Abstract: A pressure relief assembly includes a housing defining an air passage chamber having at least one airflow opening. A flap is secured within the air passage chamber. The flap is configured to move into an open position to expose the airflow opening(s) to relieve air pressure. A cushion is secured to the housing underneath the flap. The cushion is configured to cushion motion of the flap. A first attachment securely couples the flap to the housing. A second attachment securely couples the cushion to the housing. The first attachment is separate and distinct from the second attachment.

Abstract: A method of preventing exhaust gas intrusion in a passenger compartment of a vehicle is provided. Whether a vehicle operating condition resulting in an increased carbon monoxide emission at an exhaust pipe is present is detected. Whether a vehicle component condition is present is detected. The vehicle component condition is an open window or an open sunroof. An HVAC setting is switched from a recirculating air mode to a fresh air mode when at least one of the vehicle operating condition and the vehicle component condition is detected as being present.

Abstract: Fume evacuation systems are disclosed. An example fume evacuation system includes: an air handling system for drawing components comprising air, fumes, smoke, or particulate, or a combination thereof from a metal working application; an air conduit couple to the air handling system for conveying the components from the metal working application towards the air handling system; and a hood coupled to the air conduit and configured to be positioned at the metal working application, the hood comprising a structure defining a circuitous path for particulate that, in operation, allows the airborne components to pass through the hood to the air conduit but causes particulate to cool the components.

Abstract: An active laminar flow control arrangement may comprise a variable speed constant frequency (VSCF) converter comprising a housing, a compressor, an electric motor operably coupled to the compressor, and a laminar flow control duct. An airflow is received by the housing from the laminar flow control duct in response to the electric motor driving the compressor for cooling the VSCF converter.

Abstract: A blower unit for a heating, ventilation, and air conditioner system (HVAC) of a vehicle. The blower unit includes an inside/outside air switching box. A switching door disposed in the inside/outside air switching box that is configured to selectively open and close an inside air introduction port and an outside air introduction port of the inside/outside air switching box. A fan is also located inside the inside/outside air switching box and blows air introduced into the inside/outside air switching box from the inside air introduction port and the outside air introduction port into the passenger compartment. A first plurality of ribs is provided on an inner surface of the switching door with a first perforated panel coupled to each of the first plurality of ribs. The first plurality of ribs and the first perforated panel reduce noise generated during an inside air introduction mode.

Abstract: An air vent for an automobile comprises a duct in which a passage having an air inlet and an air outlet communicating with each other is formed; a duct cover fixed to a front surface of the duct; a knob mount fixed to a front surface of the duct cover; a knob installed in the knob mount and configured to be laterally movable; a nozzle installed in a direction of the air outlet of the duct and configured to be vertically rotatable; a front vane connected to the nozzle and configured to be laterally rotatable; a damper plate having one side end portion connected to the nozzle and an other side end portion to be moved along a guide groove formed in the duct; and a damper configured to be rotatable to open or close the passage.

Abstract: An air flow control system includes a plenum having an air inlet, a first air outlet, a second air outlet and a third air outlet, a vent door, an air guide, carried on the vent door, and an actuator. The actuator displaces the vent door between a first position closing the first air outlet and a second position opening the first air outlet. A climate control method for an autonomous vehicle is also provided.

Abstract: An improved HVAC vent is disclosed. The vent may include an air turbine positioned within a passageway for selectively enabling and preventing airflow. In use, the air turbine is selectively operable between first and second states. In the first state, the air turbine may be freely rotatable, via the airflow, so that the received airflow can move through the passageway. In the second state, rotation of the air turbine is controlled or prevented so that the received airflow is inhibited or substantially inhibited from moving through the passageway. The vent may also include a motor. In use, the motor may act an energy generator and as an active brake so that in the first state, rotation of the air turbine is used to charge a power storage unit, and in the second state, the motor limits rotation of the air turbine.

Abstract: A displacement ventilation system for a room includes a first duct located inside the room and extending between a floor and a ceiling of the room, an air inlet coupled with the first duct for drawing air into the system, and an elongated diffuser extending adjacent the floor for diffusing at least some of the outside air over the floor of the enclosed spaced. The system includes a return air duct extending adjacent the ceiling and being coupled with the first duct for removing return air from the room and advancing the return air toward the first duct, a heat exchanger for transferring thermal energy between the return air and the outside air, and a heat pump for changing a temperature level of the outside air or the return air passing through the heat pump. The system includes sensors located inside the room, and a controller for controlling operation of the system. The controller is in communication with the sensors.

Abstract: A combustion air blower includes a blower housing, an impeller fan within the blower housing, and an embossment to restrict airflow from the combustion air blower. The blower housing has a discharge conduit defining a discharge passageway. The discharge conduit is adapted and configured to receive a baffle such that, when the baffle is received, the baffle extends inwardly into the discharge passageway from a first wall towards a second wall opposite the first wall. The baffle restricts airflow within the discharge passageway. The embossment is in the discharge passageway and in the second wall and extends towards the first wall such that the embossment restricts airflow within the discharge passageway. The embossment cooperates with a baffle to provide a reduced cross sectional area of the discharge passageway in comparison to an upstream portion.

