CN2606205Y

CN2606205Y - Low-noise ventilator

Info

Publication number: CN2606205Y
Application number: CN 02290621
Authority: CN
Inventors: 余习猛
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-23
Filing date: 2002-12-23
Publication date: 2004-03-10
Anticipated expiration: 2012-12-23

Abstract

A low noise ventilator solves the problems of complicated structure or loud noise and surge point in the prior ventilator. The main technical proposal of the utility model is that the integrated machine adopts the simplest structure which comprises four parts: an impeller fan drum (1), an impeller (2), a motor (3), and a tail wind drum (4); with small outside dimension, light weight and full operation and without surge point, the utility model is the best product for transshipping engineering of navy submarines and vessels, and for aeration-cooling, smoke and dust exhaust and air-conditioning in mines, tunnels, hotels, showplaces and industrial and mining enterprises.

Description

Low noise ventilator

The utility model belongs to a kind of environmental protection equipment that uses in people's daily life, the production, relates in particular to a kind of high-efficient low-noise, overall volume novel low-noise sound ventilator little, in light weight, simple in structure.

Before the utility model is made, high-efficient low-noise, overall volume novel low-noise sound ventilator little, in light weight, simple in structure always are the emphasis of blower fan industry development, in order to reach this purpose, domestic and international how tame research unit has all developed the low noise ventilator of different structure characteristics.Wherein, by Huazhong Institute of Technology (existing name the Central China University of Science and Technology) and Yingshan Mountains blower fan factory in XF45.25 № 4 diagonal flow fans of development in 1986 and by the SWF type flow-mixing blower fan of Zhejiang University and Shangyu blower fan factory development in 1996 respectively high-efficient low-noise and simple in structure aspect the advanced representativeness of tool, and captured the state market of inner flow passage tilting ventilator more than 90%, obtained the market favorable comment.Though but the former efficient height, noise are low, structure is too complicated, and manufacture cost is high and do not break away from the pumping point that has that ventilator all exists usually, entirely the defective moved of operating mode.In particular for solving motor radiating, plan requires factory must make a motor stator shell again, the outsourcing motor depressed be press fit into behind the stator among the special stator casing, again special stator casing is press fit into rotor and end cap are installed on the main wind tube, thus, not only improved the complete machine performance when cost of production has influenced Motor Production Test again, even more serious is caused blower fan can not field maintenance, if blower fan breaks down in using, complete blower must be transported to factory just can keep in repair, so its practicability is greatly limited, though obtained national patent but be difficult in recent years to promote the use of, achievements conversion is in semistagnation.Though the latter is simple in structure.Low cost of manufacture some, but owing to its straightedge vane, whole steel sheet welded structure directly cause the low and too noisy of its operational efficiency, and it is for reducing the design that noise adopts the slow-speed of revolution, big plane No., the cost raising that has also caused the increasing of blower fan boundary dimension, manufacture cost to improve and use the fabricating yard, and pumping point is arranged, operating mode operation entirely during overall merit, does not still reach the integrated performance index requirement of high-efficient low-noise blower fan.

The purpose of this utility model just provides a kind of model utility ventilator with above-mentioned high-performance and low-cost composite request.Its main technical schemes is: complete machine is made up of impeller air duct, impeller, motor and tail air duct four parts.The impeller air duct is the whole footing impeller of a camber air duct, and accurate normal surface 3 d impeller places in it; This impeller is by the electric-motor-driving that places in the whole footing reinforcement tail air duct of built-in stator awl circle that is connected with the impeller air duct.The external diameter of described accurate normal surface 3 d impeller is 250-1250mm, and the impeller exterior angle is 20 °～30 °, and the wheel hub inclination angle is 40 °～60 °, and hub ratio is 0.6～0.9,4～10 of the numbers of blade.The whole footing impeller of described camber air duct intake grill external diameter is 280～1450mm, and exhaust outlet external diameter 300～1700mm, radius of the radian are 25～125mm, 20 °～30 ° of taperings, length is 150～750mm, and the center height is 170～880mm, and footing is wide to be 200～1060mm.The whole footing tail air duct load-bearing center of gravity of built-in stator awl circle place has added stiffening ring, its intake grill external diameter is 300～1700mm, internal diameter 200～1050mm, exhaust outlet external diameter 300～1550mm, length is 220～2000mm, footing is wide to be 200～1060mm, and the center height is 1600～900mm, several 10～20 of rear guide vane.The utility model is directly found the solution design low noise 3 d impeller because of adopting accurate normal surface method, reduced the secondary flow noise of blade tip effectively, the eddy current crack of impeller clearance, blade stream interface tail noise, adopt ZL104 " light lapping-in gold " new material to make body simultaneously, reduced effectively body radiated noise, simple structure with the combination of four main levels, little, in light weight, the no pumping point of profile, advantages such as low, the easy installation and maintenance of installation cost, achievements conversion are fast are produced in operating mode operation entirely.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a form structure schematic representation of the present utility model;

