Disclosed herein is an artificial intelligence device. An an artificial intelligence device according to an embodiment of the present invention includes a communication unit that obtains an external environmental factor and an internal environmental factor collected by a sensor and a processor that provides the internal environmental factors to an environmental factor prediction model to predict a subsequent internal environmental factor and allows a ventilation system and an air cleaning system to operate cooperatively with each other based on the predicted internal environmental factor.

A programmable thermostat having an indoor air quality sensor, where the programmable sensor is configured to control a building's air handling system, is disclosed. The programmable thermostat continuously monitors the air quality of the indoor environment and determines if the measurements of the indoor air quality has surpassed previously selected, user-specified air quality thresholds which indicates the presence of excessive indoor air contaminants. When excessive indoor air contaminants are detected, the programmable thermostat activates the building's air handling system to purify the indoor air quality. The air may be purified by one or more techniques such as by activating the ventilation to force indoor air through a filter, or by opening fresh air dampers to allow outdoor air to enter the indoor environment and dilute the air contaminants, or by activating other air purification devices such as UV light air purifiers or ionizers.

A heating and cooling system or temperature control system is disclosed herein that generally stores very hot air and very cold air, and selectively disperses or releases the hot or cold air using a control assembly.

A heating and cooling system or temperature control system is disclosed herein that generally stores very hot air and very cold air, and selectively disperses or releases the hot or cold air using a control assembly.

A heating and cooling system or temperature control system is disclosed herein that generally stores very hot air and very cold air, and selectively disperses or releases the hot or cold air using a control assembly.

A heating and cooling system or temperature control system is disclosed herein that generally stores very hot air and very cold air, and selectively disperses or releases the hot or cold air using a control assembly.

A normobaric hypoxia trainer including a training chamber, an intake fan for allowing ground level air to be introduced into the training chamber; an exhaust fan for removing air from the training chamber; a plurality of circulation fans for mixing interior air of the training chamber to create a uniform oxygen concentration within the training chamber; a nitrogen generation system, the nitrogen generating system including a plurality of polysulphone membrane cartridges for separating out nitrogen from air; a compressor for supplying compressed air to the nitrogen generation system; a pressure regulator for regulating the pressure of the compressed air; a heater for controlling temperature of the compressed air, the heated pressure regulated compressed air passing through the polysulphone membrane cartridges such that nitrogen can be separated out from the air; and, a flow controller for controlling flow rate of the separated nitrogen into the training chamber.

A door for an air cleaner housing is disclosed. The door comprises a baseplate having a first side and a second side, a gasket attached to the first side of the baseplate, a backplate connected to the second side of the baseplate, and a front plate spaced apart from the backplate by spacers, wherein the baseplate, the backplate and the front plate are attached by a plurality of fasteners. Slots may be formed in the baseplate, and a magnet is positioned in each of the slots. The baseplate, the backplate, and the gasket dimensions may be adapted to fit within an opening in an air-cleaner housing. The magnets may be positioned to hold the door in position the housing opening. The gasket comprises a cellular urethane that seals the door to the housing to prevent air leaks.

A module air curtain and recirculation system that can be incorporated into various tables and workstations that provides 1) an effective air curtain between individuals, 2) a reduction of harmful viruses and 3) the ability for two or more people to be in close proximity without having to wear personal protective equipment such as face masks.

An air purifier (100) includes a detection unit (130) and a control unit (110). The detection unit (130) periodically detects environment information. The environment information indicates information relating to an environment around the air purifier (100). The control unit (110) determines whether or not the environment information satisfies a specific condition a plurality of times during the specific time period (Ts) corresponding to an event within a prescribed period (Ta). In a case where the control unit (110) determines that the environment information satisfies the specific condition a plurality of times, the control unit switches a mode from a learning mode to an implementation mode. In the implementation mode, in a case where the environment information meets a trigger during the specific time period, the control unit (110) performs event operational control.