Disclosed is an air terminal device for a ventilation system for a building. The air terminal device includes a pressure box, with an inlet admitting supply air into the pressure box and outlet openings for admitting supply air out. The device further includes first and second cover plates, each arranged to control and change the open area of a plurality of the outlet openings. The outlet openings are arranged in a wall of the pressure box forming an outlet surface of the pressure box. The cover plate or cover plates are arranged to be in contact with and slide relative the outlet surface while changing the open area of the outlet openings. The first cover plate and the second cover plate are arranged to slide relative each other and to be in contact with and slide relative the outlet surface while changing the open area of the outlet openings.

Disclosed is an air terminal device for a ventilation system for a building. The air terminal device includes a pressure box, with an inlet admitting supply air into the pressure box and outlet openings for admitting supply air out. The device further includes first and second cover plates, each arranged to control and change the open area of a plurality of the outlet openings. The outlet openings are arranged in a wall of the pressure box forming an outlet surface of the pressure box. The cover plate or cover plates are arranged to be in contact with and slide relative the outlet surface while changing the open area of the outlet openings. The first cover plate and the second cover plate are arranged to slide relative each other and to be in contact with and slide relative the outlet surface while changing the open area of the outlet openings.

A blower may include a lower case having a suction port, a fan provided inside the lower case, an upper case provided above the lower case and having a space through which air blown from the fan flows, a discharge port penetrating the upper case and formed to be elongated, and a flow guide provided in the space and extending in a direction crossing a longitudinal direction of the discharge port.

An air diffuser of a heating, ventilation, and/or air conditioning (HVAC) system includes a mixing chamber having a circulation inlet and a mixing region, a room air intake fluidly coupled with the circulation inlet and separated from the mixing region by a blank-off plate, and a nozzle. The nozzle is disposed adjacent to the circulation inlet and configured to accelerate a conditioned air flow into the mixing region such that unconditioned room air is induced by the conditioned air flow to enter the mixing region through the circulation inlet and from the room air intake.

An air diffuser of a heating, ventilation, and/or air conditioning (HVAC) system includes a mixing chamber having a circulation inlet and a mixing region, a room air intake fluidly coupled with the circulation inlet and separated from the mixing region by a blank-off plate, and a nozzle. The nozzle is disposed adjacent to the circulation inlet and configured to accelerate a conditioned air flow into the mixing region such that unconditioned room air is induced by the conditioned air flow to enter the mixing region through the circulation inlet and from the room air intake.

An air supply device is provided, which includes a housing with a cavity being formed therein. The air supply device further includes a partition plate, dividing the cavity of the housing into an upper cavity and a lower cavity; a flow equalizing plate, being vertically arranged in the upper cavity to divide the upper cavity into an air inlet cavity and a static pressure cavity, where a first air inlet that is communicated with the air inlet cavity being formed in the housing; an adjustable baffle plate, having a vertical height less than a vertical height of the lower cavity. The adjustable baffle plate divides the lower cavity into an induction cavity and a heat exchange cavity. The adjustable baffle plate and a top of the lower cavity form a first induced air opening. A heat exchanger is arranged in the heat exchange cavity.

An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.

An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.

A comfort cassette (1) and a method which comprises a pressure box (2) with an inlet (3) and a plurality of outlets (4) for through flow of a supply air flow (L1). The outlets (4) are arranged at more than two of the pressure box edges (5a, 5b, . . . 5n) and form a group (6a, 6b, . . . 6n) of outlets per edge (5a, 5b, . . . 5n). The outlets are arranged in a configuration which is changeable by outlets (4) of a cover member (8) when the cover member (8) is displaced in relation to the outlets (4) of the pressure box (4). The cover member (8) is arranged to change simultaneously the configuration of all groups (6a, 6b, . . . 6n) of the outlets, by movement of the cover member (8) in only one direction, while the supply air flow (L1) is changeable in more than two directions by movement of the cover member.

A comfort cassette (1) and a method which comprises a pressure box (2) with an inlet (3) and a plurality of outlets (4) for through flow of a supply air flow (L1). The outlets (4) are arranged at more than two of the pressure box edges (5a, 5b, . . . 5n) and form a group (6a, 6b, . . . 6n) of outlets per edge (5a, 5b, . . . 5n). The outlets are arranged in a configuration which is changeable by outlets (4) of a cover member (8) when the cover member (8) is displaced in relation to the outlets (4) of the pressure box (4). The cover member (8) is arranged to change simultaneously the configuration of all groups (6a, 6b, . . . 6n) of the outlets, by movement of the cover member (8) in only one direction, while the supply air flow (L1) is changeable in more than two directions by movement of the cover member.