| 摘要 |
PROBLEM TO BE SOLVED: To provide a detection unit and a hot water supply system that are hardly affected by an influence of a foreign object.SOLUTION: A detection unit 68 comprises: a body 93 that has a first flow channel 105 and a second flow channel 109 formed, and has a junction point 111 of the first flow channel 105 and the second flow channel 109 provided inside; a rotation axis 118 that extends toward from the first flow channel 105 to the second flow channel 109; impellers 120 and 130 that rotate in accordance with respective flows of a fluid passing the first flow channel 105 and a fluid passing the second flow channel 109; and a detection part 114 that is for detecting a rotation status of the impellers 120 and 130. A first bearing 124 and a second bearing 126 rotatably supporting the rotation axis 118 are provided on an upstream side further than the junction point 111 in the first flow channel 105. |
