To provide a control device for a refrigerator that can perform, even when a different refrigerant is used for the refrigerator, overheating degree control suitable to the refrigerant.SOLUTION: A control device 2 comprises: a pressure acquisition part which acquires exit pressure of an evaporator 6 from a pressure sensor 7 detecting the pressure of a refrigerant at an exit of the evaporator 6; a temperature acquisition part which acquires an exit temperature of the evaporator 6 from a temperature sensor 8 detecting the temperature of the refrigerant at the exit of the evaporator 6; a saturation temperature table acquisition part which acquires one of a plurality of saturation temperature tables recorded in a recording part 4, the plurality of saturation temperature tables corresponding to different refrigerants and a saturation temperature table specifying a gas-side saturation temperature at each pressure of the corresponding refrigerant; and an expansion valve control part which controls, based upon the acquired saturation temperature table, the acquired exit pressure, and the acquired exit temperature, an expansion valve opening of an electronic expansion valve 5 in the refrigerator so as to obtain a predetermined overheating degree.SELECTED DRAWING: Figure 1

    【課題】異なる冷媒が冷凍機に用いられた場合であっても、その冷媒に適した過熱度制御を行うことが可能な冷凍機の制御装置を提供する。【解決手段】制御装置2は、蒸発器6の出口における冷媒の圧力を検出する圧力センサ7から、蒸発器6の出口圧力を取得する圧力取得部と、蒸発器6の出口における冷媒の温度を検出する温度センサ8から、蒸発器6の出口温度を取得する温度取得部と、記録部4に記録された複数の飽和温度テーブルのうちの1つを取得する飽和温度テーブル取得部であって、複数の飽和温度テーブルの各々は、異なる冷媒に対応し、飽和温度テーブルは、対応する冷媒についての各圧力におけるガス側飽和温度を指定する、飽和温度テーブル取得部と、取得された飽和温度テーブル、取得された出口圧力、および取得された出口温度に基づき、所定の過熱度を得られるように、冷凍機内の電子膨張弁5の膨張弁開度を制御する膨張弁制御部とを備える。【選択図】図1


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    Title :

    CONTROL DEVICE, REFRIGERATOR, CONTROL METHOD AND PROGRAM


    Additional title:

    制御装置、冷凍機、制御方法、およびプログラム


    Contributors:

    Publication date :

    2019-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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