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.

A desiccant wheel for a dehumidifier includes a band of material around an outer circumference of the desiccant wheel and a plurality of sprocket holes formed in the band of material. The plurality of sprocket holes are configured for coupling the desiccant wheel to a sprocket. The desiccant wheel is configured to rotate when the sprocket is rotated by a motor.

A self-insulating air delivery and recirculation system maintains a desired air temperature of the conditioned air supplied thereinto for delivery to an aircraft. The system uses insulating airflow layers; a parallel layer and a counterflow layer. A starting section connects to a PCA unit and delivers conditioned air therefrom to an interior supply hose. The starting section supplies conditioned insulating air to an interior insulating hose that is annularly outward of the supply hose and in which air flows parallel to airflow in the supply hose. A reversing connector indirectly connects the supply hose to the aircraft and reverses the flow of air from the interior insulating hose to flow back toward the PCA unit in an exterior counterflow hose that is annularly outward of the interior insulating hose and connects at its far end to provide intake airflow to the PCA unit.

A portable dehumidifier includes a plurality of microchannel condenser coils, a fan, and a control panel. The fan is located adjacent to an airflow outlet and is configured to generate an airflow that flows into the portable dehumidifier through an airflow inlet and out of the portable dehumidifier through the airflow outlet. The airflow flows through an evaporator and the plurality of microchannel condenser coils in order to provide dehumidification to the airflow. The control panel includes a status bar that is configured to light up in a plurality of colors to permit an operator to view an operational status of the portable dehumidifier.

A system includes one or more booths and an air moving system coupled to the booths. The booths may each include an enclosure, an interior space that accommodates a person, and one or more openings. The openings are such that a person in the booth can perform operations on a system or object outside the booth. The booth can be moved from one place to another relative to a floor. The air moving system cools air and moves the cooled air through the interior space of the booth.

A self-insulating air delivery system maintains a desired air temperature of the conditioned air supplied thereinto for delivery to an aircraft. The system uses insulating airflow layers; a parallel layer and a counterflow layer. A starting section connects to a PCA unit and delivers conditioned air therefrom to an interior supply hose. The starting section also either creates bleed conditioned air or accepts conditioned insulating air and supplies it to an interior insulating hose that is annularly outward of the supply hose and in which air flows parallel to airflow in the supply hose. A reversing connector indirectly connects the supply hose to the aircraft and reverses the flow of air from the interior insulating hose to flow back toward the PCA unit in an exterior counterflow hose that is annularly outward of the interior insulating hose.

A method of utilizing a mobile climate control assembly to selectively generate air flow across an angular range and at various velocities that includes providing first and second fan blower wheel assemblies each retained in a housing, having a wheel blade member operably coupled to a motor and operably configured to rotate 360 around an axis of rotation, and having an air deflector wall surrounding a partial circumference of the wheel member to direct generated air outwardly from the housing and electronically controlling the motor(s) to independently rotate the wheel members to generate an ambient air velocity gradient along at least an approximate 90 angular traverse path outwardly from the at least one housing without rotating the housing or the air deflector wall of each of the first and second fan blower-wheel assemblies.

A mechanical refrigeration and heating unit supplies filtered air that is heated or chilled as needed for one or more welding helmets. A portable or transportable cabinet or housing has an air inlet on which a cartridge air filter is mounted. The air passes through an evaporator coil into an evaporator plenum where an evaporator fan moves the air to an outlet that connects with a heater plenum that contains an electric heater module. An outlet of the heater if fitted with an outlet port to which an air hose may be connected. A compressor, condenser coil, receiver, and condenser fan are located in an equipment compartment in the housing. A control board in the unit allows the user to select heated or chilled air. A clogged-filter alarm provides visual and audio alarm signals when pressure in the evaporator plenum falls below a threshold.

A portable dehumidifier includes multiple microchannel condenser coils, a fan, a water reservoir, and a bracket. The fan is located adjacent to an airflow outlet and is configured to generate an airflow that flows into the portable dehumidifier through an airflow inlet and out of the portable dehumidifier through the airflow outlet. The airflow flows through an evaporator and the plurality of microchannel condenser coils in order to provide dehumidification to the airflow. The water reservoir is located at least partially below the evaporator and is configured to store water removed from the airflow. The water reservoir includes a top that is at least partially open to capture water falling from the evaporator. The bracket is coupled to a compressor and covers a portion of the open top of the water reservoir in order to prevent the water from spilling when the portable dehumidifier is tilted at an angle.

A water-cooled fan includes a body having an air inlet and an air outlet; a fan unit corresponding to the air inlet or the air outlet; an installation slot placed between the air inlet and the air outlet; and a water supply unit disposed above the installation slot. A method for controlling a multifunctional fan includes configuring a functional space and providing a water supply unit at a top end of the functional space; optionally providing a honeycomb or an air filter unit in the functional space; and when the honeycomb is provided in the functional space, providing, by the water supply unit, dampening water for the honeycomb. The present invention can selectively achieve the effect of air humidification or air purification by using a honeycomb or an air filter unit as needed, and the water-cooled fan of the present invention has high intelligence. A multi-purpose set reduces the cost.