Liquid dispenser with a discharge head

A liquid dispenser, in particular for discharging pharmaceutical or cosmetic liquids, having the following features:

• a. the liquid dispenser comprises a base unit with a liquid reservoir for receiving liquid before the discharge, and
• b. the liquid dispenser has a discharge head for fastening to the base unit of the liquid dispenser,
• c. the liquid dispenser has a pump device which may be actuated by a relative translatory movement of the discharge head relative to the base unit and conveys liquid out of the liquid reservoir into the discharge head or the liquid reservoir is configured as a pressure accumulator and the liquid dispenser has a valve device which may be actuated by a relative translatory movement of the discharge head relative to the base unit and conveys liquid out of the liquid reservoir into the discharge head,
• d. the discharge head has a housing which is configured for the stationary or linearly movable or linearly and rotatably movable fastening to the base unit of the liquid dispenser, and
• e. the discharge head has a liquid outlet through which liquid may be discharged from the liquid reservoir into a surrounding atmosphere, and
• f. the discharge head has a liquid inlet through which liquid may be conducted out of the liquid reservoir to the liquid outlet, and
• g. the discharge head is configured for selectively discharging liquid, on the one hand, in the form of an atomized spray jet and, on the other hand, in the form of an non-atomized liquid stream or in the form of individual droplets,
• h. the liquid outlet has an outlet channel penetrating the housing,
• i. an internal part is arranged inside the outlet channel, a spray opening at the end of a spray duct being provided on the front face of said internal part facing in the direction of the surrounding atmosphere,
• j. the internal part and the outlet channel are displaceable relative to one another so that in a first relative position a bypass duct is produced between an internal wall of the outlet channel and an outer face of the internal part, the flow resistance thereof being lower than that of the spray duct, and in a second relative position this bypass duct is at least partially closed so that the flow resistance of the bypass duct is greater than that of the spray duct.