| 摘要 |
PURPOSE:To prevent a frosting at an indoor heat exchanger and eliminate an unti-freezing thermistor by a method wherein an efficient control over a frequency is performed under a relation between a room temperature and a predetermined temperature to vary the number of rotation of a compressor. CONSTITUTION:An outdoor heat exchanger 2 is arranged at one side of a compressor 1 of which number of rotation is variable, an indoor heat exchanger 3 is arranged at the outdoor heat exchanger 2, the indoor heat exchanger 3 is arranged at the other side of the compressor 1 to constitute a heating medium circulation circuit 4 in an air conditioner. A room temperature sensor element TH1 is arranged so as to detect a room temperature, and a control electric circuit X for use in controlling the number of rotation of the compressor 1 with an electrical sensing signal of the sensor element TH1 during a dehumidifying operation is arranged. A microcomputer IC1 in the control electric circuit X judges a region in a thermo-line where a room temperature is set in reference to input data of set temperature and input data of a difference in temperature between a room temperature and a predetermined temperature, and then an output is produced at the pulse width modified wave generating circuit IC4. |
