Furnace with counterflow heat exchange means
US4955359A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Aug 8, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H3/065
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A forced-air furnace for burning gas or fuel oil or waste oil utilizes relatively few components and effectively heats air for space-heating purposes. The furnace includes a substantially enclosed, elongated housing having an air intake and an air discharge vent and a hollow elongated heat exchanger/combustion chamber which is supported within so as to extend axially along the housing. The furnace also includes a fuel burner assembly supported at the discharge end of the housing for directing a flame and attending combustion products directly into the heat exchanger so that the inner surface thereof absorbs heat generated thereby and so that no part of the flame impinges upon the heat exchanger. Heat transfer from the combustion products to the heat exchanger is enhanced by a pair of removable platen-like baffles mounted within the heat exchanger. The combustion products are expelled from the heat exchanger through a flue discharge conduit having a section positioned within the heat exchanger, and a fan mounted within the housing routes air from the air intake and across the surfaces of both the heat exchanger flue conduit and the dual function heat exchanger/combustion chamber to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.