Abstract: A high efficiency gas furnace utilizes a unique pre-mixed design in combination with a pressurized/high velocity combustion process. The combustion process occurs in a combustion chamber and the high temperature high velocity products of combustion follow a circuitous route from the combustion chamber through finned tubular conduits to an exhaust. Heat from the high temperature high velocity products is transferred to the finned tubular conduits. An air blower assembly forces air across the finned tubular conduits and the combustion chamber to remove the heat from the finned tubular conduits and transfers this heat to a building or an enclosed portion thereof.

Abstract: A high efficiency gas furnace utilizes a unique pre-mix design in combination with a pressurized/high velocity combustion process. The combustion process occurs in a combustion chamber and the high temperature high velocity products of combustion follow a circuitous route from the combustion chamber through finned tubular conduits to an exhaust. Heat from the high temperature high velocity products is transferred to the finned tubular conduits. An air blower assembly forces air across the finned tubular conduits and the combustion chamber to remove the heat from the finned tubular conduits and transfers this heat to a building or an enclosed portion thereof.

Abstract: A high efficient gas fired frying apparatus for deep frying food is disclosed. The gas fired frying apparatus is comprised of a supply system for air and fuel gas, a compression system, a burner system, a combustion chamber, a heat exchanger and an exhaust system. The air and fuel gas are mixed and pressurized prior to being introduced to the burner system. The burner system works in conjunction with the combustion chamber to support combustion by balancing the premixture velocity with the flame velocity such that smooth and complete combustion occurs. The high velocity components of combustion are directed through a heat exchanger which transfers the heat to the cooking oil. The exhaust system recovers additional energy from the products of combustion and a catalytic converter may be added for removal of unwanted pollutants. Both the combustion chamber and the heat exchanger are removably disposed within the frypot to facilitate cleaning and oil replacement.

Abstract: A zone controlled furnace for heat-treating of metallic and non-metallic stocks positions one or more modular metallic combustion burners in the furnace chamber and along the path of the stock to selectively control the heat supplied to any zone of the furnace chamber. The burners receive and ignite a high pressure premix of combustible gas and are illustrated by a porous fiber metallic sheet and a jet burner arrangement which discharge flames direct, and a jet nozzle which discharges heated combusted products. The high pressure/velocity flame and products of combustion ejecting from the burners will impinge on the workpieces and generate a very high convective heat transfer rate in a turbulent flow, as well as radiant heat, thereby resulting in uniform heating of non-uniform shaped pieces and maximizing overall heat transfer in the furnace. The apparatus can be controlled to act in a heating mode, or in only a cooling mode, or a combination of modes in any zone for precise temperature control.

Abstract: An improved heating system is disclosed for providing heated air to a heated space, preferably using a gaseous fuel as the energy source. The system preferably includes an air heating sub-system, a compact combustion chamber, a separate cold air supply sub-system for conveying cold air from the heated space to the air heating sub-system, a combustion chamber heat exchanger in fluid communication with the cold air supply sub-system for transferring heat thereto, and a separate air circulating sub-system for withdrawing cold circulating air from the heated space. A mixing chamber is provided for mixing heated air from the air heating sub-system with the cold circulating air to provide heated air to the space. The system also preferably includes separate sub-systems for supplying pressurized combustion air and pressurized gaseous fuel to the air heating sub-system and for forcibly conveying exhaust gases therefrom without the need for a draft-type chimney or stack.

Abstract: A high efficiency gas furnace utilizes a unique premix design in combination with a pressurized/high velocity combustion process. The combustion process occurs in a combustion chamber and the high temperature high velocity products of combustion follow a circuitous route from the combustion chamber through finned tubular conduits to an exhaust. Heat from the high temperature high velocity products is transferred to the finned tubular conduits. An air blower assembly forces air across the finned tubular conduits and the combustion chamber to remove the heat from the finned tubular conduits and transfer this heat to a building or an enclosed portion thereof.

Abstract: A high efficient gas fired frying apparatus for deep frying food is disclosed. The gas fired frying apparatus is comprised of a supply system for air and fuel gas, a compression system, a burner system, a combustion chamber, a heat exchanger system and an exhaust system. The air and fuel gas are mixed and pressurized prior to being introduced to the burner system. The burner system works in conjunction with the combustion chamber to support combustion by balancing the premixture velocity with the flame velocity such that smooth and complete combustion occurs. The high velocity components of combustion are directed through a heat exchanger which transfers the heat to the cooking oil. The exhaust system recovers additional energy from the products of combustion and a catalytic converter may be added for removal of unwanted pollutants.

Abstract: A steel reheating furnace is characterized by a plurality of elongated, longitudinally extending, heating elements and associated skid rails, the skid rails having primary portions laterally offset with the portions supporting respective of laterally offset first and second areas on the bottom of slabs as they pass through the furnace. The heating elements direct their heat at the respective first areas when the slabs have their second areas supported by the rail portions, and vice versa, whereby to eliminate skid marks caused by the rail portions shielding the slab.

Abstract: An improved method and apparatus for heating fluids wherein separate gas streams of natural gas and air are compressed to a preselected pressure, passed to an injection and mixing zone for thorough mixing including expansion of one gas and compression of the other, passed to a combustion chamber for burning with the combustion products being further contracted and passed to a heat exchanger conduit where such combustion products are progressively further contracted as they are brought into heat exchange with the fluid to be heated.