CN2125750U

CN2125750U - Low-noise energy-saving fan for suction and exhausting of smoke and dust

Info

Publication number: CN2125750U
Application number: CN 92224709
Authority: CN
Inventors: 陈世源
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-12
Filing date: 1992-06-12
Publication date: 1992-12-23

Abstract

The utility model discloses a novel fan which belongs to the technical field of fluid machinery. The utility model comprises an air chamber of rotational flow 1, a jet pipe of airflow 2, a motor 3 and an impeller 4 that is arranged in the jet pipe of airflow 2 and is connected with the axis of the motor 3. The technical features of the utility model are that by using the high velocity airflow produced by the impeller 4, after passing through the nozzle of the jet pipe of airflow 2 that is interconnected with the air chamber of rotational flow 1, the high velocity airflow is formed into the swirling airflow and generates the attractive force in the air chamber of rotational flow 1. The high velocity airflow exhausts the smoke and the dust via the other end of the air chamber of rotational flow 1. The purpose for sucking and exhausting of the smoke and the dust can be gained. The utility model has the advantages of low noise and power saving. The utility model is suitable for producing the products with low noise and power saving, such as various fans, machines for sucking and exhausting cooking fume and aspirators and so on.

Description

Low-noise energy-saving fan for suction and exhausting of smoke and dust

The utility model is an a kind of novel fan system, relates to the fluid machinery technical field.Its technical characteristics is, swirl air chamber with its high velocity air jet pipe of the company of passing through mutually.

Fluid machineries such as existing fan, fume exhaust fan, vacuum cleaner all utilize the direct-connected impeller of motor shaft, produce the purpose that suction power reaches air-supply, suction cigarette, dirt at the impeller two ends during work, have advantage of simple structure.

But this class machinery exists the defective of two aspects: on the one hand, the running wheel diameter is bigger, and the pairing motor speed is higher.Thereby, impeller dynamic response instability during running, it is higher to form noise; On the other hand, the air opening end dynamic pressure that produces during running is excessive, cause the suction of the other end lower, thereby energy dissipation is bigger.The many power consumptions about 30% of every for this reason typhoon machine.

The utility model has adopted the minor diameter impeller, is exclusively used in the high velocity air that small flow is provided, to overcome the defective that the higher and big impeller pairing of AC motor rotating speed causes.And produce stronger suction by the eddy current air-flow that high velocity air forms in swirl air chamber, and low to overcome the intake grill negative pressure, the defective that the exhaust outlet dynamic pressure is excessive.Thereby provide a kind of low noise energy-saving type smoke and dust.

The utility model is to realize like this.Promptly rotate in the air-flow jet pipe by motor band small impeller, producing flow velocity is that 8～35 meter per seconds, flow are at 0.0008 meter ³/ second above air-flow with after swirl air chamber tangentially passes through the spout that is connected to form mutually, produces high curl eddy current through the air-flow jet pipe in swirl air chamber, under this similar spout wind action, an end of swirl air chamber produces bigger negative pressuren zone, suction cigarette, dirt.The flue dust that sucks rises with eddy airstream, and swirl air chamber one end that the eddy flow after utilizing the characteristic of vortex axis mutability will be with cigarette, dirt mixed is discharged conduit at the double as flue dust discharges.

The utility model comparison prior art has following advantage and good effect:

1, owing to adopted the AC motor pairing of small impeller and smaller power, be exclusively used in the high velocity air of generation small flow, with the situation of the equal suction of existing blower fan under, can economize on electricity about 40～50%.

2, because impeller diameter is little, and dynamic rate and dynamic balancing are survivable, and suction is that swirling flow produces, complete machine work peace and quiet when work.Noise can reduce more than 80%.

3, because impeller and motor volume reduce, and weight and machine volume can reduce, thereby manufacture cost can reduce about 30%.

The utility model has an accompanying drawing.

Figure is the critical piece perspective view of suction cigarette, dirt machine.

The utility model will be done following being described in further detail in conjunction with the accompanying drawings:

Among the figure: the 1st, swirl air chamber, double as air draft conduit;

The 2nd, the air-flow jet pipe, it tangentially passes through mutually to be communicated with swirl air chamber 1 and forms the jet flow passage;

The 3rd, AC motor, voltage 220V, 5～15 watts of power; The 4th, impeller, diameter are 25～45 millimeters; Impeller and motor shaft link, and place the tail end of air-flow jet pipe 2.

Claims

1, a kind of smoke and dust, comprise swirl air chamber (1), air-flow jet pipe (2) motor (3) and the impeller (4) that links with motor (3) axle, it is characterized in that, swirl air chamber (1) double as cigarette, dirt air draft conduit, impeller (4) is installed in the air-flow jet pipe (2), and the spout of air-flow jet pipe (2) tangentially passes through connection mutually with swirl air chamber (1).