electronic cigarette is tilted upside down to a certain angle, the atomizer is controlled to close, thereby avoiding the risk of the atomizer burning due to dry burning, preventing impact on the flavor of the electronic cigarette, and improving the safety of electronic cigarette use.

Description

Technical Field

[0001] This utility model relates to an electronic cigarette circuit and an electronic cigarette that prevents backflow and dry burning, belonging to the field of electronic cigarette technology. Background Technology

[0002] Electronic cigarettes are electronic products that mimic traditional cigarettes. They typically have an atomizer. In existing atomizers, the heating coil inlet is usually located at the bottom of the device. When the device is upside down, the e-liquid cannot be guided to the heating coil, causing it to burn. This results in some consumers lying down while smoking electronic cigarettes for extended periods, causing the heating coil to burn and affecting the taste. Utility Model Content

[0003] In view of this, the present invention provides an electronic cigarette circuit and an electronic cigarette that prevents backflow and dry burning.

[0004] In a first aspect, this utility model embodiment provides an electronic cigarette circuit for preventing backdraft and dry burning, comprising: a gyroscope, an MCU chip, a switching circuit, and an atomizer connected in sequence;

[0005] When the tilt angle of the electronic cigarette relative to the horizontal plane is greater than or equal to A, the gyroscope sends a first signal to the MCU chip;

[0006] The MCU chip controls the switching circuit to turn off according to the first signal;

[0007] When the switching circuit is closed, the atomizer stops working.

[0008] In a preferred embodiment of this utility model, when the tilt angle of the electronic cigarette relative to the horizontal plane is less than A, the gyroscope sends a second signal to the MCU chip;

[0009] The MCU chip controls the switch circuit to turn on according to the second signal;

[0010] When the switching circuit is turned on, the atomizer operates normally.

[0011] In a preferred embodiment of this utility model, the gyroscope is connected to the third pin of the MCU chip via an I2C / SPI pin.

[0012] In a preferred embodiment of this utility model, the fifth pin of the MCU chip is connected to the switching circuit;

[0013] After receiving the first signal, the MCU chip outputs a high level through the fifth pin to control the switching circuit to turn off.

[0014] In a preferred embodiment of this utility model, after receiving the second signal, the MCU chip outputs a low level through the fifth pin to control the switching circuit to open.

[0015] In a preferred embodiment of this utility model, the switching circuit includes: a voltage divider circuit and a MOSFET Q1.

[0016] In a preferred embodiment of the present invention, the voltage divider circuit includes resistors R3, R2, and R5.

[0017] The fifth pin of the MCU chip, resistors R3, R2, and R5, and one end of the atomizer are connected in series.

[0018] In a preferred embodiment of this utility model, the MOS transistor Q1 is a PMOS transistor;

[0019] The drain of the MOS transistor Q1 is connected between the resistor R5 and one end of the atomizer;

[0020] The source (S) terminal of the MOSFET Q1 is connected between resistors R2 and R5.

[0021] The gate (G) of the MOSFET Q1 is connected between resistors R3 and R2.

[0022] In a preferred embodiment of this utility model, the other end of the atomizer is grounded.

[0023] Secondly, the present invention also provides an electronic cigarette, which includes an anti-dry-burning electronic cigarette circuit as described in any embodiment of the present invention.

[0024] This utility model has the following advantages over the prior art:

[0025] This embodiment of the invention, through the above-described settings, enables the atomizer to be shut off when the electronic cigarette is tilted upside down at a certain angle, thereby avoiding the risk of the atomizer burning due to dry burning, preventing any impact on the taste of the electronic cigarette, and improving the safety of using the electronic cigarette. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of the circuit module of the anti-dry burning electronic cigarette circuit according to an embodiment of the present utility model;

[0028] Figure 2 This is a circuit diagram of the electronic cigarette circuit for preventing backflow and dry burning, according to an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0030] Example:

[0031] Firstly, reference Figure 1 The present invention provides an electronic cigarette circuit for preventing backdraft and dry burning, characterized in that it includes: a gyroscope 10, an MCU chip 20, a switching circuit 30 and an atomizer 40 connected in sequence.

[0032] When the tilt angle of the electronic cigarette relative to the horizontal plane is greater than or equal to A, the gyroscope 10 sends a first signal to the MCU chip 20;

[0033] The MCU chip 20 controls the switching circuit 30 to turn off according to the first signal;

[0034] When the switching circuit 30 is closed, the atomizer 40 stops working.

[0035] This embodiment of the invention, through the above-described settings, enables the atomizer to be shut off when the electronic cigarette is tilted upside down at a certain angle, thereby avoiding the risk of the atomizer burning due to dry burning, preventing any impact on the taste of the electronic cigarette, and improving the safety of using the electronic cigarette.

[0036] In this embodiment of the invention, the tilt angle of the electronic cigarette relative to the horizontal plane is greater than or equal to A. This can be understood as follows: when the cigarette holder is horizontal, the tilt angle is 0°. Taking the mouthpiece of the electronic cigarette as the center of rotation, the rotation angle of the electronic cigarette holder relative to the horizontal plane is positive when it is above the horizontal plane, and negative when it is below the horizontal plane. That is, the tilt angle below the horizontal plane will be less than 0° (negative value), and the tilt angle above the horizontal plane will be greater than 0° (positive value). In this embodiment of the invention, A is preferably 45°.

