4results about How to "Improve blowing efficiency" patented technology

The utility model provides a kind of electric hair dryer, it includes shell and hair dryer piece.The electric hair dryer of the utility model, shell inside is equipped with multiple independent air duct, each air duct independently sets air inlet, air outlet and hair dryer piece, airflow can independently circulate in respective air duct inside, effectively ensure the air speed, air pressure stability of each direction air outlet, improve overall hair drying efficiency;And, the air outlet direction of the air outlet passage formed by the electric hair dryer corresponding multiple air ducts is different, so that user can realize the coverage of multiple area airflow without frequently adjusting the position of electric hair dryer, to make airflow distribution more uniform, range more extensive, to effectively cover the different area of object to be blown dry, improve user's use experience.

The utility model relates to the technical field of blast furnace coal injection, and provides a blast furnace coal injection device which comprises a feeding cover and a plurality of bottom frames, the bottom frames are all fixed to the bottom of the feeding cover, a feeding pipeline is arranged on the outer side of the feeding cover, a feeding assembly is arranged in the feeding cover and the feeding pipeline, and the feeding assembly is arranged in the feeding cover and the feeding pipeline. The air inlet assembly is arranged at the inner bottom of the feeding cover, the feeding assembly comprises a spiral auger, the spiral auger is installed in a feeding pipeline, a dispersing cover is arranged on the periphery of the interior of the feeding cover, the feeding pipeline is communicated with the interior of the dispersing cover, a plurality of inlets are formed in the periphery of the bottom of the dispersing cover, and a pair of sliding rails is arranged at the top of the dispersing cover; a rotating cover is slidably connected to the sliding rail, a plurality of pushing plates are arranged on the bottom face of the rotating cover, and a protruding layer is arranged on the surface of the rotating cover. By means of the technical scheme, the technical problems that in the prior art, due to the technical bottlenecks of uneven feeding and excessive internal residues, the pulverized coal conveying efficiency is low, and combustion is insufficient are solved.

This invention provides an airflow output direction adjustment device and an adjustable airflow direction hot air gun. The device relates to components and a hot air gun. The airflow output direction adjustment device includes: a fixed base with a base inlet and a base outlet; an adjustment component with a component inlet and a component outlet, the component inlet communicating with the base outlet; and the spatial orientation of the component outlet relative to the component inlet is adjustable, allowing the flow path between the component inlet and the component outlet to be switched or adjusted by adjusting the spatial orientation of the component outlet relative to the component inlet, thereby adjusting the airflow output direction.

This application belongs to the field of fans and relates to an air inlet grille and a fan. The air inlet grille includes multiple air guide ribs arranged radially around a preset axis. Adjacent air guide ribs are spaced apart, and the ends of the multiple air guide ribs near the preset axis are connected to form an air inlet area. The air guide ribs have a windward side and a leeward side arranged opposite each other. The leeward side is provided with a flow guiding structure, and the extension direction of the flow guiding structure intersects with the extension direction of the air inlet area. In this application, by connecting the ends of the multiple air guide ribs near the preset axis to form an air inlet area, providing a flow guiding structure on the leeward side of the air guide ribs, and having the extension direction of the flow guiding structure intersect with the extension direction of the air inlet area, an air inlet area is formed in the middle of the air inlet grille. After the airflow passes through the air inlet area, it can be dispersed by the flow guiding structure to effectively reduce the vortex in the middle of the leeward side of the air inlet grille, thereby reducing noise and improving blowing efficiency.