CN105793578A

CN105793578A - Fan and outdoor unit equipped with same

Info

Publication number: CN105793578A
Application number: CN201480066248.6A
Authority: CN
Inventors: 木田琢己; 杉尾孝; 石曾根司; 盐谷优
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2013-12-04
Filing date: 2014-12-02
Publication date: 2016-07-20
Anticipated expiration: 2034-12-02
Also published as: CN108708877B; CN110985445B; CN110985445A; CN108708877A; WO2015083371A1; CN105793578B

Abstract

In the present invention, the following are provided: a rotor vane (5) having a rotating hub (3) that has a rotating axle (2), and a plurality of rotating blades (4) provided around the rotating hub (3); and a stator vane (8) provided on the discharge side of the rotor vane (5) and having a fixed hub (6) and a plurality of fixed blades (7) provided around the fixed hub (6). Also, to match the outflow of air from the rotor vane (5) where a main flow of air concentrates in the area outside of the center of the rotating blades (4), the fixed blades (7) have a larger attachment angle outside a central portion in the radial direction of the fixed blades (7), as compared to the attachment angle of the fixed blades (7) towards the fixed hub (6) relative to the central portion of the fixed blades (7).

Description

Blower fan and the outdoor unit being mounted with this blower fan

Technical field

The present invention relates to blower fan, the blower fan particularly to the outdoor unit being loaded into the refrigerating plant such as air conditioner and Teat pump boiler.

Background technology

In recent years, in the refrigerating plant of air conditioner etc., in quickly carrying out as the countermeasure energy-saving of greenhouse effects of the earth, it is necessary to reduce the input power of equipment.Furthermore, it desired to improve the heating comfort of air conditioner, so necessarily requiring the further high performance of heat exchanger of outdoor unit and being loaded into the low noise of blower fan of outdoor unit, strong wind quantization.

In prior art, in the blower fan of outdoor unit, use the blower fan of axial-flow type or diagonal flow type from the viewpoint of low noise, strong wind quantization, but, improve the wind pushing performance of blower fan as outdoor unit while requiring to maintain low noise further.

As such technology making blower fan low noise, strong wind quantify, it is provided with in the downstream of propeller fan (blower fan) and the dynamic pressure with air stream can be converted to static pressure recoverable static pressure recovery fin (quiet fin) (referring for example to patent documentation 1).

Figure 13 indicates that the structure chart of the outdoor unit of prior art.In fig. 13, outdoor unit 101 includes: propeller fan 105；It is arranged on the seal mouth ring (mouthring) 106 of the periphery of propeller fan 105；Fin 107 is reclaimed with the static pressure of the inner side of the discharge side and seal mouth ring 106 that are arranged on propeller fan 105.

Seal mouth ring 106 is positioned at the trailing edge side of the blowout side as propeller fan 105 and the air stream being blown is guided, and is formed with diameter at the rear portion of this seal mouth ring 106 than anterior big expansion blow-off outlet 106a.Static pressure reclaims fin 107 and is positioned at the trailing edge downstream than propeller fan 105.It addition, the chord-length that static pressure reclaims fin 107 is formed as along with going from central part to periphery to become big.

In the outdoor unit that such as above mode is constituted, static pressure reclaims fin 107 by reclaiming becoming the swirling flow of energy loss in circumferential direction as static pressure, by increasing capacitance it is possible to increase axial flow air quantity.It addition, utilize static pressure to reclaim fin 107, it is possible to make the swirling flow from propeller fan 105 slow down, it is possible to reduce noise.

But, in the rotating vane (dynamic fin) of propeller fan 105 blower fan such as grade used at the outdoor unit etc. of prior art, main flow concentrates on radial direction position and the ratio substantial middle outer circumferential side side of blade, so convolution direction composition becomes big and direction of principal axis composition also becomes big, the inflow velocity of the wake flow carrying out automatic fin is also bigger.

Therefore, there is following problem as prior art: reclaim the chord-length of fin 107 along with, when going to become big from central part to periphery, the loss caused because of the increase of the tail width of blade surface friction loss and wake flow can increase when making quiet fin and static pressure.

Additionally, leakage stream between rotating vane and the seal mouth ring 106 being referred to as oral area (orifice) of dynamic fin and propeller fan 105 and the impact of fin end eddy current produced at the fin end of dynamic fin, also arrive at the leading edge of the static pressure recovery fin 107 in downstream.This impact is particular with going from the central part of quiet fin to outer circumference end to become big.Therefore, there is following problem as prior art: when the chord-length that static pressure reclaims the outer circumference end of fin 107 is bigger, hinder the impact of flowing to become big, with the loss increase caused because of disorder correspondingly, it is impossible to effectively convolution direction composition is reclaimed as static pressure.

Additionally, in the rotating vane (dynamic fin) of the blower fan of propeller fan 105 grade used at the outdoor unit etc. of prior art, reclaim the difference of the established angle of fixing blade of fin 107 grade, shape according to static pressure, there is horizontal part at the leading edge of fixing blade or trailing edge etc..Following problem is there is in such horizontal part when existing.

When the blower fan with fixing blade being arranged without or in cold storage warehouse etc., such as when the environment temperature that phase in severe winter etc. is below freezing, be deposited on blower fan and circumferential component thereof top snow and frost because of sunshine the time of melting, the water droplet as snowmelt can arrive fixing blade.Then, this water droplet is accumulated in the horizontal part of fixing blade, and water again freezes and is grown to icicle.When the growth of icicle is gone from the leading edge windward side of fixing blade, exist and disturb with dynamic fin, produce abnormal sound, or dynamic fin stops or the problem of breakage.Such problem is when outdoor unit etc. is arranged at and is provided with blower fan in the machine of grade outside room, particularly problematic.

It addition, in the rotating vane (dynamic fin) of propeller fan 105 blower fan such as grade used at the outdoor unit etc. of prior art, have in the rotating vane of quiet fin in the downstream of dynamic fin, there is following problem.That is, the difference according to the position of quiet fin and shape, by quiet fin and blowout grid to dynamic fin side brute force press time, the static pressure of quiet fin reclaims the fixing blade of fin 107 grade and contacts with dynamic fin, it is possible to make fin or quiet fin deform or breakage.

In axial-flow type that the present invention uses at the outdoor unit etc. of air conditioner and Teat pump boiler or the blower fan of diagonal flow type, improve aerodynamic quality so that low noise, strong wind quantify.It addition, utilize the outdoor unit being mounted with blower fan to realize power saving, low noise.

It addition, in the blower fan of the axial-flow type that uses at the outdoor unit etc. of air conditioner and Teat pump boiler of the present invention or diagonal flow type, it is prevented that the generation of the abnormal sound that the generation of ice and growth cause and the stopping of dynamic fin, breakage.It addition, in the outdoor unit being mounted with blower fan, it is prevented that the generation of the abnormal sound that the generation of ice and growth cause and the stopping of dynamic fin, breakage.

It addition, the present invention has in the blower fan of quiet fin in the downstream of low dynamic fin in the blower fan of axial-flow type or diagonal flow type, it is prevented that when being pressed to dynamic fin side brute force by quiet fin, fixing blade contacts with dynamic fin.It addition, in the outdoor unit being mounted with blower fan, it is prevented that fixing blade contacts with dynamic fin when being pressed to dynamic fin side brute force with blowout grid by quiet fin etc..

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2000-130799 publication

Summary of the invention

The blower fan of the present invention has dynamic fin and quiet fin, the fixing blade of quiet fin make the central part outer circumferential side side of the radial direction than fixing blade, relative to the blade angle with the face of central axis, more than than the central part blade angle by anchor hub side.

By adopting this structure, it is possible to outer circumferential side side compared with the central part with the fixing blade of quiet fin, the collision loss of the entrance of the fixing blade of quiet fin is suppressed less, it is possible to efficiently convolution direction composition is recovered as static pressure.

Therefore, the aerodynamic quality of the blower fan of the present invention improves.It addition, the outdoor unit loading blower fan loading the present invention is capable of power saving, low noise.

It addition, the blower fan of the present invention includes dynamic fin, oral area and quiet fin, the fixing blade of quiet fin is arranged to, most between minor diameter part and discharge side peristome at oral area of the direction of principal axis position of the edge of the suction side of fixing blade and the outer circumference end of leading edge.

By adopting this structure, carry out the air-flow that the convolution direction composition of automatic fin is strong, along with that go to the outlet opening portion of oral area and before transferring the flowing extended in the radial direction to, it is flowed between the fin of fixing blade of quiet fin, thus it is forced to be converted to axial flowing, it is possible to be recovered as static pressure efficiently.

Additionally, the blower fan of the present invention includes dynamic fin and quiet fin, in quiet fin, edge in the suction side of fixing blade and leading edge are arranged in the fixing blade that arranges than the edge of blowout side and the region of trailing edge position on the lower interval each other, are arranged in the fixing blade that arranges than the region of trailing edge position by the top interval each other more than in leading edge.

According to this structure, water droplet can be reduced and easily assemble, become the generation of ice and the horizontal part of the starting point of growth, without the generation of the abnormal sound caused because of generation and the growth of ice, the stopping of dynamic fin, damaged ground, efficiently convolution direction composition is recovered as static pressure.

Therefore, the blower fan of the present invention is prevented from generation and the growth of ice.It addition, the outdoor unit being mounted with blower fan of the present invention does not produce the generation of abnormal sound because generation and the growth of ice cause, the stopping of dynamic fin, damaged problem.

It addition, the blower fan of the present invention includes dynamic fin and quiet fin, quiet fin has the circular supporting frame centered by rotating shaft in its periphery, and supporting frame and oral area are fixed.

According to this structure, it is possible to prevent when being pressed to dynamic fin side brute force by quiet fin, fixing blade contact with dynamic fin and makes fin and quiet fin deform or breakage.

Therefore, the blower fan of the present invention is prevented from fixing blade and contact with dynamic fin and make fin and quiet fin deform or breakage.It addition, the outdoor unit being mounted with blower fan of the present invention is prevented from making fin and quiet fin deformation or damaged.

