Abstract: A method for operating a metal printing device has an enclosure in which the metal printing is carried out, the enclosure having an inlet and an outlet, and a fan also being provided, with which the atmosphere in the enclosure can be regenerated, a device also being provided in order to be able to extract particles in particular after a printing process is complete. In a first method step, process gas is extracted from the enclosure and conducted through a regeneration device in order to clean the atmosphere in the enclosure. In a second method step after the printing process is complete, excess particles are removed from the enclosure. A suction fan having a suction line connection is provided, wherein the mode can be switched over using a switchover device connected upstream of the suction fan.

Abstract: A device for manipulating an actuator (1) of an air vent (2), wherein, for generating as required an adjustment movement acting on the actuator (1), the device has a preferably manually actuable actuating element (3) and a drive mechanism (6) with a motor drive (7). The drive mechanism (6) is assigned a resetting mechanism which is designed to make an adjustment movement, brought about previously by the drive (7), of the actuator (1) relative to the housing (10) of the air vent (2) reversible again, if required, such that the actuator (1) is then again in a position relative to the housing (10) of the air vent (2) that was set previously by actuation of the actuating element (3).

Abstract: This invention relates to a method of monitoring a burner (2) and/or a burning behavior of a burner (2) by means of a measured ionization signal. The invention consists in that the ionization signal is measured between an ionization electrode (4, 4?) and a counter-electrode (3) spaced apart from a burner surface (2?) of the burner (2). Furthermore, the invention relates to a burner assembly.

Abstract: An appliance is provided with a cavity wrapper defining a cooking chamber therein. An embossment is formed in a wall of the cavity wrapper and protrudes within the cooking chamber. The embossment has a leading sloped portion. A shroud is located adjacent the wall and includes an outer perimeter edge that is spaced from the embossment thereby defining an exhaust port therebetween. A bracket is disposed outside the cavity wrapper and includes a pair of mounting tabs affixed to an external surface of the wall of the cavity wrapper. The pair of mounting tabs straddling the embossment in a staggered formation.

Abstract: An air-treatment system for a motor vehicle having an air conditioner, the system has an electrically powered air-treatment device in the air conditioner that treats air of an airflow generated by the air conditioner, a controller in the air conditioner that controls the air-treatment device in accordance with operating parameters of the air conditioner in which the air-treatment device is installed, and an electrical coder in the air-treatment device for identifying characteristics of the air-treatment device, that is electrically connectable with the controller on installation of the air-treatment device, and that is interogable after electrical connection to the controller has been established. This coder serves for detecting when the electrical coding means is electrically connected to the controller and for disconnecting electric power feed to the air-treatment device in the absence of an electrical connection between the coder and the controller.

Abstract: A cabin air extraction assembly for a vehicle that utilizes an air extractor input port disposed in the rear portion of the cabin of a vehicle that conduits cabin air to a snorkel assembly disposed within a sealed or substantially sealed body panel or side structure near the rear wheel well of the vehicle, for example. This snorkel assembly includes a one-way pressure relief valve. Because the snorkel assembly is positioned such that it is not prone to obstruction or the intake of water in a wading application, there is no risk of water intrusion into the cabin of the vehicle, even if the bottom portion of the snorkel assembly is disposed below the wading line during vehicle operation. Thus, the cabin air extraction assembly and associated method promote passenger comfort by allowing the HVAC system of a vehicle to be operated using fresh, outside air without cabin pressure problems, even during a wading application.

Abstract: An oven appliance may include a cabinet, a door, and a restrictor plate. The cabinet may include a top panel and a bottom panel. The cabinet may define a cooking chamber between the top panel and the bottom panel. The door may be mounted on the cabinet to selectively restrict access to the cooking chamber in a closed position. The door may extend along the vertical direction in the closed position between a top lip and a bottom lip. The restrictor plate may be mounted to the door at the bottom lip. The restrictor plate may extend downward and be spaced apart from the cabinet along the transverse direction.

Abstract: Disclosed is an air cleaner comprising: a housing (H); an air-purifying filter (20); a blowing unit (30); and a channel switching member (200) for switching a discharge channel such that air supplied from the blowing unit (30) flows to at least one of a first discharge port (A51) to discharge air in a first direction and the second discharge port (A52) to discharge air in a second direction. The channel switching member (200) comprises: an elevating member (210) having a first communication unit (216) that is open such that air flows to a first discharge port-side channel (A3), and having a blocking unit (215) for blocking a flow thereof to a second discharge port-side channel (A4); and an opening/closing member (220). The first discharge port-side channel (A3) and the second discharge port-side channel (A4) are opened/closed by ascending/descending of the elevating member (210) and moving of the opening/closing member (220).

Abstract: There is described a portable oven, such as a wood-fired oven. The oven comprises a housing and a cooking surface arranged within the housing. The housing comprises a skirt extending below the cooking surface such as to raise the cooking surface from the bottom edge of the oven. There is also provided a method for making a portable oven.

Abstract: An air discharge device includes a duct that defines a flow passage through which a working air flow to be discharged passes, and a hole forming member defining an air discharge hole as an outlet of the working air flow. The hole forming member has a vortex generation structure configured to generate an auxiliary vortex having a vortex characteristic including a vortex rotation direction and a vortex axis direction. The vortex characteristic of the auxiliary vortex is different from that of a lateral vortex generated by the working air flow at a downstream side of the air discharge hole. The vortex generation structure is configured in the hole forming member so that the auxiliary vortex collides with the lateral vortex in a state where at least one of the vortex rotation direction and the vortex axial direction of the vortex characteristic is different from that of the lateral vortex.

