Direct contact water heater with dual water heating chambers
US5765546A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 30, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | May 30, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28C3/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A dual direct contact water heater is described and consists of a heater housing having two sections, each section having a water reservoir. One section provides hot water at a high temperature and provides a source of heat exchange to heat an external source of water for commercial use. A burner is provided in the first section to provide the heat source to a packing through which water percolates. The source of water for the first section is the outlet of a heat exchanger whereby water from the reservoir is recirculated in a closed circuit in the first section. Hot gases rising from the first section is directed to a second section which also includes a second packing and a reservoir and it also has a closed loop whereby a second source of hot water, at a lower temperature, is utilized in a closed loop and in heat exchange with a second external source to produce domestic hot water or without heat exchanger to produce hot water for various processes. The fumes at the exhaust port of the second section are cooled considerably whereby the total efficiency of the water heater is greatly increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.