CN1664376A

CN1664376A - Blower

Info

Publication number: CN1664376A
Application number: CN2005100531711A
Authority: CN
Inventors: 田积欣公; 酒井浩一
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2004-03-05
Filing date: 2005-03-03
Publication date: 2005-09-07
Anticipated expiration: 2025-03-03
Also published as: EP1574716A1; EP1574716B1; CN100485193C; ES2309608T3

Abstract

It is an object of the present invention to provide a blower having a plurality of blades radially disposed between a hub and a shroud, in which a separation region of air from a negative pressure surface of the blade can further be reduced. An outer periphery of the negative pressure surface of the blade is formed with a substantially half-wing shaped projection. Airflow which is once separated again adheres to the projection and flows along the blade, turbulence on the discharge side is reduced, noise is reduced, and volume of air is increased.

Description

Gas fan

Technical field

The present invention relates to the wheeled gas fan of centrifugal vortex.

Background technique

Hang in the air conditioner and various air interchanger of mo(u)ld bottom half and ceiling flush type at ceiling board, used the wheeled gas fan of centrifugal vortex.

Traditional gas fan such as Figure 20～(the Japan Patent spy opens 2001-263294) shown in Figure 23

In general, this gas fan as shown in figure 20, the solid of rotation 2 that drives by motor 1 rotation is by wheel hub 3, radially be arranged on a plurality of plates 4 on these wheel hub 3 peripheries and be configured in the opposite side of described wheel hub 3 and the guard shield 5 of described plate 4 mutual combinations is constituted.

In this structure, when present dynasty's arrow A direction was rotated, shown in the hachure B among Figure 21, near the connecting part of plate 4 and guard shield 5, peeling off of air-flow can take place in the suction surface of wheel hub 3, so noise is big.

For this reason, as Figure 22 and shown in Figure 23, the shape of guard shield 5 has been made step-like, making between the adjacent described plate 4 becomes plane of inclination 6, reducing the air stripping area from described plate 4 suction surfaces, thereby realizes the reduction of noise.

Though adopt Figure 22 and structure shown in Figure 23 can reduce noise, make guard shield 5 step-like and formed plane of inclination 6, air turbulence 7 can take place in this part.

Summary of the invention

In order to address the above problem, the object of the invention is to provide the gas fan that can further reduce from the stripping area of the suction surface air of plate.

Gas fan of the present invention disposes radial a plurality of plate between wheel hub and guard shield, it is characterized in that, at the suction surface peripheral part of described plate, is formed with the roughly projection of half wing plate shape from described shroud to described hub side.

Again, gas fan of the present invention disposes radial a plurality of plate between wheel hub and guard shield, it is characterized in that, at the suction surface peripheral part of described plate, be formed with the projection of the roughly half wing plate shape that reduces to described hub side height from described shroud from described shroud to described hub side.

Again, gas fan of the present invention, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, this projection is identical from described shroud to described hub side height, and the width from interior all sides of described wheel hub towards the periphery side direction reduces to described hub side from described shroud.

Again, gas fan of the present invention disposes radial a plurality of plate between wheel hub and guard shield, it is characterized in that, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, and this projection is formed up to the way from the direction of described shroud to described hub side.

Again, gas fan of the present invention, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, this projection is formed up to the way from the direction of described shroud to described hub side, and, reduce to described hub side height from described shroud.

Again, gas fan of the present invention, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that, be formed with the roughly projection of half wing plate shape at the suction surface peripheral part of described plate, this projection is formed up to the way from the direction of described shroud to described hub side, and, reduce to described hub side height from described shroud, simultaneously, width from interior all sides of described wheel hub towards the periphery side direction reduces to described hub side from described shroud.

Gas fan of the present invention, between wheel hub and guard shield, dispose radial a plurality of plate, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, the air-flow of temporarily peeling off is attached to projection once more, moving along plate current, the turbulent flow of exhaust end be can reduce, noise performance and air quantity performance improved.

The simple declaration of accompanying drawing

Fig. 1 is the stereogram of the gas fan of (example 1) of the present invention.

Fig. 2 is the sectional drawing of the plate of same example.

Fig. 3 is the enlarged view of wanting portion of Fig. 1.

Fig. 4 is the sectional drawing of the plan view of plate of same example and top, central authorities, bottom.

