Radiant tube and convection oven

An oven for heating a coating on a vehicle body conveyed through said oven, comprising:

• an oven wall enclosing a plurality of zones, including a radiant build-up zone having a plurality of radiant tubes extending through said oven receiving heated air from a burner, said radiant tubes each including a first generally linear portion extending generally through said oven below said vehicle body, a generally U-shaped portion adjacent an end of said oven receiving heated air from said first generally linear portion, and a second generally liner portion having a diameter smaller than said first linear portion receiving heated air from said U-shaped portion extending back through said oven below said vehicle body.

A radiant rube and convection oven for heating a coating on a substrate conveyed through said oven, comprising:

• an oven wall enclosing a plurality of zones, including a radiant bring-up zone having a plurality of radiant tubes extending through said oven receiving heated air from a burner, and a convection zone including said radiant tubes and a plurality of nozzles directing heated air at said substrate, said radiant tubes each including a temperature sensor in contact with a surface of said radiant tubes, said sensors connected to a control and said control connected to a burner directing heated air into said radiant tubes, controlling a temperature of said oven.

A radiant tube and convection oven for heating a coating on vehicle bodies having open windows conveyed through said oven, comprising:

• an oven wall enclosing a plurality of zones, including a radiant bring-up zone having a plurality of radiant tubes extending through said oven receiving heated air from a burner and shields located generally between said radiant tubes and said substrate, and a convection zone including said radiant tubes and a plurality of nozzles located opposite said open windows directing heated air into said open windows of said vehicle body.

A radiant tube and convection oven for heating a coating on a substrate conveyed through said oven, comprising:

• an oven wall enclosing a plurality of zones, including a radiant bring-up zone having a plurality of radiant tubes extending through said oven receiving heated air from a burner and shields located generally between said radiant tubes and said substrate, and a convection bring-up zone including heat chambers on opposed sides of said oven wall and nozzles located on a wall of said heat chambers opposite said substrate directing heated air at said substrate.

An oven for heating a coating on a substrate conveyed through said oven, comprising:

• an oven wall enclosing a plurality of zones, including a radiant bring-up zone having a plurality of radiant tubes extending through said oven receiving heated air from a burner, said radiant tubes including a first generally linear portion extending generally through said oven, a generally U-shaped portion receiving heated air from said first generally linear portion, and a second generally linear portion receiving heated air from said U-shaped portion extending back through said oven, each of said radiant tubes including a temperature sensor in contact with a surface of said radiant tubes, said temperature sensor connected to a control and a control connected to a burner directing heated air into said radiant tubes, controlling a temperature of said oven.