Fig. 2 normal surface 3 d impeller structural drawing that is as the criterion;

Fig. 3 is the whole footing impeller of a camber air duct structure;

Fig. 4 is the whole footing reinforcement tail air duct structure of built-in stator awl circle.

Implement the utility model, choosing acoustic damping materials is material aluminium alloy castings impeller 2, air intake tube 1 and tail air duct 4.Cause the oscillation hysteresis loss effect because of ZL104 " light lapping-in gold " can utilize the movable district of its crystals and the interior friction of alloy, make vibrational energy be converted into heat energy, reach the purpose that reduces the parts radiated noise.As to make a flow be 6000M ³The ventilator of/h, choosing power is motor 3 drives impeller 2 work of 4KW, and the external diameter of this impeller is 480mm, and impeller exterior angle 5 is 25 °, and wheel hub inclination angle 6 is 50 °, hub ratio is 0.72,8 of the numbers of blade.Intake grill 7 external diameters of impeller air duct are 500mm, exhaust outlet 8 external diameter 520mm, and radian 9 radiuses are 45mm, and tapering 10 is 25 °, and length is 220mm, and the center height is 250mm, footing 11 is wide to be 260mm.Intake grill 12 external diameters of tail air duct 4 are 520mm, internal diameter 400mm, and exhaust outlet 13 external diameter 480mm, length is 300mm, and footing 11 is wide to be 260mm, and the center height is 250mm, several 15 of rear guide vane.Its efficient is 92%, and noise is 74dB (A), and 70 kilograms of weight, cost are only about 3000 yuan.The utility model can be widely used in navy submarine, the aeration-cooling of engineering and oil, chemical industry, metallurgy, machinery, medicine, grain, mine, tunnel, hotel, theater and other industrial and mining enterprise is adorned in naval vessel and change thereof, smoke evacuation dedusting and air conditioning and other occasion higher to noise requirements have tangible military benefit and society, economic benefit.

Claims

1, a kind of low noise ventilator, it is made up of impeller air duct (1), impeller (2), motor (3), tail air duct (4) four parts, it is characterized in that: impeller air duct (1) is the whole footing impeller of camber air duct, and accurate normal surface 3 d impeller (2) places in it; This impeller is by motor (3) transmission that places in the built-in stator awl whole footing reinforcement tail air duct of circle (4) that is connected with impeller air duct (1).

2, a kind of low noise ventilator according to claim 1, it is characterized in that: the external diameter of described accurate normal surface 3 d impeller (2) is 250-1250mm, and impeller exterior angle (5) are 20 °～30 °, and wheel hub inclination angle (6) are 40 °～60 °, hub ratio is 0.6～0.9,4～10 of the numbers of blade.

3, a kind of low noise ventilator according to claim 1 and 2, it is characterized in that: whole footing impeller air duct intake grill (7) external diameter of described camber is 280～1450mm, exhaust outlet (8) external diameter 300～1700mm, radian (9) radius is 25～125mm, (10) 20 °～30 ° of taperings, length is 150～750mm, and the center height is 170～880mm, and footing (11) is wide to be 200～1060mm.

4, according to claim 1 or 2 or 3 described a kind of low noise ventilators, it is characterized in that: intake grill (12) external diameter of the built-in stator awl whole footing reinforcement tail air duct of circle (4) is 300～1700mm, internal diameter 200～1050mm, exhaust outlet (13) external diameter 300～1550mm, length is 220～2000mm, footing (11) is wide to be 200～1060mm, and the center height is 1600～900mm, and rear guide vane (14) is 10～20.