To reduce freezing time by applying electric charge or a magnetic field to a part of a pipeline to flow a refrigerant.

Electric charge or a magnetic field is applied to freezing pipes 1, 2. Therefore, since a metallic ion and an inorganic ion can be gathered to the periphery of an electrode or a magnetic pole on the outer periphery of the freezing pipes 1, 2, when freezing starts from soil 3 in the vicinity of the freezing pipes, moisture in the soil 3 freezes, and at the same time, the metallic ion and the inorganic ion can also be frozen, so that freezing efficiency is improved by preventing the deviatory existence in the soil. A Coanda spiral flow is desirably used to flow in and discharge a refrigerant. The refrigerant can be easily recovered by turning air and a waterdrop gathered in a bent pipe and a U-shape pipe to the shaft center when the Coanda spiral flow is flowed to a pipeline having, for example, the U-shaped pipe or the bent pipe. Therefore, besides freezing time can be reduced, the refrigerant in a freezing outer pipe, a freezing inner pipe and a U-shaped pipe can be easily discharged.