Spiral pipe spraying heat exchanger

The utility model discloses a spiral pipe spraying heat exchanger and relates to a heat exchanger. The spiral pipe spraying heat exchanger comprises a spraying pipe and a heat exchanging pipe. The heat exchanging pipe is fixed in a cooling liquid recycling pool through supporting feet. The heat exchanging pipe is a rectangular spiral ascension pipeline formed by straight pipes with different lengths in a head-tail-communication mode. The length of a straight pipe on the lower layer is larger than the length of a straight pipe on the upper layer. A cooled liquid inlet is formed above the heat exchanging pipe. A cooled liquid outlet is formed below the heat exchanging pipe. The spraying pipe is placed right above the heat exchanging pipe and is formed by a plurality of pipelines which are communicated on the same plane and are communicated. The spraying pipe is provided with a plurality of nozzles toward the heat exchanging pipe. A recovery processing pipeline is arranged on one side of the cooling liquid recycling pool. According to the spiral pipe spraying heat exchanger, the heat exchanging pipe is a prism-frustum-shaped rectangular spiral pipe, the straight pipe on the upper layer cannot cover the straight pipe on the lower layer, cooling liquid can be sprayed to each straight pipe directly, and the purpose of efficient heat exchanging is achieved.