Abstract: A ventilation method for a high gas working face based on alternating intake and air return in a mine gallery is provided. In this method, an isolated island working face is divided into several sections along a strike direction. A coal pillar is alternately set as a conventional section and a gas-drainage section. Opposite coal pillars in the two mine galleries within the same section are respectively used as the conventional section and the gas-drainage section. Two mine galleries on both sides of the isolated island working face are alternately used as an intake gallery and a return gallery. The coal pillar at the side of the mine gallery as the return gallery is the gas-drainage section. A gas-drainage hole communicating a goaf is provided in the gas-drainage section, so that gas in the goafs at two sides of the isolated island working face can be extracted alternately.

Abstract: An air circulation device includes a suction section configured to suck indoor air, and a blower section configured to blow the air sucked by the suction section into a room. The air is in a form of a vortex ring. The air circulation device is operable in at least a first mode in which the vortex ring blown therefrom reaches a wall surface of the room.

Abstract: A component for guiding an airflow in an air-conditioning system of an aircraft includes at least one structural part, at least one inlet opening and at least one outlet opening for air. At least two partial shells are interconnected in an airtight manner in such a way that the inlet openings and the outlet openings remain clear. The partial shells are particle foam parts. A method for producing the component incudes forming the partial shells of particle foam, and interconnecting the partial shells to form the component.

Abstract: 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.

Abstract: The present embodiments relate to an air distribution apparatus for distributing conditioned airflow from a roof mounted air conditioner to the inside of a vehicle, which includes an inlet port adapted to receive the conditioned airflow from the roof mounted air conditioner. An outlet port, which is disposed adjacent to each longitudinal end of the apparatus, delivers conditioned airflow to the vehicle. An internal supply duct is adapted to evenly split the conditioned airflow to the outlet ports.

Abstract: A cooking appliance in one embodiment may include a main body provided therein with a cooking space, a door configured to open and close the cooking space, a packing member disposed at an entrance of the cooking space and configured to seal a gap that is created in a portion where the main body contacts the door with the door closed, and a bracket coupled to a lower portion of the door and to suppress contact between the packing member and a foreign substance moving to the lower portion of the door with the door closed.

Abstract: A vehicle includes an internal cabin, a first group of seats within a first row within the internal cabin, a second group of seats within a second row within the internal cabin, and an air curtain system within the internal cabin. The air curtain system is configured to provide one or more air curtains between one or both of (a) the first row and the second row or (b) adjacent seats of one or both of the first group or the second group.

Abstract: A fan includes an inlet part disposed to form a fan inlet, a base disposed to form, together with the inlet part, a fan outlet, and a blade. The blade extends from the base to the inlet part, and includes a first guide surface having an inclination toward an outside of the fan in a radial direction of the fan which changes in a direction from the inlet part toward the base, and a second guide surface having an inclination toward the outside of the fan in the radial direction which changes in a direction from the base toward the inlet part.

Abstract: The present disclosure is directed to a sunshade system that monitors a position of the sun and adjusts a position of a frame and/or blades based on a position of the sun. For example, a heating, ventilation, and air conditioning (HVAC) unit of an HVAC system may be exposed to adverse, external weather conditions, such as sunlight, which may heat up components of the HVAC unit and decrease an efficiency of the HVAC system. Accordingly, a control system of the sunshade system may monitor the position of the sun and adjust the position of the frame and/or the blades to provide adequate shading for the HVAC unit.

Abstract: A cover (1) for a pressure relief valve assembly (2) of a vehicle, wherein the cover (1) comprises a base body (19) made of a sound-absorbing material which is uniform in terms of the material composition, wherein the base body as such is designed to be self-supporting and is in particular connectable to an edge region (4) of a pressure relief valve assembly (2).

Abstract: Fire pit systems including a base pan member having a base pan member lower wall with a pan outer periphery, and one or more side walls extending upward from the base pan member lower wall and along the pan outer periphery; at least two rod members extending upward along opposite sides of the pan outer periphery; and one or more additional accessories that are attachable to and detachable from at least one of the at least two rod members, the one or more additional accessories comprising a griddle, a grill, a coffee pot, a Dutch oven, a tubular spacer, a pot holder, a horizontal bar extending between two rod members of the at least two rod members, a warming tray, or any combination thereof. Methods of making and using the fire pit systems.

Abstract: A cake covering assembly for protecting a cake from airborne pathogens includes a cover that is positionable over a cake. The cover is comprised of a fluid impermeable material to protect the cake from airborne pathogens. The cover has a plurality of candle openings each extending through the cover. A plurality of candle holders is provided and each of the candle holders has a receiver to insertably receive a candle. Each of the candle holders is insertable through a respective one of the candle openings having the receiver being spaced above the cover. In this way each of the candle holders can support the candle in a vertical orientation thereby facilitating the candle to be blown out by a user in the convention of blowing out birthday candles.

Abstract: To enable easy access and lead wire routing during maintenance, without causing ventilation hindrance. An electrical component box 14 is provided on the side of the outer surface of a lateral plate 113 of an outer shell 11 of a body unit, and a cable storage part 15 for storing a drawing section of a lead wire 143 drawn from the electrical component box 14 and guiding the drawing section in a predetermined direction is disposed on the side of the inner surface of the lateral plate 11.

Abstract: A system comprises an environmental control system (ECS) having a plurality of ducts configured to convey a flow of air into an interior space through the plurality of ducts. A plurality of valves are disposed in the plurality of ducts to control the flow of air through a respective duct into the interior space. A plurality of sensors are disposed in the interior space configured to sense a passenger condition.

Abstract: A food cooling apparatus, including a generally pear shaped housing having a bottom portion connected to a middle portion tapering to a top portion, an electric fan connected to an interior wall of the housing and operative to draw air into an air inlet and out an air outlet, and a rechargeable battery supported within the bottom portion. A connector portion configured to attach to an external surface extends downward from the bottom portion. The housing has a generally hollow interior with the air inlet located on the middle portion or bottom portion and the air outlet located on the top portion. The air outlet is generally perpendicular to the housing in an upright position. The electric fan is not visible from the outside of the generally pear shaped housing. The rechargeable battery operationally provides power to the electric fan. The lower portion has a greater mass than the middle and top portions such that the center of gravity of the housing is lowered.

Abstract: The invention relates to a loop (40) for extracting water from an air conditioning system of a cabin (5) of an air or rail transport vehicle comprising an air cycle turbine engine (20), the loop comprising: a condenser (41); a three-dimensional mesh grid (45) housed in an outlet box (42) of the condenser and configured to be able to capture water droplets in a stream of moist air condensed by the condenser; a water recovery unit (46) opening on the condenser outlet box (42) and arranged under the three-dimensional mesh grid (45) so as to be able to recover, by force of gravity, the water collected by the three-dimensional mesh grid (45); an air return pipe (44) linking the outlet box (42) to a supply interface for directly or indirectly supplying the turbine of the air conditioning system.

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: 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: 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: 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.