The dual plenum for air distribution comprises a first chamber (1) and a second chamber (2) sharing at least one common wall (14), an air inlet (3) only in the first chamber communicated to an air supply source (8) by a pressurized air supply conduit (9), an air passage regulating device (7) in the common wall (14) selectively communicating the second chamber to the first chamber in response to an air pressure level in the first chamber, a first air outlet (10) in the first chamber and a second air outlet (11) in the second chamber through which pressurized air is evacuated from the first and second chambers, respectively, to an enclosure. The first and second air outlets have respective first and second diffusers (12, 13) which provide respective horizontal first and second air passage areas (S1, S2) and which direct air within an enclosure in general of a building.

An HVAC system for enhanced source-to-load matching without sacrificing airflow delivery in low load structures. Embodiments of the present disclosure provide for an HVAC system for enhanced source-to-load matching in a low load environment, i.e. dwellings with a BTU/hour capacity of less than 18,000. Prior art HVAC equipment is oversized for dwellings with a BTU/hour capacity of less than 18,000 that are insulated to minimum code requirements. Embodiments of the present disclosure provide for an HVAC system that separates the delivery of airflow (CFM) output from that of the BTU capacity output, thereby enabling a distributed delivery system for optimal source-to-load matching without sacrificing airflow delivery in low load environments. The source-to-load matching enabled by the present disclosure ensures optimal indoor air quality, enhanced comfort for occupants of the dwelling, and approximately a 60% reduction in heating and cooling costs when compared to prior art HVAC systems.

The present invention provides heating and cooling conditioning control in a multiple zone HVAC system to achieve enhanced user comfort and energy efficiency. In particular, the present invention provides a multiple zone HVAC control apparatus that senses and responds to changes in duct air pressure in order to prevent undesirable zone conditioning, energy loss, and register noise. The present invention offers particular benefit in high and medium velocity HVAC environments which typically suffer from pronounced deficiencies when zone demands diverge. Due to its ability to respond to changes in duct pressure, the present invention permits the conditioning of an increased number of zones without degradation in performance or user comfort. Additionally, the present invention provides a means to control elements within a multiple zone HVAC system including but not limited to heating and cooling sources, air circulator fans, zone dampers, and circulating pumps to achieve desired zone conditioning.

Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet port, a heat exchanger configured to exchange heat with air flowing in through the inlet port, a blowing unit configured to circulate air into or out of the housing, and a discharge unit rotatably provided relative to the housing, the discharge unit having a first outlet port formed in a portion of the outer circumferential surface to discharge the heat-exchanged air and a second outlet port formed in another portion of the outer circumferential surface to discharge the heat-exchanged air at different speed from the air discharged from the first outlet port.

A pressure relief assembly includes a housing defining an air passage chamber having at least one opening, and a membrane flap secured within the air passage chamber. The membrane flap is configured to move into an open position to expose the opening(s) to relieve air pressure. A plurality of flap-retaining clips securely couple the membrane flap to the housing. Each of the plurality of the flap-retaining clips includes a main body. A housing-connecting tab extends from a first end of the main body. The housing-connecting tab is retained within a retaining channel formed in the housing. Opposed flap-retention wings laterally extend from opposite sides of the main body. A portion of the membrane flap is trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing.

An air handling unit includes a manifold having an inlet configured to receive a supply of air, a plurality of apertures formed in the manifold, the apertures enabling a passage of air from the manifold out of said the handling unit, a bypass plenum formed in the manifold, and a damper positioned within the bypass plenum. The damper is pivotable between a closed position and an open position to allow air from the manifold to exit the air handling unit without passing through the apertures when a pressure within the manifold exceeds a threshold pressure.

An air handling unit includes a manifold having an inlet configured to receive a supply of air, a plurality of apertures formed in the manifold, the apertures enabling a passage of air from the manifold out of said the handling unit, a bypass plenum formed in the manifold, and a damper positioned within the bypass plenum. The damper is pivotable between a closed position and an open position to allow air from the manifold to exit the air handling unit without passing through the apertures when a pressure within the manifold exceeds a threshold pressure.

A heating, ventilation, and air conditioning (HVAC) system may include a HVAC unit that may control air flow, a first control system that may directly control operation of equipment in the HVAC unit, and a second control system communicatively coupled to the first control system. The second control system may be located in a different zone of a building as compared to the first control system, such that the second control system may receive a request to adjust the air flow output by the HVAC unit and send a command to the first control system based on the request. The command may cause the first control system to adjust the operation of the equipment in the HVAC unit to cause the air flow output by the HVAC unit to be adjusted according to the request.

A compensational control method includes the steps of: controlling a plurality of indoor air conditioning apparatuses to be in operation according to a target temperature; receiving continuously an operating parameter and an environmental datum from each of the indoor air conditioning apparatus; determining whether there is a specific indoor air conditioning apparatus that needs support; acquiring an adjacent indoor air conditioning apparatus which is influential for the specific indoor air conditioning apparatus according to an influence form which is previously built; establishing a supportive strategy according to a supportable operation capability of the adjacent indoor air conditioning apparatus; and adjusting the operating parameter of the adjacent indoor air conditioning apparatus according to the supportive strategy. Therefore, the adjacent indoor air conditioning apparatus is provided to improve an ambient temperature of an area where the specific indoor air conditioning apparatus is installed.

A volumetric flow controller for air conditioning and ventilation systems for displacing a control flap that is adjustably supported in the interior of a flow channel includes a differential pressure sensor for measuring a pressure difference prevailing in the flow channel. A control unit displaces the control flap depending on the pressure measured by the pressure sensor for adjusting a target volumetric flow in the flow channel. A first operating element is for selecting one of a plurality of parameters, in particular of control and/or configuration parameters. A second operating element is for adjusting the value of the respective selected parameter. A display is for displaying the currently set value of the respective selected parameter. The first operating element is a push button, a touch-sensitive switch, a touch-sensitive control panel or a contactless operating element for advancing the respective parameter displayed in the display.