An air treatment device includes: a casing having an inlet through which air is drawn, and an outlet out of which the air drawn through the inlet is blown; a blade configured to adjust a direction of the air blown out of the outlet; and a generator configured to generate an antimicrobial element that sanitizes the blade. The blade has a first surface, and a second surface opposite to the first surface. The blade is shiftable between a first position in which the antimicrobial element is provided to the first surface and a second position in which the antimicrobial element is provided to the second surface.

Provided is an air conditioner including a variable air volume control device. The air conditioner includes: an indoor unit main body including a main outlet through which air is discharged; a blower placed in the indoor unit main body and blowing air toward the main outlet; and a controller adjusting a second discharge rate of air in an air cleaning mode independently of a first discharge rate of air in a heating or cooling mode, wherein the second discharge rate of air is varied within a range different from a range in which the first discharge rate of air is varied.

A heat pump including a refrigerant circuit configured to circulate flammable refrigerant, and an indoor unit configured to be arranged in an indoor space. The refrigerant circuit has a compressor, a utilisation-side heat exchanger, an expansion device and a heat-source-side heat exchanger connected by piping. The an indoor unit includes an outer casing having a top, and a sealed container accommodated in the outer casing. The sealed container has a bottom and a top and accommodates at least one of the compressor, the utilisation-side heat exchanger, the expansion device, and the heat-source-side heat exchanger. The sealed container has a release opening to exhaust leaking refrigerant to an exterior of the outer casing of the indoor unit.

A temperature control (“TC”) unit and associated method for providing simultaneous independent temperature control of conditioned air to first and second rooms. The TC unit includes a cabinet. The cabinet may be divided into first and second compartments, the first compartment being adapted to receive and exhaust air from and to, respectively, the first room, and the second compartment being adapted to receive and exhaust air from and to, respectively, the second room. Sound dampening insulation may be positioned between the first and second compartments. First and second evaporators may be positioned within the cabinet so that: air from the first room passes through the first evaporator before exhausting back to the first room; and air from the second room passes through the second evaporator before exhausting back to the second room. The TC unit may be or include a vertical terminal air conditioning (“VTAC”) unit.

A temperature control (“TC”) unit and associated method for providing simultaneous independent temperature control of conditioned air to first and second rooms. The TC unit includes a cabinet. The cabinet may be divided into first and second compartments, the first compartment being adapted to receive and exhaust air from and to, respectively, the first room, and the second compartment being adapted to receive and exhaust air from and to, respectively, the second room. Sound dampening insulation may be positioned between the first and second compartments. First and second evaporators may be positioned within the cabinet so that: air from the first room passes through the first evaporator before exhausting back to the first room; and air from the second room passes through the second evaporator before exhausting back to the second room. The TC unit may be or include a vertical terminal air conditioning (“VTAC”) unit.

An air conditioning indoor unit includes a body, a panel, and a horizontal flap. The body is provided with an air outlet. The panel is positioned to cover the front of the body. The horizontal flap is able to vary the air direction of conditioned air blown out from the air outlet. A recess recessed toward the back side of the air conditioning indoor unit is disposed between an upper edge of an open peripheral edge of the air outlet and a lower end of the panel. During non-operation, the recess and the air outlet are covered by the horizontal flap.

Systems and methods for autotuning a HVAC system controller. The method may include receiving a performance coefficient and providing a step-input using an autotuner relay to measure ultimate gain and ultimate period in a controlled HVAC system. The method may also include adjusting the ultimate gain and ultimate period to account for a relay hysteresis, and applying a tuning rule to derive a proportional gain and an integral time for a controller of the HVAC system control loop. The method may further include updating the controller with the proportional gain and integral time, and verifying the proportional gain and integral time. Verifying the proportional gain and integral time may include setting a performance envelope having a tightness related to the performance coefficient, applying a step-input to provoke a closed-loop response, and comparing the closed loop response with the performance envelope to determine whether the closed-loop response is within the envelope.

A window air conditioner includes a casing including a cabinet. The cabinet includes a receiving groove formed at an outer peripheral wall of the cabinet. The receiving groove is recessed downwards to separate the cabinet into an indoor part and an outdoor part. The window air conditioner further includes an indoor heat exchanger and an indoor fan arranged in the indoor part, and an outdoor heat exchanger and a compressor arranged in the outdoor part.

A portable environment control system is configured to condition the air within an enclosure, such as by heating, cooling, humidifying or dehumidifying. The portable environmental control system has a conduit that is attached at one end to an environment control device and attached at the opposing outlet end to a partition coupling. The partition coupling is configured over an opening in a partition, such as an exterior wall of a recreation vehicle. Airflow from the environment control device is configured to flow through the conduit and through the partition coupling to an enclosure. The portable environment control system is quick and easy to install and allows for closure of an opening in a partition with a flange cover. The portable environment control system may have an inlet and outlet conduit to provide air flow to and draw air flow from an enclosure, respectively.

A clamp for securing an air conditioning unit in a window without the need for any modification and/or damage to the air conditioning unit or window. The clamp includes a plurality of planar members forming two oppositely facing channels. A first channel engages the air conditioning unit rail while a second channel engages the window sash of the window. The clamp further includes two fasteners to abut the window sash and the air conditioning unit rail. The clamp therefore prevents the window from being opened and the air conditioning unit from being pushed through the window.