Electronic smoking device

An electronic smoking device comprising a power supply/atomizer portion and a replaceable liquid reservoir portion configured to be coupled with the power supply/atomizer portion, wherein

• the liquid reservoir portion comprises a liquid reservoir adapted for storing a liquid and the power supply/atomizer portion comprises a power supply and an atomizer adapted to atomize the liquid stored in the liquid reservoir when
• operated by the power supply, wherein
• the power supply/atomizer portion further comprises
• a penetrating element configured to penetrate the liquid reservoir when the power supply/atomizer portion is coupled with the liquid reservoir portion and
• a wick configured to be attached to the penetrating element and configured so that a portion of the wick entering the liquid reservoir when the power supply/atomizer portion is coupled with the liquid reservoir portion has a U-shape,
• wherein the power supply/atomizer portion-includes a sealing element that is configured, when the power supply/atomizer portion is coupled with the liquid reservoir portion, to form both an air seal around an air passage of the liquid reservoir portion and a liquid seal around an opening the liquid reservoir of the liquid reservoir portion.