A warewash machine includes a housing defining a ware inlet, a ware outlet and an internal chamber including a plurality of sequential spray zones including at least one wash zone and a rinse zone downstream of the wash zone in a ware conveyance direction. A vent path leads from the chamber leading to a vent outlet for connecting to a building ventilation system. A damper is provided for controlling a flow area at a location along the vent path. A controller is connected to control a position of the damper, the controller configured to adjust a position of the damper based upon input from at least a first temperature sensor, wherein the first temperature sensor is located at one of (i) the ware inlet, (ii) the ware outlet or (iii) along the vent path. Methods of operating a warewash machine are also provided.

A dishwasher performs a method for providing a notification for replacing a filter. The dishwasher continues to accumulate operation time of an air blowing fan of the dishwasher, and when total accumulative operation time is predetermined time or greater, outputs a notification for replacing a filter through a display or a speaker to determine the timing of the replacement of the filter accurately.

A method includes supplying, using a water supply coupled to a tub of a dishwasher, water into the tub, wherein the tub includes a sump and a sprayer; circulating, using a circulation circuit coupled to the sump and the sprayer, the water from a sump to the sprayer; storing, using a water tank coupled to the circulation circuit, the circulated water from the circulation circuit on completion of a first phase; drawing heat, using a supply side of a thermoelectric module system coupled to the circulation circuit and the water tank, from the stored water in the water tank from the first phase; and outputting, using an output side of the thermoelectric module system, heat to the circulated water in the circulation circuit for a second phase.

An exhaust duct includes a nozzle duct and a cone duct. The nozzle duct includes a first wall forming a first aperture and including a reducing section and an expanding section. The reducing section includes a first edge and a second edge. The expanding section is mounted to the reducing section and includes a third edge and a fourth edge. The reducing section has a circumference that decreases from the first edge to the second edge. The second edge is mounted to the third edge of the expanding section. The expanding section has a circumference that increases from the third edge to the fourth edge. The cone duct includes a second wall forming a second aperture. The nozzle duct is mounted within the second aperture. An air gap is provided between an interior of the second wall and an exterior of the nozzle duct.

A dishwasher includes a housing having walls defining a tub having an outlet for humid air to flow out from the tub, an inlet for dry air to flow into the tub, and a door for closing the tub to an exterior environment, and a drying system contacting at least one wall of the tub. The drying system includes an inlet conduit fluidly connected to the outlet and an outlet conduit fluidly connected to the inlet with the inlet conduit and the outlet conduit forming an inverted V-shaped air circuit defining an airflow path therethrough. The drying system also includes at least one adsorbent component having an adsorbent material positioned along the airflow path, and at least one gate check valve blocking airflow from the tub to the adsorbent material during a wash cycle. The adsorbent material is regenerated via heat transfer through the at least one wall from the tub during a wash cycle when the gate check valve is closed.

A dishwashing appliance may include a cabinet, a tub, a pump, a spray assembly, a fluid recirculation duct, a cold water line, and a fan or a variable-flow restrictor. The tub may define a wash chamber. The pump may be configured to deliver a wash fluid to the wash chamber. The fluid recirculation duct may extend from a path inlet to a path outlet to recirculate air within the wash chamber. The path inlet may be defined in fluid communication between the wash chamber and the path outlet. The path outlet may be defined in fluid communication between the path inlet and the wash chamber downstream from the path inlet. The cold water line may define a cold water nozzle disposed within the fluid recirculation duct to provide a condensing, coldwater flow into the fluid recirculation duct between the path inlet and the path outlet.

A method and dishwasher utilize one or more tubular spray elements that are both rotatable about longitudinal axes thereof and discretely directable by one or more tubular spray element drives between a plurality of rotational positions about the longitudinal axes thereof. Thus, through the provision of discretely directable tubular spray elements, fluid such as wash fluid and/or pressurized air may be focused in a wash tub, in many cases providing more efficient resource usage in the dishwasher.

A dishwashing appliance may include a cabinet, a tub, a pump, a spray assembly, a fluid recirculation duct, a cold water loop, a heat exchanger, and a tub fan. The fluid recirculation duct may extend from a path inlet to a path outlet to recirculate air within a wash chamber. The cold water loop may define a cold water nozzle disposed within the fluid recirculation duct to provide a condensing, cold-water flow into the fluid recirculation duct between the path inlet and the path outlet. The heat exchanger may be mounted to the cold water loop outside of the fluid recirculation duct to cool water within the cold water loop. The tub fan may be configured to selectively motivate an airflow from the path inlet to the path outlet.

A dishwasher includes a dishwasher cavity for treatment of items to be washed, and an air outlet for blowing out air from the dishwasher cavity. The air outlet is arranged in a lower quarter of a height of the dishwasher and extends as a slotted outlet over at least two thirds of a width of the dishwasher. A connection located on a rear face of the air outlet introduces humid air into the air outlet and is designed to supply the introduced air to an air distributor for separating the supplied air into differently oriented sub-flows.

Dishwashing and dish drying apparatus are disclosed. The apparatus comprises three parallel rods which each have a screw thread on an outer surface. In use, the screw thread on each rod engages with a rim or lip of a dish and when the rods are rotated the dish is caused to move through the apparatus. This allows the whole of the dish to be exposed to a liquid in the dishwashing apparatus or to an air flow in a dish drying apparatus.