Accompanying drawing explanation

Fig. 1 is the meridional section figure of the blower fan of the 1st embodiment of the present invention.

Fig. 2 be the blower fan of the 1st embodiment of the present invention from the front view in terms of discharge side.

Fig. 3 A is the 3A-3A sectional view of Fig. 1.

Fig. 3 B is the 3B-3B sectional view of Fig. 1.

Fig. 3 C is the 3C-3C sectional view of Fig. 1.

Fig. 4 indicates that the explanation figure of the radial direction position of the fixing blade of the blower fan of the 1st embodiment of the present invention and the relation of blade angle.

Fig. 5 indicates that the fixing blade of the 1st embodiment of the present invention and the major part axonometric chart of the connecting portion of supporting frame.

Fig. 6 is the cross-sectional view of the outdoor unit being mounted with blower fan of the 1st embodiment of the present invention.

Fig. 7 is the longitudinal section of another outdoor unit being mounted with blower fan of the 1st embodiment of the present invention.

Fig. 8 is the structure chart of the blower fan of the 2nd embodiment of the present invention.

Fig. 9 be the blower fan of the 2nd embodiment of the present invention from the front view in terms of discharge side.

Figure 10 be the blower fan of the 3rd embodiment of the present invention from the front view in terms of discharge side.

Figure 11 be the blower fan of the 4th embodiment of the present invention from the front view in terms of discharge side.

Figure 12 be the blower fan of the embodiment of the 5th of the present invention from the front view in terms of discharge side.

Figure 13 is the longitudinal section of the outdoor unit of the air conditioner of prior art.

Detailed description of the invention

Hereinafter, with reference to accompanying drawing, embodiments of the present invention are illustrated.Additionally, the present invention is not limited by these embodiments.

(the 1st embodiment)

Fig. 1 is the meridional section figure of the blower fan of the 1st embodiment of the present invention.At this, meridional section figure is the sectional view of the plane that the fixing blade 7 of the rotating vane 4 of dynamic fin 5, quiet fin 8 rotates the central shaft projecting to the rotating shaft 2 or quiet fin 8 comprising dynamic fin 5.It addition, Fig. 2 be the blower fan of present embodiment from the front view in terms of discharge side.

As shown in Figure 1 and Figure 2, blower fan 1 includes dynamic fin 5, and this dynamic fin 5 includes: be installed on the rotation hub 3 of rotating shaft 2；With 2 rotating vanes 4 being arranged on the surrounding rotating hub 3.Discharge side (downstream) at dynamic fin 5 is provided with quiet fin 8, and this quiet fin 8 includes: be positioned at rotate hub 3 coaxial on anchor hub 6；With 13 of the surrounding being arranged on anchor hub 6 fixing blades 7.It addition, be provided with oral area 9 with dynamic fin 5 and quiet fin 8 across the gap of regulation in the position of the periphery of discharge side of dynamic fin 5 and the periphery of the suction side (upstream side) of quiet fin 8.

Rotating shaft 2 is arranged on the suction side of dynamic fin 5, links with the driving axle of the motor 10 that dynamic fin 5 rotates driving.Motor 10 and oral area 9 are all supported in housing (not shown), and thus dynamic fin 5 is adjusted with the relative position of oral area 9 and is kept.It addition, fixing blade 7 is supported in housing (not shown) by supporting frame 11, thus, quiet fin 8 is adjusted with the relative position of oral area 9 and is kept.Supporting frame 11 is provided in the parts of the ring-type of the outer circumferential side of quiet fin 8, forms as one with quiet fin 8.

The hub 3 that rotates of dynamic fin 5 is drum or along with the truncated cone shape going enlarged-diameter to discharge side.The direction of principal axis length rotating hub 3 is configured to shorter than the meridian plane height of the central part of the radial direction of rotating vane 4 (rotating vane 4 of dynamic fin 5 rotates the direction of principal axis length during plane projecting to the rotating shaft 2 comprising dynamic fin 5) h1.

The anchor hub 6 of quiet fin 8 is drum, and its external diameter is the diameter of the end face of the discharge side rotating hub 3, namely identical with rotating diameter maximum in hub 3 diameter.It addition, the direction of principal axis length ratio rotation hub 3 of anchor hub 6 is short.It addition, the direction of principal axis length of anchor hub 6 is roughly the same with the meridian plane height of fixing blade 7 (the fixing blade 7 of quiet fin 8 rotates the direction of principal axis length during plane projecting to the central shaft comprising quiet fin 8) h2.

The external diameter of quiet fin 8 is bigger than the external diameter of dynamic fin 5.That is, the radial direction length of fixing blade 7 is configured to longer than the radial direction length of rotating vane 4.

Oral area 9 has most minor diameter part 9x.In most minor diameter part 9x, it is minimum with the gap of the outer circumference end of the rotating vane 4 of dynamic fin 5.Additionally, in Fig. 1, most minor diameter part 9x is made up of the barrel surface including the line part extended in axial direction with certain diameter, but can also be configured to the circumference not possessing certain diameter of line part.The diameter of oral area 9 expands along with going from most minor diameter part 9x to discharge side, is formed with discharge side peristome 9y in the end of discharge side.It addition, the diameter of oral area 9 expands to suction side also with from most minor diameter part 9x, it is formed with suction side peristome 9z in the end of suction side.

In dynamic fin 5, adjust axial position, so that the outer circumference end of the edge of the discharge side of rotating vane 4 and trailing edge is relative with the most minor diameter part 9x of oral area 9.It addition, in dynamic fin 5, adjust axial position, so that the most minor diameter part 9x rotating end and the oral area 9 of the discharge side of hub 3 is relative or most between minor diameter part 9x and discharge side peristome 9y at oral area 9.

In quiet fin 8, adjust axial position, so that most between minor diameter part 9x and discharge side peristome 9y at oral area 9 of the edge of suction side of fixing blade 7 and the outer circumference end of leading edge.It addition, quiet fin 8 is arranged in the gap S forming regulation between outer circumference end and the oral area 9 of the front edge side of fixing blade 7.Bigger than the external diameter of dynamic fin 5 and oral area 9 the diameter of the external diameter of quiet fin 8 goes to discharge side and expands, and thus gap S is roughly the same with the gap of the most minor diameter part 9x of outer circumference end and the oral area 9 of the trailing edge of the rotating vane 4 of dynamic fin 5.It addition, in quiet fin 8, adjust axial position, so that most between minor diameter part 9x and discharge side peristome 9y at oral area 9 of the end of the suction side of anchor hub 6.

At this, the shape of the fixing blade 7 of quiet fin 8 is described in detail.

As it is shown in figure 1, the meridian plane height h2 of fixing blade 7, substantially certain from the anchor hub side 7a to outer circumference end 7b of the end as anchor hub 6 side.It addition, Fig. 2 is as indicated, on the face vertical with the rotating shaft 2 of dynamic fin 5, the leading edge of fixing blade 7 is obliquely installed relative to radial direction be positioned at the despining direction of the rotating vane 4 of dynamic fin 5 relative to anchor hub side 7a by outer circumference end 7b in the way of.

Fig. 3 A is the 3A-3A cross section of Fig. 1, the cross section of hub side.Fig. 3 B is the 3B-3B cross section of Fig. 1, is the cross section of outer circumferential side.Fig. 3 C is the 3C-3C cross section of Fig. 1, the cross section of outer circumference end.Fig. 3 A～Fig. 3 C indicates that the air stream of the rotating vane 4 in the cross section in same radial location and the cross sectional shape of fixing blade 7 and driven fin 5 discharge and the figure of the relation of the blade angle θ of fixing blade 7.At this, blade angle θ indicates that the angle relative to the face vertical with rotating shaft 2.Fig. 4 indicates that the figure of the radial direction position of fixing blade 7 and the relation of blade angle θ.

As shown in Fig. 3 A～Fig. 3 C, rotating vane 4 has the cross section of the arc-shaped of despining direction epirelief at dynamic fin 5 or wing, is fixed on rotation hub 3 in the way of rotating vane trailing edge 4a is positioned at discharge side obliquely relative to rotating shaft 2.Fixing blade 7 has the cross section in the convex arc-shaped of the direction of rotation of dynamic fin 5 or wing, is fixed on anchor hub 6 with having the blade angle θ that tilts in the way of leading edge 7c is positioned at suction side relative to the face with the central axis of the anchor hub 6 of the central shaft also serving as quiet fin 8.At this, blade angle θ is the edge of the suction side by fixing blade 7 and the horizontal plane angulation of the edge of leading edge 7c and blowout side and trailing edge the 7d straight line linked and the central shaft being perpendicular to anchor hub 6, is more go more to become big angle to the side, despining direction of suction side or dynamic fin 5 from the horizontal plane of the central shaft being perpendicular to anchor hub 6.

And, the blade angle θ of fixing blade 7 is configured to the position of the radial direction according to fixing blade 7 and different.

As shown in Fig. 3 A, Fig. 4, in the end (anchor hub side 7a) that fixing blade 7 contacts with anchor hub 6, blade angle θ a is minimum.And, along with the outer circumferential side of the radial direction to fixing blade 7 goes, blade angle θ expands, as shown in Figure 4, at the central part 7m of fixing blade 7, for blade angle θ m.Along with compared with central part 7m further out week side go, blade angle θ expands further, as shown in Fig. 3 B, Fig. 4, is maximum (blade angle θ b) between the outer circumference end 7b of central part 7m and fixing blade 7.In outer peripheral side compared with the position becoming blade angle θ b, blade angle θ tapers into, and as shown in Fig. 3 C, Fig. 4, is blade angle θ c at the outer circumference end 7b of fixing blade 7.Blade angle θ c is bigger than the blade angle θ a of anchor hub side 7a, less than the blade angle θ m of central part 7m.

That is, ratio blade angle θ b, the θ c of central part 7m outer circumferential side side, more than than the central part 7m blade angle θ ab by anchor hub 6 side.It addition, in ratio central part 7m outer circumferential side side, blade angle θ b is maximum.

