Refrigerating device

A refrigerating device having an inverter circuit for generating an alternating voltage, a phase control circuit for controlling the switching phase in the inverter circuit, a vibrator compressor to which the alternating voltage from the inverter circuit is supplied, a condenser to which the refrigerant is fed from the vibrating compressor, a capillary tube provided on the downstream side of the condenser, an evaporator provided on the downstream side of the capillary tube, the inverter circuit having at least one main semiconductor element with a control portion and constructed so as to change the oscillation frequency of the alternating voltage in accordance with changes in the natural oscillation frequency of a mechanical system of the compressor, the phase control circuit having at least one of an ambient temperature sensor and an evaporator temperature sensor, wherein the phase control circuit supplies a control signal for the inverter circuit for controlling the phase of the alternating voltage supplied to the vibrating compressor in accordance with at least one of the ambient temperature and the evaporator temperature so as to lower the compression level of the refrigerant by reducing the piston stroke of the vibrating compressor in accordance with changes in at least one of the ambient temperature and the evaporator temperature.