Fig. 5 is the stereogram of the gas fan of (example 2) of the present invention.

Fig. 6 is the enlarged view of wanting portion of Fig. 5.

Fig. 7 is the sectional drawing of the plan view of plate of same example and top, central authorities, bottom.

Fig. 8 is the stereogram of the gas fan of (example 3) of the present invention.

Fig. 9 is the enlarged view of wanting portion of Fig. 8.

Figure 10 is the sectional drawing of the plan view of plate of same example and top, central authorities, bottom.

Figure 11 is the stereogram of the gas fan of (example 4) of the present invention.

Figure 12 is the enlarged view of wanting portion of Figure 11.

Figure 13 is the sectional drawing of the plan view of plate of same example and top, central authorities, bottom.

Figure 14 is the stereogram of the gas fan of (example 5) of the present invention.

Figure 15 is the enlarged view of wanting portion of Figure 14.

Figure 16 is the sectional drawing of the plan view of plate of same example and top, central authorities, bottom.

Figure 17 is the stereogram of the gas fan of (example 6) of the present invention.

Figure 18 is the enlarged view of wanting portion of Figure 17.

Figure 19 is the sectional drawing of the plan view of plate of same example and top, central authorities, bottom.

Figure 20 is the sectional drawing of traditional gas fan.

Figure 21 is the plan view of same conventional case.

Figure 22 is the stereogram of another conventional case.

Figure 23 is the plan view of Figure 22.

Figure 24 is the sectional drawing of the plan view of plate of (example 7) of the present invention and top, central part.

Embodiment

Below with reference to Fig. 1～Figure 19 each example of the present invention is described.

(example 1)

The gas fan that Fig. 1～Fig. 4 represents (example 1) of the present invention.

The solid of rotation 2 that drives by motor 1 rotation as shown in figure 20, by wheel hub 3, radially be arranged on a plurality of plates 4 on these wheel hub 3 peripheries and be installed in the opposite side of described wheel hub 3 and the guard shield 5 that combines with described a plurality of plates 4 is constituted.

Arrow A is represented sense of rotation, is formed with the roughly projection 8 of half wing plate shape at the suction surface peripheral part of described plate 4.The section of Fig. 2 display plate 4, imaginary line 9 expressions do not form traditional plate shape of described protruding 8.The part of the maximum height of projection 8 is configured in the outside from the substantial middle 10 of projection 8.

The detail shape of the projection 8 that forms on Fig. 3 and Fig. 4 display plate 4 and the plate 4, the projection 8 of each plate 4, the width from interior all sides of wheel hub 3 towards the periphery side direction is that the height of plate is all, and identical (W1=W2=W3), has formed identical height (H1=H2=H3).The plan view of the suction surface side of Fig. 4 (a) display plate 4, the section of the top of Fig. 4 (b), (c), (d) difference display plate 4, central authorities, bottom.

Adopt structure like this, owing to be formed with projection 8 in the suction surface side of plate 4, the air-flow of temporarily peeling off adheres to once more, flow along plate 4, therefore, the shape of guard shield 5 is not made the tradition step-likely, can make from the air stripping area of plate 4 suction surfaces minimum yet even resemble.That is, the exhaust end of gas fan does not produce turbulent flow 7 basically, can improve the air quantity performance.

(example 2)

The gas fan that Fig. 5～Fig. 7 represents (example 2) of the present invention.

Fig. 5 represents the stereogram of gas fan, compares with (example 1), and the shape of projection 8 is local different, and other parts are identical.The indicate enlarged view of portion of Fig. 6.

The plan view of the suction surface side of Fig. 7 (a) display plate 4, the section of the top of Fig. 7 (b), (c), (d) difference display plate 4, central authorities, bottom.

The projection 8 of the plate 4 of (example 2), the width from interior all sides of wheel hub 3 towards the periphery side direction are that the height of plate is all, form identical (W1=W2=W3), but it is low more and form (H1＞H2＞H3) to wheel hub 3 sides highly more.

