Modular laundry dryer burner assembly

Abstract

A laundry dryer burner assembly having a burner chamber, a burner, and a rotatable assembly. The burner chamber extends along a longitudinal direction, and the burner is located within the burner chamber and extends along the longitudinal direction. The burner is rotationally fixed relative to the burner chamber. The rotatable assembly is connected to the burner and selectively movable about the longitudinal direction between a first position and a second position. The rotatable assembly has a mixing tube having a mixing tube outlet rotatably connected to the burner and a mixing tube inlet that is offset in a radial direction that is perpendicular to the longitudinal direction from the mixing tube outlet.

1 . A laundry dryer burner assembly comprising:
 a burner chamber extending along a longitudinal direction;   a burner located within the burner chamber and extending along the longitudinal direction, the burner being rotationally fixed relative to the burner chamber; and   a rotatable assembly connected to the burner and selectively movable about the longitudinal direction between a first position and a second position, the rotatable assembly comprising a mixing tube having a mixing tube outlet rotatably connected to the burner and a mixing tube inlet that is offset in a radial direction that is perpendicular to the longitudinal direction from the mixing tube outlet.   
     
     
         2 . The laundry dryer burner assembly of  claim 1 , wherein the mixing tube inlet is located, relative to the radial direction, outside an outer perimeter of the burner chamber. 
     
     
         3 . The laundry dryer burner assembly of  claim 1 , wherein the rotatable assembly further comprises a venturi, the venturi having a venturi outlet connected to the mixing tube inlet, a venturi tube gas inlet, and one or more venturi tube air inlets. 
     
     
         4 . The laundry dryer burner assembly of  claim 3 , wherein the rotatable assembly further comprises a gas valve connected to the venturi tube gas inlet. 
     
     
         5 . The laundry dryer burner assembly of  claim 4 , wherein the mixing tube is bent 180° between the mixing tube inlet and the mixing tube outlet, and at least one of the venturi and the gas valve is at least partially located adjacent an outer wall of the burner chamber, and between an inlet end and an outlet end of the burner chamber with respect to the longitudinal direction. 
     
     
         6 . The laundry dryer burner assembly of  claim 1 , wherein the mixing tube is bent 180° between the mixing tube inlet and the mixing tube outlet. 
     
     
         7 . The laundry dryer burner assembly of  claim 1 , wherein the first position is at least 90° about the longitudinal direction from the second position. 
     
     
         8 . The laundry dryer burner assembly of  claim 1 , wherein the burner comprises a plurality of first flame ports extending along the longitudinal direction on a first lateral side of the burner, and a plurality of second flame ports extending along the longitudinal direction on a second lateral side of the burner, with the first plurality of flame ports and the second plurality of flame ports being at an equal vertical height when the burner is installed in a laundry dryer. 
     
     
         9 . The laundry dryer burner assembly of  claim 1 , wherein the rotatable assembly further comprising an igniter positioned adjacent the burner. 
     
     
         10 . The laundry dryer burner assembly of  claim 9 , wherein the burner comprises one or more first flame ports at a first angular position relative to the longitudinal direction, and one or more second flame ports at a second angular position relative to the longitudinal direction, and the igniter is positioned adjacent at least one of the one or more first flame ports when the rotatable assembly is in the first position, and adjacent at least one of the one or more second flame ports when the rotatable assembly is in the second position. 
     
     
         11 . The laundry dryer burner assembly of  claim 10 , wherein the rotatable assembly further comprises a flame sensor that is positioned adjacent at least one of the one or more first flame ports when the rotatable assembly is in the first position, and adjacent at least one of the one or more second flame ports when the rotatable assembly is in the second position 
     
     
         12 . The laundry dryer burner assembly of  claim 1 , further comprising a connector joining the burner to the burner chamber. 
     
     
         13 . The laundry dryer burner assembly of  claim 12 , wherein the connector is rigidly connected to one of the burner and the burner chamber, and slidingly engaged along the longitudinal direction with the other of the burner and the burner chamber. 
     
     
         14 . The laundry dryer burner assembly of  claim 13 , wherein the connector extends radially between a longitudinal end of the burner opposite the mixing tube and an inner wall of the burner chamber. 
     
     
         15 . The laundry dryer burner assembly of  claim 1 , wherein one of the mixing tube outlet and the burner comprises a radial flange, and the other of the mixing tube outlet and the burner comprises a radial groove, the radial flange being captured in the radial groove to allow relative rotation between the burner and the mixing tube outlet about the longitudinal direction. 
     
     
         16 . A method for installing a laundry dryer burner assembly, the method comprising:
 providing a dryer cabinet assembly with a burner chamber in a fixed position within the cabinet assembly;   providing a laundry dryer burner assembly having a burner and a rotatable assembly comprising a mixing tube rotatably connected to the burner;   rotating the burner relative to the rotatable assembly to orient the burner with a first row of flame ports on a first lateral side of the burner at an equal vertical height with a second row of flame ports on a second lateral side of the burner;   inserting the burner into the burner chamber;   rotationally fixing the burner to the burner chamber; and   connecting the rotatable assembly to a gas supply line.   
     
     
         17 . The method of  claim 16 , wherein the step of rotating the burner relative to the rotatable assembly is performed before the step of inserting the burner into the burner chamber. 
     
     
         18 . The method of  claim 16 , wherein the step of rotating the burner relative to the rotatable assembly is performed after the step of rotationally fixing the burner to the burner chamber. 
     
     
         19 . The method of  claim 16 , further comprising rotationally fixing the rotatable assembly relative to the burner after the step of rotating the burner relative to the rotatable assembly. 
     
     
         20 . The method of  claim 19 , wherein rotationally fixing the rotatable assembly comprises securing the rotatable assembly to the gas supply line.