CN2191305Y

CN2191305Y - Pneumatic fan

Info

Publication number: CN2191305Y
Application number: CN 93247485
Authority: CN
Inventors: 侴乔力; 程曙霞
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-10
Filing date: 1993-12-10
Publication date: 1995-03-08
Anticipated expiration: 2003-12-10

Abstract

A pneumatic fan belongs to the technical field of utilization of natural wind energy. The wind pipe is characterized in that a fan blade and a supporting shaft thereof are arranged at a wind pipe opening, a windmill mechanism is arranged outside the wind pipe, a wind wheel shaft and the fan shaft are parallel to each other, acceleration transmission is arranged between the two shafts, and when the wind wheel rotates by natural wind, the fan shaft is driven to rotate by the transmission mechanism, so that the aim of exhausting or air intake is fulfilled. The fan is used for ventilation or air conditioning engineering, not only saves electric energy, but also beautifies buildings.

Description

Pneumatic fan

The utility model relates to the technology of utilizing of natural wind energy.

In the prior art, obtain using at windy area by the air intake apparatus of the bend pipe down with the wind of being with tuning weathercock and rotating mechanism as building.But the technique process that utilizes wind energy to carry out exhaust is difficult to realization, and the existing venting gas appliance of wind energy that utilizes all exists twice conversion of wind energy between dynamic pressure and static pressure, and energy loss is very big, and exhaust air rate is very low, therefore is not used widely.

The purpose of this utility model is to provide a kind of suction fan and air inlet machine that utilizes natural wind energy, adopts rational mechanical structure, thereby has improved Wind Power Utilization efficient greatly.

The purpose of this utility model is realized by following mode.

Described blower fan, include airduct and rotating mechanism thereof, the mouth of pipe place that it is characterized in that described airduct is provided with the fan blade that is used for air inlet or exhaust and is supported on blower fan axle on the airduct inwall, also be provided with the windmill mechanism that comprises wind wheel and rotor shaft nearby at the airduct mouth of pipe, blower fan axle and rotor shaft are parallel to each other, be provided with multiplying gear between two, for example gear transmission, the rotating ratio of blower fan axle and rotor shaft is the situation of bend pipe greater than 1. for airduct, owing to be provided with rotational structure between bend pipe bottom and the ventilation standpipe, bend pipe can be rotated relative to the standpipe that ventilates; Rotor shaft in the described windmill mechanism is bearing in bend pipe and is linked to be on the whole support or casing wall, and wind wheel is arranged on the back side of bend pipe, and rotor shaft is horizontally disposed with; When as the exhaust purpose, on bend pipe, also the tuning weathercock need be set, always be in rotary state down with the wind to guarantee wind wheel; When being used for the air inlet purpose, can save the tuning weathercock, come tuning with windmill itself, make the bend pipe mouth of pipe be in state down with the wind.For airduct is the uprise situation, becomes the rotor shaft of vertical can be bearing on the airduct inwall, but also separate support on special stand.

At windy area, use the utility model to substitute existing electricity and drive roof ventilator, be used for the heating ventilation and air-conditioning engineering, not only saved electric energy, and, made the richer anger of building because windmill special formed beautified building.

Be further described below by embodiment and accompanying drawing.

Fig. 1 is that the utility model is used for the bending airduct and is the example structure schematic representation of purpose with the exhaust.Among the figure, the joint of bend pipe (1) bottom and ventilation standpipe (2) is provided with and relatively rotates mechanism (3), wind wheel (5) is fixedly mounted on the rotor shaft (9), gearbox (4) in order to the wind-wheel supporting axle connects into integral body with bend pipe (1), wind wheel is located at the bend pipe back, blower fan axle (8) stretches out bend pipe and enters in gearbox (4) body, gearwheel (7) on small gear on this (6) and the rotor shaft is meshing with each other, the top of bend pipe is fixed with a tuning weathercock (10), weathercock plate face is parallel with rotor shaft, under the effect of tuning weathercock, wind wheel always facings the wind and rotates, the rotation of rotor shaft drives the blower fan axle through gear transmission and executes commentaries on classics, and fan blade (11) is fixed on the blower fan axle, and the rotating drive inner air tube of fan blade is discharged.(12) be balancing weight, its effect is to guarantee the center of gravity of devices such as bend pipe and windmill mechanism on the axle center of ventilation standpipe, so that bend pipe rotates and keep total stable.Arrow is represented air current flow direction in the bend pipe among the figure.

In the present embodiment, when the wind wheel blade number is 2, rotor diameter is 2m, is under the condition of 6m/s at natural wind speed, and the drive diameter is 0.3m, the number of blade is 4 draught fan impeller rotation, rotating ratio is 5, and this moment, wind speed round was 600r/min, and the draught fan impeller rotating speed is 3000r/min, according to actual measurement, the exhaust air rate of this blower fan can reach 1950m ³/ h, the blower fan total head is 184pa, its output power is 144w.

Fig. 2 is that the utility model is used for the bending airduct and is the example structure schematic representation of purpose with the air inlet.Among the figure, the joint of bend pipe (1) bottom and ventilation standpipe (2) is provided with and relatively rotates mechanism, and the windmill that is located at the bend pipe back plays the tuning effect simultaneously, to guarantee that the bend pipe mouth of pipe can be in face of wind direction.(12) be balancing weight, its effect is to guarantee that the center of gravity of devices such as bend pipe and windmill mechanism is on the axle center of ventilation standpipe equally.Arrow is represented the air current flow direction among the figure.

Fig. 3 is that the utility model is used for vertical airduct and is purpose example structure schematic representation with the exhaust.Among the figure, (11) are fan blade, and (8) are the blower fan axle, and (7) and (6) for being used for the big small gear of speedup transmission, (13) are the vertical pivot wind wheel, and it is fixed on the rotor shaft (9), rotor shaft and blower fan axle all be by bracket supports on the airduct inwall.Arrow is represented the air current flow direction among the figure.

Claims

1, a kind of Pneumatic fan, include airduct and rotating mechanism thereof, it is characterized in that described airduct mouth of pipe place is provided with fan blade and is bearing in blower fan axle on the airduct inwall, be provided with a windmill mechanism that comprises wind wheel and rotor shaft in the airduct outside, rotor shaft and blower fan axle are parallel to each other, be provided with multiplying gear between the diaxon, the rotating ratio of blower fan axle and rotor shaft is greater than 1.

2, Pneumatic fan as claimed in claim 1, when it is characterized in that described airduct is bend pipe, the rotor shaft in its windmill mechanism is bearing on the support or casing that fuses with bend pipe.