The infusion brewer has a filter path forming a continuous loop around a plurality of rotary shafts, the plurality of rotary shafts being operable to cycle a continuous loop filter along the filter path, the filter path having a steeping area; and an infusion enclosure having a bottom opening positionable into an infusion position against the continuous loop filter at the steeping area.

A beverage extracting device including a vessel for receiving and mixing a powder material and hot liquid, a filter beneath the vessel, an electrical gas pump that connects through a duct to the vessel for supply-ing pressurized gas into the vessel, and an outlet for extracted liquid at an outlet side of the filter which is opposite to the vessel. The outlet connects to an outlet duct for the extracted liquid. A current sensing circuit connects to a power line of the electrical gas pump for monitoring an electrical current through the electrical gas pump. The current sensing circuit is connected to a controller for detecting whether the electrical current is above a preestablished threshold. The controller is arranged to reduce power supplied to the electrical gas pump when the controller establishes that the electrical current through the electrical gas pump is above the preestablished threshold.

A coffee brewing mechanism includes a brewing module having a swing arm, a pot and a driving assembly. The pot is connected to the swing arm and is operable to swing back and forth between an ascending position and a press-down position. The driver assembly includes a link rod and a driving member, wherein one end of the link rod is connected to the swing arm and the other end is provided with a follower. A cam is connected to the driving member, has a working curve and is in rolling contact with the follower. The working curve is formed by connecting a first arc and a second arc, and a radius of curvature of the first arc is greater than a radius of curvature of the second arc.