Abstract: A laundry treatment appliance includes a cabinet; a drum rotatably mounted within the cabinet; a sealed system; a duct system; a blower fan capable of operating at variable rotational speeds; and a controller configured to perform an operation. The operation includes directing the blower fan at a preliminary rotational speed; determining a condensation capacity of the sealed system with regards to the process air in the duct system; determining a mass flow rate of moisture in the process air while directing the blower fan at the preliminary rotational speed; determining a target rotational speed of the blower fan corresponding to a set ratio of the determined condensation capacity to the determined mass flow rate; and directing the blower fan at the determined target rotational speed.

Abstract: A method of operating a laundry treatment appliance includes initiating a drying cycle, the drying cycle including a first goal value of a moisture goal of a laundry load; initiating a sensing process, the sensing process including measuring, via the moisture sensor, a first moisture level within a first predetermined time interval; determining that the first moisture level is above the first goal value within the first predetermined time interval; measuring, as part of the sensing process via the moisture sensor, a second moisture level within a second predetermined time interval subsequent to the first predetermined time interval; determining the second moisture level is greater than the first moisture level; and setting the moisture goal based on determining that the second moisture level is greater than the first moisture level.

Abstract: A laundry appliance uses a determination of a frequency of compressor temperature response, refrigerant mass flow rate, or both to determine accumulation of lint in a filter. Based on the determination, various corrective actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof.

Abstract: A method of operating a dryer appliance includes activating a heating system of the dryer appliance and tracking an energy output of the heating system. The method also includes determining a load score of a load of articles to be dried in the dryer appliance based on the tracked energy output and determining a termination criterion for a dry operation of the dryer appliance based on the load score. The method further includes performing the dry operation in the dryer appliance and terminating the dry operation when the determined termination criterion is reached.

Abstract: Dryer appliances and related methods are disclosed. Such methods may include, or such appliances may be configured for, monitoring a temperature with a thermistor of a primary heat control system of the dryer appliance. The present disclosure also includes determining a relay signal is calling to close a relay and thereby activate a heating system of the dryer appliance and verifying that the relay is closed. The present disclosure further includes allowing a minimum relay on time to elapse after verifying that the relay is closed. The present disclosure also includes determining a temperature gradient of the monitored temperature based on a change in the monitored temperature over the minimum relay on time. The present disclosure further includes detecting a nuisance trip because the determined temperature gradient is negative.

Abstract: A laundry appliance uses a determination of volumetric airflow rate after a steady state condition is reached to determine the accumulation of lint in filter. Based on the determination, various actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof. One or more temperature sensors, relative humidity sensors, and weight sensors are used to provide measurements for determining the volumetric airflow rate.

Abstract: A laundry appliance is configured for and/or methods of operating a laundry appliance include determining a load size of articles to be dried in the laundry appliance and determining a load type of the articles to be dried in the laundry appliance. A termination criterion for a dry operation of the laundry appliance is determined based on the load size and the load type. The laundry appliance is further configured for and/or the method further includes performing the dry operation in the laundry appliance. The dry operation is terminated when the termination criterion is reached.

Abstract: A laundry appliance uses a determination of a frequency of compressor temperature response, refrigerant mass flow rate, or both to determine accumulation of lint in a filter. Based on the determination, various corrective actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof.

Abstract: A laundry appliance uses a determination of volumetric airflow rate after a steady state condition is reached to determine the accumulation of lint in filter. Based on the determination, various actions can be taken including notifying the user, shutting off the appliance, initiating an automatic cleaning sequence for one or more lint filters, and combinations thereof. One or more temperature sensors, relative humidity sensors, and weight sensors are used to provide measurements for determining the volumetric airflow rate.

Abstract: A method for operating a dryer appliance includes obtaining an initial operating temperature, obtaining a first temperature set point and a second temperature set point lower than the first temperature set point, wherein the first temperature set point and the second temperature set point are based at least in part on the initial operating temperature, operating the dryer appliance at the initial operating temperature, determining that a restriction level within the dryer appliance exceeds a restriction threshold, and operating the dryer appliance at the first temperature set point, lower than the initial operating temperature, upon determining that the restriction level exceeds the restriction threshold.

Abstract: A dryer appliance operable to detect an extreme thermal event therein and related methods of detecting an extreme thermal event are provided. The dryer appliance includes a cabinet, a drum rotatably mounted within the cabinet, a heating system upstream of the drum, and an outlet duct downstream of the drum. The method includes and/or the dryer is configured for monitoring an outlet temperature, determining a temperature gradient of the monitored outlet temperature, and detecting the extreme thermal event based on the determined temperature gradient.

