Electric control system for liquid heating apparatus of the pulse combustion type
US5099108A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Jan 9, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2233/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A liquid heating apparatus includes a pulse combustion burner mounted to a liquid vessel and having a combustion chamber secured to a side wall of the vessel and immersed in liquid in the vessel, a tailpipe connected at its one end to an exhaust port of the combustion chamber and immersed in the liquid, and a fuel supply conduit in communication with the combustion chamber and being provided thereon with an electrically operated valve which is closed in a deactivated condition to interrupt the supply of fuel into the combustion chamber and opened in an activated condition to permit the supply of fuel into the combustion chamber. An electric control system for the heating apparatus is arranged to detect an instant temperature of the liquid, to memorize a standard rise rate of temperature determined to be smaller than a rise rate of the instant temperature in a condition where a sufficient amount of liquid is stored in the vessel and to be larger than the rise rate of the instant temperature in a condition where there is not any liquid in the vessel, to compare the rise rate of the instant temperature with the standard rise rate and to produce an output signal for deactivation of the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.