CN2038958U - Axial flow type electric fan - Google Patents

Abstract

The utility model relates to an efficient and energy-saving radial-flow ventilator, which adopts a meridian expediting type impeller structure. The vane of the efficient and energy-saving radial-flow ventilator is designed to be multi-curve-shaped; the inner cylinder of the external case is provided with a static vane, and the dynamic and static match can be formed. Simultaneously, the meridian passage of the working wheel is in convergence-shaped; the energy saving effect is remarkable; the working noise is small, and the anti-breaking performance is improved. In addition, the utility model which has the advantages of light weight, small size, and convenient operation is an ideal ventilating and dust-removing device for a mine, air-defence engineering, or a tunnel.

Description

Axial flow type electric fan

The utility model relates to a kind of ventilator, specifically is a kind of energy-conservation propeller fan.

Present old-fashioned propeller fan is mainly used in the ventilation dust discharge in mine, civil air defense constructions and installations or tunnel, it is made of motor movable vane wheel, wind collection, casing etc., its movable vane impeller blade is the general curve type, no stator blade, efficient operating mode working area scope is little, and efficient is lower, it is higher to consume energy, anti-breaking fragility is poor, and volume is bigger, and noise is big.

The utility model is in order to overcome above-mentioned deficiency of the prior art, proposed a kind of energy-efficiently, has certain anti-fracture performance and the little propeller fan of noise.

The purpose of this utility model can reach by following measure: adopt the three-dimensional flow blower fan structure: adopt meridian (axially) accelerating type blade wheel structure 1., its Blade Design becomes each coordinate points difference of arbitrary section and sees it all is curved surface from different perspectives, and promptly blade is many curvecd surface type; 2. the inner core at shell is provided with stator blade, forms sound and cooperates.

The utility model also has following characteristics: 1. its active wheel meridian passage is convergent contour, and axial wind speed is increased progressively to outlet by the active wheel import; 2. the reinforcement guide ring forwardly is set, to strengthen the anti-fracture performance of blower fan; 3. on the exhaust outlet shell, set up a flange plate, to strengthen shell, convenient carrying.

Fig. 1 is the complete machine schematic representation.

The last figure of Fig. 2 is a movable vane wheel front view, and figure below is a movable vane wheel sectional view.

Fig. 3 is the wing figure of the arbitrary section of movable vane impeller blade.

1 is wind collection among the figure, the 2nd, and movable vane wheel (active wheel), the 3rd, main wind tube (comprising stator blade), the 4th, motor, the 5th, Diffuser core tube, the 6th, Diffuser shell.

Compared with prior art, the utlity model has following advantage:

1. because the structure that adopts meridian accelerating type impeller and many shaped forms blade and convergent contour Meridian Passage to combine makes operating efficiency improve 7%, energy-saving effect is remarkable;

2. operating noise is little, descends about 10 decibels than similar advanced product noise;

3. adopt many curveds blade structure that the anti-fracture performance of blower fan is improved greatly, steady working condition expanded range about 20%;

4. this machine is in light weight, volume is little, convenient in carrying, running is steadily reliable, and can be equipped with garden cylindrical outer cover or two kinds of Diffusers of conical shell, can directly connect metal mine light air tube commonly used and not need to do in addition joint by the two, extremely easy to use, be the ideal equipment of mine, civil air defense constructions and installations or tunnel ventilation dust discharge.

Claims (3)

1, a kind of propeller fan is made of motor, movable vane wheel, wind collection, casing etc., it is characterized in that:

A, employing meridian (axially) accelerating type blade wheel structure, the impeller upper blade is many curved face types; B, stator blade is set at the inner core of shell.

2, ventilator as claimed in claim 1 is characterized in that: the meridian passage of active wheel is a convergent contour.

3, ventilator as claimed in claim 1 is characterized in that the front portion is provided with the reinforcement guide ring in tube.

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