Abstract: Dryer appliances and related methods are disclosed. Such methods may include, or such appliances may be configured for, monitoring a temperature with a thermistor of a primary heat control system of the dryer appliance. The present disclosure also includes determining a relay signal is calling to close a relay and thereby activate a heating system of the dryer appliance and verifying that the relay is closed. The present disclosure further includes allowing a minimum relay on time to elapse after verifying that the relay is closed. The present disclosure also includes determining a temperature gradient of the monitored temperature based on a change in the monitored temperature over the minimum relay on time. The present disclosure further includes detecting a nuisance trip because the determined temperature gradient is negative.

Abstract: A method for operating a dryer appliance includes obtaining an initial operating temperature, obtaining a first temperature set point and a second temperature set point lower than the first temperature set point, wherein the first temperature set point and the second temperature set point are based at least in part on the initial operating temperature, operating the dryer appliance at the initial operating temperature, determining that a restriction level within the dryer appliance exceeds a restriction threshold, and operating the dryer appliance at the first temperature set point, lower than the initial operating temperature, upon determining that the restriction level exceeds the restriction threshold.

Abstract: A dryer appliance includes a cabinet. A drum is disposed within the cabinet. The drum is mounted such that the drum is fixed relative to the cabinet. The drum defines a length between a first end portion of the drum and a second end portion of the drum. The dryer appliance also includes an air duct and a fan. The air duct is coupled to the fan. The air duct has an outlet positioned at a bottom portion of the drum. The fan is operable to urge a flow of air through the air duct and into the drum at the outlet of the air duct.

Abstract: A dryer appliance includes a cabinet. A drum is disposed within the cabinet. The drum is mounted such that the drum is fixed relative to the cabinet. The drum defines a length between a first end portion of the drum and a second end portion of the drum. The dryer appliance also includes an air duct and a fan. The air duct is coupled to the fan. The air duct has an outlet positioned at a bottom portion of the drum. The fan is operable to urge a flow of air through the air duct and into the drum at the outlet of the air duct.

Abstract: A filter system for a dryer appliance includes a front housing, a rear housing, the rear housing including two guards that define an opening, a pivotable perforated grille connected to the rear housing and pivotable between a closed position and an open position, at least a portion of the perforated grille covering the opening when it is in the closed position, and a filter removably mounted between the front housing and the rear housing, the filter being removable when the perforated grille is in the open position.

Abstract: A filter system for a dryer appliance includes a front housing, a rear housing, the rear housing including two guards that define an opening, a pivotable perforated grille connected to the rear housing and pivotable between a closed position and an open position, at least a portion of the perforated grille covering the opening when it is in the closed position, and a filter removably mounted between the front housing and the rear housing, the filter being removable when the perforated grille is in the open position.

Abstract: A dryer appliance and a method of detecting a moisture content of clothes in the dryer appliance are provided. The dryer appliance includes a top bearing positioned proximate a front of a rotating drum and temperature and humidity sensors positioned behind the top bearing for measuring a chamber temperature and humidity as well as a temperature sensor for measuring the exhaust temperature. A controller implements a method of detecting the moisture content of clothes within the drum by obtaining the chamber and exhaust temperatures and the chamber humidity, estimating the moisture content using these values, and adjusting at least one operating parameter of the dryer appliance in response to the estimated moisture content of the clothes.

Abstract: Dryer appliances, including methods of operation, are provided herein. The dryer appliance may include a cabinet, a drum, a ventilation assembly, an air handler, and a controller. The drum may be rotatably mounted within the cabinet. The drum may define a drying chamber. A ventilation assembly may be attached to the drying chamber. The ventilation assembly may 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 defined through the cabinet. The air handler may be attached to the conduit in fluid communication with the drying chamber to draw air through the exhaust passage. The controller may be in operable communication with the air handler and the drum, and may be configured to initiate a dry cycle.

Abstract: A dryer appliance and a method of detecting a moisture content of clothes in the dryer appliance are provided. The dryer appliance includes a top bearing positioned proximate a front of a rotating drum and temperature and humidity sensors positioned behind the top bearing for measuring a chamber temperature and humidity as well as a temperature sensor for measuring the exhaust temperature. A controller implements a method of detecting the moisture content of clothes within the drum by obtaining the chamber and exhaust temperatures and the chamber humidity, estimating the moisture content using these values, and adjusting at least one operating parameter of the dryer appliance in response to the estimated moisture content of the clothes.