And, the meridian plane height of fixing blade 7 is unrelated and approximately fixed with the position of radial direction, the blade angle θ of fixing blade 7 is different according to the position of radial direction, so fixing blade 7 is at the anchor hub side 7a contacted with anchor hub 6, the curvature of circular arc is minimum, and between central part 7m and outer circumference end 7b, the curvature of circular arc is maximum.It addition, the curvature of the circular arc of the fixing blade 7 at outer circumference end 7b place, bigger than the curvature of the circular arc at anchor hub side 7a place, less than the curvature of the circular arc at central part 7m place.It addition, the curvature of the circular arc than central part 7m outer circumferential side side place, big compared with the curvature of the circular arc leaning on anchor hub 6 side place than central part 7m.

Then, the shape of the fixing blade 7 of quiet fin 8 and the connecting portion of supporting frame 11 is described in detail.Fig. 5 is the major part axonometric chart of the connecting portion of the fixing blade 7 of quiet fin 8 in terms of the trailing edge 7d side of fixing blade 7 and supporting frame 11.As it is shown in figure 5, at the outer circumference end 7b of fixing blade 7, be only provided with the extension 12 of the tabular extended in the radial direction by fixing blade 7 in the trailing edge 7d side of fixing blade 7.One face (becoming the face of recessed side in fixing blade 7) of extension 12 is formed with the curvature identical with the concave side of the circular arc of fixing blade 7, and on the other hand, the back side is formed with the face parallel with the central shaft of anchor hub 6.Therefore, the thickness of extension 12 is identical with the thickness of fixing blade 7 at extension trailing edge 12a, but more goes more thickening to extension leading edge 12b side.It addition, the length of the central axis direction of extension 12 (meridional section height) is formed as shorter than the length of the central axis direction of foot 13 described later.It addition, the meridional section height of extension 12 to be formed as the position with radial direction independently substantially certain.

On the other hand, the foot 13 that oriented discharge side is prominent is set at supporting frame 11.Foot 13 is the parts of the tabular that two faces are formed by the face parallel with the central shaft of anchor hub 6, and the thickness of foot 13 is identical with the thickness of fixing blade 7.It addition, the length of the central axis direction of foot 13 is formed as shorter than the meridian plane height h2 of fixing blade 7.It addition, as it is shown in figure 1, foot 13 is arranged in the position supporting and fixing blade 7 of the radial direction becoming outer circumferential side compared with the discharge side peristome 9y of oral area 9.

And, by being engaged in the outer circumferential side end of extension 12 and anchor hub 6 side end of foot 13, the leading edge 7c side of fixing blade 7 forms the gap T of regulation between supporting frame 11, is supported by frame 11 and supports.Additionally, fixing blade 7, extension 12, foot 13, supporting frame 11 form as one, preferred in guaranteeing intensity.

It addition, as it is shown in figure 5, the end 13a of the blowout side of foot 13 is engaged in the way of the trailing edge 7d with the extension trailing edge 12a of the blowout side of extension 12, fixing blade 7 is positioned at the same face.Therefore, the leading edge 7c of fixing blade 7 is prominent to suction side compared with supporting frame 11.It addition, the trailing edge 7d of fixing blade 7 is prominent to discharge side compared with supporting frame 11.

Additionally, as in figure 2 it is shown, the length (the radial direction length of extension 12) that is connected with fixing blade 7 and supporting frame 11 of extension 12, according to installing the position of fixing blade 7 and different.The extension 12 of the fixing blade 7 up and down being positioned at gravity direction is shorter, and the extension of the fixing blade 7 being positioned at other positions is longer.By adopting this structure, it is possible to it is easy to ensure that quiet fin 8 to be held in the enough intensity of supporting frame 11.

In the present embodiment, the fixing blade 7 of quiet fin 8 is fixed in oral area 9 or housing by being arranged on the circular supporting frame 11 centered by rotating shaft of its periphery.Therefore, when being pressed on the direction of dynamic fin 5 at quiet fin 8 etc., it also is able to keep the gap of the regulation between quiet fin 8 and dynamic fin 5, it is possible to prevent the fixing blade 7 of quiet fin 8 from contacting with the rotating vane 4 of dynamic fin 5 and make fin 5 and quiet fin 8 deform or damaged.

Particularly, in the present embodiment, multiple fixing blades 7 include extension 12 and the outer circumference end from extension 12 in the side of oral area 9 upwardly extending foot 13, be held in oral area 9 or housing by extension 12 and foot 13.Therefore, even if being pressed on the direction of dynamic fin 5 at quiet fin 8 and when displacement, also being absorbed displacement by extension 12 and foot 13, it is possible to anti-stop tabs 5 and quiet fin 8 deform or damaged.

For the blower fan that such as above mode is constituted, its action of following description, effect.

First, when utilizing motor 10 to make rotating shaft 2 rotate driving, as in figure 2 it is shown, dynamic fin 5 rotates in the counterclockwise direction, from the side being configured with motor 10, air is guided to dynamic fin 5.Now, utilize the oral area 9 of multiple rotating vane 4 and the surrounding being arranged on rotating vane 4, air is applied dynamic pressure and static pressure.

Then, the air (discharge air-flow) that driven fin 5 is discharged is directed to quiet fin 8.As it is shown on figure 3, the inflow velocity V being directed to the air of quiet fin 8 has angle relative to the direction of principal axis of rotating shaft 2, there is the axial flow direction composition Va flowed in axial direction and the convolution direction composition Vt flowed in the direction of rotation of dynamic fin 5.Axial flow direction composition Va is the speed relevant with air quantity, but convolution direction composition Vt is vertical with direction of principal axis, be circumferential direction composition, so irrelevant with air quantity, be agitation air, when cannot turn to swimmingly in axial direction, become loss energy.

Then, utilize the quiet fin 8 with multiple fixing blade 7, reduce the convolution direction composition discharging air-flow of dynamic fin 5, it is possible to reclaimed as static pressure in convolution direction composition (swirling flow) becoming energy loss, it is possible to improve static pressure efficiency and form air-supply effect.

At this, with the discharge air-flow of the dynamic fin 5 that main flow concentrates on central part outer circumferential side side than the radial direction of rotating vane 4 correspondingly, the blade angle θ of fixing blade 7 is more than than the central part 7m blade angle θ a by anchor hub 6 side than the blade angle θ b of central part 7m outer circumferential side side.Therefore, compared with the region leaning on anchor hub 6 side than central part 7m, the region of the ratio central part 7m outer circumferential side side that the convolution direction composition of the porch of quiet fin 8 is bigger, it is possible to the collision loss of the porch of fixing blade 7 is suppressed less, it is possible to efficiently convolution velocity component is recovered as static pressure.

Additionally, when the structure that dynamic fin 5 is axial-flow type or diagonal flow type, only the discharge side of the rotating vane 4 of dynamic fin 5 is surrounded by oral area 9, produce bigger fin end eddy current in the periphery of rotating vane 4, the discharge air velocity of the outer circumferential side of dynamic fin 5 is greatly reduced.Particularly, by fin end vortes interference, when producing the leakage stream from the gap adverse current of oral area 9 and rotating vane 4 to suction side, the reduction of the direction of principal axis composition discharging air-flow is very big.But, in the present embodiment, correspondingly, it is maximum for making blade angle θ between central part 7m and the outer circumference end 7b of fixing blade 7, the blade angle θ c at the outer circumference end 7b place of fixing blade 7 is less than the central part 7m blade angle θ m located, it is possible to the collision loss by the porch of the outer circumference end 7b of the fixing blade 7 of quiet fin 8, fixing blade 7 suppresses less.

Therefore, can from the central part 7m of fixing blade 7 at outer circumferential side, efficiently convolution velocity component is recovered as static pressure, even and if at the outer circumference end 7b leaking stream and the fixing blade 7 of the impact of fin end eddy current of the rotating vane 4 being easily subject to dynamic fin 5, it is also possible to efficiently convolution velocity component is recovered as static pressure.

In from the anchor hub side 7a of fixing blade 7 to the region that blade angle θ is the best part of outer circumferential side, fixing the blade angle θ of blade 7, particularly inlet angle are consistent with the discharge air-flow angle of dynamic fin 5, even if so not increasing chord-length by increasing the meridian plane height h2 of fixing blade 7, it is also possible to efficiently the convolution velocity component discharging air-flow of dynamic fin 5 is converted to static pressure.

It addition, can more suppress chord-length to make it not extend the closer to the outer circumferential side of fixing blade 7, it is possible to suppress the increase of the loss caused because of the increase of the skin-friction loss of fixing blade 7 and the tail width of wake flow.

Additionally, when the blade angle θ at the outer circumference end 7b place of fixing blade 7 is less than the blade angle θ in the region from central part 7m to outer circumferential side, because of dynamic leakage stream between fin 5 and oral area 9 and the fin end eddy current that produces at the fin end of dynamic fin 5, it is easy to be subject to coming the impact of the angle large variation of the discharge air-flow of the outer circumference end of automatic fin 5.But, in the present embodiment, the meridian plane height h2 of fixing blade 7 is arranged in from anchor hub side 7a to outer circumference end 7b substantially certain, thus, even if near the outer circumference end 7b of fixing blade 7, it is also possible to suppress meridian plane height to make it not extend.Therefore, when can do one's utmost to suppress the chord-length of the outer circumference end 7b of the fixing blade 7 of quiet fin 8 bigger, impact becomes the variation of big flowing, the increase of the loss caused because of disorder can be suppressed, and efficiently the convolution velocity component discharging air-flow at the outer circumference end 7b place of fixing blade 7 is recovered as static pressure.

Additionally, by by fixing blade 7 in the plane vertical with the rotating shaft 2 of dynamic fin 5, outer circumferential side is arranged obliquely relative to the despining direction of hub laterally dynamic fin 5, and the air-flow of discharging of next automatic fin 5 with the position of the radial direction according to fixing blade 7, pass through by the different moment.Therefore, it is possible to the noise produced when making discharge air-flow by fixing blade 7 staggers, it is possible to the size of the noise produced when reducing by quiet fin 8.

