<p>The electric vacuum cleaner (10A) is provided with a heat exchanger (30A) that communicates with the exhaust channel (122, 126) and is configured using multiple heat-exchanging bodies, such as heat exchanger tubes (310), wherein exhaust can flow. Not only is full and efficient cooling of the exhaust circulating in the exhaust-circulating channels thereby possible but the structure of the heat exchanger (30A) can also be simplified.</p>
