US 12,274,408 B2
Warewashing machine with drain water tempering system
Brian Gambrel, Corbin, KY (US); and Paul Wells, Corbin, KY (US)
Assigned to Jackson WWS, Inc., Barbourville, KY (US)
Filed by Jackson WWS, Inc., Barbourville, KY (US)
Filed on Jan. 21, 2022, as Appl. No. 17/581,102.
Prior Publication US 2023/0233051 A1, Jul. 27, 2023
Int. Cl. A47L 15/42 (2006.01)
CPC A47L 15/4217 (2013.01) [A47L 15/4274 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A warewashing system for dishware with a drain water tempering system, comprising:
a warewashing machine having a housing defining an internal volume, a hot water tank adjacent the internal volume, and an agitation unit;
a drain water fitting having a body defining an interior chamber, a drain water inlet port in fluid communication with a drain of the hot water tank, a drain water outlet port, and a cool water inlet port; and
a drain tempering valve coupled with the cool water inlet port and movable between a closed position in which the drain water tempering valve blocks a fluid flow path into the interior chamber and an open position in which the drain tempering valve opens the fluid flow path, the drain tempering valve including a thermostatic sensor operative about a set point temperature to control the drain tempering valve to the closed position when the thermostatic sensor senses a temperature below the set point and to control the drain tempering valve to the open position when the thermostatic sensor senses a temperature above the set point;
wherein the interior chamber of the drain water fitting defines a top volume portion and a bottom volume portion, the bottom volume portion being disposed below a threshold at which the drain water outlet port intersects the interior chamber of the body, and at least a portion of the thermostatic sensor of the drain tempering valve is disposed within the bottom volume portion of the interior chamber.