Abstract: Apparatuses and methods are provided for blocking removal of an air-moving assembly from a housing when in operational state. The apparatus includes a protective louver assembly having a louver(s) and an interlock element(s). The louver(s) is disposed at an air inlet or an air outlet of the air-moving assembly, and pivots between an operational and a quiesced orientation, dependent on presence or absence, respectively, of airflow through the air-moving assembly. The interlock element(s) is associated with the louver(s) to pivot with the louver(s) between the operational orientation and the quiesced orientation. In the operational orientation, the interlock element(s) blocks, at least in part, access to at least one fastener securing the air-moving assembly within the housing, and thereby prevents removal of the air-moving assembly from the chassis when in the operational state.

Abstract: An air flow control system for an assembly line grow pod is provided. The air flow control system includes a shell including an enclosed area, one or more carts moving on a track within the enclosed area, an air supplier within the enclosed area, one or more outlet vents coupled to the air supplier, and a controller. The controller includes one or more processors, one or more memory modules, and machine readable instructions stored in the one or more memory modules that, when executed by the one or more processors, cause the controller to identify a plant on the one or more carts, determine an airflow rate based on an airflow recipe for the identified plant, and control the air supplier to output air through the one or more outlet vents at the airflow rate.

Abstract: A drainage system for draining water from an air intake and from an air distribution housing of an air conditioning system into the environment. The drainage system including a drainage opening or the drainage of water into the environment, wherein the drainage opening is formed on a lower shell of the air distribution housing and is divided into a drainage area for water from the air intake housing on the one hand, and a drainage area for water from the air distribution housing on the other hand, and wherein the drainage area for water from the air intake housing is formed by the terminus of a separate duct for the drainage of water from the air intake. In this way, the reciprocal effect between the different pressure levels is avoided or reduced to the extent possible.

Abstract: The present teachings relate to an air conditioner device with at least one ventilation device, which has at least one fluid transport device and at least two fluid exchange devices, wherein the fluid transport device has at least two attachment openings, of which one is a fluid inlet and one additional a fluid outlet. Provision is made that in at least one operational state at least a first fluid exchange device is attached to a fluid inlet of a fluid transporting device and a second fluid exchange device is attached to a fluid outlet of a fluid transporting device.

Abstract: A night cover for a refrigerated merchandiser that is positionable to substantially enclose a product display area of the merchandiser. The night cover includes a first portion and a second portion that is disposed above the first portion. The second portion cooperates with the first portion to define a first surface area, and the second portion defines a second surface area and has an open section configured to permit ambient airflow through the night cover. A ratio of the first surface area to the second surface area is between approximately 7:1 and 18:1.

Abstract: The present invention is directed to an exhaust vent assembly including a sleeve, a neck, a damper in the neck, a cap attached to the neck and a collar. The exhaust vent assembly may be configured without any tools and without any penetrative fasteners.

Abstract: A combined ventilation and illumination system includes a ventilation assembly, a light fixture assembly, and a connector assembly. In an installed position, the system is installed above a ceiling of a room of building structure (e.g., a residence or workplace) to provide ventilation for the room. The system couples a light fixture to ventilation assembly below the ceiling. In the installed position, an air flow cavity is defined between the light fixture and the ceiling, where the cavity allows for air flow around the light fixture and into the ventilation assembly for eventual exhaust beyond the room in which the system is installed. The cavity includes a first critical distance that is sized according to operating parameters of a blower of the ventilation assembly to provide an adequate flow rate of intake air and to provide acceptable sound levels during operation of the system.

Abstract: The present disclosure relates to an air vent structure. The air vent structure at least includes a tubular housing through which an air-conditioned air flows, and an annular finisher in an air flow-out end of the housing. The air vent structure further includes an air restrictor that restricts the inflow of the air-conditioned air into a clearance between the air flow-out end of the housing and the finisher.

Abstract: Devices for retrofitting existing, manual airflow registers are described that convert a manual register with blades into a motorized damper. The devices include a support structure attached to the register and having a motor that moves a linking apparatus. The linking apparatus is coupled with a lever of the register that itself is coupled with the blades such that movement of the lever rotates the blades and therefore control the amount of airflow through the register. By moving the linking apparatus via a motor, the lever can also be moved allowing the manual airflow register to be automatically controlled with the need to replace the existing register.

Abstract: A monitor for a natural gas-fired appliance is provided. The monitor comprises: a natural gas cycle-monitor interface configured to receive cycling signals from one or more of: the appliance; and a monitoring device located in the appliance and/or proximal to the appliance; a processor, in communication with the interface, configured to monitor cycles of the appliance based on the cycling signals; one or more indicators, in communication with the processor, configured to provide an alarm when the processor determines that the cycles of the appliance meets a threshold value; a first reset device configured to temporarily reset the one or more indicators to turn off the alarm when actuated, the one or more indicators again providing the alarm after a given time period following a temporary reset; and, a second reset device configured to reset monitoring of the cycles at the processor when actuated.