Heater unit
OwnerAnthony Crispin Fellsinventor
Life of this patent
Estimating the term…
Abstract
A heater unit for air handling equipment comprises a peripheral frame 2 across which a plurality of heater tubes 12 extend. The heater tubes 12 have reverse bends, and each extends from an inlet end 6 and an exhaust end 8 disposed on the same side 10 of the frame 2. Respective burner units are provided at the inlet ends of the heater tubes 4. The exhaust ends 8 open into a common manifold from which the combustion gases generated by the burner units are evacuated by means of a fan. The heater unit is suitable for installing in air handling equipment, for example to replace steam or electric heaters, with the frame 2 then serving as part of the ducting of the air handling equipment.
Claims20
A heater unit comprising:
- a peripheral frame having an inlet and an outlet disposed opposite each other;
- a plurality of heater tubes extending across the frame, each heater tube having an inlet end and an outlet end;
- a respective burner unit disposed at the inlet end of each heater tube, each burner unit being provided with a respective regulator for controlling the supply of fuel to that burner unit;
- a common manifold unit into which opens the outlet end of each heater tube.
A heater unit comprising:
- a rectangular peripheral frame having an inlet and an outlet disposed opposite each other, the frame having a length dimension between the inlet and the outlet and having a minimum transverse dimension perpendicular to the length dimension, the length dimension being not more than 50% of the minimum transverse dimension;
- at least three heater tubes extending across the frame in a first direction, each heater tube having an inlet end and an outlet end, the heater tubes being disposed in a single row which extends across the peripheral frame in a second direction perpendicular to the first direction, each heater tube including a reverse bend, whereby the heater tube includes first and second runs interconnected by the reverse bend;
- a respective burner unit disposed at the inlet end of each heater tube, each burner unit being provided with a respective regulator for controlling the supply of fuel to that burner unit;
- a common manifold unit into which opens the outlet end of each heater tube.
Air handling equipment comprising first and second ducting portions and a heater unit mounted between the ducting portions, the heater unit comprising:
- a peripheral frame having an inlet and an outlet disposed opposite each other, the peripheral frame extending between the first and second ducting portions;
- a plurality of heater tubes extending across the frame, each heater tube having an inlet end and an outlet end;
- a respective burner unit disposed at the inlet end of each heater tube, each burner unit being provided with a respective regulator for controlling the supply of fuel to that burner unit;
- a common manifold unit into which opens the outlet end of each heater tube.
A method of modifying air handling equipment comprising ducting and a heater unit mounted in the ducting, the heating unit providing a heating effect by means selected from electricity and steam, the method comprising replacing the heater unit by a replacement heater unit comprising:
- a peripheral frame having an inlet and an outlet disposed opposite each other, the peripheral frame being installed in the ducting;
- a plurality of heater tubes extending across the frame, each heater tube having an inlet end and an outlet end;
- a respective burner unit disposed at the inlet end of each heater tube, each burner unit being provided with a respective regulator for controlling the supply of fuel to that burner unit;
- a common manifold unit into which opens the outlet end of each heater tube.
Dependencies are inferred from the claim text.