Water boiler waste heat recovery device and waste heat power supply device

The utility model discloses a water boiler waste heat recovery device and a waste heat power supply device. Box body, three heat conduction pipes are arranged in the box body in parallel; wherein thehot water heat conduction pipe is arranged in the middle and communicated with condensate water of the water boiler, and the cold water heat conduction pipes are arranged on the two sides of the hot water heat conduction pipe and communicated with normal-temperature tap water. A gap is formed between every two adjacent heat conduction pipes, a thermoelectric power generation piece set is installedin each gap, each thermoelectric power generation piece set is formed by arranging a plurality of thermoelectric power generation pieces in the length direction of the gap and then connecting the thermoelectric power generation pieces in series, one face of each thermoelectric power generation piece is attached to the corresponding cold water heat conduction pipe, and the other face of each thermoelectric power generation