| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a beverage dispenser where a piston (P) is precisely stopped at the prescribed position of a cylinder (S) without making the P contact with the S when selling a beverage. <P>SOLUTION: The beverage dispenser is provided with: a first detection means for detecting the P and the S being at prescribed relative positions and outputting a first detection signal; a second detection means for detecting the P and the S being at contacting positions and outputting a second detection signal; a pulse generation means for generating pulses equivalent to the rotation of a motor for driving the P; a counting means for counting pulses from the output of the first detection signal to that of the second detection signal; a storage means for storing a counted value; an arithmetic means for subtracting a fixed value for brewing the beverage from the counted value; and a control means for fixing the stopping position of the P when brewing the beverage based on a subtracted value. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
