Reflector for radiant tube heater

摘要

A reflector for an elongate radiant tube heater having a tubular conduit through which hot combustion gases flow comprises an elongate metal reflecting member that can extend along the length of the tube heater in order to cover the top and sides thereof and a layer of heat resistant insulation extending over the reflecting member. The reflector includes two central panel portions meeting along the longitudinal centerline and forming an outwardly facing angle ranging between 30 and 100 degrees, preferably between 45 and 80 degrees. A bisector of this angle extends substantially vertically and is vertically aligned with a centerline of the tubular conduit during use of the reflector. The reflector has several longitudinal panel sections extending outwardly and downwardly from the central panel portions.

主权项

1. A radiant tube heater system for heating a covered space in a building or similar structure comprising:
a single tubular cylindrical conduit through which hot fluid including combustion gases flow from one end to another end of the conduit; a plurality of support structures for supporting the conduit at spaced locations along its length; an insulated reflector extending lengthwise along said tubular conduit and constructed and shaped to reflect and disperse radiant heat waves from the conduit, said reflector having a first longitudinal centerline located above a second longitudinal centerline of said conduit, said first longitudinal centerline defining two similar half sections extending in opposite transverse directions from said first longitudinal centerline, each half section including a respective generally planar central portion that slopes upwardly from said first longitudinal centerline during use of the heater system, a second generally planar reflecting portion adjacent to the central portion, a third generally planar reflection portion adjacent to the second portion and a fourth generally planar reflecting portion adjacent to the third portion, the portions being disposed in angled relation to one another such that the central portions define an outwardly facing angle of about 100°, the second portions are disposed at about 126° to the central portions, the third portions are disposed at about 160° to the second portions and the fourth portions are disposed at about 150° to the third portions, and wherein D:D1:D2:D3:D4:D5 is about 40:15:18:28:40:29 D is the outer diameter of the conduit D1 is the distance between the first longitudinal centreline and the junction of the central portion and the second portion D2 is the distance between the junction of the central portion and the second portion and the junction of the second portion and the third portion D3 is the distance between the junction of the second portion and the third portion and the junction of the third portion and the fourth portion D4 is the distance between the junction of the third portion and the fourth portion and the terminus of the fourth portion D5 is the distance between the axis of the conduit and the first longitudinal centreline said tubular conduit extends approximately horizontally during use of the heater system and has lower and upper longitudinal extremities in the horizontal position, said lowermost extremity being aligned with two opposite bottom edges of the reflector and said upper extremity being less than one inch from said first longitudinal centerline; said reflector is made of polished aluminized steel sheet metal or polished Feran; and said reflector is insulated with a layer of ceramic insulation extending over said outer surface.