Patent ID: 7688200
Filing Date: 2010-03-30
Classification: G01F,G01K

Abstract:
1. A container with functions of level, crud and temperature detections, comprising: a hollow casing having a receiving space at an upper side thereof; the casing being formed with a hollow space; a vent hole being formed at a bottom side of the casing for communicating the hollow space and exterior of the casing; an electric heating source installed in the hollow space of the casing and being tightly adhered to a wall of the hollow space below the receiving space; a sensing and control circuit installed at a lower outer side of the casing; the sensing and control circuit including a microcontroller, an analog/digital converter, a gain amplifier, and a trigger circuit; and a wall of the casing being installed with at least one over level detector, at least one level alarm detection point, at least one safety level detection point, at least one liquid temperature detection point, and at least one crud detection point; and wherein the analog/digital converter serves to convert analog signals to digital signals; the microcontroller is a programmable operator which defines rules according to the operation algorithm; the gain amplifier serves to transfer the digital signals from various detectors to the trigger circuit and the analog/digital converter (ADC) so as to be as digital control signals; then the signals are transferred to the microcontroller for further operation; and the operated result signals are outputted through the display unit; wherein the display unit is a LED or liquid crystal display; wherein the over level detection point serves to cause the heating source to stop the heating operation as the liquid within the container is over the detection point; the level alarm detection point causes that when the liquid in the container is lower than this point, the trigger circuit in the heating source will feedback a digital signal to a microcontroller and then an alarm signals are outputted to the display unit; the safety level detection point causes that when the liquid level in the container is lower than this point, the heating source will stop the heating operation; the liquid temperature detection point includes a high temperature detection point and a liquid temperature detection point; when the temperature in the container is between the high temperature detection point and liquid temperature detection point, the heating source will actuate for temperature preservation; the crud detection point causes that when the cruds ˜in the surface of the container generates impedance effect in the heating process, the sensing and control circuit will actuate to clean the container; and a liquid level common joint formed with a loop with above mentioned detection points and then a signal wire is extended to the sensing and control circuit; and thereby the variation of the impedance will feedback to the sensing and control circuit in a shortest time period so as to have precise detecting result.