Topic
Bell mouth
About: Bell mouth is a research topic. Over the lifetime, 603 publications have been published within this topic receiving 1624 citations.
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Patent•
22 Apr 2010
TL;DR: In this paper, an air blower and a ventilation fan are used to change air in a space of a house etc and capable of improving an air blowing capacity and reducing noise when static pressure is applied even if a step is formed in the vicinity of a suction bell mouth.
Abstract: PROBLEM TO BE SOLVED: To provide an air blower and a ventilation fan used to change air in a space of a house etc and capable of improving an air blowing capacity and reducing noise when static pressure is applied even if a step is formed in the vicinity of a suction bell mouth SOLUTION: The suction bell mouth 5 having a recess 10 is provided on a front panel 6 of a ventilation fan body 1 mounted with the front panel 6 including an upstream side step 8 and an oil reservoir 9 for collecting droplets The air blower comprises the suction bell mouth 5 and an axial flow impeller 3 By this configuration, the ventilation fan can facilitate maintenance, improve the air blowing capacity and reduce noise when static pressure is applied COPYRIGHT: (C)2010,JPO&INPIT
Patent•
25 Jul 2012
TL;DR: In this paper, a fast-mounted water film deduster is presented, which comprises a cylinder (1), wherein a flue gas inlet (2) is arranged on the side wall of the lower part of the cylinder, and an overflow port (3) and a cleaning hole (4) are respectively positioned at the lower side of the FLU inlet.
Abstract: The invention discloses a fast-mounted water film deduster, which comprises a cylinder (1), wherein a flue gas inlet (2) is arranged on the side wall of the lower part of the cylinder (1), and an overflow port (3) and a cleaning hole (4) which are respectively positioned on the side wall of the cylinder (1) are arranged at the lower side of the flue gas inlet (2); a flue gas outlet (5) is arranged at the top end of the cylinder (1), and an annular overflow groove (6) is arranged at the upper part of the cylinder (1); a water pipe (7) communicated with the annular overflow groove (6) is arranged at the upper side of the annular overflow groove (6), and the cylinder (1) consists of branch cylinders (8); a bell mouth (9) with an upward opening is arranged at the upper end of each branch cylinder (8), and the lower ends of the upper-side branch cylinders (8) are sequentially embedded in the bell mouths (9) at the upper ends of the lower-side branch cylinders (8) to form the cylinder (1); and the bell mouths (9) at joints of the branch cylinders (8) are filled and sealed by acid clay The fast-mounted water film deduster has the advantages of convenience in transportation and installation, uniform overflow water film and good dedusting effect
01 Jan 2015
TL;DR: In this article, the effect of dimensions of the meshed plates on the critical submergence in an experimental model of a dam vertical intake has been studied and the results showed that using the vertical meshed plate could reduce the critical inundation up to 35%.
Abstract: Formation of the vortex at the entrance of a dam intake reduces its capacity. One of the common methods for preventing the air entry and reducing the power of the vortex is the use of meshed plates. In this research the effect of dimensions of the meshed plates on the critical submergence in an experimental model of bell-mouth vertical intake has been studied. The results showed that, using the vertical meshed plates could reduce the critical submergence up to 35%. At the end, an equation using Froude number and dimensions of the meshed plates was proposed that could predict the relative submergence, accurately.