Additionally, the gap of the regulation between outer circumference end and the oral area 9 of the rotating vane 4 of dynamic fin 5, go to discharge side peristome 9y from most minor diameter part 9x and expand, and the direction of principal axis position of the outer circumference end of the leading edge of the fixing blade 7 of quiet fin 8 is arranged at oral area 9 most between minor diameter part 9x and discharge side peristome 9y.By adopting such structure, the air-flow (there is the air-flow of radial direction composition) extended in the radial direction along with going to discharge side peristome 9y is transferred to front, it is possible to enable its flow between the fin of fixing blade 7 at the discharge air-flow that the convolution direction composition in the region of the outer circumferential side to outer circumference end that make driven fin 5 is big.Therefore, it is possible to discharge air-flow forced big for convolution direction composition is converted to direction of principal axis composition, it is possible to be effective as static pressure and reclaim.

Additionally, when being direction of principal axis composition by the whole unsteady state operation of air-flow strong for the convolution direction composition near the outer circumference end 7b of the fixing blade 7 of quiet fin 8, the air-flow of the trailing edge 7d side near the outer circumference end 7b of fixing blade 7 and produce contracted flow between the air-flow of the outer circumferential side of quiet fin 8, trailing edge 7d side near the outer circumference end 7b of fixing blade 7, produces not to be converted into the air-flow of static pressure.But, in present embodiment, the gap S of regulation is set between outer circumference end and the oral area 9 of the leading edge 7c side of the fixing blade 7 of quiet fin 8, it is possible to somewhat produce leakage stream wittingly from the pressure face side of leading edge 7c to suction surface side.Thus, it is difficult in the trailing edge 7d side of outer circumference end 7b produce contracted flow, it is possible to be effective as static pressure and reclaim.It addition, can slow down glibly along the discharge side peristome 9y of the expansion of the discharge side of oral area 9 from the leakage stream of the pettiness of the lateral suction side of pressure face of gap S, so flow losses will not increase.

It addition, the fin end eddy current produced near the outer circumference end of rotating vane 4 flows to downstream, when colliding from the outer circumferential side of fixing blade 7 and extension 12, produce disorder.But, in the present embodiment, the extension 12 that quiet fin 8 is extended by the trailing edge 7d side of the outer circumference end 7b only fixing blade 7 is fixed on supporting frame 11, and the leading edge 7c side of fixing blade 7 is not fixed in supporting frame 11.That is, extension 12 is made to be positioned at the trailing edge side of fixing blade 7.Therefore, in the leading edge 7c side of fixing blade 7, it is possible to reduce the disorder of the air-flow at extension 12 place.

Additionally, effect with the fixing blade 7 of above-mentioned oral area 9 is same, the gap T of regulation is set between outer circumference end and the supporting frame 11 of the leading edge 7c side of the fixing blade 7 of quiet fin 8, it is possible to somewhat produce leakage stream wittingly from the pressure face side of leading edge to suction surface side.Thus, it is difficult in the trailing edge 7d side of outer circumference end 7b produce contracted flow, it is possible to be effective as static pressure and reclaim.It addition, the leakage stream of the pettiness from the lateral suction side of pressure face of gap T, it is possible to the discharge side peristome 9y that the discharge side along oral area 9 expands slows down glibly, so flow losses will not increase.

It addition, extension 12 face, as it is shown in figure 5, formed by the curvature identical with the recess of the circular arc of fixing blade 7, so not confusing the air-flow of the trailing edge 7d side of fixing blade 7 as far as possible, it is possible to effectively reclaim static pressure.

As it has been described above, in the present embodiment, it is possible to reduce because supporting the loss of the air-flow caused when quiet fin 8 is supported on the housing keeping oral area 9, it is possible to suppress the efficiency that the static pressure at quiet fin 8 place reclaims to reduce as far as possible.

Additionally, the thickness of extension 12 is identical with the thickness of fixing blade 7 in extension trailing edge 12a side, more forward edge side is gone more thickening, it is possible to it is consistent with the direction of the air-flow of the extension leading edge 12b sidewind direction large variation at extension 12, the flow losses caused because of stripping are suppressed as far as possible, it can be ensured that in order to keep the intensity required for fixing blade 7 in the downstream of extension 12.

Additionally, fixing blade 7 is supported by the position of the radial direction becoming outer circumferential side compared with the discharge side peristome 9y of oral area 9, it is possible to foot 13 to be disposed along the outside of the air-flow of the discharge side peristome 9y flowing of oral area 9, it is possible to reduce the resistance of the discharge side of oral area 9.

Additionally, fixing blade 7 by the rear end of fixing blade 7 compared with supporting frame 11 to blowout side prominent in the way of be supported by, it is possible to foot 13 to be disposed along the outside of the air-flow of the discharge side peristome 9y flowing of oral area 9, it is possible to reduce the resistance of the discharge side of oral area 9.

Hereinafter, the outdoor unit being mounted with above-mentioned blower fan is illustrated.Fig. 6 is the cross-sectional view of the outdoor unit being mounted with blower fan of present embodiment.

As shown in Figure 6, outdoor unit includes compressor 22, outdoor heat converter 23 etc. at the housing 21 constituting shell.Motor 10 is fixed in housing 21 by the motor fixture 24 being fixed on the post of the bottom of housing 21, and thus, blower fan 1 is fixed in housing 21 in the way of the discharge side peristome 9y of oral area 9 is consistent with the face portion 21a of housing 21.And, supporting frame 11 is fixed on the face portion 21a of housing 21, and blower fan 1 is fixed on housing 21.

And, in the way of covering the quiet fin 8 prominent from face portion 21a forward face (discharge side), it is provided with blowout grid 25 at the face portion 21a of housing 21.Blowout grid 25 is supported by the position more becoming outer circumferential side compared with supporting frame 11.It addition, blowout grid 25 can be held in housing 21, it is also possible to be held in supporting frame 11.

Such outdoor unit is connected with the indoor unit of the air conditioner with indoor heat converter and the unit of heat pump water heater, thus constitutes kind of refrigeration cycle.And, logical the ambient air of outdoor unit is delivered to outdoor heat converter 23 by blower fan 1, make the cold-producing medium of the action by compressor 22 and the heat transfer Bottomhole pressure at outdoor heat converter 23 carry out heat exchange.

In the outdoor unit that such as above mode is constituted, the fixing blade 7 of quiet fin 8 is not directly fixed with blowout grid 25, and it is each secured to housing 21, even if so because of fall or from front artificial pressure and to blowout grid 25 apply external force, this external force is absorbed to a certain degree also by the deformation of the face portion 21a of housing 21, so not having quiet fin 8 to deform or problem that the fixing blade 7 of quiet fin 8 staggers with the position relationship of oral area 9.Therefore, there is no need to increase the intensity of blowout grid 25, it is possible to constitute outdoor unit at a low price.

It addition, fixing blade 7 and the blowout grid 25 of quiet fin 8 can be separately formed, it is possible to formed precision when improving the fixing blade 7 of molding, it is possible to manufacturing can the quiet fin 8 of efficient recovery static pressure at a low price.Such as by time integrally formed to fixing blade 7 and blowout grid 25, it is necessary to the position intersected at fixing blade 7 and blowout grid 25 arranges the fin that undercutting eliminates.

At this, undercutting refer in forming from mould take out formed products (demoulding) time only cannot the shape of the demoulding on the direction that mould is opened, it is the mould only opened in the vertical direction when being not provided with the fin for eliminating this problem cannot be carried out manufacture, need to be arranged on the slide cores (side core) that transverse direction slides, die cost becomes expensive, the shape that manufacturing cost uprises.

But, in the present embodiment, it is not necessary to arrange the fin that such undercutting eliminates, it is possible to suppress because of the performance degradation when fixing blade 7 arranges fin and causes quiet fin 8 to reclaim static pressure.

Additionally, the outdoor unit being mounted with blower fan of present embodiment, it is possible to it not the outdoor unit of front blowing-type as Fig. 6, it is possible to for the outdoor unit of blowing-type above.

Fig. 7 is the longitudinal section of the outdoor unit of the above blowout form being mounted with blower fan of present embodiment.The outdoor unit of Fig. 7 and outdoor unit illustrated in fig. 6 only difference is that, the direction of the blow out air of blower fan 1 is from the upper surface part 21b of housing 21 direction blown out, other adopts the structure identical with the situation of front illustrated in fig. 6 blowing-type, effect, so omitting the description.

It addition, in present embodiment, the fixing blade 7 of quiet fin 8 is fixed in oral area 9 or housing by supporting frame 11.Therefore, even if when blow out grid 25 and quiet fin 8 be pressed on the direction of dynamic fin 5 etc., it also is able to keep the gap of blowout grid 25, regulation between quiet fin 8 and dynamic fin 5, it is possible to prevent the fixing blade 7 of quiet fin 8 from contacting with dynamic fin 5 and dynamic fin 5 and quiet fin 8 deforms or breakage.

(the 2nd embodiment)

Fig. 8 is the meridional section figure of another blower fan of the 2nd embodiment of the present invention.Fig. 9 be another blower fan of the 2nd embodiment of the present invention from the front view in terms of discharge side.Additionally, in present embodiment, to the accompanying drawing labelling identical with the 1st embodiment identical element mark of the present invention, omit the description.

The following describes only points different in present embodiment with the 1st embodiment of the present invention.As shown in Figure 8, in the present embodiment, the extension leading edge 12b side of extension 12 and the face portion 21a shown in Fig. 6 are almost parallel, and on the other hand, extension trailing edge 12a side tilts going along with the outer circumferential side to fixing blade 17 in the way of face portion 21a side.Therefore, the meridional section height of extension 12 is formed as going to the outer circumferential side of fixing blade 17 and shortening.

The fin end eddy current produced near the outer circumference end of rotating vane 4 flows to downstream, disorder when colliding with extension 12 from the outer circumferential side of fixing blade 17, but in the present embodiment, more low by the meridional section height more outer circumferential side side that makes extension 12, can the disorder of the flowing at extension 12 place be suppressed less, it is possible to reduce flow resistance.

