Patent ID: 6703723
Filing Date: 2004-03-09
Classification: A23C,A47J,G01F

Abstract:
An apparatus for manufacturing soybean products including soybean milk, watery bean curd, and bean curd, the apparatus comprising:a) a body; b) a heater provided in the body, the heater being configured for heating soybeans and water when soybeans and water are provided in the body; and c) a device provided for sensing froth and for blocking froth formation, the device including: i) a ground electrode and a signal electrode, the ground electrode and the signal electrode being electrically connected to each other when the froth is present between the ground electrode and the signal electrode, and the ground electrode and the signal electrode being electrically disconnected from each other when the froth is absent from between the ground electrode and the signal electrode; ii) a first resistor electrically connected to the signal electrode; iii) a first switching transistor electrically connected to the first resistor; iv) a controller electrically connected to the first switching transistor, the controller outputting a control signal for blocking froth when froth is sensed by the froth electrically connecting the ground electrode and the signal electrode; v) a second resistor electrically connected to the controller; vi) a second switching transistor electrically connected to the second resistor; vii) the heater being electrically connected to the second switching transistor; and viii) a third switching transistor electrically connected to the second switching transistor.