A dryer appliance is provided, including a cabinet, a drum, an outlet assembly, an exhaust sensor, and a fluid injector. The drum may be mounted within the cabinet and define a drying chamber. The outlet assembly may be attached to the drying chamber and include a conduit defining an exhaust passage in fluid communication with the drying chamber. The conduit may extend from an inlet at the drying chamber to an outlet. The conduit may further define an access port along the exhaust passage between the inlet and the outlet. The exhaust sensor may be disposed in communication with the exhaust passage. The fluid injector may be attached to the conduit between the inlet and the outlet, and be directed at the access port.

A dryer appliance is provided, including a cabinet, a drum, an outlet assembly, an exhaust sensor, and a fluid injector. The drum may be mounted within the cabinet and define a drying chamber. The outlet assembly may be attached to the drying chamber and include a conduit defining an exhaust passage in fluid communication with the drying chamber. The conduit may extend from an inlet at the drying chamber to an outlet. The conduit may further define an access port along the exhaust passage between the inlet and the outlet. The exhaust sensor may be disposed in communication with the exhaust passage. The fluid injector may be attached to the conduit between the inlet and the outlet, and be directed at the access port.

A clothes dryer has a heat exchanger supplied with heat energy from a building's central heating system, or external heat generation units including district heating systems. Air is drawn by a fan axially through the heat exchanger, and back into it at a location so that it diffuses through the exchanger to mix with freshly-drawn-in air before being delivered upwardly into a drum inlet manifold. The drum inlet manifold also had an electrical element for use when hot water is not available. The fan is between the heat exchanger and the drum inlet manifold, and blows into the manifold, helping to prevent fluff-build-up on an electrical element in the drum inlet manifold, with consequent reduced fire risk. The heat exchange assembly is compact, beneath the drum inlet manifold, and is driven by the same drive as the drum. This allows the dryer to be as compact as a conventional household with only an electrical element heat source.

A clothes dryer has a heat exchanger supplied with heat energy from a building's central heating system, or external heat generation units including district heating systems. Air is drawn by a fan axially through the heat exchanger, and back into it at a location so that it diffuses through the exchanger to mix with freshly-drawn-in air before being delivered upwardly into a drum inlet manifold. The drum inlet manifold also had an electrical element for use when hot water is not available. The fan is between the heat exchanger and the drum inlet manifold, and blows into the manifold, helping to prevent fluff-build-up on an electrical element in the drum inlet manifold, with consequent reduced fire risk. The heat exchange assembly is compact, beneath the drum inlet manifold, and is driven by the same drive as the drum. This allows the dryer to be as compact as a conventional household with only an electrical element heat source.

A drum washing machine having an improved air circulation structure thereof. The drum washing machine includes a cabinet, a tub arranged within the cabinet, a drum rotatably arranged within the tub, a drying unit which heats and circulates air discharged from the tub so as to dry laundry within the drum, the drying unit including a drying duct equipped with a heater to heat air therein, a circulation passage provided such that air circulates between the tub and the inside of the drying duct, and a suction member which is coupled to one side of the drying duct and introduces air outside the tub onto the circulation passage, and a discharge member which is coupled to one side of the tub and discharges part of the air in the circulation passage to the outside of the cabinet.

A drum washing machine having an improved air circulation structure thereof. The drum washing machine includes a cabinet, a tub arranged within the cabinet, a drum rotatably arranged within the tub, a drying unit which heats and circulates air discharged from the tub so as to dry laundry within the drum, the drying unit including a drying duct equipped with a heater to heat air therein, a circulation passage provided such that air circulates between the tub and the inside of the drying duct, and a suction member which is coupled to one side of the drying duct and introduces air outside the tub onto the circulation passage, and a discharge member which is coupled to one side of the tub and discharges part of the air in the circulation passage to the outside of the cabinet.

A method for controlling an exhaust type clothes dryer may include measuring humidity of air passing through an interior of the drum to sense a degree of dryness of a target item, and discharging air that has passed through the drum or recirculating at least a portion of air that has passed through the drum to the drum by comparing a degree of dryness of the target item with a predetermined reference value. In the recirculating of air, an amount of recirculated air may be increased according to an increase in the degree of dryness of the target item by adjusting a degree of opening of a recirculation channel.

A domestic clothes dryer comprises a rotating drum defining a drying chamber, an air inlet upstream the drum and at least a hollow lifter mounted in the drum, wherein said hollow lifter is in communication with the air inlet for distributing air inside the drum through a plurality of openings. The air inlet comprises a shaped air plenum chamber facing a lower portion of a rear perforated wall of the drum and capable of delivering air to said lifter and/or directly to the drum through said rear perforated wall.

A laundry treating apparatus include: a cabinet; a tub disposed in the cabinet; a drum rotatably disposed in the tub, and having a cylindrical portion formed of a ferromagnetic material and a rear wall portion for closing an open rear end of the cylindrical portion, wherein the cylindrical portion has a plurality of through-holes formed therein and allows laundry to be loaded thereinto through an opening portion formed on a front surface; an induction heater disposed in the tub and configured to heat the drum by inducing an eddy current in the cylindrical portion; a duct disposed on an outer side of the tub, having an inlet communicating with an open front surface of the cylindrical portion, and an outlet communicating with the tub through a side surface of the tub surrounding the cylindrical portion; and an air blower configured to suction air, discharged from the drum, into the inlet.

A laundry processing apparatus include a washing unit provided in an installation space of a cabinet, which corresponds to an upper portion of a heat exchanger and has the installation space therein, to spray washing water to a front surface of an evaporator. The washing unit has a nozzle part provided at the upper portion of the heat exchanger in an inclined direction to guide the washing water toward the heat exchanger and a front guide part provided at an opposite side of the nozzle part while being space apart therefrom, with the front surface of the evaporator that is the heat exchanger interposed between the front guide part, guiding the washing water discharged from the nozzle part toward the front surface of the evaporator.