| 摘要 |
PURPOSE:To make it possible to indicate the temperature inside a refrigrator by means of figures which come from combination of luminous diode after the temperature inside the refrigerator is transformed into electric signals by installing a detector of temperature inside the refrigerator and an indicator, which shows the temperature by means of figures, in the front of the door. CONSTITUTION:The inside of a refrigerator cabinet 1 is divided into two compartments by a middle partition wall 2; a freezing compartment 3 and a food compartment 4. Detectors of temperature, such as thermistors 11, 12, detect the temperature inside the freezing compartment 3 and the food compartment 4 respectively. The indicator 15 shows the temperature inside the freezing compartment 3 and the food compartment 4 by means of figures. The circuit 30 including a thermistor 31 will change electric potential at extraction point 32 with the change of temperature inside the freezing compartment or the food compartment. The electric potential at extracton point 35 in standard circuit is connected with the temperature in advance. The circuit 30 has a fixed resistance 38 for the freezing compartment and a fixed resistance 36 for the food compartment which have parallel circuits with a switch 36 and a thermistor 31 which have points of contact a, b, and c. The switch is handled from outside. |
