CN2470723Y

CN2470723Y - Through-flow air curtain

Info

Publication number: CN2470723Y
Application number: CN 01215407
Authority: CN
Inventors: 苏舜辉
Original assignee: Guangzhou City No3 Electrical Equipment Factory
Current assignee: Guangzhou City No3 Electrical Equipment Factory
Priority date: 2001-02-28
Filing date: 2001-02-28
Publication date: 2002-01-09
Anticipated expiration: 2011-02-28

Abstract

A tubular air curtain is composed of a casing, an impeller, as well as the air inlet and outlet. The air inlet opening direction is the same as that of the air outlet. The opening shape of the air inlet is semicircular or rectangular, and the opening angle of the air inlet is in 320 to 360 degrees clockwise on the air inlet opening part. The gas inhaled from the air inlet can easily reach the largest negative pressure area, which can also smoothly enter the impeller working state for 30 degree rotation. Through the accelerated airflow, the turbulence and the eddy current can be inhibited to a minimum, thus the noises is reduced, the strong wind is maintained and the work efficiency is improved. Therefore, the flaws of more turbulence and larger noise of the prior tubular air curtain are resolved.

Description

A kind of tubular air curtain

The utility model relates to a kind of air curtain, particularly a kind of tubular air curtain that adopts the impeller rotation.

Existing air curtain generally has two kinds, and a kind of is the axial-flow type air curtain, sucks air-flow by the top air inlet, quickens the back by blade and is discharged by air outlet, and its air inlet becomes 180 degree angles with air outlet, but structure is complicated, cost is higher; Another kind is tubular air curtain (as shown in Figure 1), according to the fluidics principle, air will become air-flow, must form by acceleration, the air inlet of this air curtain is opened at sidepiece, the opening direction of its opening direction and air outlet is 90 degree, and air is inhaled into the back and quickens to be sent by the bottom air outlet by the through-flow impeller, thereby forms the air door curtain, rotate in a counter-clockwise direction, air inlet becomes 270 degree angles with air outlet, air is after entering above-mentioned air inlet air channel, and wind wheel has the reverse peak suction that flows to of part air-flow when quickening, form disorderly air-flow, and the generation whirlpool, this moment, portion of energy was used as the idle work of negative interaction, caused the exhaust air rate of air curtain to reduce, efficient reduces, and the eddy current that produces increases the air curtain noise, influences result of use.

The purpose of this utility model provides the tubular air curtain of a kind of high efficiency, low noise, big air quantity.

The utility model includes shell, impeller, has unidirectional air inlet and air outlet on the shell, and air sucks from air inlet and quickened the back by impeller and form air-flow, discharges by the air outlet that is in same opening direction with air inlet again.

Air inlet opening angle described in the utility model is with the 320-360 degree that turns clockwise at the opening part of equidirectional air outlet; The effective area of its opening is 1.5-3 a times of air outlet effective area.

The utility model has adopted technique scheme, because air inlet and air outlet are in same opening direction, and the effective area of opening is 1.5-3 times of air outlet, changed original wind inlet channel, can move on to from the air inlet inhaled air on the negative pressuren zone of maximum, make gas be more prone to be inhaled into the air channel, thereby successfully enter the duty of impeller, and formation air-flow, air-flow in the air channel after the rotation of impeller 360 degree, can be quickened by impeller to the utmost, finally just be sent to air outlet and discharge, therefore, the disorderly air-flow of few generation, and the whirlpool that thereupon produces can be suppressed to minimum limit, the prolongation of its acceleration time reduces disorderly air-flow, noise reduces, and keep big air quantity, thus improved the operating efficiency of air curtain, solved existing air curtain because the more noise that produces of disorderly air-flow is bigger, the shortcoming that efficient is lower.Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the structural representation of existing tubular air curtain;

Fig. 2 is a structure cutaway view of the present utility model;

Fig. 3 is the cutaway view of another enforcement structure of the utility model.

As shown in Figure 2: the utility model comprises the shell 1 of air curtain, impeller 4 is fixed on air curtain inside, have air inlet 2 and air outlet 3 on the shell 1, and air inlet 2 is located at same direction with the opening of air outlet 3, its air inlet 2 is the right angle opening, and the opening angle of opening angle and air outlet 3 is clockwise 320-360 degree; The effective area of air inlet 2 openings is

air outlets

3,2 times of the effective area of opening; During work, impeller 4 rotations, form maximum positive voltage district and peak suction in the air curtain, when air when air inlet 2 is inhaled into, gas can directly enter and concentrate on the peak suction preferably, make impeller 4 drive gas and quicken, become than air blast and discharge from air outlet 3 through 360 degree air channel rotations; Because the gas acceleration time is longer, disorderly air-flow and whirlpool can be suppressed to minimum limit, thereby form big air quantity, noise is low, efficient is higher air curtain.

Fig. 3 is identical with the operation principle of Fig. 2, and air inlet 2 is semicircle opening, makes its appearance more attractive in appearance, the opening angle of the opening angle of air inlet 2 and air outlet 3 is the 320-360 degree each other, and in like manner, air inlet 2 sucks gas, after 360 degree rotations of impeller 4, discharge by air outlet 3.

Claims

1, a kind of tubular air curtain, include shell (1), impeller (4), have air inlet (2) and air outlet (3) on the shell (1), air sucks by impeller (4) from air inlet (2) and quickens back formation air-flow, discharge by air outlet (3), it is characterized in that: described air inlet (2) is in the same way with both opening directions of air outlet (3).

2, a kind of tubular air curtain according to claim 1 is characterized in that: the opening angle of described air inlet (2) be opening part at equidirectional air outlet (3) with the 320-360 degree that turns clockwise in.

3, a kind of tubular air curtain according to claim 1 and 2 is characterized in that: described air inlet (2) opening shape is right angle opening or semi-circular opening.

4, a kind of tubular air curtain according to claim 3 is characterized in that: the effective area of described air inlet (2) opening be air outlet (3) opening effective area 1.5-3 doubly.