| 主权项 |
1. A burner device comprising:
a fuel tank including a chamber formed therein, a first connecting portion disposed on a top end thereof, and a first thread portion configured in the first connecting portion and extended along a longitudinal axis, with a first depth formed from a distal end of the first thread portion to the top end of the fuel tank along the longitudinal axis, with a check valve arranged in the first connecting portion along the longitudinal axis and allowing the fuel received in the chamber to flow unidirectionally from the chamber to out of the fuel tank, with the check valve normally closed in an initial position and including a valve body; and an ignition unit removably attached to the top end of the fuel tank, with the ignition unit including a second connecting portion disposed on a bottom end thereof, and a second thread portion formed around the second connecting portion and engageable with the first thread portion, with the second connecting portion including a channel formed therethrough, and a top pillar located in the channel to selectively push against the valve body of the check valve to slide along the longitudinal axis; wherein when the ignition unit is attached to the fuel tank, the top pillar pushes against the valve body of the check valve, with the check valve to be opened, with a second depth formed from an end of the valve body adjacent to the ignition unit to the top end of the fuel tank along the longitudinal axis, with the second depth smaller than the first depth; wherein when the ignition unit is detached from the fuel tank, the top pillar is separated from the valve body of the check valve, with the valve body pushed to the initial position, with the check valve to be closed, with a third depth formed from the end of the valve body adjacent to the ignition unit to the top end of the fuel tank along the longitudinal axis, with the third depth smaller than the second depth. |
