Abstract: An air conditioner comprising:a compressor for compressing a refrigerant,an outdoor heat-exchanger,a pressure reducing device which controls flow rate of said refrigerant,an indoor heat-exchanger,refrigerant pipes connecting said compressor, said outdoor heat-exchanger, said valve and said indoor heat-exchanger in series,characterized in thatsaid pressure reducing device is a thermal electric type expansion valve comprising a bimetal piece held in a heat insulated manner and to move its moving part responding to an input electric power to a heater to heat said bimetal piece thereby to change flow rate of said valve and,said air conditioner further comprises an electric power output means which issues said input electric power, value of which changes responding to a refrigerant state difference between a first refrigerant state measured by a first measurement element disposed on either one of said indoor heat-exchanger or said outdoor heat-exchanger that is functioning as an evaporator and a second refrigerant

Abstract: This invention is directed to a temperature control apparatus for an air-conditioning apparatus which does not require a manual operation in controlling the temperature of a house room relative to the outdoor temperature. The control apparatus utilizes a micro-computer having a linear function stored thereon. The control of the indoor temperature is carried out by calculating the desired indoor temperature using the linear function of outdoor temperature and controlling the air-conditioning apparatus using the desired indoor temperature.

Abstract: A motor compressor has a compression mechanism including compressor components such as a cylinder and a piston and a driving motor coupled to a power source for driving the compressor components through a crank mechanism, and a cut-off device for cutting off the driving motor from the power source. The cut-off device is adapted to cut off the driving motor from the power source when the rotational angle of a crank shaft of the crank mechanism is within a predetermined range at the time of shutting down of operation of the driving motor for minimizing the vibration of the motor compressor.