It addition, as it is shown in figure 9, in present embodiment, only the fixing blade of the part in multiple fixing blades 17 is provided with extension 12.Whole numbers of fixing blade 17 are 13, and on the other hand, the fixing blade 17x being provided with extension 12 is 5.And, on the top of gravity direction, it is being provided with near the fixing blade 17x of extension 12, it is configured with 2 fixing blade 17y being not provided with extension 12, in bottom, it is being provided with near the fixing blade 17x of extension 12, is being configured with a fixing blade 17y being not provided with extension 12.That is, for the number of the fixing blade 17y being not provided with extension 12 being arranged between 2 that are provided with extension 12 fixing blade 17x, the number of bottom is less compared with the top of the housing 21 shown in Fig. 6.

In the present embodiment, multiple fixing blades 17 include extension 12 at least partially and foot 13 that the outer circumference end from extension 12 extends to the direction of oral area 9, be held in oral area 9 or housing by extension 12 and foot 13.Therefore, even if being pressed on the direction of dynamic fin 5 at quiet fin 8 and when displacement, also being absorbed displacement by extension 12 and foot 13, it is possible to anti-stop tabs 5 and quiet fin 8 deform or damaged.And, extension 12 is also not arranged in all of fixing blade 17, and it is provided only on the fixing blade 17 of a part, so the loss being provided with the air-flow that extension 12 causes is not limited to a part in the entirety of fixing blade 17, so not hindering the efficiency of the quiet fin 18 with anchor hub 16 and fixing blade 17 to improve.

And, focus in the bottom of gravity direction configuring the fixing blade 17x being provided with extension 12, thereby, it is possible to guarantee the enough intensity for quiet fin 18 is held in supporting frame 11.

As it has been described above, the blower fan of present embodiment can take into account raising and the high efficiency of aerodynamic quality, and being prevented from when being pressed to dynamic fin side brute force by quiet fin, fixing blade contact with dynamic fin and makes fin and quiet fin deform or breakage.It addition, the outdoor unit being mounted with blower fan of present embodiment is capable of power saving, low noise, and be prevented from will blowout grid press to dynamic fin side brute force time etc., fixing blade contacts with dynamic fin and makes fin and quiet fin deform or breakage.

(the 3rd embodiment)

Hereinafter, with reference to accompanying drawing, the blower fan of the 3rd embodiment of the present invention is illustrated.Additionally, the present invention is not limited by these embodiments.

For description of the present embodiment, the accompanying drawing labelling that the element mark identical with the 2nd embodiment of the 1st embodiment or the present invention of the present invention is identical, omit the description.

The following describes only the difference of the 2nd embodiment of present embodiment, the 1st embodiment of the present invention and the present invention.

As shown in Figure 10, the leading edge 7c of fixing blade 7 is configured to compared with the trailing edge 7d of fixing blade 7 to become upstream side.Therefore, when blower fan 1 in terms of discharge side, in region on the right side compared with anchor hub 6, the leading edge 7c of fixing blade 7 is above compared with trailing edge 7d, in the region of the side that keeps left compared with anchor hub 6, the leading edge 7c of fixing blade 7 is positioned below compared with trailing edge 7d.That is, in region on the right side compared with anchor hub 6, fixing blade 7 is alee sloped downwardly from weather side, and in the region of the side that keeps left compared with anchor hub 6, fixing blade 7 is from weather side alee side whereabouts surface thereof.

It addition, in the region leaning on substantially downside compared with rotating shaft 2 shown in Fig. 1, the outer circumference end 7b of fixing blade 7 leading edge 7c or trailing edge 7d is positioned below compared with the anchor hub side 7a of same fixing blade 7.Additionally, as described later, the outer circumference end 7b of fixing blade 7 is arranged to be positioned at the despining direction (skew) of dynamic fin 5 compared with anchor hub side 7a.Therefore, the region that the outer circumference end 7b of the leading edge 7c or trailing edge 7d of fixing blade 7 is positioned below compared with the anchor hub side 7a of same fixing blade 7, become downside compared with adding, with the height at rotating shaft 2, the height making the outer circumference end 7b distance offset.

As shown in Figure 10,11 fixing blades 7 are made up of whole same shapes.But, the direction of rotation of driven fin 5 is for seeing clockwise, and in the region of the side that keeps left compared with anchor hub 6, fixing blade 7 is bigger than region on the right side compared with anchor hub 6 every (spacing) each other.

In more detail, with the direction of rotation of driven fin 5 for seeing clockwise, it is in the region (in Figure 10 by the region X1 of dotted line) of central authorities of above-below direction in the side that keeps left compared with anchor hub 6, fixing blade 7 is bigger every (spacing) each other, in other regions, the mode for identical interval (equidistantly) is provided with 11 fixing blades 7.

The spacing of the fixing blade 7 of access areas X1, for 3 times of spacing of the fixing blade 7 in other region.Namely, it is assumed that with the fixing blade 7 with the region being arranged on beyond the X1 of region equidistantly when the fixing blade 7 of region X1 configuration, be configured with 2 fixing blades 7 at region X1.

The edge of the suction side of fixing blade 7 and leading edge 7c, constituted from the anchor hub side 7a of the end as anchor hub 6 side to the outer circumference end 7b linearity of the end as outer circumferential side.It addition, the edge of the discharge side of fixing blade 7 and trailing edge 7d, constitute from anchor hub side 7a to as outer circumference end 7b curve-like.And, trailing edge 7d forms the curve-like of depression on the direction of leading edge 7c at central part 7m.

Have in the quiet fin 8 shown in Fig. 1 of anchor hub 6 and fixing blade 7, in multiple fixing blades 7, leading edge 7c is positioned below and the fixing blade 7 remaining at least partially within the region (the dotted line area encompassed X2 in Fig. 2) being below compared with anchor hub side 7a of outer circumference end 7b compared with trailing edge 7d, and the outer circumference end 7b of fixing blade 7 is arranged on compared with the central part 7m of same fixing blade 7 position on the lower.

Namely, in multiple fixing blades 7, leading edge 7c is positioned below and the fixing blade 7 remaining at least partially within the region (the region X2 of Fig. 2) being below compared with anchor hub side 7a of outer circumference end 7b compared with trailing edge 7d, does not have the part (horizontal part) with ground level at leading edge 7c or trailing edge 7d.

Additionally, will above in other words, quiet fin 8 is constituted as follows: assume that the fixing blade 7 to arrange with the region beyond the X1 of region is equidistantly when the fixing blade 7 of region X1 configuration, the state that the fixing blade 7 being positioned below compared with becoming the outer circumference end 7b of at least some of of the central part 7m by fixing blade 7 and same fixing blade 7 removes.

Additionally, as shown in Figure 10, the length (the radial direction length of extension 12) that fixing blade 7 and supporting frame 11 are connected by extension 12 is different according to the position of the fixing blade 7 of installation.The extension 12 of the fixing blade 7 up and down being positioned at gravity direction is shorter, and the extension of the fixing blade 7 being positioned at other positions is longer.Thereby, it is possible to it is easy to ensure that quiet fin 8 is held in the sufficient intensity of supporting frame 11.

As mentioned above, in the blower fan of present embodiment, quiet fin 8, the spacing of the fixing blade 7 at region (region of the side that keeps left compared with the anchor hub 6 in Fig. 10) place that the leading edge 7c of fixing blade 7 is positioned below compared with trailing edge 7d, more than the spacing of fixing blade 7 at region above compared with trailing edge 7d for leading edge 7c (in Fig. 10 compared with anchor hub 6 region) the on the right side place of fixing blade 7.

Therefore, it is possible to reduce the region being provided with fixing blade 7 on the direction of dynamic fin 5 in the way of water flowing, produce the situation of the part that fixing blade 7 is level.Thereby, it is possible to prevent the snow etc. being deposited on the top of blower fan 1 and circumferential component thereof from melting, it is accumulated in the situation that the water of the horizontal part of fixing blade 7 grows in dynamic fin 5 side as icicle.Therefore, it does not have icicle and dynamic fin disturb, abnormal sound or the damaged problem that dynamic fin stops are produced.

And, in multiple fixing blades 7, leading edge 7c is positioned below and at least some of fixing blade 7 being positioned below compared with anchor hub side 7a of outer circumference end 7b compared with trailing edge 7d, and the outer circumference end 7b of fixing blade 7 is arranged on compared with the central part 7m of same fixing blade 7 position on the lower.Or, the fixing blade being positioned below compared with being not provided with the outer circumference end 7b of at least some of of in such fixing blade 7, central part 7m and same fixing blade 7.

Therefore, leading edge 7c is positioned below and at least some of fixing blade 7 being positioned below compared with anchor hub side 7a of outer circumference end 7b compared with trailing edge 7d, does not have horizontal part at leading edge 7c or trailing edge 7d.Thereby, it is possible to prevent the snow etc. being deposited on the top of blower fan 1 and circumferential component thereof from melting, it is accumulated in the horizontal part of fixing blade 7, produces icicle or icicle growth.

For this point, Figure 11 is used to further describe.Figure 11 is to compare with present embodiment, also configures, at region X1, the blower fan that fixing blade 7 ground of the footpath shape identical with the fixing blade 7 being arranged in other regions is constituted.

When the direction of rotation of dynamic fin 5 is regarded as the blower fan of Figure 11 time clockwise from discharge side, in the fixing blade 7 of quiet fin, be in compared with anchor hub 6 right side part, go downward-sloping from weather side alee side, even if water droplet falls from above, do not flow on the direction of fin 5 yet.But, it is in the part in left side, is inclined upwardly with going from weather side alee side, so the water droplet fallen from above likely flows down on the direction of dynamic fin 5.

And, it is the situation etc. of snowmelt at the water droplet fallen above this, it is possible on fixing blade 7, not only flow to weather side, i.e. dynamic fin 5 direction, and grow as icicle, disturb with dynamic fin 5, generation abnormal sound or dynamic fin 5 stop and damaged.

