Water heater
US8733297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2009 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Jul 22, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24D2220/044
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
At the time of starting a hot water discharge operation, a controller determines whether the first operation was made after the power source is switched on in S1, and the controller determines whether 5 minutes have passed after the previous operation in S2. When the first operation was not made or 5 minutes have lapsed after the last operation, the controller determines whether a difference between a detected temperature acquired by a thermistor and a preset temperature is more than 10° C. in S3. When a temperature difference is more than 10° C., a water flow rate servo is set at a position where a flow rate of flowing water is reduced from a determined flow rate by a predetermined amount in S4, and the controller performs a temperature control of discharged hot water in S8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.