US 12,442,559 B2
Hot water supplier monitoring system
Naoya Yoshida, Hyogo (JP); Toshihiko Hamagami, Hyogo (JP); Kazuhiro Nishimura, Hyogo (JP); and Hisataka Hayase, Hyogo (JP)
Assigned to NORITZ CORPORATION, Hyogo (JP)
Filed by NORITZ CORPORATION, Hyogo (JP)
Filed on Sep. 8, 2022, as Appl. No. 17/940,008.
Claims priority of application No. 2021-153398 (JP), filed on Sep. 21, 2021.
Prior Publication US 2023/0085869 A1, Mar. 23, 2023
Int. Cl. F24H 15/104 (2022.01); F24H 9/25 (2022.01); F24H 15/262 (2022.01); F24H 15/269 (2022.01); F24H 15/296 (2022.01); F24H 15/457 (2022.01)
CPC F24H 15/104 (2022.01) [F24H 9/25 (2022.01); F24H 15/262 (2022.01); F24H 15/269 (2022.01); F24H 15/296 (2022.01); F24H 15/457 (2022.01); G05B 2223/04 (2018.08); G05B 2223/06 (2018.08)] 2 Claims
OG exemplary drawing
 
1. A hot water supplier monitoring system, comprising a monitoring server for monitoring a plurality of hot water suppliers via a communication network, wherein the hot water supplier comprises a combustion unit; a fuel supply unit for supplying fuel to the combustion unit; a combustion fan for supplying combustion air to the combustion unit; an ignition device of the combustion unit; a heat exchange unit; and a control unit for controlling a hot water supply operation in which hot water is supplied by adjusting temperature of hot water heated by the heat exchange unit using combustion heat by burning fuel in the combustion unit by combustion operation, and the monitoring server accumulates operation data of the combustion operation transmitted from the plurality of hot water suppliers via the communication network, and predicts and notifies occurrence of malfunction for each hot water supplier based on trend of change over time in the operation data,
wherein the operation data comprises a number of flame quenchings of the combustion unit in the combustion operation, and
the monitoring server divides the plurality of hot water suppliers into a plurality of groups according to installation areas, compares a group average value of the number of flame quenchings of a same period among the plurality of groups and compares a group average value of the number of flame quenchings of a specific group with a previous group average value of the number of flame quenchings of the specific group, determines whether or not there is an abnormality in the group average value of the number of flame quenchings of the specific group based on results of the comparisons, and determines whether or not the combustion operation of the hot water suppliers belonging to the specific group meet a normal usage condition of the hot water suppliers based on weather information and infrastructure information in an installation area of the specific group,
wherein when it is determined that the normal usage condition of the hot water supplier is not met, the monitoring server excludes the operation data of the specific group determined as having an abnormality in the group average value of the number of flame quenchings from malfunction occurrence prediction for a specific group determined as having an abnormality in the number of flame quenchings, and performs the malfunction occurrence prediction for each hot water supplier based on remaining operation data after excluding the operation data of the specific group determined as having an abnormality in the group average value of the number of flame quenchings.