Adopt structure like this, suction surface side at plate 4, because the air-flow of temporarily peeling off of its maximum height is once more attached to the projection 8 of the roughly half wing plate shape in the outside that is disposed at substantial middle in plate height is all, and it is mobile along it, therefore, can reduce air stripping area from plate 4 suction surfaces, and, the height of the projection 8 by reducing wheel hub 3 sides can suppress the degree that air quantity reduces.That is, the exhaust end of gas fan does not produce turbulent flow basically, can improve the air quantity performance.Can obtain to reduce the effect of noise thus again.

(example 3)

The gas fan that Fig. 8～Figure 10 represents (example 3) of the present invention.

Fig. 8 represents the stereogram of gas fan, compares with (example 1), and the shape of projection 8 is local different, and other parts are identical.The indicate enlarged view of portion of Fig. 9.

The plan view of the suction surface side of Figure 10 (a) display plate 4, the section of the top of Figure 10 (b), (c), (d) difference display plate 4, central authorities, bottom.

The projection 8 of the plate 4 of (example 3), in plate height was all, maximum height formed identical (H1=H2=H3), but the width from interior all sides of wheel hub 3 towards the periphery side direction, and is thin more and form (W1＞W2＞W3) to wheel hub 3 sides more.

Adopt structure like this, in the suction surface side, because therefore the air-flow of temporarily peeling off of its maximum height once more on the projection 8 attached to the roughly half wing plate shape in the outside that is disposed at substantial middle, flow along plate 4, can make from the air stripping area of plate 4 suction surfaces minimum in plate height is all.That is, the exhaust end of gas fan does not produce turbulent flow basically, can improve the air quantity performance.And the width of the projection 8 by reducing wheel hub 3 sides can suppress the degree that air quantity reduces.That is, again, the exhaust end of gas fan does not produce turbulent flow basically, can improve the air quantity performance.Can obtain to reduce the effect of noise thus.

(example 4)

The gas fan that Figure 11～Figure 13 represents (example 4) of the present invention.

Figure 11 represents the stereogram of gas fan, compares with (example 1), and the shape of projection 8 is local different, and other parts are identical.The indicate enlarged view of portion of Figure 12.

The plan view of the suction surface side of Figure 13 (a) display plate 4, the section of the top of Figure 13 (b), (c), (d) difference display plate 4, central authorities, bottom.

The projection 8 of the plate 4 of (example 4) is not that to be formed up to plate height all, but is formed up to the way from guard shield 5 sides, the width identical (W1=W2) from interior all sides of wheel hub 3 towards the periphery side direction, and its maximum height forms (H1=H2).

Adopt structure like this, in the suction surface side, because in case the air-flow of peeling off is attached to projection 8 once more, and mobile along it, therefore, can reduce air stripping area from plate 4 suction surfaces, and, by with the length setting of projection 8 guard shield 5 sides in the appropriate location, can suppress the degree that air quantity reduces.That is, again, the exhaust end of gas fan does not produce turbulent flow basically, can improve the air quantity performance.Can obtain to reduce the effect of noise thus.

(example 5)

The gas fan that Figure 14～Figure 16 represents (example 5) of the present invention.

Figure 14 represents the stereogram of gas fan, compares with (example 1), and the shape of projection 8 is local different, and other parts are identical.The indicate enlarged view of portion of Figure 15.

The plan view of the suction surface side of Figure 16 (a) display plate 4, the section of the top of Figure 16 (b), (c), (d) difference display plate 4, central authorities, bottom.

The projection 8 of the plate 4 of (example 5) is not that to be formed up to plate height all, but is formed up to the way from guard shield 5 sides, from interior all sides of wheel hub 3 towards the width of periphery side direction same (W1=W2), and its maximum height is low more to wheel hub 3 sides more, form (H1＞H2).

Adopt structure like this, in the suction surface side, because in case the air-flow of peeling off is attached to projection 8 once more, flow along it, therefore, can reduce air stripping area from plate 4 suction surfaces, and, by with the length setting of projection 8 guard shield 5 sides in the appropriate location and the height that reduces wheel hub 3 sides, can suppress the degree that air quantity reduces.That is, again, the exhaust end of gas fan does not produce turbulent flow basically, can improve the air quantity performance.Therefore, can increase (example 1)～effect of (example 4), can realize the raising of low noiseization and air quantity performance.

(example 6)

The gas fan that Figure 17～Figure 19 represents (example 6) of the present invention.

Figure 17 represents the stereogram of gas fan, compares with (example 1), and the shape of projection 8 is local different, and other parts are identical.The indicate enlarged view of portion of Figure 18.

