Electronic cigarette, atomizer and control method thereof (shenzhen first union technology ltd) electricity games

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How to use an electronic cigarette correctly is a difficult problem for ordinary consumers. When the electronic cigarette is used under an excessive power, the atomizing quantity would be excessive, which is not only harmful to human, but also easy to damage an atomizer of the electronic cigarette. While the electronic cigarette is used under a too small power, it would not satisfy users’ requirement.

At present, a temperature control electronic cigarette could realize the purpose of healthy smoking by controlling the temperature of the heating body in the electronic cigarette. However, the temperature control electronic cigarette has disadvantages of having a complex temperature control system, needing certain requirements for the heating body, and having low temperature control precision.

For a thorough understanding of the present disclosure, numerous specific details are set forth in the following description for purposes of illustration but not of limitation, such as particularities of system structures, interfaces, techniques, et cetera. However, it should be appreciated by those of skill in the art that, in absence of these specific details, the present disclosure may also be carried out through other implementations. In other instances, a detailed description of well-known devices, circuits, and methods is omitted, so as to avoid unnecessary details from hindering the description of the disclosure.

Referring to FIGS. 1 and 2, FIG. 1 is a schematic diagram of an atomizer according to an exemplary embodiment of the present disclosure. FIG. 2 is a module diagram of the atomizer in FIG. 1. In this embodiment, the atomizer may include a housing 11, an atomizing unit 12, a detecting unit 13 and a control unit 14.

The detecting unit 13 may be arranged in the gas passage 15 and configured to detect a gas flow quantity in the gas passage 15. The detecting unit 13 may be arranged in any position in the gas passage 15, for example, the detecting unit 13 may be fixed on an inner wall of the gas passage 15 defined by the housing 11. In other embodiments, the detecting unit 13 may be arranged in the gas passage 15 in other manners.

In this embodiment, the detecting unit 13 may be a rate detecting unit configured to detect a gas flow rate in the gas passage 15 and calculate the gas flow quantity according to the gas flow rate. For instance, in an embodiment, the gas flow quantity Q could be calculated according to a cross section area S of a position of the gas passage 15 at which the detecting unit 13 is located, the fluid Bernoulli equation and the detected gas flow rate v. For example, in an ideal modeling, Q=v×S. The cross section area S of a position of the gas passage 15 at which the detecting unit 13 is located may be a pre-measured parameter.

In other embodiments, the detecting unit 13 may be a gas pressure detecting unit configured to detect a gas pressure in the gas passage 15 and calculate the gas flow quantity according to the gas pressure. Particularly, the gas flow quantity could be calculated according to gas pressure, and parameters of the position of the gas passage 15 at which the detecting unit 13 is located. For example, the gas flow quantity Q may be calculated according to gas density r, the cross section area S of the position of the gas passage 15 at which the detecting unit 13 is located, the gas pressure P of the position at which the detecting unit 13 is located and the fluid Bernoulli equation. For example, in an ideal modeling, Q=S2×√{square root over (2P/r)}. The cross section area S of the position of the gas passage 15 at which the detecting unit 13 is located may be a pre measured parameter. The gas density r may be a known parameter.

Specifically, the atomizer may further include a storage unit 17 configured to store a preset mapping table between the gas flow quantity and the atomizing quantity. The control unit 14 may be electrically connected to the storage unit 17 and configured to find a corresponding atomizing quantity in the preset mapping table according to the gas flow quantity detected by the detecting unit 13 and adjust the atomizing quantity of the atomizer to the corresponding atomizing quantity.

In other embodiments, the atomizer may not include the storage unit 17. The control unit 14 may calculate a target atomizing quantity according to the detected gas flow quantity and adjust the atomizing quantity of the atomizer to the target atomizing quantity.

In other embodiments, the control unit 14 may calibrate the target atomizing quantity according to the corresponding atomizing quantity to obtain a calibrated atomizing quantity and adjust the atomizing quantity of the atomizer to the calibrated atomizing quantity.

Specifically, the atomizing unit 12 may include an atomizing core 121 and a power supply 122 supplying power to the atomizing core 121. The control unit 14 may be electrically connected to the power supply 122 and adjust the atomizing quantity of the atomizing unit 12 via adjusting an output power of the power supply 122, so as to realize the purpose of adjusting the atomizing quantity of the atomizer.

In the first case, the control unit 14 may calculate a target output power of the power supply 122 according to the detected gas flow quantity, and then adjust the output power of the power supply 122 to the target output power of the power supply 122 so as to adjust the atomizing quantity of the atomizer.