In fig. 11, water droplet in the water droplet fallen from above, that flow down on the direction of dynamic fin 5 is the water droplet of the left and right directions (outer circumference end 7b direction or anchor hub side 7a direction) being difficult to flow to fixing blade 7.Such water droplet, the part that leading edge 7c is level (leading edge horizontal part 7e) or part (trailing edge horizontal part 7f) that trailing edge 7d is level at fixing blade 7 significantly produce.

And, such horizontal part, in the generally level of the leading edge 7c or trailing edge 7d of fixing blade 7, or easily produce curvilinear in terms of discharge side.Particularly, the leading edge 7c or trailing edge 7d of fixing blade 7 are curvilinear in terms of discharge side, easily produce when the blade angle θ of the fixing blade 7 of mode described above is differently composed according to the position of the radial direction of fixing blade 7.

But, in present embodiment, as shown in Figure 10, the spacing of the fixing blade 7 in the region that the leading edge 7c of fixing blade 7 is below compared with trailing edge 7d is bigger, so compared with the quiet fin of the structure of Figure 11, it is possible to reduce the fixing blade 7 that the runny state of the water capacity is arranged on the direction of dynamic fin 5 and there is the situation of the part becoming level.

And, the leading edge 7c or trailing edge 7d of fixing blade 7 being in left side compared with anchor hub 6 does not have horizontal part, so water droplet does not flow stagnantly in the lateral direction, so the icicle gone to dynamic fin 5 does not grow.

Particularly, in fixing blade 7, leading edge 7c is formed as curve-like and leading edge 7c and is positioned below compared with trailing edge 7d and at least some of fixing blade (being arranged in the fixing blade of the region X2 of Figure 10) being positioned below compared with anchor hub side 7a of outer circumference end 7b, the outer circumference end 7b of fixing blade is arranged below compared with central part 7m, it is possible to eliminate the horizontal part that water droplet easily stockpiles.

Additionally, remove from the quiet fin of the structure of Figure 11 be positioned at compared with anchor hub 6 left side, there is leading edge horizontal part 7e or outside 2 fixing blades 7 of trailing edge horizontal part 7f, as shown in Figure 10, it is configured in the quiet fin 8 of 11 fixing blades 7, icicle is not had to grow up in the side of dynamic fin 5, disturb with dynamic fin 5, produce abnormal sound, or dynamic fin 5 stops or the problem of breakage.And, make the fixing blade that quiet fin 8 has number be reduced to Min., it is possible to the effect reclaiming the static pressure of quiet fin 8 is maintained maximum.

It addition, be not only not provided with fixing blade 7 at region X1, being also not provided with extension 12 and foot 13, so not having water droplet to be accumulated in the part becoming level of extension 12 and foot 13, becoming the generation of ice and the problem of the starting point of growth.

Additionally, in present embodiment, removing 2 fixing blades 7 from the quiet fin of the structure of Figure 11, the spacing of the fixing blade 7 in the region of the side that makes to keep left compared with anchor hub 6 not etc., does not thus increase spacing.But it is not limited to this, as long as the spacing in the region of the side that keeps left compared with anchor hub 6 is more than the spacing in region on the right side compared with anchor hub 6, it becomes possible to the region of the side that makes to keep left compared with anchor hub 6 is equidistant.Additionally, be also in equally spaced situation in the region of the side that keeps left compared with anchor hub 6, it is preferable that be designed so that quiet fin 8 entirety somewhat rotates, become the configuration of the fixing blade not producing horizontal part.

It addition, in present embodiment, the leading edge 7c making fixing blade 7 is linearity, and making trailing edge 7d is curve-like, but from the view point of be not provided with the position that water droplet easily stockpiles, it is possible to so that leading edge 7c is curve-like, trailing edge 7d is linearity.

And, at the outdoor unit of the blower fan being mounted with present embodiment, it is possible to prevent the fixing blade 7 of such shape under the square upward water flow of dynamic fin 5 to have horizontal part.Therefore, it is possible to prevent the snow etc. being deposited on the top of outdoor unit from melting, it is accumulated in fixing blade 7, or icicle produces or growth.

And, in such outdoor unit, the fixing blade 7 of quiet fin 8 and blowout grid 25 (referring to Fig. 6) are indirectly fixing but are each secured to housing 21, even if so because of fall or from front artificial pressure blowout grid 25 be applied with external force, this external force also to a certain degree can be absorbed because of the deformation of the face portion 21a of housing 21, so not having quiet fin 8 to deform or situation that the fixing blade 7 of quiet fin 8 offsets with the position relationship of oral area 9.Therefore, there is no need to increase the intensity of blowout grid 25, it is possible to constitute outdoor unit at a low price.

(the 4th embodiment)

Blower fan hereinafter, with reference to the accompanying drawings of the 4th embodiment of the present invention.Additionally, the present invention is not limited by these embodiments.

For description of the present embodiment, to the element identical with the 3rd embodiment of the 1st embodiment of the present invention, the 2nd embodiment of the present invention or the present invention, mark same accompanying drawing labelling and omit the description.

The following describes only present embodiment and, different in the 1st embodiment of the present invention, the 2nd embodiment of the present invention or the 3rd embodiment of present invention point.

Figure 12 be the blower fan of the 4th embodiment of the present invention from the front view in terms of discharge side.Additionally, in the present embodiment, to the element identical with another embodiment, mark same accompanying drawing labelling and omit the description.

As shown in Figure 8, the discharge side (downstream) at dynamic fin 5 is provided with quiet fin 8, and this quiet fin 8 has anchor hub 6 and 12 fixing blades 7 of the surrounding being arranged on anchor hub 6.Quiet fin 8, it is that clockwise direction is seen and kept left side and be in the region of central authorities of above-below direction compared with rotating shaft 2 (referring to Fig. 1) in the direction of rotation of dynamic fin 5,2 times of the spacing of the fixing blade 7 that spacing is other regions of fixing blade 7.Namely, it is assumed that when equidistantly to configure the fixing blade 7 of same shape, the direction of rotation at driven fin 5 is that clockwise direction is seen and is configured with 1 fixing blade 7 in the region of keep left compared with rotating shaft 2 side and the central authorities that are in above-below direction.

It addition, be the shape that the fixing blade 27 that the region of the side that keeps left compared with anchor hub 6 arranges is seen in clockwise direction in the direction of rotation of driven fin 5, different with the shape of the fixing blade 7 in the region being arranged on compared with anchor hub 6 on the right side.

Variform fixing blade 27 is such as lower blade: when assuming equidistantly to configure the fixing blade 7 of same shape, is positioned below compared with the outer circumference end 7b of at least some of and fixing blade of the central part 7m of fixing blade.And, fixing blade 27 is the shape being not provided with horizontal part of the central part 27m to outer circumference end 7b from fixing blade.

In more detail, being shaped as the shape identical with other fixing blades 7 between the central part 27m and anchor hub side 27a of fixing blade 27, the shape between central part 27m and outer circumference end 27b is different.In the trailing edge 27d of fixing blade 27, between the central part 27m and anchor hub side 27a of fixing blade 27, be configured to curve-like, but between central part 27m and outer circumference end 27b in be formed as linearity.

Additionally, the meridian plane height h2 of fixing blade 27 is identical with meridian plane height h2 (referring to Fig. 1) of other 11 fixing blades 7, it is certain from anchor hub side 27a to outer circumference end 27b.Additionally, the blade angle θ (referring to Fig. 3 A, Fig. 3 B) of fixing blade 27 is identical with the blade angle θ of other 11 fixing blades 7, make compared with central part 27m the blade angle θ b of outer circumferential side end 27b side more than compared with central part 27m by the blade angle θ a of anchor hub side 27a side.

Therefore, the leading edge 27c of fixing blade 27, equally constitute as linearity between the central part 27m and anchor hub side 27a of fixing blade 27 with other 11 fixing blades 7, but between central part 27m and outer circumference end 27b in be formed as curve-like.

Or, quiet fin 18 assume with the region X1 shown in Figure 10 beyond the fixing blade 7 that arranges of region equidistantly, when region X1 configures the fixing blade 7 of same shape, as described below.Namely become following structure: formed 1 state removed of a side more in the fixing blade 7 that is positioned below compared with the outer circumference end 7b of at least some of of the central part 7m of fixing blade 7 and same fixing blade 7, leading edge 7c or position that trailing edge 7d is level, and the shape of 1 fixing blade of the less side in the position becoming level be with a portion of correction.In present embodiment, as shown in figure 12, the shape of at least 1 in the fixing blade 7 in the region that the leading edge 7c of fixing blade 7 is positioned below compared with trailing edge 7d is different, so compared with the quiet fin of the structure of Figure 11, it is possible to reduce and hold, with water, the fixing blade 7 that runny state arranges on the direction of dynamic fin 5 there is the situation of the part becoming level.

And, it is positioned at the fixing blade 7 in left side, fixing the leading edge 7c of blade 27, leading edge 27c or trailing edge 7d, trailing edge 27d compared with anchor hub 6 and not there is horizontal part, so water droplet does not flow stagnantly in the lateral direction, so the icicle gone to dynamic fin 5 does not grow.

Additionally, from the quiet fin of the structure of Figure 11 by be positioned at compared with anchor hub 6 left side, there is leading edge horizontal part 7e or 2 fixing blades 7 of trailing edge horizontal part 7f one side remove, shape is carried out part correction by the fixing blade 27 of the opposing party, the part becoming level of trailing edge 27d is changed in the part changed that tilts, is formed without the shape tilted to one side of horizontal component.Therefore, water droplet (outer circumference end 27b direction or anchor hub side 27a direction) stagnantly not in the lateral direction flows, so the icicle growth do not gone to dynamic fin 5, disturbs with dynamic fin 5, producing abnormal sound, dynamic fin 5 stops or the problem of breakage.And, it is Min. by the number of variform fixing blade, it is possible to the effect reclaiming the static pressure of quiet fin 18 is maintained maximum.

