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•
02 Feb 1994
TL;DR: In this article, a fan shroud was designed to achieve compactification and to improve wind starting ability by curving blade parts so that the angle radius, which the curved face makes with a radius line employing the axial line as the center, in each part of the curve face of the blade parts is reduced as it goes toward the outside in the radial direction.
Abstract: PURPOSE: To accomplish compactification and to improve wind starting ability by curving blade parts so that the angle radius, which the curved face makes with a radius line employing the axial line as the center, in each part of the curved face of the blade parts is reduced as it goes toward the outside in the radial direction CONSTITUTION: In a fan shroud 7 for a heat exchanger, multiple blade parts 6, which are arranged at some intervals and are parallel to each other, are arranged in a rear part bell mouth 8, which is formed in the rear end part of a shroud main body 2 and is tapered toward the upstream side, while the curved faces of the blades 6 are parallel to the axial line of the shroud main body 2, and the curved faces are curved so that, in each part of the curved faces, an angle which the curved face makes with the radius line employing the axial line as the center is reduced as it goes further to the outside in the radial direction Therefore, wind starting force in the vicinity of the tip part of blades 5 of a fan 4 is increased Especially, a circumferential directional velocity component and a radius directional velocity component are large in the tip part of the blades 5 of the fan 4, so that air flow is smoothly faired by means of the blade parts 6 conforming with the flow in the flow direction, and the wind starting ability is improved as a whole COPYRIGHT: (C)1995,JPO
5 citations
Patent•
17 Apr 1985
TL;DR: In this article, a dilution control port is connected to a second pump in series with a source of fluids to measure the flow and density of the material being drawn into the mouth and adds or reduces dilution fluid in accordance with a set point so that a constant density is maintained at all times.
Abstract: This is an improved apparatus used with a storage and reclamation apparatus which handles slurry formed of particulate matter and fluid. The reclaim apparatus incluaes a tank having a side wall and bottom. The slurry is added into the tank and is subsequently removed from the tank by a downwardly facing bell mouth coupled through a pipe to a pump. Fluidizing jets surround the bell mouth with a dilution control port mounted between the mouth and the pump. Fluidizing jets surround the bell mouth and the pump. The dilution control port is connected to a second pump in series with a source of fluids. Process control apparatus measures the flow and density of the material being drawn into the mouth and adds or reduces dilution fluid in accordance with a set point so that a constant density is maintained at all times. The improved version accepts the overflow from the tank into a second tank which has a second bell mouth mounted at the bottom of the tank. Solids and fluids are sucked into...
5 citations
Patent•
22 Nov 2001
TL;DR: In this paper, an internal thread is inserted into a corrugated tube and a spiral thread is screwed into the thread to screw it into a manhole or a hand hole.
Abstract: PROBLEM TO BE SOLVED: To provide a bell mouth for a corrugated tube by which a cable can be pulled and inserted always quickly, and to provide a mounting structure to an end wall which can be attached to a manhole, a hand hole or the like stably SOLUTION: An internal thread 2b, which uses resin concrete as a blank and into which the spiral thread 4a of the corrugated tube 4 is inserted to be screwed, is provided A guide 2c, which continues to the internal thread 2b and whose inside diameter is smaller than the inside diameter of the corrugated tube 4, is provided The bellmouth 1, where profiling faces 2c-1, 2c-2 whose cross section is annular to be expanded gradually are formed on both ends in the axial line direction of the guide part 2c, is taper-fitted to a mounting hole 3a in the resin concrete ed wall 3, to be bonded and fixed by an adhesive 5
5 citations
Patent•
10 Jun 1992
TL;DR: In this article, a forced-heating machine for vehicles, which is used for automobiles or tractors, is described, and the model can be made into different sizes according to the different model of vehicles to meet requirements.
Abstract: The utility model relates to a forced-heating machine for vehicles, which is used for automobiles or tractors. By using the heat energy of engine exhaust to heat air, the utility model can quickly improve the temperature of air after the engine is started (5 to 10 minutes) and is used to heat for carriages. The utility model comprises a bell mouth for air inlet 5, a heat exchanger 7, a hot-air control valve 15, a hot-air outlet 16, air guide pipes 6, 14, etc. The heat exchanger is positioned at the lower part of an exhaust pipe of the engine and the outside of the exhaust pipe is added and installed the heat exchanger; the utility model is provided with a spiral-typed plate which can make inlet air rotate a plurality of rounds to absorb the sporadic heat from the exhaust passage to enhance temperature, and the heated air is introduced into a driving cab or a carriage to heat. The utility model can be made into different sizes according to the different model of vehicles to meet requirements.
5 citations
Patent•
22 Apr 2015
TL;DR: In this paper, the authors proposed an anti-blocking type swirling flow noise reduction joint, which is composed of a clearing port and an outer sealing cover, where one end of the clearing port is connected with the middle of the joint body through an arc.
Abstract: The utility model relates to a building drainage system pipe connecting piece, in particular to an anti-blocking type swirling flow noise reduction joint. The anti-blocking type swirling flow noise reduction joint comprises a joint body and three bell mouths, wherein the outer diameter of the joint body is larger than that of the three bell mouths, one end of the joint body is connected with one end of the first bell mouth through a bevel, the other end of the joint body is connected with one end of the second bell mouth through a funnel-shaped connector, swirling flow blades are arranged on the inner wall of the funnel-shaped connector, and the middle of the joint body is connected with one end of the third bell mouth through a third connector. The anti-blocking type swirling flow noise reduction joint further comprises a clearing port and an outer sealing cover, wherein one end of the clearing port is connected with the middle of the joint body through an arc, external threads are arranged at the other end of the clearing port, internal threads matched with the external threads are arranged in the outer sealing cover, and the outer sealing cover is in threaded connection with the other end of the clearing port. According to the anti-blocking type swirling flow noise reduction joint, due to the design of the clearing port, the problem that in the using process of the swirling flow noise reduction joint, various sundries block a pipe and cannot be cleared away and eliminated is solved, and normal water drainage of the swirling flow noise reduction joint is guaranteed.
5 citations