Topic
Nozzle
About: Nozzle is a research topic. Over the lifetime, 158675 publications have been published within this topic receiving 893026 citations. The topic is also known as: spout.
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Patent•
29 Mar 1988TL;DR: In this article, a floor nozzle for use with a vacuum cleaner with a sub agitator provided outside an end wall of the main body of the nozzle is described. And the sub agittator is covered with a protecting cover, thereby assuring user safety.
Abstract: The present invention relates to a floor nozzle for use with a vacuum cleaner. The nozzle of the present invention has a sub agitator provided outside an end wall of a main body of the nozzle. The sub agitator is covered with a protecting cover, thereby assuring user safety. A stirring member, a dust outlet and confirmation holes of the sub agitator make it easier and smoother to discharge the dust to the outside, while preventing a burning or a breaking of the agitator.
104 citations
Patent•
21 Sep 1979
TL;DR: The hollow glass vacuum microspheres are made by forming a liquid film of molten glass across the coaxial blowing nozzles, applying the metal vapor blowing gas at a positive pressure on the inner surface of the glass film to blow the film which combines with the centrifugal force to form an elongated cylinder shaped liquid film as mentioned in this paper.
Abstract: The hollow glass vacuum microspheres are made by forming a liquid film of molten glass across the coaxial blowing nozzles, applying the metal vapor blowing gas at a positive pressure on the inner surface of the glass film to blow the film which combines with the centrifugal force to form an elongated cylinder shaped liquid film of molten glass A transverse jet is used to direct the inert entraining fluid over and around the blowing nozzle at an angle to the axis of the blowing nozzle The entraining fluid as it passes over and around the blowing nozzle fluid dynmically induces a pulsating or fluctuating pressure field at the opposite or lee side of the blowing nozzle in the wake or shadow of the coaxial blowing nozzle The continued movement of the entraining fluid over the elongated cylinder produces asymmetric fluid drag forces on the cylinder and closes and detaches the elongated cylinder from the coaxial blowing nozzle and the detached cylinder by the action of surface tension forms into a spherical shape Quench nozzles are disposed radially away from the rotor and direct cooling fluid downwardly at and into contact with the hollow glass amicrospheres to rapidly cool and solidify the molten glass to form a hard, smooth hollow glass microsphere and where metal vapor blowing gas is used to cool and condense the metal vapor and to deposit the metal vapor on the inner wall surface of the microsphere as a thin metal coating
104 citations
TL;DR: In this paper, the authors evaluated the heat transfer and flow rate characteristics of the nanofluid that converges into the square ducts with different aspect ratios, and established a baseline modeling for the fluid flow over a rectangular chamber that is designed in the form of a square duct of ratio 1:1.
Abstract: The study evaluates the nanofluid using finite element analysis with base fluid (water) and seeding particles (Aluminum oxide). This is placed over a convergence channel consisting of varying aspect ratio that are evaluated quantitatively to enhance the heat transfer properties of the nanofluid.We have considered frictional loss characteristics that increases the flow of the fluid with Reynolds numbers varying from 100-2000 is compared.A baseline modeling is established using the methodology analysis for the fluid flow over a rectangular chamber that is designed in the form of a square duct of ratio 1:1. The analysis is carried out over the heat transfer and flow rate characteristics of the nanofluid that converges into the square ducts with different aspect ratio, is analyzed.The concentration of the nano fluid is maintained at the constant rate, which is used for studying the flow rate influence over different aspect ratios. The thermal and flow characteristics is analyzed in such situation and validated against other literatures to check the efficiency in the converging rectangular oxygen free copper channel.The simulation results shows an increase in temperature on the duct out and drop in temperature on the inlet walls of the tube.The pressure changes and shear stress along the walls of the chamber is not much noticed and it is constant throughout the entire chamber.
104 citations
Patent•
15 Sep 1988
TL;DR: A method of manufacturing one or more nozzles for an ink jet printhead initially comprises bonding a nozzle plate to the ink ejection end of the printhead and a mask is then secured in contact with the nozzle plate, the mask having a plurality of apertures each defining a respective nozzle exit as discussed by the authors.
Abstract: A method of manufacturing one or more nozzles for an ink jet printhead initially comprises bonding a nozzle plate to the ink ejection end of the printhead. A mask is then secured in contact with the nozzle plate, the mask having a plurality of apertures each defining a respective nozzle exit. Laser radiation applied to the mask exposes the areas defined by the apertures to ablate the plate material between the nozzle exits on the external surface of the plate and corresponding nozzle inlets on the opposite surface of the plate. The assembly comprising the printhead, plate and mask is rocked during the exposure step to increase the area of the nozzle inlet relative to its outlet. Also, prior to the nozzle formation step, one or more ink troughs may be provided for supplying an external source of ink for each nozzle. The ink troughs, which may be formed using laser ablation techniques similar to those used in the formation of the nozzles, facilitate a continuous, positive flow of ink through the nozzles.
103 citations
103 citations