An improved cover for covering and sealing an air conditioning unit that is otherwise exposed to the room in which it is installed. The cover is easily mounted to or removed from the wall or surface from which the air conditioner projects and in the preferred embodiment is made from a fabric that is also easily cleaned and stored when not in use. Around the periphery of the cover's open end is a flange to which one element of a separable fastening system is affixed; the other element of the fastening system may have an integral adhesive backing and can be easily installed on the wall or surface. Mating the separable elements of the fastening system seals the enveloped air conditioner and its sleeve from air, noise and bug or insect infiltration. Other alternative embodiments and fastening methods are disclosed for an improved cover that is easy to install, remove, clean and store.

A multi-compartment negative air filtration system and a method of operating a multi-compartment negative air filtration system are provided. The multi-compartment negative air filtration system includes a housing including a first compartment and a second compartment. The first compartment and the second compartment separated by at least one panel member. Each of the first compartment and the second compartment including an inlet, an outlet, a pre-filter disposed downstream of the inlet, a HEPA filter disposed downstream of the pre-filter, an a fan assembly disposed downstream of the HEPA filter, the fan assembly in airflow communication with the pre-filter and the HEPA filter, the fan assembly generating a negative pressure across the pre-filter and the HEPA filter.

A system for controlling the flow of air through ductwork includes a foldably tensioned boot loadable air damper device and a method of installing same. The damper device includes an actuator having a retractable member and a pivoting member, wherein the pivoting member is operatively connected to the retractable member of the actuator. The damper device also includes at least one support base supporting the actuator and the pivoting member with respect to each other, a foldable damper blade attached to the pivoting member, and at least one tensioned hinge member operatively connected to the foldable damper blade for unfolding the damper blade. The damper device may be inserted through a register boot and into a ductwork when folded.

A frame segment for a frame of a heating, ventilation, and/or air conditioning (HVAC) system includes a protrusion formed on an interior side of the frame segment and configured to engage with a first panel of the HVAC system, a first recess formed at an exterior side, opposite the interior side, of the frame segment, and a second recess formed at the exterior side of the frame segment. The first recess is configured to receive a second panel of the HVAC system, and the second recess is configured to receive a third panel of the HVAC system.

A suction device including a funnel including an opening at an end and a base at an opposite end, wherein a diameter of the opening is wider than a diameter of the base; a tube; and a suction motor, wherein a first end of the tube is coupled to the base of the funnel via a connector and a second end of the tube is coupled to the suction motor, and wherein the suction motor is configured to generate a suction force that pulls aerosols from surrounding environment into the opening of the funnel and through the tube and into a collection reservoir for disposal.

A portable air cooler is fashioned as a storage chest for ice cubes, dry ice, or other pre-chilled articles such as reusable freezable blocks. Sidewalls of the chest include air intakes, and a baffle forces intake air to pass by or through the chilled articles to that the air is cooled by heat exchange. Fans in the chest lid exhaust the cooled air, which may be used to cool waste heat from a heat-producing device lain atop the chest. The lid also includes stand-offs to allow airflow under the device being cooled, and guardrails help maintain the device in position over the fans providing cooling air and prevent the device from being casually knocked off the top of the lid of the chest.

An air conditioner may include a casing having an inner air flow space defined therein and an entrance defined in one of a first side plate or a second side plate, a heat exchanger and a fan disposed between an outdoor air inlet body and an air outlet body in an air flow direction of the casing, a heater module inserted through the entrance into the inner air flow space, a handle mounted on one side face among both side faces of the heater module, one side face of the both side faces being closer to the entrance than the other side face thereof, a pair of guide brackets installed in the casing to slidably guide the heater module, and a door module that opens and closes the entrance. The door module may be configured to contact the handle to press the handle in a direction away from the entrance.

A portable humidifier and a method of using the same. The portable humidifier has a frame; a fluid droplet generator on the frame; and a fluid containment unit for a supply of fluid. The fluid droplet generator is operable to cause fluid droplets generated from fluid from the supply in the fluid containment unit to become entrained in environmental air in a space in which the portable humidifier is located. The fluid containment unit has a wall structure that is selectively reconfigurable to occupy different surrounding volumes.

An air cleaning system having at least one dust sensor and a method for controlling the air cleaning system may improve accuracy of dust sensors through linkage control of the dust sensors, and may normally operate a faulty air cleaner using dust sensors of the remaining communicating air cleaners other than the faulty air cleaner even when any one of the dust sensors fails to operate. The air cleaning system may select a master dust sensor through linkage control of the dust sensors, and may operate the plurality of air cleaners only using sensor information of the master dust sensor. Therefore, the air cleaning system may stop operation of the remaining dust sensors other than the master dust sensor, may reduce measurement noise produced by the dust sensors and power consumption, and may increase a lifetime of the dust sensors.

Provided are an air purifier and a method of controlling the same. Specifically, there are provided an air purifier including a plurality of air purification modules (10), wherein each of the plurality of air purification modules (10) includes: a blowing fan (100); a flow path dividing portion (200) on which the blowing fan (100) is rotatably mounted; a flow path portion (300) including a first flow path portion (310) located at one side of the flow path dividing portion (200) and a second flow path portion (320) located at the other side opposite the blowing fan (100) with respect to the one side of the flow path dividing portion (200); and a housing (400) accommodating the blowing fan (100), the flow path dividing portion (200), and the flow path portion (300) therein, wherein the housing (400) includes a first opening (410) located at one side of the housing (400) and providing a passage through which the first flow path portion (310) is connected in fluid communication with an outside of the housing (400) and a second opening (420) located at the other side of the housing (400) and providing a passage through which the second flow path portion (320) is connected in fluid communication with the outside of the housing (400), and the first flow path portion (310) includes a first flow path opening/closing portion (312) located at one side opposite to the blowing fan (100), and the second flow path portion (320) includes a second flow path opening/closing portion (322) located at one side opposite to the blowing fan (100), and the first flow path opening/closing portion (312) is located between a first open position in which the first opening (410) is opened, and a first closing position in which the first opening (410) is closed, and the second flow path opening/closing portion (322) is located between a second open position in which the second opening (420) is opened, and a second closing position in which the second opening (420) is closed, and the first flow path opening/closing portion (312) and the second flow path opening/closing portion (322) of each of the plurality of air purification modules (10) are operated independently, and a method of controlling the same.