| 摘要 |
<p>PURPOSE:To realize a precision temperature control by determining the rotational angle of a valve of a right temperature mixer based on the temperature of hot water and cold water, pressure signal and set temperature signal. CONSTITUTION:A desired hot water temperature is set by a temperature setting unit 21. The set value signal (e) is displayed on an indicator 22, and is inputted to a controller 20. The controller 20 is normally inputted with pressure signals (a), (c) of cold water and hot water as detected in a cold water pipe 11 and a hot water pipe 12. It determines the respective heat capacity of cold water and hot water, and determines the mixing ratio between the two fluids so that when they are mixed, the set temperature may be reached, and outputs a control signal (f) to a motor 13. The motor 13 adjusts the rotational angle of a valve of a right temperature mixer 10 based on the signal (f). In this manner, the flow ratio to the mixing chamber of the mixer 10 between cold water and hot water becomes the value as determined by the controller 20, producing hot water at the desired temperature.</p> |
