| 摘要 |
The invention relates to a flow meter for measuring a flowing medium, in particular the amount of useful warm water in pipe systems, which meter includes a housing and a rotation chamber, formed inside the housing, and also a metering chamber, a prerotation spindle being arranged coaxially in the rotation chamber and, furthermore, a rotatingly guided metering ball being provided on a constrained path in the metering chamber. The essence of the invention is that on the prerotation spindle (3) there is formed on the lateral surface a further element, preferably formed as a triple-threaded spiral, furthermore that there is likewise arranged coaxially between the prerotation spindle (3) and the metering chamber (4) a spiral-shaped adjusting element (5), serving for the continuous setting and controlling of the metering space, and the metering track (6) is formed with a diameter which gradually decreases section by section in the direction of the discharge mouth, the metering ball (7) being forced onto the track of reduced diameter correspondingly as the medium volume decreases. <IMAGE>
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