It addition, from fixing blade 7 to the shape correction of fixing blade 27, be that the curve shape formed of the trailing edge 7d to fixing blade 7 is corrected, but the blade angle θ in meridian plane height h2, Fig. 3 A～Fig. 3 C in Fig. 1 do not change.Therefore, although the shape of the leading edge 27c of fixing blade 27 is also different from fixing blade 7, but this correction essentially without causing the reduction of reclaiming the performance of static pressure.This is because the impact that the performance that quiet fin 8 reclaims static pressure is subject to meridian plane height h2 and blade angle θ is big.

Additionally, in the present embodiment, remove 17,1, fixing blade from the quiet fin of the structure of Figure 11 and carry out shape correction.This is because, the fixing blade entirety of the former fixing blade 7 is generally horizontal, and the one of removing can reach the danger avoiding icicle more reliably compared with shape correction.Therefore, the posture according to fixing blade 7, it is also possible to do not remove the former fixing blade 7, and dangerous the whole of fixing blade with icicle growth are carried out shape correction.

It addition, in present embodiment, the leading edge 7c making fixing blade 7 is linearity, and making trailing edge 7d is curve-like, but from the view point of be not provided with the position that water droplet easily stockpiles, it is possible to so that leading edge 7c is curve-like, trailing edge 7d is linearity.In this case, the fixing blade 27 changing shape is linearity between the central part 27m and anchor hub side 27a of leading edge 27c, it it is curve-like between central part 27m and outer circumference end 27b, and, it is curve-like between the central part 27m and anchor hub side 27a of trailing edge 27d, for linearity between central part 27m and outer circumference end 27b.

As it has been described above, the fixing blade 7 that the blower fan of present embodiment configures with being prevented under the square upward water flow of dynamic fin 5 such shape has horizontal part.Therefore, it is possible to prevent the snow etc. being deposited on the top of blower fan 1 and circumferential component thereof from melting, it is accumulated in fixing blade 7, fixing blade 27, or icicle produces or growth.Thus, it does not have icicle and dynamic fin disturb, produce abnormal sound or dynamic fin stops and the problem of breakage.

It addition, the fixing blade 7 that the outdoor unit being mounted with blower fan of present embodiment configures with being prevented under the square upward water flow of dynamic fin 5 such shape has horizontal part.Therefore, it is possible to prevent the snow etc. being deposited on the top of outdoor unit from melting, it is accumulated in fixing blade 7, or icicle produces or growth.

As described above, the present invention includes: dynamic fin, comprising: have rotating hub and being arranged on multiple rotating vanes of the surrounding rotating hub of rotating shaft；It is arranged on the oral area of the outer circumferential side of dynamic fin；With quiet fin, it is arranged on the discharge side of dynamic fin, including multiple fixing blades of anchor hub He the surrounding being arranged on anchor hub.It addition, fixing blade, than the radial direction of fixing blade central part outer circumferential side side, relative to the blade angle with the face of the central axis of quiet fin, more than the central part of the radial direction than fixing blade by the blade angle of anchor hub side.

According to this structure, it is possible to the main flow of the air stream discharged by driven fin is concentrated, convolution direction composition become big, compared with the central part of the fixing blade of quiet fin the collision loss of the porch of the fixing blade of outer circumferential side side place, quiet fin suppress less.Therefore, it is possible to efficiently convolution direction composition is recovered as static pressure.

It addition, in the present invention, the blade angle of fixing blade, maximum between central part and the outer circumference end of the radial direction of fixing blade.

According to this structure, the blade angle of the outer circumference end of fixing blade is somewhat less than the blade angle from central part to outer circumferential side, so in the outer circumference end of fixing blade, it is possible to the collision loss of the entrance of fixing blade is suppressed less.Therefore, efficiently convolution direction composition can be recovered as static pressure from the central part of fixing blade to outer circumferential side and then in outer circumference end.

It addition, in the present invention, the blade angle of the outer circumference end of fixing blade, less than the blade angle of central part of the radial direction of fixing blade.

According to this structure, in the outer circumference end of fixing blade, it is possible to the collision loss of the entrance of fixing blade is suppressed less.Therefore, from the central part of fixing blade to outer circumferential side, efficiently convolution direction composition can be recovered as static pressure, even and if be subject to moving the outer circumference end of the impact of the leakage stream of the rotating vane of fin, fin end eddy current, it is also possible to efficiently convolution direction composition is recovered as static pressure.

It addition, in the present invention, fixing blade, meridian plane height from anchor hub side to outer circumference end, as the height rotating the plane projecting to the central shaft comprising quiet fin is fixed.

According to this structure, from the anchor hub side of fixing blade to outer circumferential side, chord-length is suppressed and does not extend, it is possible to suppress the loss that the increase of the skin-friction loss of fixing blade and the tail width of wake flow causes to increase.Additionally, near the outer circumference end of fixing blade, also suppress not extend by chord-length, it is possible to do one's utmost the impact of fin end eddy current that be easily subject to impact in the situation (situation that meridian plane height is high) suppressing the chord-length at outer circumference end place longer, that the dynamic fin end leaking stream and dynamic fin between fin and oral area produces.Therefore, it is possible to suppress the loss caused because of disorder to increase, the convolution direction composition of the air stream at the outer circumference end place of fixing blade is recovered as static pressure simultaneously.

It addition, in the present invention, fixing blade is in the plane vertical with rotating shaft, and outer circumferential side tilts relative to the despining direction of anchor hub laterally dynamic fin.

According to this structure, when the air stream that driven fin is discharged passes through the fixing blade of quiet fin, pass through at different times by the position of radial direction, it is possible to the size of the noise produced when reducing by quiet fin.

It addition, the present invention includes: dynamic fin, comprising: have rotating hub and being arranged on multiple rotating vanes of the surrounding rotating hub of rotating shaft；It is arranged on the oral area of the outer circumferential side of dynamic fin；With quiet fin, it is arranged on the discharge side of dynamic fin, including multiple fixing blades of anchor hub He the surrounding being arranged on anchor hub.It addition, oral area includes: the gap of the outer circumference end of oral area and rotating vane is minimum most minor diameter part；Be arranged on most minor diameter part discharge side, discharge side peristome that diameter is bigger than the diameter of most minor diameter part.And, fixing blade is arranged to, and the direction of principal axis position of the edge of the suction side of fixing blade and the outer circumference end of leading edge is most between minor diameter part and discharge side peristome.

According to this structure, the outer circumferential side of driven fin is to the discharge air-flow in the region of outer circumference end, along with going to the discharge side peristome of oral area, before shifting the flowing for having radial direction composition, is flowed between the fin of fixing blade of quiet fin.Therefore, it is possible to forcibly air-flow is transformed into direction of principal axis, it is possible to be efficiently recovered as static pressure.

It addition, the present invention has the gap of regulation between the outer circumference end and oral area of leading edge.

By adopting this structure, leakage stream is somewhat produced wittingly from the pressure face side of the leading edge of quiet fin to suction surface side, thereby, it is possible to suppress the edge blowing out side near the outer circumference end of quiet fin and trailing edge side to produce to be not converted the air-flow into static pressure, it is possible to effectively reclaim static pressure.

It addition, at least some of in the multiple fixing blade being arranged on quiet fin of the present invention, being provided with the extension only extended in the radial direction the trailing edge side of outer circumference end, quiet fin is held in the housing keeping oral area by extension.

According to this structure, even if arranging the extension flowing without the air upsetting the front edge side being flowed into fixing blade, it is possible to do one's utmost to reduce the loss of air-flow.Therefore, it is possible to do not hinder the static pressure of quiet fin to reclaim the efficiency caused quiet fin is held in the housing keeping oral area with improving.It addition, by not arranging extension the whole of multiple fixing blades in a part, it is possible to reduce the loss of the air-flow of extension further.

It addition, the present invention includes: dynamic fin, comprising: have rotating hub and being arranged on multiple rotating vanes of the surrounding rotating hub of rotating shaft；With quiet fin, it is arranged on the discharge side of dynamic fin, including multiple fixing blades of anchor hub He the surrounding being arranged on anchor hub.Additionally, in quiet fin, leading edge at fixing blade is arranged in the fixing blade that arranges than the region of trailing edge position on the lower interval each other, is arranged in the fixing blade that arranges than the edge of blowout side and the region of trailing edge position by the top interval each other more than the edge of suction side of fixing blade and leading edge.

According to this structure, it is possible to reduce, from the fixing blade in the region that the square upward water flow at dynamic fin moves, the position that water droplet easily stockpiles.Thus, being deposited on the snow on top of blower fan and circumferential component thereof, frost melt because of sunshine etc. and be transferred to fixing blade, this snowmelt is when freezing and be grown to icicle, it is possible to prevent icicle from growing from the water droplet being accumulated in fixing blade to the weather side of fixing blade.Therefore, it is possible to prevent icicle and dynamic fin from disturbing, produce abnormal sound, or dynamic fin stops.

It addition, the present invention includes: dynamic fin, comprising: have rotating hub and being arranged on multiple rotating vanes of the surrounding rotating hub of rotating shaft；With quiet fin, it is arranged on the discharge side of dynamic fin, including multiple fixing blades of anchor hub He the surrounding being arranged on anchor hub.And, the leading edge at fixing blade is arranged in the shape of at least 1 the fixing blade arranged than the region of trailing edge position on the lower, and the shape being arranged in the fixing blade arranged than the region of trailing edge position by the top from the leading edge at fixing blade is different.Further, it is not provided with horizontal part from the central part of this fixing blade to outer circumference end.

According to this structure, it is possible to reduce, from the fixing blade in the region that the square upward water flow at dynamic fin moves, the horizontal part that water droplet easily stockpiles.Thus, being deposited on the snow on top of blower fan and circumferential component thereof, frost melt because of sunshine etc. and be transferred to fixing blade, this snowmelt is when freezing and be grown to icicle, it is possible to prevent icicle from growing from the water droplet being accumulated in fixing blade to the weather side of fixing blade.Therefore, it is possible to prevent icicle and dynamic fin from disturbing, produce abnormal sound, or dynamic fin stops or damaged.

