摘要：【中文】本发明公开了一种高精度油冷却机及控制方法，其中，所述高精度油冷却机包括制冷系统以及循环油路系统，所述制冷系统包括主流路系统和旁支流路系统；所述主流路系统包括依次首尾连通的变频压缩机、冷凝器、风机、电子膨胀阀以及蒸发器；所述风机设置在冷凝器上；所述旁支流路系统包括旁通流量调节阀，所述旁通流量调节阀与冷凝器和电子膨胀阀并联设置；所述循环油路系统包括油箱以及油泵；所述油箱的进油口与机床的出油口连通，该油箱的出油口与所述油泵的进油口连通，所述油泵的出油口与所述蒸发器的进油口连通，该蒸发器的出油口与机床的进油口连通。本发明的高精度油冷却机不仅可以实现精确控温，而且更加节省能源。 【EN】The invention discloses a high-precision oil cooler and a control method, wherein the high-precision oil cooler comprises a refrigerating system and a circulating oil path system, and the refrigerating system comprises a main flow path system and a bypass flow path system; the main flow path system comprises a variable frequency compressor, a condenser, a fan, an electronic expansion valve and an evaporator which are sequentially communicated end to end; the fan is arranged on the condenser; the bypass flow path system comprises a bypass flow regulating valve, and the bypass flow regulating valve is connected with the condenser and the electronic expansion valve in parallel; the circulating oil circuit system comprises an oil tank and an oil pump; the oil inlet of the oil tank is communicated with the oil outlet of the machine tool, the oil outlet of the oil tank is communicated with the oil inlet of the oil pump, the oil outlet of the oil pump is communicated with the oil inlet of the evaporator, and the oil outlet of the evaporator is communicated with the oil inlet of the machine tool. The high-precision oil cooler can realize accurate temperature control and save energy sources.