US 11,739,987 B2
Dual integrated air heating system
Curtis A. Kallhoff, Sioux Falls, SD (US); Nathan G. Thompson, Harrisburg, SD (US); and Wesley W. Stofferan, Sioux Falls, SD (US)
Assigned to JR Koop, Inc., Sioux Falls, SD (US)
Filed by JR KOOP, INC., Sioux Falls, SD (US)
Filed on Jun. 2, 2020, as Appl. No. 16/890,498.
Prior Publication US 2021/0372670 A1, Dec. 2, 2021
Int. Cl. F24V 40/00 (2018.01); B60H 1/16 (2006.01)
CPC F24V 40/00 (2018.05) [B60H 1/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system comprising:
a common base;
an air heating apparatus mounted on the common base, the air heating apparatus defining a pair of air flow paths, the air heating apparatus comprising:
a housing mounted on the base, the housing forming an outer envelope defining an interior, the air flow paths being separate from each other at all locations in the interior of the outer envelope of the housing, the interior being divided into two subhousings defining two separate subchambers, the housing having an inlet opening extending through the outer envelope for each of the subchambers, the housing having an outlet opening extending through the outer envelope for each of the subchambers, each of the subchambers having a respective one of the air flow paths extending between the inlet opening and the outlet opening of the respective subchamber;
at least two air heating assemblies each configured to heat air moving along a separate one of the air flow paths, the air heating assemblies being positioned in the interior of the housing with each of the air heating assemblies being positioned in a respective one of the subchambers of the subhousings;
wherein the two subhousings define a first said subchamber with a first said air flow path and a second said subchamber with a second said air flow path, the first air flow path being separate from the second air flow path;
wherein the first subchamber has a first said inlet opening and a first said outlet opening for the first air flow path, the second subchamber having a second said subchamber having a second said inlet opening and a second said outlet opening for the second air flow path; and
wherein the first inlet opening and the second inlet opening are separate of each other on the housing.