Abstract: An smart air duct/vent cover plate for air conditioning and ventilation can be implemented either as a nested three cylinder device which or as a cover frame with a flexible layer perforated with through holes. Either device provides selectivity in terms of the amount of airflow provided to an interior ambient air space. The functionality of both devices can be controlled by a wireless handheld remote control.

Abstract: A tapered flexible conduit and a ventilation system incorporating the same. The conduit is arranged to extend between a register and a fan assembly, such as in a whole house fan (WHF) system. The conduit includes a flexible inner liner surrounded by a flexible outer liner. The flexible inner liner has a length of helically formed wire coupled to a flexible membrane. The flexible outer liner includes an insulative layer to provide acoustic baffling for an airflow established by the fan assembly passing through the conduit. The tapered conduit has a frusto-conical shape along an overall length of the conduit to sealingly engage differently sized inlet and exhaust ports of the register and the fan assembly, respectively. The collapsible nature of the respective inner and outer liners reduces bulk during shipment and accommodates a variety of different configurations during installation.

Abstract: This invention provides a system and process to optimize photovoltaic (PV), grid, and other electricity in powering an electric water heater. The system comprises a photovoltaic (PV) controller coupled to a plurality of power input sources and heating elements wherein the heating elements immersed in an electric immersion heater water tank. The PV controller is further configured with control circuitry having an operating efficiency routine calculating optimal use cases from a variety of installation parameters and learned parameters to determine the appropriate power input source and switch between sources accordingly.

Abstract: A low NOX air heating swirl burner includes at least one burner unit, the burner unit comprising a combustion air duct, a fuel gas supply pipeline, a combustion nozzle and a fire protection baffle. The fire protection baffle comprises a fin and a base plate for generating swirl combustion air. The base plate includes a plurality of elongated holes and air guide blades disposed obliquely on air outlet sides of the elongated holes. The combustion air flows out of the elongated holes in the base plate of the fire protection baffle, generates a rotational flow under the action of the air guide blades to be strongly mixed with fuel gas sprayed from the combustion nozzle for combustion. The burner is in a modular form, which can adopt a corresponding splicing shape according to structural features of a heating space to meet the heating requirement.

Abstract: The present disclosure relates to an exhaust device. The exhaust device according to the concept of the present disclosure includes a base plate, a swirler, a driving motor, and a rotation shaft. The swirler includes a rotating plate in which the rotation shaft is connected to a central portion thereof, and a plurality of blade parts extending from an edge portion of the rotating plate. In this case, the rotating plate may be convexly bent such that the central portion thereof is positioned on the front side than the edge portion.

Abstract: A vent cover for an air duct having (a) a top surface with an aperture, (b) an actuating member extending through the aperture and operably connected to a magnet selectively engageable with the air duct, and (c) a bias means for urging the magnet towards the air duct, the actuating member movable between a securing position and a releasing position, wherein in the securing position the bias means urges the magnet towards the air duct, and in the releasing position the actuating member moves the magnet away from the air duct to allow the vent cover to be removed from the air duct.

Abstract: A modular datacenter facility and a method thereof is provided in accordance with some embodiments. The module datacenter facility can be constructed with an initial set of building modules of different types of functionality. A first building module can be a data-floor building module. A first set of sidewall-connected heating, ventilation, and air conditioning (“HVAC”) units can connect to a sidewall of the modular datacenter facility and use electrical power provided by a first electrical power distribution building module to supply conditioned air into an air-supply plenum of the sidewall to cool computing systems housed in the data-floor building module. The first set of the sidewall-connected HVAC units allow for fewer penetrations in a roof of the data-floor building module, thereby minimizing an amount of leaks potentially occurring in the roof of the ceiling, and thereby minimizing risk of any damage to the computing systems.

Abstract: A refrigerator has an open front and an air curtain system having at least one upper air egress with an outer edge and at least one lower air-recovery ingress. The air curtain system is adapted to produce a substantially vertical air curtain over at least part of the open front of the refrigerator. The refrigerator comprises at least one shelf between the egress and the ingress, the shelf having a front edge, and at least one elongate air-guiding strip extending across at least part of the open front of the fridge. The strip is located substantially in the plane of the shelf and spaced from the front edge of the shelf. The strip is located substantially vertically beneath the outer edge of the upper air egress.

Abstract: An upblast rain cap may have an inverted bottom cone joined to a top cap. The wall of the bottom cone is at an angle of less than 45 degrees with respect to a vertical axis. The joined cone and cap are held above a lower support coupler by a spar. The height of the bottom cone above the support coupler forms a side discharge area. The coupler attaches to the top of a vertical conveyance pipe through which exhaust air flows. A gutter is formed around the edge of the top cap. The gutter has a vertical opening that is aligned with the top of the spar. When rain falls, water flows over the top cap to the gutter, through the opening in the gutter, down the outside edge of the spar and down the outside of the support coupler.

Abstract: A ventilation device to be installed outdoors, includes: an air supply fan; an exhaust fan; a heat exchanger; and a casing having an accommodation space that accommodates the air supply fan, the exhaust fan, and the heat exchanger. The casing includes: a partition defining a lower end of the accommodation space and including a first outside air intake port and a first exhaust port each passing through the partition in an up-and-down direction; a bottom plate; an outside air intake chamber defined between the bottom plate and the partition disposed above the bottom plate and that communicates with the first outside air intake port; an exhaust chamber defined between the bottom plate and the partition and that communicates with the first exhaust port; and side plates.