Additionally, in the present invention, multiple leading edges of fixing blade or at least one of trailing edge are formed as curve-like, and in multiple fixing blade, leading edge be positioned at than trailing edge position on the lower and outer circumference end remain at least partially within the fixing blade than position on the lower, one end, anchor hub side, outer circumference end be arranged on the central part of blade more fixing than this position on the lower.

According to this structure, it is possible to eliminate the horizontal part that water droplet easily stockpiles on fixing blade.

Additionally, in the present invention, in multiple fixing blades, leading edge is positioned at and is constituted to be positioned at the shape more identical than the fixing blade of trailing edge position by the top with leading edge than the fixing blade of trailing edge position on the lower, and does not have the fixing blade of the outer circumference end remaining at least partially within blade more fixing than this position on the lower of the central part of fixing blade.

According to this structure, it is possible to make the number of quiet fin be reduced to Min., it is possible to the effect of quiet fin is maintained maximum, prevent water droplet to be accumulated in fixing blade simultaneously.

Additionally, in the present invention, it is not provided with the fixing blade of horizontal part, it is following fixing blade: in multiple fixing blades, leading edge is positioned at and is constituted to be positioned at the shape more identical than the fixing blade of trailing edge position by the top with leading edge than the fixing blade of trailing edge position on the lower, and the position that the outer circumference end remaining at least partially within blade more fixing than this of the central part of fixing blade is on the lower.

According to this structure, it is possible to make the number of variform fixing blade be reduced to Min., it is possible to the effect of quiet fin is maintained maximum, prevent water droplet to be accumulated in fixing blade simultaneously.

It addition, in the present invention, the established angle of the fixing blade being not provided with horizontal part is identical with the established angle of other fixing blade.

According to this structure, it is possible to the performance changed with the shape of fixing blade is reduced and is limited to irreducible minimum, be prevented from water droplet and be accumulated in fixing blade simultaneously.

It addition, the present invention includes dynamic fin, comprising: have rotating hub and being arranged on multiple rotating vanes of the surrounding rotating hub of rotating shaft；It is arranged on the oral area of the outer circumferential side of dynamic fin；With quiet fin, it is arranged on the discharge side of dynamic fin, including multiple fixing blades of anchor hub He the surrounding being arranged on anchor hub.It addition, quiet fin is provided with the circular supporting frame centered by rotating shaft in its periphery, supporting frame and oral area are fixed.

According to this structure, it is possible to prevent by quiet fin to dynamic fin side brute force press time etc., fixing blade contacts with dynamic fin and makes fin or quiet fin deform or breakage.

It addition, the present invention, the extension that the trailing edge side being provided with only outer circumference end at least partially in the multiple fixing blade being arranged at quiet fin extends in the radial direction；With the foot that the outer circumference end from extension extends to the direction of oral area, quiet fin is held in oral area by extension and foot.

According to this structure, it is possible to suppress input increase and noise rising that near the periphery of fixing blade, the resistance increase of air-flow causes, prevent fixing blade from contacting with dynamic fin and making fin or quiet fin deform or damaged simultaneously.

It addition, in the present invention, make fixing blade and supporting frame form as one.

According to this structure, it is possible to increase the intensity of fixing blade and supporting frame, it is prevented that fixing blade contacts with dynamic fin and makes fin or quiet fin deform or damaged.

It addition, the present invention is the outdoor unit being mounted with blower fan of the present invention hereto enumerated.According to this structure, outdoor unit is prevented from fixing blade, blowout grid contacts with dynamic fin and makes fin or quiet fin deform or damaged.

Industry utilizes probability

As mentioned above, the blower fan of the described structure of the present invention can take into account raising and the high efficiency of aerodynamic quality, so can be applied not only to the heat-pump apparatus such as refrigerating equipment, water heater such as the apparatus of air conditioning of air conditioner, home-use freezing freezer and automatic vending machine such as home-use, industrial and there is the electronic equipment of thermoelectron parts, it is also possible to suitable in purposes such as AV equipment, exhaust heat recovery apparatus.

Description of reference numerals

1 blower fan

2 rotating shafts

3 rotate hub

4 rotating vanes

4a rotating vane trailing edge

5 dynamic fins

6,16 anchor hub

7,17,17x, 17y, 27 fixing blades

7a, 17a, 27a anchor hub side

7b, 17b, 27b outer circumference end

7c, 17c, 27c leading edge

7d, 17d, 27d trailing edge

7e leading edge horizontal part

7f trailing edge horizontal part

7m, 17m, 27m central part

8,18 quiet fin

9 oral areas

The most minor diameter part of 9x

9y discharge side peristome

9z suction side peristome

10 motor

11 supporting frames

12 extensions

12a extension trailing edge

12b extension leading edge

13 foots

21 housings

21a face portion

22 compressors

23 outdoor heat converters

24 motor fixtures

25 blowout grids.

Claims

1. a blower fan, it is characterised in that including:

Dynamic fin, comprising: have the rotation hub of rotating shaft and multiple rotating vanes of the surrounding being arranged on described rotation hub；

It is arranged on the oral area of the outer circumferential side of described dynamic fin；With

Quiet fin, it is arranged on the discharge side of described dynamic fin, including multiple fixing blades of anchor hub He the surrounding being arranged on described anchor hub,

Described fixing blade, than the radial direction of described fixing blade central part outer circumferential side side, relative to the blade angle with the face of the central axis of described quiet fin, more than than the central part of the radial direction of the described fixing blade blade angle by described anchor hub side.

2. blower fan as claimed in claim 1, it is characterised in that:

The blade angle of described fixing blade, maximum between central part and the outer circumference end of the radial direction of described fixing blade.

3. blower fan as claimed in claim 1, it is characterised in that:

The blade angle of the outer circumference end of described fixing blade, less than the blade angle of central part of the radial direction of described fixing blade.

4. blower fan as claimed in claim 1, it is characterised in that:

Described fixing blade, meridian plane height from described anchor hub side to outer circumference end, as the height rotating the plane projecting to the central shaft comprising described quiet fin is fixed.

5. a blower fan, it is characterised in that including:

Described oral area includes: the gap of the outer circumference end of described oral area and described rotating vane is minimum most minor diameter part；Be arranged on described in most minor diameter part discharge side, discharge side peristome that diameter is bigger than the diameter of described most minor diameter part,

Described fixing blade is arranged to, as the direction of principal axis position of outer circumference end of leading edge of edge of suction side of described fixing blade described most between minor diameter part and described discharge side peristome.

6. blower fan as claimed in claim 5, it is characterised in that:

Described fixing blade is arranged to, and has the gap of regulation between outer circumference end and the described oral area of the leading edge of described fixing blade.

7. blower fan as claimed in claim 5, it is characterised in that:

At least some of in the multiple described fixing blade being arranged at described quiet fin, being provided with the extension that the trailing edge side of the edge of the blowout side being only used as outer circumference end extends in the radial direction, described quiet fin is held in the housing keeping described oral area by described extension.

8. a blower fan, it is characterised in that including:

Dynamic fin, comprising: have the rotation hub of rotating shaft and multiple rotating vanes of the surrounding being arranged on described rotation hub；With

In described quiet fin, leading edge at described fixing blade is arranged in the described fixing blade that arranges than the region of trailing edge position on the lower interval each other, the described fixing blade that arranges than the region of trailing edge position by the top interval each other it is arranged in more than the leading edge at described fixing blade, the leading edge of wherein said fixing blade is the edge of the suction side of described fixing blade, and the trailing edge of described fixing blade is the edge of the blowout side of described fixing blade.

9. a blower fan, it is characterised in that including:

Leading edge at described fixing blade is arranged in the shape of at least 1 the described fixing blade arranged than the region of trailing edge position on the lower, the shape being arranged in the described fixing blade arranged than the region of trailing edge position by the top from the leading edge at described fixing blade is different, and is not provided with horizontal part from central part to outer circumference end.

10. blower fan as claimed in claim 8 or 9, it is characterised in that:

In the plurality of fixing blade, the at least one of leading edge or trailing edge is formed as curve-like, and in the plurality of fixing blade, leading edge is positioned at and remains at least partially within the fixing blade than position on the lower, one end, anchor hub side than trailing edge position on the lower and outer circumference end, the outer circumference end of this fixing blade is arranged on the central part of blade more fixing than this position on the lower.

11. blower fan as claimed in claim 8 or 9, it is characterised in that:

In the plurality of fixing blade, leading edge is positioned at and is constituted to be positioned at the shape more identical than the fixing blade of trailing edge position by the top with leading edge than the fixing blade of trailing edge position on the lower, and does not have the fixing blade of the outer circumference end remaining at least partially within blade more fixing than this position on the lower of the central part of described fixing blade.

12. blower fan as claimed in claim 9, it is characterised in that:

The described fixing blade being not provided with horizontal part, the fixing blade being discussed further below: in the plurality of fixing blade, leading edge is positioned at and is constituted to be positioned at the shape more identical than the fixing blade of trailing edge position by the top with leading edge than the fixing blade of trailing edge position on the lower, and the position that the outer circumference end remaining at least partially within blade more fixing than this of the central part of described fixing blade is on the lower.

13. a blower fan, it is characterised in that including:

Dynamic fin, comprising: have the rotation hub of rotating shaft and multiple rotating vanes of the surrounding being arranged on described rotation hub；It is arranged on the oral area of the outer circumferential side of described dynamic fin；With

Described quiet fin is provided with the circular supporting frame centered by rotating shaft in its periphery, and described supporting frame and described oral area are fixed.

14. blower fan as claimed in claim 13, it is characterised in that:

The extension that the trailing edge side being provided with only outer circumference end at least partially in the multiple fixing blade being arranged at described quiet fin extends in the radial direction；The foot extended to the direction of described oral area with the outer circumference end from described extension,

Described quiet fin is held in described oral area by described extension and described foot.

15. an outdoor unit, it is characterised in that:

It is mounted with the blower fan according to any one of claim 1,5,8,9 and 13.