The plan view of the suction surface side of Figure 19 (a) display plate 4, the section of the top of Figure 19 (b), (c), (d) difference display plate 4, central authorities, bottom.

The projection 8 of the plate 4 of (example 6) is not that to be formed up to plate height all, but is formed up to the way from guard shield 5 sides, and the width from interior all sides of wheel hub 3 towards the periphery side direction is that little (W1＞W2), its maximum height forms identical (H1=H2) to wheel hub 3 sides.

Adopt structure like this, in the suction surface side, owing on projection 8, adhere to the air-flow of temporarily peeling off once more, and it is mobile along it, therefore, can reduce air stripping area from plate 4 suction surfaces, and, by with the length setting of projection 8 guard shield 5 sides in the appropriate location and the width that reduces the projection 8 of wheel hub 3 sides, can suppress the degree that air quantity reduces.That is, again, the exhaust end of gas fan does not produce turbulent flow basically, can improve the air quantity performance.Can obtain to reduce the effect of noise thus again.Therefore, can increase (example 1)～effect of (example 4), can realize the raising of low noiseization and air quantity performance.

(example 7)

Figure 24 represents another concrete example of Figure 11～shown in Figure 13 (example 4).

Shown in the suction surface side of the plate 4 shown in Figure 24 (a), the plate shape of K1-K1 section by being formed up to the projection 8 the way from guard shield 5 sides is shown in Figure 24 (b), the front edge side F1 of slave plate 4 gently increases fin thickness along trailing edge side E1, become the maximum value of plate fin thickness at a P1 place, oppositely reduce mild point of arrival P2 then.The fin thickness of suction surface side is increased,, become the maximum fin thickness point on the trailing edge side E1 of P2 at a P3 place.By be formed up to the plate shape of K2-K2 section of the projection 8 the way from guard shield 5 sides, formed the shape shown in Figure 24 (c) equally.

Like this, the plate 4 of (example 7), with the way from front edge side F1 to trailing edge side E1 in the described P2 on projection 8 borders, become the thin shape in fin thickness centre.

That is, between the trailing edge side E1 being projection 8, the position of maximum fin thickness point (some P3) is configured in the position (outside of gas fan) that is close to trailing edge side E1 from described protruding 8 substantial middle 10 from a P2.

By making this shape, flow air is gone up on plate 4 surfaces, even for example taken place to peel off, also can be attached to the surface of plate 4 reliably once more, so can suppress the generation of eddy current, can reduce noise.

This (example 7) is another concrete example of (example 4), and the shape of the shape of the projection 8 of the plate shown in Figure 74 in the shape of the projection 8 of the plate shown in Figure 44 in (example 1), (example 2), the projection 8 of the plate shown in Figure 10 4 in (example 3) is also identical.

Utilizability on the industry

Can be used in the air-supply that ceiling hangs the air conditioner of mo(u)ld bottom half and ceiling flush type and various air interchangers etc. Machine.

Claims

1. a gas fan disposes radial a plurality of plate between wheel hub and guard shield, it is characterized in that, at the suction surface peripheral part of described plate, is formed with the roughly projection of half wing plate shape from described shroud to described hub side.

2. gas fan, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that,, be formed with the projection of the roughly half wing plate shape that reduces to described hub side height from described shroud from described shroud to described hub side at the suction surface peripheral part of described plate.

3. gas fan, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, this protruding height is identical from described shroud to described hub side, width from interior all sides of described wheel hub towards the periphery side direction reduces to described hub side from described shroud.

4. gas fan, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that be formed with the roughly projection of half wing plate shape at the peripheral part of the suction surface of described plate, this projection is formed up to the way from the direction of described shroud to described hub side.

5. gas fan, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, this projection is formed up to the way from the direction of described shroud to described hub side, and height reduces to described hub side from described shroud.

6. gas fan, between wheel hub and guard shield, dispose radial a plurality of plate, it is characterized in that, suction surface peripheral part at described plate is formed with the roughly projection of half wing plate shape, this projection is formed up to the way from the direction of described shroud to described hub side, and highly reduces to described hub side from described shroud, simultaneously, width from interior all sides of described wheel hub towards the periphery side direction reduces to described hub side from described shroud.