| 摘要 |
The present invention provides a hot water supply device. When a hot water supply operation is started in response to an instruction for checking a heat exchange state, a heat exchange state determiner 12 measures a post-boiling temperature Tup, which indicates the rise width of a temperature detected by a heat exchange outlet temperature sensor 26 from the point when the hot water supply operation stopped, and outputs a heat exchange success report if the post-boiling temperature Tup is lower than a first threshold temperature. Further, when the hot water supply operation is started independently of the instruction for checking a heat exchange state, the heat exchange state determiner 12 outputs a report of clogging of a heat exchanger if the post-boiling temperature Tup is higher than a second threshold temperature Bth, which is higher than the first threshold temperature Ath. |
| 主权项 |
1. A hot water supply device comprising:
a heat exchanger connected to a water supply pipe and a hot water supply pipe; a burner that heats the heat exchanger; a heat exchange outlet temperature sensor that detects a temperature of water in the heat exchanger or the hot water supply pipe in a vicinity of a place where the heat exchanger and the hot water supply pipe are connected; a running water sensor that detects for a presence of running water in the heat exchanger; a hot water supply controller that carries out a hot water supply operation in which the burner is turned on to heat water circulating in the heat exchanger in a case where running water is detected by the running water sensor, and turns the burner off to stop the hot water supply operation in a case where the running water is not detected by the running water sensor; and a heat exchange state determiner which, in a case where the hot water supply operation stops after the hot water supply operation is started in response to a predetermined instruction for checking a heat exchange state, carries out heat exchange success determination processing in which a post-boiling temperature indicating a rise width of a temperature detected by the heat exchange outlet temperature sensor from a time point at which the hot water supply operation stopped is measured, and the post-boiling temperature and a first threshold temperature are compared, and performs a predetermined successful heat exchange notification in a case where the post-boiling temperature is lower than the first threshold temperature, and carries out, in a case where the hot water supply operation stops after the hot water supply operation is started independently of the instruction for checking a heat exchange state, heat exchanger clogging determination processing in which the post-boiling temperature is measured and the post-boiling temperature is compared with a second threshold temperature, which is higher than the first threshold temperature, and performs a predetermined heat exchanger clogging notification in a case where the post-boiling temperature is higher than the second threshold temperature. |
