Temperature control system of E-cigarette

• US 10,278,429 B2
• Filed: 04/19/2018
• Issued: 05/07/2019
• Est. Priority Date: 11/06/2015
• Status: Active Grant

• Current Assignee: Kennede Electronics Manufacturing Company Limited
• Original Assignee: O-Net Automation Technology (Shenzhen) Limited
• Inventors: Gao, Jianjie, Zhou, Yongquan, Zhou, Bo, Shen, Fei
• Primary Examiner(s): Paschall, Mark H
• Application Number:
  US15/957,891
• Publication Number:
  US 20180235282A1
• Time in Patent Office: 383 Days
• Field of Search: 219494, 219497, 219505, 219492, 219507, 219483-486
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/53 Monitoring, e.g. fault detection
• CPC Class Codes: H05B 1/0227 Applications
• CPC Class Codes: H05B 1/0297 Heating of fluids for non specified applications

Abstract

The present invention relates to an temperature control system of an e-cigarette, which includes a power supply, a liquid guiding member, and a heating element, and further includes an operating voltage input unit separately connected to the power supply and the heating element, a temperature detection unit including a voltage detection module and a temperature processing module that are connected to each other, and an operating voltage adjusting unit separately connected to the temperature processing module and the heating element. According to the present invention, a temperature of the heating element is controlled by using the temperature control system. This avoids the following problems: When the e-cigarette operates, because the temperature of the heating element increases with a longer operating time, the liquid guiding member is burnt or e-liquid molecules are cracked to produce a burnt taste, thereby affecting human health as well as smoke taste and user experience.

Claims

1. A temperature control system of an e-cigarette, comprising a power supply and a heating element,

a control processor;

an operating voltage input unit, wherein the operating voltage input unit is separately connected to the control processor, the power supply and the heating element, and the operating voltage input unit converts original voltage input by the power supply into first operating voltage for the heating element and supplies power to the heating element under control of the control processor;

a temperature detection unit, wherein the temperature detection unit comprises a voltage detection module and a temperature processing module that are connected to each other, the voltage detection module is connected to the heating element, the voltage detection module detects and sends voltage information of the heating element to the temperature processing module, and the temperature processing module converts the voltage information into a heating temperature; and

an operating voltage adjusting unit, wherein the operating voltage adjusting unit is separately connected to the control processor, the power supply, the temperature processing module and the heating element, and the operating voltage adjusting unit converts the original voltage input by the power supply into second operating voltage for the heating element, and selectively supplies power to the heating element according to the heating temperature under control of the control processor,

the temperature processing module comprises a temperature threshold, the temperature processing module compares a converted-to heating temperature with the temperature threshold to obtain a comparison result, and the control processor selectively controls the operating voltage input unit and the operating voltage adjusting unit to supply power to the heating element according to the comparison result.

2. The temperature control system according to claim 1, wherein the voltage detection module comprises a signal amplification circuit, and the signal amplification circuit is separately connected to the temperature processing module and the heating element.

3. The temperature control system according to claim 1, wherein the operating voltage adjusting unit further comprises a voltage output module and a voltage adjusting module, the voltage output module is connected to the heating element, the voltage adjusting module is connected to the voltage output module, and the voltage adjusting module is configured to adjust a voltage value of the voltage output module.

4. The temperature control system according to claim 3, wherein the voltage adjusting module is a PWM module.

5. The temperature control system according to claim 1, further comprising a power supply voltage detection unit, wherein the power supply voltage detection unit is disposed between the power supply and the operating voltage input unit;

and the power supply voltage detection unit comprises a voltage threshold and detects voltage of the power supply, when the voltage threshold is greater than the voltage of the power supply, the power supply voltage detection unit outputs the voltage of the power supply;

otherwise, the power supply voltage detection unit outputs the voltage threshold.

6. The temperature control system according to claim 1, further comprising a temperature control switch, wherein the temperature control switch is connected to the power supply, and the temperature control switch is configured to control ON or OFF of the temperature control system.

7. The temperature control system according to claim 6, further comprising an airflow control unit connected to the temperature control switch, wherein the airflow control unit is configured to identify and determine whether there is an air flow, and control ON or OFF of the temperature control switch.

8. The temperature control system according to claim 1, further comprising a reset module connected to the control processor.

9. The temperature control system according to claim 1, wherein the temperature processing module is integrated in the control processor.

10. The temperature control system according to claim 1, further comprising a charging detection unit separately connected to the control processor and the power supply;

wherein the charging detection unit analyzes and determines whether an input voltage is a charging voltage and then makes a corresponding instruction.

11. The temperature control system according to claim 1, wherein when T1>

T0, the operating voltage adjusting unit is turned off, and the heating element is powered only by the operating voltage input unit, where T1 is the converted-to heating temperature, and T0 is the temperature threshold;

when T1<

T0, the operating voltage input unit is turned off, and the operating voltage adjusting unit is turned on and outputs voltage to the heating element.