Combination hot air furnace and hot water heater
US5361751A · kind A · utility
Inventor
Key dates
| Filing date | Dec 15, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Dec 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A combination hot air furnace and hot water heater (10) having a furnace (20), a gas flow control valve (40) and a hot water heater (60) constructed as an integral assembly. Furnace (20) has furnace gas burner (33) supported below furnace heat exchanger (32). Furnace heat exchanger (32) is supported within conduit (24) through which air is passed for heating. Gas flow control valve (40) is sealingly mounted upon the top outlet (36) of furnace heat exchanger (32), and may selectively direct the heat of combustion from furnace gas burner (33) toward water tank (62) for heating water within the water tank. Gas flow control valve (40) may also seal off furnace heat exchanger (32) from the flow control valve and draw outside combustion air into valve body (42) through side wall opening (48) for providing combustion air for water tank gas burner (64).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.