An adjustable vortex flame device includes a control head delimiting a through hole with an opening and including a flow guiding mechanism including a plurality of vanes and a flow control head inserting in the through hole. The flow control head includes a first member and a second member detachably engaging with each other and delimiting a first chamber and a second chamber connecting to each other. The two channels extend in the first member and to an outer periphery of the flow control head and connect to the first chamber. The flow control head has two flow outlets defined at distal ends of the two channels and a flow inlet defined at a distal end of the second chamber. A hollow and transparent shield is disposed above the control head and delimits a space fluidly connecting to the through hole.

An adjustable vortex flame device includes a control head delimiting a through hole with an opening and including a flow guiding mechanism including a plurality of vanes and a flow control head inserting in the through hole. The flow control head includes a first member and a second member detachably engaging with each other and delimiting a first chamber and a second chamber connecting to each other. The two channels extend in the first member and to an outer periphery of the flow control head and connect to the first chamber. The flow control head has two flow outlets defined at distal ends of the two channels and a flow inlet defined at a distal end of the second chamber. A hollow and transparent shield is disposed above the control head and delimits a space fluidly connecting to the through hole.

The present invention provides a combustion device, which includes a fuel tank assembly and a candle wick. The fuel tank assembly includes a first tank, a second tank, a connection tube, and a switch. The capacity of the second tank is less than the capacity of the first tank. An end of the connection tube is connected to the first tank, and another end of the connection tube is connected to the second tank. The connection tube communicates with internal spaces of the first and second tanks. The switch is disposed between the first and second tanks so as to selectively open or close a channel interconnected between the first and second tanks. The candle wick is mounted in the second tank. Therefore, the combustion device is easy to use by the above structure.

The present invention provides a combustion device, which includes a fuel tank assembly and a candle wick. The fuel tank assembly includes a first tank, a second tank, a connection tube, and a switch. The capacity of the second tank is less than the capacity of the first tank. An end of the connection tube is connected to the first tank, and another end of the connection tube is connected to the second tank. The connection tube communicates with internal spaces of the first and second tanks. The switch is disposed between the first and second tanks so as to selectively open or close a channel interconnected between the first and second tanks. The candle wick is mounted in the second tank. Therefore, the combustion device is easy to use by the above structure.

A combustion device includes a candle wick and a flow guiding assembly. The flow guiding assembly includes a support, a plurality of guide vanes secured to the support, a first shield member fixed at a side of the support, and a second shield member pivotally connected to the first shield member. The second shield member is pivotable in relation to the first shield member between a closed position and an open position to selectively form a gap. The plurality of guide vanes is disposed between the first and second shield members. The candle wick is disposed between the plurality of guide vanes. Therefore, the combustion device is easy to use by the above structure.

A combustion device includes a candle wick and a flow guiding assembly. The flow guiding assembly includes a support, a plurality of guide vanes secured to the support, a first shield member fixed at a side of the support, and a second shield member pivotally connected to the first shield member. The second shield member is pivotable in relation to the first shield member between a closed position and an open position to selectively form a gap. The plurality of guide vanes is disposed between the first and second shield members. The candle wick is disposed between the plurality of guide vanes. Therefore, the combustion device is easy to use by the above structure.

The present invention provides a combustion device, which includes a fuel tank assembly and a candle wick. The fuel tank assembly includes a first tank, a second tank, a connection tube, and a switch. The capacity of the second tank is less than the capacity of the first tank. An end of the connection tube is connected to the first tank, and another end of the connection tube is connected to the second tank. The connection tube communicates with internal spaces of the first and second tanks. The switch is disposed between the first and second tanks so as to selectively open or close a channel interconnected between the first and second tanks. The candle wick is mounted in the second tank. Therefore, the combustion device is easy to use by the above structure.

The present invention provides a combustion device, which includes a fuel tank assembly and a candle wick. The fuel tank assembly includes a first tank, a second tank, a connection tube, and a switch. The capacity of the second tank is less than the capacity of the first tank. An end of the connection tube is connected to the first tank, and another end of the connection tube is connected to the second tank. The connection tube communicates with internal spaces of the first and second tanks. The switch is disposed between the first and second tanks so as to selectively open or close a channel interconnected between the first and second tanks. The candle wick is mounted in the second tank. Therefore, the combustion device is easy to use by the above structure.

The present invention provides a combustion device, which includes a candle wick and a flow guiding assembly. The flow guiding assembly includes a support, a plurality of guide vanes secured to the support, a first shield member fixed at a side of the support, and a second shield member pivotally connected to the first shield member. The second shield member is pivotable in relation to the first shield member between a closed position and an open position to selectively form a gap. The plurality of guide vanes is disposed between the first and second shield members. The candle wick is disposed between the plurality of guide vanes. Therefore, the combustion device is easy to use by the above structure.

The present invention provides a combustion device, which includes a candle wick and a flow guiding assembly. The flow guiding assembly includes a support, a plurality of guide vanes secured to the support, a first shield member fixed at a side of the support, and a second shield member pivotally connected to the first shield member. The second shield member is pivotable in relation to the first shield member between a closed position and an open position to selectively form a gap. The plurality of guide vanes is disposed between the first and second shield members. The candle wick is disposed between the plurality of guide vanes. Therefore, the combustion device is easy to use by the above structure.