| 摘要 |
The invention relates to a food dispenser for portioning and dispensing free-flowing foods, comprising a piston that can be moved to and fro in a cylinder by means of a drive, and with a valve (2) having a valve body (5) that can be driven in rotation exclusively about a rotation axis (7) between a first and a second switch position, wherein in the first switch position, by means of a first channel (14) delimited by the valve body (5), a fluid- conducting connection is created between a suction opening (11) and a work opening (12) assigned to the piston, such that, by a working stroke of the piston, food can be sucked through the suction opening (11) and the work opening (12) into a space formed in particular in the cylinder, and wherein in the second switch position, by means of a second channel (15) delimited by the valve body (5), a fluid-conducting connection is created between the work opening (12) and a discharge opening (13), such that, by a second working stroke of the piston in a second axial direction counter to the first axial direction, food can be conveyed from the cylinder through the work opening (12) and the discharge opening (13), wherein the suction opening (11), the work opening (12) and the discharge opening (13) are staggered, in particular spaced apart from one another, along the rotation axis (7) of the valve body (5). According to the invention, provision is made that the first channel is designed as an outwardly open first groove (16), and that at least one side wall (20, 21) or preferably both mutually opposite side walls (20, 21) of the first groove is/are helical, and/or that the second channel is designed as an outwardly open second groove (17), and that at least one side wall (20, 21) or preferably both mutually opposite side walls (20, 21) of the second groove is/are helical. |
