Sectional high efficiency heat exchanger

Patent · Tue Dec 24 04:00:00 EST 1991

OSTI ID:5644115

Evens, L J

This patent describes an improved sectional high efficiency heat exchanger for exchange of heat both during the burner on and burner off cycles of a gas-fired, forced-air furnace. It comprises a lower combustion chamber means formed of heat conducting material and having a front wall thereof with an inner surface, the lower combustion chamber disposed at the lower portion of the heat exchanger and having a principal burner means disposed adjacent the front wall of the lower chamber and at the lower portion thereof for injecting combusting fuel to form a heated air stream directed backwardly into the lower combustion chamber, and a pilot burner means also disposed adjacent the front wall of the lower portion of the lower combustion chamber for igniting the principal burner means to render the principal burner means into the burner on position, and for remaining in lighted condition when the principal burner means is in the burner off position, combustion gas exit means for exiting flow of the combustion gas streams from the principal burner means and from the pilot burner means from the heat exchanger.

• Assignee: Lennox Industries Inc., Richardson, TX (United States)
• Patent Number(s): A; US 5074280
• Application Number: PPN: US 7-668600
• OSTI ID: 5644115
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
440500* -- Thermal Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
BURNERS
CHEMICAL REACTIONS
COMBUSTION
EFFICIENCY
ENERGY TRANSFER
FLUID FLOW
FLUIDS
FURNACES
GAS FLOW
GASES
HEAT EXCHANGERS
HEAT TRANSFER
MODIFICATIONS
OXIDATION
THERMAL CONDUCTION
THERMOCHEMICAL PROCESSES