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Bi-channel fan

A dual-channel, fan technology, applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of non-adjustable wind speed at the air outlet, inability to achieve graded winnowing, uneven wind speed, etc., to achieve excellent working performance, air The effect of large flow and uniform airflow

Inactive Publication Date: 2010-04-07
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems are: the wind speed of the air outlet is not adjustable, the wind speed is not uniform, and because the existing fan only has one air outlet, it cannot achieve classified winnowing, and its working performance needs to be further improved

Method used

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Examples

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Embodiment Construction

[0011] exist Figure 1-2 In the shown embodiment: the impeller assembly includes a shaft 4 installed on the volute 3 through the bearing, and 5 blades 5 that rotate together with the shaft 4, and the 5 blades 5 are evenly fixed and installed around the shaft 4, and each blade 5 is Perpendicular to the tangent direction of the rotating shaft 4 where the blades 5 are installed, the outer end of each blade 5 near the volute 3 is an arc-shaped backward blade with a radius of 60mm, that is, the center of the arc is in front of the rotation direction of the blade 5, and the arc The tangent line away from the starting point of the volute 3 forms an included angle of 15 degrees with the straight portion of the blade 5 . The cross-section of the air outlet 2 of the fan is a parallelogram, and the bottom plate 6 forming the air outlet 2 is at an angle of 22 degrees to the horizontal. On the inner walls of the two side plates 9 of the air outlet 2 close to the volute 3, arc-shaped guide ...

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PUM

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Abstract

The invention provides a bi-channel fan, comprising a volute casing provided with an air inlet and an air outlet and a vane wheel assembly provided with a rotary shaft arranged at the volute casing by a bearing in a penetrated manner and multiple vanes rotating together with the rotary shaft. The fan is characterized in that the cross section of the air outlet is in a parallelograms shape, a base plate forming the air outlet has an included angle of 22-25 degrees with the horizontal plane; arc-shaped guided grooves are oppositely arranged on inner walls of two lateral plates of the volute casing close to the air outlet; a movable clapboard and a fixed clapboard are additionally arranged in the air outlet to separate the air outlet into an upper airduct and a lower airduct; one end of the movable clapboard is hinged with one end of the fixed clapboard, the end part at the other end of the movable clapboard close to the inner wall of the two lateral plates is arranged in an arc-shaped groove flexibly; the fixed clapboard and the base plate are in parallel; and the two lateral sides and the inner wall of the two lateral sides are fixedly connected. By additionally arranging the movable clapboard and the fixed clapboard of which each end is hinged respectively in the fan and matching with the arc-shaped guide groove to separate the air outlet into an upper airduct and a lower airduct, wind velocity, wind quality and wind direction in the upper airduct and the lower airduct can be adjusted with excellent work performance.

Description

technical field [0001] The invention provides a double-channel blower, which is used in the technical field of cleaning and classifying machinery. Background technique [0002] Existing fans are mainly composed of the volute of the air inlet and outlet and the impeller assembly, wherein the impeller assembly is composed of a flange connected to the side plate, a rotating shaft and a plurality of straight blades, and the plurality of straight blades are fixedly connected at a certain distance On the fan shaft, the function of the flange is to fix the impeller assembly and the volute. During its working process, the fan is driven by the motor to drive the impeller assembly to rotate in the volute, the gas is sucked by both ends of the impeller assembly, the blades force the gas to rotate, and do work on the gas to increase its energy. The gas under the action of centrifugal force It is thrown out around the rotating shaft, and the speed energy is converted into pressure energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/08F04D29/42F04D29/30
CPCF04D29/462F05D2250/52
Inventor 郭志东任传波杜瑞成
Owner SHANDONG UNIV OF TECH