Abstract: A portable dehumidifier includes a cabinet, a fan, a dehumidification system, and a compressor. The cabinet includes a front side and a back side opposite the front side, an airflow inlet located on a first side of the cabinet, and an airflow outlet located on a second side of the cabinet that is opposite the first side. The dehumidification system includes a secondary evaporator located proximate to the airflow inlet, a primary condenser located proximate to the airflow outlet, a primary evaporator located adjacent to the secondary evaporator, a secondary condenser located between the primary evaporator and the primary condenser, and a compressor. The fan is configured to generate an airflow that flows into the cabinet through the airflow inlet and out of the cabinet through the airflow outlet. The airflow flows through the dehumidification system in order to provide dehumidification to the airflow.

Abstract: A dehumidifier includes an evaporator, a condenser, a fan, and a processor. In response to determining that a measured relative humidity is greater than or equal to a relative humidity set point, the processor sets the dehumidifier to a first operating mode, wherein a compressor is enabled and the fan is set to a first fan speed while in the first operating mode. The processor further determines whether the dehumidifier has been operating in the first operating mode for a predetermined amount of time, and in response, sets the dehumidifier to a second operating mode if the measured relative humidity is still greater than the relative humidity set point, wherein the compressor is enabled and the fan is set to a second fan speed while in the second operating mode. The second fan speed is greater than the first fan speed.

Abstract: A portable dehumidifier includes a cabinet, an evaporator, a condenser, a drain pan, multiple support legs, a compressor, and a fan. The cabinet includes an airflow inlet, an airflow outlet, and at least two wheels. The evaporator is located adjacent to the airflow inlet. The condenser is located adjacent to the evaporator and on a side of the evaporator opposite the airflow inlet. The drain pan is located at least partially below the evaporator and the condenser. The support legs extend from a bottom side of the drain pan towards the bottom side of the cabinet. The compressor is located below the drain pan. The fan is located adjacent to the condenser and on a side of the condenser opposite the evaporator.

Abstract: A portable dehumidifier includes a cabinet, an evaporator, a condenser, a drain pan, multiple support legs, a compressor, and a fan. The cabinet includes an airflow inlet, an airflow outlet, and at least two wheels. The evaporator is located adjacent to the airflow inlet. The condenser is located adjacent to the evaporator and on a side of the evaporator opposite the airflow inlet. The drain pan is located at least partially below the evaporator and the condenser. The support legs extend from a bottom side of the drain pan towards the bottom side of the cabinet. The compressor is located below the drain pan. The fan is located adjacent to the condenser and on a side of the condenser opposite the evaporator.

Abstract: A dehumidifier includes an evaporator, a condenser, a fan, and a processor. In response to determining that a measured relative humidity is greater than or equal to a relative humidity set point, the processor sets the dehumidifier to a first operating mode, wherein a compressor is enabled and the fan is set to a first fan speed while in the first operating mode. The processor further determines whether the dehumidifier has been operating in the first operating mode for a predetermined amount of time, and in response, sets the dehumidifier to a second operating mode if the measured relative humidity is still greater than the relative humidity set point, wherein the compressor is enabled and the fan is set to a second fan speed while in the second operating mode. The second fan speed is greater than the first fan speed.

Abstract: A portable dehumidifier includes a cabinet, a fan, a dehumidification system, and a compressor. The cabinet includes a front side and a back side opposite the front side, an airflow inlet located on a first side of the cabinet, and an airflow outlet located on a second side of the cabinet that is opposite the first side. The dehumidification system includes a secondary evaporator located proximate to the airflow inlet, a primary condenser located proximate to the airflow outlet, a primary evaporator located adjacent to the secondary evaporator, a secondary condenser located between the primary evaporator and the primary condenser, and a compressor. The fan is configured to generate an airflow that flows into the cabinet through the airflow inlet and out of the cabinet through the airflow outlet. The airflow flows through the dehumidification system in order to provide dehumidification to the airflow.

Abstract: Acoustic feedback in digital signal processing hearing aids is suppressed by using signal processing techniques in the digital processor. A first processing technique causes the data to the main signal processing path in the digital signal processor to be delayed by varying amounts over time, preferably in a periodic manner, to disrupt the buildup of feedback resonances. In a second technique, a digital filter receives the input data and has its coefficients adjusted so that the output of the filter is substantially an optimal estimate of the current input sample based on past input samples. The output of the filter is then subtracted from the input signal data to provide difference signal data which substantially cancels out the resonant frequencies. In a third technique, the acoustic feedback path from the output to the input of the hearing aid is modeled in the digital signal processor as a delay and a linear filter.