[0037] Furthermore, the electronic cigarette in this embodiment may also include an alarm device, such as an LED light or a buzzer. When the MCU chip receives the first signal, the MCU chip may also send an alarm signal to the alarm device to alert the user.

[0038] As a preferred embodiment of this utility model, refer to Figure 1 When the tilt angle of the electronic cigarette relative to the horizontal plane is less than A, the gyroscope 10 sends a second signal to the MCU chip 20;

[0039] The MCU chip 20 controls the switch circuit 30 to turn on according to the second signal;

[0040] When the switching circuit 30 is turned on, the atomizer 40 operates normally.

[0041] As a preferred embodiment of this utility model, refer to Figure 2 The gyroscope U1 is connected to the third pin of the MCU chip U2 via an I2C / SPI pin. This third pin is an I / O port used for communication with the gyroscope U1.

[0042] In a preferred embodiment of this utility model, the fifth pin of the MCU chip U2 is connected to the switching circuit;

[0043] After receiving the first signal, the MCU chip U2 outputs a high level through the fifth pin to control the switching circuit to turn off.

[0044] The fifth pin is an I / O port pin used to control the switching of a MOSFET, preferably an I / O port pin with PWM output function.

[0045] In a preferred embodiment of this utility model, after receiving the second signal, the MCU chip outputs a low level through the fifth pin to control the switching circuit to open.

[0046] As a preferred embodiment of this utility model, refer to Figure 2 The switching circuit includes a voltage divider circuit and a MOSFET Q1.

[0047] As a preferred embodiment of this utility model, refer to Figure 2 The voltage divider circuit includes resistors R3, R2, and R5;

[0048] The fifth pin of the MCU chip, resistors R3, R2, and R5, and one end of the atomizer L1 are connected in series.

[0049] The resistor R3 has a resistance of 100 ohms; the resistor R2 has a resistance of 10K ohms; and the resistor R5 has a resistance of 1M ohms.

[0050] As a preferred embodiment of this utility model, refer to Figure 2 The MOS transistor Q1 is a PMOS transistor;

[0051] The drain of the MOS transistor Q1 is connected between the resistor R5 and one end of the atomizer L1.

[0052] The source (S) terminal of the MOSFET Q1 is connected between resistors R2 and R5.

[0053] The gate (G) of the MOSFET Q1 is connected between resistors R3 and R2.

[0054] Preferably, the source (S) terminal of the MOSFET Q1 is also connected to the positive input interface BAT+ of the battery.

[0055] As a preferred embodiment of this utility model, refer to Figure 2 The other end of the atomizer L1 is grounded.

[0056] Secondly, the present invention also provides an electronic cigarette, which includes an anti-dry-burning electronic cigarette circuit as described in any embodiment of the present invention.

[0057] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. An electronic cigarette circuit for preventing a dry burn and a back-draw, characterized in that, include: The gyroscope, MCU chip, switching circuit, and atomizer are connected in sequence. When the tilt angle of the electronic cigarette relative to the horizontal plane is greater than or equal to A, the gyroscope sends a first signal to the MCU chip; The MCU chip controls the switching circuit to turn off according to the first signal; When the switching circuit is closed, the atomizer stops working.

2. The anti-puff-back and dry-burn electronic cigarette circuit of claim 1, wherein, When the tilt angle of the electronic cigarette relative to the horizontal plane is less than A, the gyroscope sends a second signal to the MCU chip; The MCU chip controls the switch circuit to turn on according to the second signal; When the switching circuit is turned on, the atomizer operates normally.

3. The anti-puff-back and dry-burn electronic cigarette circuit of claim 2, wherein, The gyroscope is connected to the third pin of the MCU chip via an I2C / SPI pin.

4. The anti-puff-back and dry-burn prevention electronic cigarette circuit of claim 3, wherein, The fifth pin of the MCU chip is connected to the switching circuit; After receiving the first signal, the MCU chip outputs a high level through the fifth pin to control the switching circuit to turn off.

5. The anti-puff-back and dry-burn electronic cigarette circuit of claim 4, wherein, After receiving the second signal, the MCU chip outputs a low level through the fifth pin to control the switching circuit to turn on.

6. The anti-puff-back and dry-burn prevention electronic cigarette circuit of claim 5, wherein, The switching circuit includes a voltage divider circuit and a MOSFET Q1.

7. The electronic cigarette circuit for preventing reverse puffing and dry boiling according to claim 6, wherein The voltage divider circuit includes resistors R3, R2, and R5; The fifth pin of the MCU chip, resistors R3, R2, and R5, and one end of the atomizer are connected in series.

8. The anti-puff-back and dry-burn prevention electronic cigarette circuit of claim 7, wherein, The MOS transistor Q1 is a PMOS transistor; The drain of the MOS transistor Q1 is connected between the resistor R5 and one end of the atomizer; The source (S) terminal of the MOSFET Q1 is connected between resistors R2 and R5. The gate (G) of the MOSFET Q1 is connected between resistors R3 and R2.

9. The anti-puff-back and dry-burn electronic cigarette circuit of claim 8, wherein, The other end of the atomizer is grounded.

10. An electronic cigarette, characterized in that, The electronic cigarette includes the anti-dry-burning electronic cigarette circuit as described in any one of claims 1-9.

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