To provide a freezing cycle device capable of securing control to a cooling medium circuit with high reliability using a pressure sensor of relatively low precision and low cost in simple and low-cost constitution.
In an operation state, with an intake cooling medium saturation operation means 13 set to operate to make cooling medium in an intake tube of a compressor 1 in a saturated state, difference between detected pressure of an intake pressure sensor 11 and saturation pressure determined by a cooling medium saturation pressure operation means 14 based on input of detected temperature by an intake temperature sensor 12 is stored in an intake pressure sensor calibration means 15. Even in a case where a pressure sensor of relatively low precision and low cost is used, this freezing cycle device can calibrate the pressure sensor by itself. Control to the cooling medium circuit of high reliability similar to a case using a pressure sensor of a relatively high precision and high cost can thus be realized.
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Tomoyasu Sakaguchi
Hiroki Naito