Water feed controller for a boiler
US7992527B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 9, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Oct 31, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86413
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A water feed controller which can provide for the addition of a preset fixed amount of water to be added after a low water condition is removed. This system provides for a preset fixed amount of water to be added to a boiler above the amount which triggers the low water condition. This generally inhibits excess cycling from the boiler operating at its minimum safe water level as well as inhibiting overfilling of the boiler. Further, there is discussed a water feed controller which can measure the amount of water added over a prior predetermined period (such as 30 days) which serves as a floating window of time so that a leak or other condition resulting in overly frequent filling can be detected quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.