Abstract: A portable cooling device for an open air vehicle includes a housing structured to be installed behind an operator. The housing includes a front surface, a rear surface and right and left side surfaces. One or more intakes are positioned on at least of the left and right side surfaces and are structured to enable intake of outside air. One or more exhaust vents are positioned on the rear surface to exhaust heat from the housing. One or more cooling vents are positioned on the front surface. The portable cooling device includes one or more diverters coupled to each cooling vent and structured to convey cooled air from the one or more cooling vents to an area proximate to a head or neck of the operator of the open air vehicle. The housing width is less than about 30 inches and the housing depth is less than about 12 inches.

Abstract: An air cooling system includes a chassis dimensioned to fit between a pair of joists, an evaporator positioned in the chassis and configured to cool air flowing through the chassis, and a diffuser assembly. The diffuser assembly includes one or more positioning guides that toollessly couple the diffuser assembly to the chassis. The diffuser assembly is structured to enable passage of the cool air from the chassis though the diffuser assembly and to a diffuser outlet, and to inhibit formation of condensation caused by the cool air exiting the outlet.

Abstract: An evaporator blower for air conditioning system that can be installed into a ceiling between existing joists. The system has a chassis dimensioned to fit between the pair of joists forms an air flow pathway through which air may be cooled by an evaporator housed in the chassis. A mounting flange is pivotally coupled to the chassis and has an opening through which the chassis can pivot between a first position below the mounting flange, and thus the ceiling, to a second position above the flange, so that the chassis is above the ceiling and between the pair of joists. A diffuser is attached to the mounting flange and provides supply and return air grilles that are in fluid communication with the air flow pathway of the chassis.

Abstract: An evaporator blower for air conditioning system that can be installed into a ceiling between existing joists. The system has a chassis dimensioned to fit between the pair of joists forms an air flow pathway through which air may be cooled by an evaporator housed in the chassis. A mounting flange is pivotally coupled to the chassis and has an opening through which the chassis can pivot between a first position below the mounting flange, and thus the ceiling, to a second position above the flange, so that the chassis is above the ceiling and between the pair of joists. A diffuser is attached to the mounting flange and provides supply and return air grilles that are in fluid communication with the air flow pathway of the chassis.

Abstract: A self-contained air conditioner unit incorporates an energy recovery ventilator portion that brings about several changes of room air per hour with outdoor fresh air. There is an outdoor air intake plenum which furnishes the fresh air and the condenser air for the condenser coil, and a return air plenum. Air from the room return air plenum is HEPA filtered and conducted to the evaporator coil and evaporator fan, and is supplied back into the conditioned space. The energy recovery ventilator has a counterflow heat exchanger core situated between the return air plenum and the fresh air intake plenum, as well as two ventilation fans, one (or both) of which may be of variable or multiple speed. By controlling the fan speeds, it is possible to produce a neutral pressure, a positive or overpressure, or a negative or underpressure in the conditioned space. The unit can be wheeled into place and installed easily by personnel without special training.

Abstract: An air conditioner and filtering unit produces a positive or negative pressure to create an isolation space. A common air intake plenum has first and second inlets for admitting return air from the space or outside air which may be from a building main A/C system supply. Sanitized, cleaned and conditioned air is returned to the conditioned space; and condenser air is exhausted outside the conditioned space. The air intake plenum may be common to both the condenser air flow and to the evaporator air flow. A HEPA filter cleans the air suppled to both the condenser and the evaporator. A slide damper or other arrangement selectively opens and closes air flow through the first and second air inlets into the common intake plenum. This permits creation of overpressure, underpressure, or an intermediate pressure in the conditioned space. All air supplied to the room and all air exhausted from the room is cleaned and sanitized. The unit is self-contained and portable.