Fabric drop-down diffusers are disclosed. An example drop-down diffuser includes an upper panel including an upper fabric sheet to be held in radial tension by an upper hoop. The upper panel defines a supply air inlet. The example drop-down diffuser further includes a lower panel to be underneath and spaced apart from the upper panel. The example drop-down diffuser also includes a circumferential fabric sheet to encircle the upper panel and the lower panel. The circumferential fabric sheet is to extend downward from the upper panel to the lower panel to define an air chamber bordered by the upper panel, the lower panel and the circumferential fabric sheet. The air chamber is connected in fluid communication with the supply air inlet.

Fabric drop-down diffusers are disclosed. An example drop-down diffuser includes an upper panel including an upper fabric sheet to be held in radial tension by an upper hoop. The upper panel defines a supply air inlet. The example drop-down diffuser further includes a lower panel to be underneath and spaced apart from the upper panel. The example drop-down diffuser also includes a circumferential fabric sheet to encircle the upper panel and the lower panel. The circumferential fabric sheet is to extend downward from the upper panel to the lower panel to define an air chamber bordered by the upper panel, the lower panel and the circumferential fabric sheet. The air chamber is connected in fluid communication with the supply air inlet.

A diffuser assembly for a heating, ventilating, and air conditioning (HVAC) system includes a housing having an outer frame and an inner frame disposed within the outer frame. The outer frame includes an inlet configured to receive an air flow. The inner frame forms a first flow path for the air flow through the housing between the outer frame and the inner frame. The inner frame defines a second flow path for the air flow through the inner frame. The diffuser assembly also includes a damper assembly configured to transition between a first configuration to enable discharge of the air flow from the housing via the first flow path and a second configuration to enable discharge of the air flow from the housing via the second flow path.

A diffuser assembly for a heating, ventilating, and air conditioning (HVAC) system includes a housing having an outer frame and an inner frame disposed within the outer frame. The outer frame includes an inlet configured to receive an air flow. The inner frame forms a first flow path for the air flow through the housing between the outer frame and the inner frame. The inner frame defines a second flow path for the air flow through the inner frame. The diffuser assembly also includes a damper assembly configured to transition between a first configuration to enable discharge of the air flow from the housing via the first flow path and a second configuration to enable discharge of the air flow from the housing via the second flow path.

The invention relates to a device (1) for distributing air. The device (1) has a housing (2) which includes an air inlet opening (20) and a plurality of air outlet openings (21). Arranged in the housing (2) is a displacement element (3) which has at least one cutting plane that is configured as a cutting plane of a hollow cylinder widening along a longitudinal axis (26) of the housing (2).

The invention relates to a device (1) for distributing air. The device (1) has a housing (2) which includes an air inlet opening (20) and a plurality of air outlet openings (21). Arranged in the housing (2) is a displacement element (3) which has at least one cutting plane that is configured as a cutting plane of a hollow cylinder widening along a longitudinal axis (26) of the housing (2).

An air diffuser (10) includes a casing (16) with an inlet (18) connected to a supply of air, and an outlet (22) defining a diffusion flow passage extending in a diffusion direction (30). A cover (32) is disposed adjacent the diffusion flow passage to define an induction flow passage (36) that is in flow communication with the diffusion flow passage and is oriented such that air from the induction flow passage (36) is drawn into the diffusion flow passage to be discharged into a room (12). A germicidal light source (38) is provided to irradiate the induction flow passage (36) and kill airborne pathogens.

An air diffuser (10) includes a casing (16) with an inlet (18) connected to a supply of air, and an outlet (22) defining a diffusion flow passage extending in a diffusion direction (30). A cover (32) is disposed adjacent the diffusion flow passage to define an induction flow passage (36) that is in flow communication with the diffusion flow passage and is oriented such that air from the induction flow passage (36) is drawn into the diffusion flow passage to be discharged into a room (12). A germicidal light source (38) is provided to irradiate the induction flow passage (36) and kill airborne pathogens.

An air amplifier utilizes a high-pressure input stream of air to accelerate a low-velocity input stream of air to provide a high-velocity, high-volume output stream of air. A coupled air amplifier array includes multiple air amplifiers which couple their respective output streams of air to one another to form a single collective output stream of air. Multiple coupled air amplifier arrays can be utilized to form coupled air amplifier array systems to provide multiple collective output streams of air which can be focused toward to an audience within a venue. The coupled air amplifier array system can be implemented within atmospheric effects systems to provide atmospheric effects, such as wind, scent, and/or temperature to provide some examples, relating to an event. These atmospheric effects systems can present these atmospheric effects to the audience to enhance the immersion of the audience as they are viewing the event. These atmospheric effects systems can include multiple portable mobile effects pods that are situated within different locations within the venue to present these atmospheric effects to different locations with the venue.

Architectures and techniques are presented that can facilitate improved design and function of certain heating, ventilation, and air conditioning (HVAC) devices. Architectures directed to an improved evase device can be designed with rounded corners that can facilitate, e.g., mitigation of reverse flow that traditionally grows back from corners of a transition from an axial fan to a rectangular duct. Architectures directed to an improved intake device can be designed to limit intake from certain flow directions and to smoothly change flow direction, which can facilitate, e.g., reduction in noise. Architectures directed to an improved fan intake device can be designed to reduce noise without significantly reducing total pressure. Architectures directed to an improved air handler device can be designed to concurrently heat and cool air and to reduce dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties.