CN102812253A

CN102812253A - Cross-flow Fan And Air Conditioner

Info

Publication number: CN102812253A
Application number: CN2010800655323A
Authority: CN
Inventors: 池田尚史; 田所敬英; 山下哲央; 平川诚司; 代田光宏
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2010-03-18
Filing date: 2010-03-18
Publication date: 2012-12-05
Anticipated expiration: 2030-03-18
Also published as: ES2690196T3; AU2010348684B2; CN102812253B; AU2010348684A1; EP2549114A4; EP2549114A1; EP2549114B1; WO2011114375A1

Abstract

A cross-flow fan comprises: blade wheel units (8d) provided with circular plate-like support plates (8b) having a rotation center located at the center section thereof, and also with blades (8c) which are arranged along the outer peripheries of the support plates (8b), extend in the direction of the rotation axis, and each have both ends supported by the support plates (8b); a blade wheel (8a) comprising the blade wheel units (8d) secured in the direction of the rotation axis; and grooves (14) which are provided in negative pressure surfaces (13a) of the blades (8c), the negative pressure surfaces (13a) being the rear surfaces of the blades (8c) relative to the rotational direction, and which extend in the direction of the rotation axis. The grooves (14) are separated from each other with predetermined intervals therebetween so that a flat section (M) is provided between adjacent grooves (14).

Description

Cross flow fan and air regulator

Technical field

The present invention relates to cross flow fan and the air regulator that is equiped with this cross flow fan as the air-supply parts.

Background technique

As an example of the cross flow fan in the air regulator that is installed in the past, the cross flow fan (for example with reference to patent documentation 1) that is provided with groove, dolly dimple or kick along sense of rotation at the impeller periphery side periphery of the suction surface side of each fin is arranged.

The existing technology document

Patent documentation

Patent documentation 1: No. 210093 communiques of japanese kokai publication hei 3 –

Summary of the invention

The problem that invention will solve

As an example of in the past cross flow fan, patent documentation 1 described cross flow fan has groove, dolly dimple, kick along sense of rotation at the impeller periphery side periphery of the suction surface side of each fin.Cross flow fan is arranged in the wind path that is formed by suction port and blow-off outlet; Be positioned under the situation that blows out side in the fin rotation that forms cross flow fan; Air-flow through fin is peeled off along with producing near hinder marginal part, peels off the pressure oscillation of the reason that causes becoming noise by this.For this reason, in patent documentation 1, utilize groove, dolly dimple, kick on the suction surface that is located at fin, absorb the pressure oscillation of the reason that becomes noise, suppress large-scale noise, thereby seek low noiseization.But, be positioned under the situation of suction side in the fin rotation, be positioned at the situation that blows out side with respect to fin, the direction of passage upset of the air-flow on the fin.Therefore; Above-mentioned groove, dolly dimple and kick become front edge with respect to air-flow; Air-flow causes producing bigger current difference along the fin length direction to little slot part concentrated, is perhaps caused producing the air-flow along the fin length direction by the peeling off of the air-flow of dolly dimple side, kick, makes air-flow become unstable; On the contrary pressure oscillation possibly take place, aggravate large-scale noise.

In addition; After being attached to cross flow fan in the air regulator; Because of dust to flowing resistance is increased, change and peel off easily with respect to the angle of attack of the air-flow of fin, have the air-flow problem such as instability more that blows out that makes.When the cooling operation of air regulator, if it is unstable and produce from indoor adverse current to fan to blow out air-flow, then cold wind flows into impeller and dewfall is dispersed to the outside dew, thereby possibly get ground wet.

In addition, usually, when making fin, make thermoplastic resin such as AS flow into the forming die of fin, the cooling back is carried out the demoulding and is formed the part of fin along the impeller rotating shaft direction.But; In order to make the fin that as the structure of patent documentation 1, on the suction surface of fin, is provided with the groove that extends along fin sense of rotation (with the direction of rotating shaft direct cross), dolly dimple, kick; Can not carry out the demoulding along the running shaft direction; Need the edge and the direction of rotating shaft direct cross to carry out the demoulding, exist production method complicated, the problem that productivity reduces.

The present invention makes for the problem that solves above-mentioned that kind, and purpose is to obtain to realize the cross flow fan of low noiseization and high efficiency.

In addition, the present invention also aims to obtain can quiet and energy-conservation air regulator.

The scheme that is used to deal with problems

Cross flow fan of the present invention is characterised in that; Comprise: the impeller monomer; It possesses discoideus support plate and a plurality of fin, and the rotating center of above-mentioned discoideus support plate is positioned at central part, and above-mentioned a plurality of fins are along the periphery configuration of above-mentioned support plate; Extend along the running shaft direction, and two ends are supported by above-mentioned support plate; Impeller fixedly mounts a plurality of above-mentioned impeller monomers and constitutes this impeller along above-mentioned running shaft direction; The groove of many concavities, the sense of rotation that they are located at respect to above-mentioned fin becomes on the fin suction surface on surface, back, extends along above-mentioned running shaft direction, separately above-mentioned groove is set predetermined distance, and makes between the adjacent groove and have the par.

In addition; Cross flow fan of the present invention is characterised in that, comprising: the impeller monomer, and it possesses discoideus support plate and a plurality of fin; The rotating center of above-mentioned discoideus support plate is positioned at central part; Above-mentioned a plurality of fin extend along the running shaft direction, and two ends is supported by above-mentioned support plate along the periphery configuration of above-mentioned support plate; Impeller fixedly mounts a plurality of above-mentioned impeller monomers and constitutes this impeller along above-mentioned running shaft direction; Motor, the motor reel of this motor are fixed on the above-mentioned support plate of the end that is positioned at above-mentioned impeller, drive above-mentioned impeller rotation; Be fixed in the fixing part of above-mentioned motor reel, it is positioned at the inboard of above-mentioned impeller monomer; Opening portion inserts said fixing portion in order to make fixed block, and the part, interval of the above-mentioned fin of above-mentioned impeller monomer is widened and formed this opening portion; The groove of many concavities that will extend along above-mentioned running shaft direction, be located at least the sense of rotation side of the above-mentioned impeller fin adjacent with above-mentioned opening portion, become on the surperficial fin suction surface in back with respect to above-mentioned sense of rotation.

In addition; Cross flow fan of the present invention is characterised in that, comprising: the impeller monomer, and it possesses discoideus support plate and a plurality of fin; The rotating center of above-mentioned discoideus support plate is positioned at central part; Above-mentioned a plurality of fin extend along the running shaft direction, and two ends is supported by above-mentioned support plate along the periphery configuration of above-mentioned support plate; Impeller fixedly mounts a plurality of above-mentioned impeller monomers and constitutes this impeller along above-mentioned running shaft direction; Make the sectional shape vertical of a joint end, that be connected with above-mentioned support plate of above-mentioned fin with running shaft; The sectional shape vertical with above-mentioned running shaft than joint the other end, that be connected with above-mentioned support plate of above-mentioned fin is big; And become in sense of rotation on the fin suction surface on surface, back, be provided with along the groove of many concavities of above-mentioned running shaft direction extension with respect to above-mentioned fin.

In addition, air regulator of the present invention is equiped with above-mentioned cross flow fan.

The invention effect

Adopt the present invention, have and to obtain and to peel off in the suction surface lateral inhibition of fin, make steady air currentization and realize the effect of the cross flow fan of low noiseization and high efficiency.

In addition, through this cross flow fan is installed in the air regulator, can obtain can quiet and energy-conservation air regulator.

Description of drawings

Fig. 1 is the stereoscopic figure of air regulator that expression is equiped with the cross flow fan of mode of execution 1 of the present invention.

Fig. 2 relates to mode of execution 1 of the present invention, is the Q – Q longitudinal section of Fig. 1.

Fig. 3 is the profile diagram of impeller of the cross flow fan of expression mode of execution 1 of the present invention.

Fig. 4 relates to mode of execution 1 of the present invention, is for example to be illustrated in the stereogram that is fixed with the state of 1 fin on 1 ring portion.

Fig. 5 relates to mode of execution 1 of the present invention, and Fig. 5 is the explanatory drawing that amplifies the P – P cross section of presentation graphs 4.

Fig. 6 relates to mode of execution 1 of the present invention, is the explanatory drawing of shape of representing to be located at the groove of fin suction surface with the cross section vertical with impeller rotating shaft.

Fig. 7 relates to mode of execution 1 of the present invention, is the explanatory drawing of shape of representing to be located at the groove of fin suction surface with the cross section vertical with impeller rotating shaft.

Fig. 8 relates to mode of execution 1 of the present invention, and Fig. 8 is the explanatory drawing that flows of the air when being illustrated in fin 8c and sucking regional E1 through impeller.

Fig. 9 relates to mode of execution 1 of the present invention, is the explanatory drawing that flows of the air when being illustrated in fin and blowing out area E 2 through impeller.

Figure 10 is the stereogram of impeller of the cross flow fan of expression mode of execution 2 of the present invention.

Figure 11 relates to mode of execution 2 of the present invention, and (a) of Figure 11 is the stereogram of a part of the impeller of expression motor side, and (b) of Figure 11 is the explanatory drawing of the side-looking of this impeller.

Figure 12 is the profile diagram of impeller of the cross flow fan of expression mode of execution 3 of the present invention, the side view of (a) expression cross flow fan of Figure 12, the S – S sectional view of (b) expression Figure 12 of Figure 12 (a).

Figure 13 relates to mode of execution 3 of the present invention, is the sectional view of expression mould 17,18.

Figure 14 relates to mode of execution 3 of the present invention, is 1 A – A sectional view in the fin of Figure 12.

Figure 15 relates to mode of execution 3 of the present invention, is 1 B – B sectional view in the fin of Figure 12.

Figure 16 relates to mode of execution 3 of the present invention, is the stereogram of expression according to 1 fin of another structure example of cross flow fan.

Figure 17 relates to mode of execution 3 of the present invention, is the sectional view of a part in the cross section vertical with running shaft that amplifies the fin length direction front end of expression fin.

Figure 18 representes the another structure example of the cross flow fan of mode of execution 3 of the present invention, is the plan view of 1 fin of expression.

Figure 19 representes the another structure example of the cross flow fan of mode of execution 3 of the present invention, is the plan view of 1 fin of expression.

Figure 20 representes the another structure example of the cross flow fan of mode of execution 3 of the present invention, is the plan view of 1 fin of expression.

Figure 21 representes the another structure example of the cross flow fan of mode of execution 3 of the present invention, is the plan view of 1 fin of expression.

Figure 22 representes the another structure example of the cross flow fan of mode of execution 3 of the present invention, is the plan view of 1 fin of expression.

Embodiment

Mode of execution 1.

Below, according to description of drawings mode of execution 1 of the present invention.Fig. 1 is the stereoscopic figure of air regulator that expression is equiped with the cross flow fan of this mode of execution, and Fig. 2 is the Q – Q longitudinal section of Fig. 1.In Fig. 1, represent flowing of air with hollow arrow, the with dashed lines arrow is represented flowing of air in Fig. 2.

As depicted in figs. 1 and 2, air conditioner main body 1 is arranged on the wall 11a in the room 11 that is carried out air conditioning.On air conditioner main body top 1a be equipped with the suction port that becomes indoor air suction grid 2, make the dust static electrification and collected electric dust collector 6 and remove the cancellous filter 5 of dust.In addition, face side and the upper side at impeller 8a disposes the heat exchanger 7 that pipe arrangement 7b is applied in the structure among a plurality of aluminium radiator fin 7a with the mode of surrounding impeller 8a.In addition, air conditioner main body front surface 1b is covered by the front surface panel, and air conditioner main body front surface 1b offers blow-off outlet 3 at downside.As the cross flow fan 8 of gas fan will with respect to the suction side stream E1 for the impeller 8a with blow out effluent road E2 and divide and open; And cross flow fan 8 has the temporary transient stabilizer (stabilizer) 9 of getting up of storing of the water droplet that drips from heat exchanger 7, and the side that blows out in order to constitute the back side that blows out the effluent road at impeller 8a has gyrate guiding wall 10.In addition, rotation freely is equipped with wind direction blade 4a and left and right sides wind direction blade 4b up and down at blow-off outlet 3 places, changes to indoor air supply direction.Among the figure, reference character O representes the rotating center of impeller 8a, and E1 is the suction zone of impeller 8a, and E2 is the zone that blows out of impeller 8a.In addition, RO representes the sense of rotation of impeller 8a.

In the air conditioner main body 1 that constitutes in the above described manner, when utilizing power supply board that the motor of drives impeller 8a rotation is switched on, the impeller 8a of cross flow fan 8 rotates along the RO direction.So; Air from the suction port suction rooms 11 2 of being located at air conditioner main body top 1a; After utilizing electric dust collector 6 and filter 5 to remove dust; Utilize heat exchanger 7 heated air and heat, perhaps utilize heat exchanger 7 cooling airs and in freezing, dehumidifying any, suck air to the impeller 8a of cross flow fan 8.Subsequently, the air-flow that blows out from impeller 8a is directed wall 10 guiding and blows out to room 11 towards blow-off outlet 3, thereby carries out air conditioning.At this moment, wind direction blade 4a and left and right sides wind direction blade 4b control the wind direction of blow out air to reaching left and right directions up and down about utilizing, thereby wind is circulated in whole room 11, seek to suppress the temperature inequality.

Fig. 3 is the profile diagram of impeller 8a of the cross flow fan 8 of this mode of execution of expression; The side view of (a) expression cross flow fan 8 of Fig. 3; The N – N sectional view of (b) presentation graphs 3 (a) of Fig. 3; The lower half portion of Fig. 3 (b) is represented the state of the multi-disc fin of visible opposite side, and upper half part is represented 1 fin 8c.As shown in Figure 3, the impeller 8a of cross flow fan 8 has a plurality of impeller monomer 8d along running shaft direction AX.Impeller monomer 8d is positioned at the discoideus support plate of central part, for example is ring portion 8b and constitutes along the configuration of the periphery of ring portion 8b and a plurality of fin 8c of extending along running shaft direction AX here by rotating center.The two ends of a plurality of fin 8c are supported in ring portion 8b.Have a plurality ofly along running shaft direction AX, for example utilize ultrasonic welding etc. that the ring portion 8b of impeller monomer 8d of front end and the disposed adjacent of fin 8c is connected for example by thermoplastic resin formed impeller monomer 8d that forms such as AS resin, ABS resins.Center at the ring portion 8b of an end that is positioned at running shaft direction AX is provided with fan shaft 8f, is provided with fan axle sleeve 8e at the center of the ring portion 8b that is positioned at the other end.And the motor reel 12a of fan axle sleeve 8e and motor 12 utilizes screw etc. fixing.Ring portion 8b is that profile is circular tabular support plate; The middle body of ring portion 8b at the running shaft place that is positioned at the axial two ends of rotation of impeller 8a forms fan shaft 8f and fan axle sleeve 8e, and the ring portion 8b except that two ends is that the middle body at running shaft place is the ring-type in space.In (b) of Fig. 3, dot and dash line is to link motor reel 12a representes rotating center O with fan shaft 8f imaginary spin axis, representes the running shaft direction.

In this mode of execution, as shown in Figure 3, in the fin suction surface 13a of fin 8c and fin outer circumferential side end 15a and fin, between all side end 15b, be formed with many grooves 14.Here, specify the shape of fin.The face of the sense of rotation side of fin 8c and the face that is under pressure when rotated are called fin pressure side 13b, with the face of the opposition side of fin pressure side 13b and be called fin suction surface 13a for the face of negative pressure when rotated.Fig. 4 for example is illustrated in the stereogram that is fixed with the state of 1 fin 8c on 1 ring portion 8b, and Fig. 5 is the explanatory drawing that amplifies the P – P cross section of presentation graphs 4.As shown in Figure 4, the fin outer circumferential side end 15a of fin 8c is positioned at the outer circumferential side of ring portion 8b, and all side end 15b are positioned at all sides of ring portion 8b in the fin of fin 8c, in fin outer circumferential side end 15a and fin, forms roughly circular shape between all side end 15b.On the cross section vertical of fin 8c with running shaft; Camber line U is the wall thickness center line of the fin 8c when groove 14 is not set; Regard the straight line of all side end 15b in the fin outer circumferential side end 15a that links fin 8c, the fin as fin string of a musical instrument L, the length of fin string of a musical instrument L is made as L1.

In addition; As shown in Figure 5; With fin circular-arc 15a place, fin outer circumferential side end thickness t e1 and the thickness t e2 (not shown) at fin all side end 15b place in fin compare, the thickness t e3 of the middle body of fin on the fin string of a musical instrument L of fin 8c direction constitutes thicker than the thickness t e2 of the thickness t e1 of fin and fin.Promptly; The fin thickness maximum 15c of portion that becomes maximum thickness t max is following structure: along the fin string of a musical instrument L direction of fin 8c in fin outer circumferential side end 15a and fin between all side end 15b; From fin outer circumferential side end 15a to the fin thickness maximum 15c of portion; Fin thickness is thickening smoothly, from the fin thickness maximum 15c of portion to fin in all side end 15b, the attenuation smoothly of fin thickness.

In addition, on fin suction surface 13a, be formed with many along running shaft direction AX, be the groove 14 that the fin length direction extends.The groove 14 of concavity is made up of the groove sidepiece 14a that groove bottom 14b is connected with two ends with groove bottom 14b.Fig. 6 and Fig. 7 are to amplify the explanatory drawing of the shape of the groove 14 that expression is located at fin suction surface 13a with the cross section of impeller rotating shaft AX quadrature.Groove sidepiece 14a tilts with the mode of widening groove width gradually towards fin suction surface 13a from groove bottom 14b.In addition, groove sidepiece 14a has implemented fillet processing with near the part that fin suction surface 13a is connected, and for example forms roughly circular shape.In addition, near the part that groove sidepiece 14a is connected with groove bottom 14b has been implemented fillet processing, forms roughly circular-arc.Here, the groove depth of groove 14 is made as h, groove width is made as g, the par between the adjacent groove 14 of fin suction surface 13a is made as M, the length of this par is made as ML.Dotted line i representes not form the fin suction surface 13a under the situation of groove 14.Setting prolongs the imaginary intersection point 14p that obtains through the line stretcher with fin suction surface 13a and groove sidepiece 14a, and groove width g and smooth minister's degree ML are the length between imaginary intersection point 14p.

In addition; Like Fig. 5 and shown in Figure 6; With fin pressure side 13b is benchmark; Dotted line K is made as the isopachytes of fin at thickness t e1 or fin thickness t e2 at all side end 15b place in fin at 15a place, fin outer circumferential side end, and the groove bottom 14b of groove 14 forms than isopachytes K and leans on fin suction surface 13a side.That is, groove 14 is located at the position of leaning on fin suction surface 13a side than isopachytes K.In addition, with the relation as the par length M L of the groove depth h of groove 14 and par M, < mode of par length M L forms groove 14 to satisfy groove depth h.In addition, make the groove depth hc at the middle body 15c place between all side end 15b in fin outer circumferential side end 15a and the fin, bigger than near the groove depth ht all side end 15b near groove depth ht the fin outer circumferential side end 15a and the fin.

Flowing of the fin suction surface 13a of 1 fin 8c when Fig. 8 representes to make fin 8c suck regional E1 through impeller on the impeller 8a of this structure that on fin 8c, has a groove 14 and the air of fin pressure side 13b.Fig. 8 is the explanatory drawing that flows of the air of expression fin 8c when sucking regional E1 through impeller.

When fin 8c sucks regional E1 through impeller, suck air and on fin suction surface 13a, pass through from fin outer circumferential side end 15a.Here, owing on fin suction surface 13a, be provided with groove 14, so the inside of groove 14 is negative pressure, the air-flow that has towards the direction composition of groove 14 inside that forms as shown in arrow 20.Therefore, even air stream goes and will on fin suction surface 13a, peel off along with effluent downstream, air stream also can airfoil suction surface 13a furthers.And, since in the fin in downstream side the airfoil suction surface 13a of all side end 15b place air-flow that furthers, in fin, peel off whirlpool during all side end 15b disengagings so can reduce air-flow.

In addition, Fig. 9 is the fin suction surface 13a of 1 fin 8c when being illustrated in fin 8c and blowing out area E 2 through impeller and the explanatory drawing that flows of the air on the fin pressure side 13b.When fin 8c blows out area E 2 through impeller, suck air all side end 15b in fin and on fin suction surface 13a, pass through.Here, owing on fin suction surface 13a, be provided with groove 14, so the inside of groove 14 is negative pressure, the air-flow that has towards the direction composition of groove 14 inside that forms as shown in arrow 21.Therefore, even air stream goes and will on fin suction surface 13a, peel off along with effluent downstream, air stream also can airfoil suction surface 13a furthers.And, since at the 15a place, fin outer circumferential side end in downstream side the airfoil suction surface 13a air-flow that furthers, when fin outer circumferential side end 15a breaks away from, peel off whirlpool so can reduce air-flow.

Like this; The groove 14 of fin suction surface 13a is located in utilization; Sucking regional E1 and blowing out area E 2 and all can suppress air stream peeling off on fin suction surface 13a, the result can reduce air-flow and when blowing out area E 2 and break away from, peel off whirlpool from fin outer circumferential side end 15a.

In addition,, extends groove 14 because forming along running shaft direction (fin length direction), thus poor even produce wind speed at the air-flow that passes through along the fin length direction, also can obtain the effect that furthers that produces by groove 14.Therefore, can suppress peeling off of air-flow on the whole.

In addition, owing to can suppress to peel off, so the useful area of stream enlarges between fin, the driving moment of motor also can reduce.Thus, obtain high efficiency cross flow fan.

In addition, on the cross section vertical with running shaft, many grooves that are formed at the fin suction surface 13a of cross flow fan were opened ML ground, the interval setting of regulation in 14 minutes, and between adjacent groove 14, had par M.Do not having along fin string of a musical instrument L direction under the situation that the compartment of terrain forms groove 14 continuously, even utilize groove 14 to produce negative pressure, air-flow can not cause instability once more attached on the fin suction surface 13a.That is, utilize the effect that furthers that produces by groove 14 to flow after having crossed groove 14, want once more attached on the fin suction surface 13a that is connected with groove 14 along fin suction surface 13a flow air.For this reason, through constituting the par M that between adjacent groove 14, has length M L, can obtain the length when adhering to once more fully, thereby steady air current ground is adhered to once more.Like this, on after the effect that furthers that produces by groove 14, repeatedly once more attached to suction surface, the effect that furthers once more ... Thereby, make the air-flow all-the-time stable.Particularly, has the effect that to bring into play the effect that furthers that produces by groove 14 fully.As a result, cross flow fan can be realized low noiseization and high efficiency, can also prevent to peel off to the variation of flowing resistance, prevents the adverse current to fan that is caused by the instability that blows out air-flow.

In addition, on the cross section vertical, be formed at the joint that the groove sidepiece 14a of many grooves 14 of fin suction surface 13a is connected with fin suction surface 13a and for example form roughly circular shape with having rounded shapes with running shaft.Therefore, when air-flow is furthered by groove 14 and flows to the fin suction surface 13a in downstream side, can prevent the airflow strikes bight and the pressure oscillation that produces.Thereby, can obtain the further cross flow fan of low noiseization and high efficiency.In addition, connection 2 groove sidepieces 14a of 1

groove

14 and 2 bights of fin suction surface 13a are all formed roughly circular shape.Thus, even fin 8c makes the direction of air-flow sucking regional E1 and blowing out area E 2 upsets, also all can in area E 1, E2, suppress to peel off.

In addition, on the cross section vertical, groove bottom 14b is formed the shape with fillet, and will form the shape that broadens towards fin suction surface 13a with the continuous groove sidepiece 14a of groove bottom 14b with running shaft.Groove bottom 14b for example is circular-arc, so the air-flow of the inside of groove can circulate smoothly, is stable.In addition, groove sidepiece 14a is through having inclination with the mode that broadens towards fin suction surface 13a, can be in groove 14 steering flow and obtain the effect that furthers effectively.Thereby, can obtain the cross flow fan of further low noise and high efficiency.

In addition, the groove bottom 14b with groove 14 forms than isopachytes K by fin suction surface 13a side.For example near the fin thickness all end 15b is made as about 0.5mm near with fin peripheral end 15a or in the fin, and the fin thickness at fin central part 15c place is made as under the situation about 1.5mm, and isopachytes K is about 0.5mm apart from fin pressure side 13b.Because lean on the position of fin suction surface 13a to form groove 14 than this fin isopachytes K, so the groove depth hc at fin central part 15c place constitutes below the 1.0mm.For example groove depth h is made as about 0.25mm, near all end 15b, about fin thickness is than 0.75mm, on the fin suction surface 13a of big part groove 14 is set near fin peripheral end 15a or in the fin.Through forming said structure, can obtain the effect that furthers by groove 14 generations, even and formed groove 14, also can guarantee the thickness of fin 8c, improve intensity.

In addition, satisfy groove depth h < par length M L landform grooving 14.That is, many grooves 14 of fin suction surface 13a that are formed at cross flow fan form along the fin string of a musical instrument direction interval ML of regulation at least separately on the cross section vertical with running shaft.The action effect that is produced by par M has been explained in the front; Through making par length M L bigger than groove depth h; Can utilize par M to realize air-flow adhering to once more after crossing groove 14 reliably; The effect that furthers repeatedly and adhering to once more, thus make air-flow can not peel off the ground all-the-time stable from fin suction surface 13a.Therefore, acquisition can realize the cross flow fan of low noiseization and high efficiency.

In addition, though form the structure that the whole surface of the fin suction surface 13a of all side end 15b in from fin outer circumferential side end 15a to fin is provided with groove 14, the present invention is not limited thereto.In fin outer circumferential side end 15a and fin, near at least one square end portion of all side end 15b groove 14 being set gets final product.For example also can be following this structure: several, 2 grooves 14 for example are set, and several, 2 grooves 14 for example are set near all side end 15b in fin near fin outer circumferential side end 15a.In addition, several, 2 grooves 14 for example can only be set near fin outer circumferential side end 15a also, also can be that several, the sort of structure of 2 grooves 14 for example only are set near all side end 15b in fin on the contrary.All side 15b are provided with groove 14 in the fin that becomes upstream side through becoming the fin outer circumferential side 15a of upstream side and blowing out area E 2 at the regional E1 of suction at least, can effectively utilize groove 14 and reduce peeling off of air streams.

Utilization is equiped with the structure of the device of cross flow fan 8, is sucking under the situation that regional E1 is easy to peel off at air-flow, becomes that groove 14 to be set near the fin outer circumferential side end 15a of upstream side of air-flow be effective sucking regional E1.In addition, blowing out under the situation that area E 2 is easy to peel off at air-flow, it is effective in blowing out area E 2 and become the fin of upstream side of air-flow, near all side end 15b groove 14 being set.

But; Like Fig. 8 and shown in Figure 9; If on the cross section vertical with running shaft, fin suction surface 13a from fin outer circumferential side end 15a to fin in the whole surface of all side end 15b groove 14 is set, then no matter air-flow is desired in which position of fin suction surface 13a to peel off; Can both prevent the generation that this is peeled off, so be provided with more effective like this.

In addition, more than, the groove 14 that extends along the running shaft direction of the fin suction surface 13a of fin 8c is formed the long groove 14 from an end to the other end of fin 8c, but groove 14 also can be arranged on a part.For example, just can bring into play effect as long as the arbitrary at least part in middle body, an end and the other end of fin length direction is provided with groove 14.In addition, many grooves 14 also can not be identical length.In addition, many grooves 14 also can dispose brokenly.That is, on the fin length direction of fin 8c, the initial position of groove 14 and end position can change according to many grooves 14 variedly.

In addition, groove depth h, par length M L and groove width g also can be different in 1 groove 14.For example also can make groove width g in an end of fin length direction big and in the other end less ground, gradually or phasic Chang.

Through forming all the same groove 14 along the fin length direction, but not form all the same groove 14, thus, the cross section vertical with running shaft changes because of the position of fin length direction.That is, flow under the situation of fin suction surface 13a in the air-flow skew, the quantity of groove 14 changes on the direction of fin string of a musical instrument L.Even air-flow is wanted along the fin length direction small peeling off to take place, also can be spread by near the airflow influence of fin length direction.So, make the wind speed profile homogenization.Thus, reduce noise.

In addition; As shown in Figure 5; On fin string of a musical instrument L direction, near the groove depth hc the fin string central part in the fin peripheral end 15a of fin 8c and the fin between all side end 15b forms bigger than the groove depth ht of all side end 15b sides in above-mentioned fin peripheral end 15a side and the fin.Therefore, can obtain the effect that furthers that produces by groove 14, and the fin thickness of fin 8c can not become as thin as a wafer, just can prevent that the liquation periphery worsens when being shaped, when assembling strength deficiency, boost productivity.

About the shape of fin 8c, roughly under the situation of uniform thickness, from all side end 15b are to fin outer circumferential side end 15a in the fin, stream is constriction gradually at the fin thickness between fin pressure side 13a and the fin suction surface 13b.In this case, when air stream was sucking in the zone from the inside all side inflow of outer circumferential side, the distance between interior all side tabs enlarged especially, and it is unstable that air-flow becomes, but through groove 14 being set, can utilizing the peeling off of effect inhibition air-flow of furthering.With respect to this, under the situation of the sort of airfoil shown in Figure 5,13b compares with the fin pressure side, and the radius of arc of the flap surface of fin suction surface 13a is little, and curvature is big.That is, the fin thickness at the middle body 15c place of fin string of a musical instrument L direction is bigger than the thickness at fin periphery side end 15a, 15b place in fin.Under the situation of this shape, observe the stream distance between adjacent fin 8c, change lessly from all side end 15b in the fin to fin outer circumferential side end 15a, be easy to make air-flow through stable in the process of fin.Therefore,, can suppress small development of boundary layer, make the air stream between fin become air-flow smoothly, prevent that stream between fin is because of the turbulent flow constriction through the sort of groove 14 of this mode of execution further is set at fin suction surface 13a.

In addition, in this mode of execution, arrangement is provided with many grooves 14 along fin length direction almost parallel ground, and forms many grooves 14 along all side end 15b almost parallels ground in fin length direction and fin outer circumferential side end 15a and the fin.As long as on the cross section vertical, be formed with many grooves 14, just can play the effect that furthers, so, also can play same effect even tilt slightly with respect to all side end 15b in fin outer circumferential side end 15a, the fin along the fin length direction with running shaft.Many the grooves 14 of for example arranging setting also can advance or twist with respect to running shaft with retreating and form along the sense of rotation of impeller 8a.

As stated; The cross flow fan of this mode of execution is characterised in that, comprising: the impeller monomer, and it possesses discoideus support plate 8b and a plurality of fin 8c; The rotating center of above-mentioned support plate 8b is positioned at central part; Above-mentioned a plurality of fin 8c extends along the running shaft direction along the periphery configuration of support plate 8b, and two ends are supported plate 8b supporting; Impeller 8a constitutes this impeller 8a through fixedly mounting a plurality of above-mentioned impeller monomer 8d along above-mentioned running shaft direction; The groove 14 of many concavities, the sense of rotation that they are located at respect to above-mentioned fin 8c is the surperficial fin suction surface 13a in back, these grooves 14 extend along above-mentioned running shaft directions; Separately the compartment of terrain of regulation is provided with above-mentioned groove 14; And between adjacent groove 14, has a par M; Thereby through utilizing groove 14 to produce negative pressure; The air stream that can airfoil suction surface 13a furthers makes the air-flow of having crossed groove 14 be attached to fin suction surface 13a once more and is difficult for peeling off from fin suction surface 13a.And, can be suppressed at fin the suction surface side development of boundary layer and peel off, impel the useful area of the stream between fin to enlarge, reduce the driving moment of motor.Therefore, acquisition can realize the cross flow fan of low noiseization and high efficiency.

In addition; This cross flow fan 8 is being configured in suction side stream E1 and is blowing out between the E2 of effluent road; In the stream E1 of suction side, set heat exchanger 7, utilize heat exchanger 7 and the suction air of seeing off by cross flow fan 8 to carry out heat exchange, this suction air is blown out in the indoor air regulator through blowing out effluent road E2 with the mode of surrounding impeller 8a; Through installing the described cross flow fan 8 of this mode of execution, can obtain quiet and energy-conservation air regulator.In addition; Even increase in the upstream side flowing resistance; Air-flow also is difficult for peeling off, and peels off whirlpool can also utilize groove 14 to reduce flow shedding fin 8c the time, blows out stable air-flow; So can when the cooling operation of air regulator, prevent, thereby prevent impeller 8a dewfall and to the outside drain dew from indoor adverse current to cross flow fan 8.

Mode of execution 2.

Figure 10 is the stereogram of impeller 8a of the cross flow fan of expression mode of execution 2 of the present invention; Figure 11 is the figure of part of motor side of the impeller of expression cross flow fan; (a) of Figure 11 is the stereogram of a part of the impeller 8a of expression motor side, and (b) of Figure 11 is the explanatory drawing of the side-looking of this impeller 8a.(b) of Figure 11 representes that with the mode of partial cutaway part that cuts away and adjacent with it ring portion 8b represent fin 8c together near the side of the ring portion 8b of motor.In each figure, represent the part identical or suitable with mode of execution 1 with mode of execution 1 identical reference character.

On the impeller 8a in this mode of execution, the fan axle sleeve 8e that is fixed in motor reel 12a is the outstanding structure of private side to the impeller monomer 8d of the end that is positioned at impeller 8a.Shown in figure 10, the impeller 8a of cross flow fan 8 has a plurality of impeller monomer 8d along running shaft direction AX.Impeller monomer 8d comprises discoideus support plate and a plurality of fin 8c; The rotating center of above-mentioned support plate is positioned at central part, for example is ring portion 8b here, and above-mentioned a plurality of fin 8c are along the periphery configuration of ring portion 8b; Extend along the running shaft direction, and two ends are supported by ring portion 8b.Impeller monomer 8d is for example by thermoplastic resin formed forming such as AS resin, ABS resins, for example utilize ultrasonic welding etc. a plurality of along running shaft direction AX fixed installation, be that 5 impeller monomer 8d form impeller 8a here.And, being provided with fan axle sleeve 8e at the center of the ring portion 8b of the end of motor side, the motor reel 12a (representing among Fig. 3) of fan axle sleeve 8e and motor 12 is fixing by for example screw etc. at fixing part 16.Through running shaft, utilize the rotation of motor 12 to come drives impeller 8a rotation at fixing part 16 fixed motor axle 12a and impeller 8a.

In this mode of execution, fixedly the fan axle sleeve 8e of impeller 8a and motor 12 is inner outstanding to impeller, and the fixing part that is fixed in motor reel 12a forms the inboard that is positioned at impeller monomer 8da.Through forming said structure, can keep the horizontal unchangeably wide of air regulator, make the length of the total length increase fan axle sleeve 8e of impeller 8a, so can improve the air-supply characteristic.Be following structure on the impeller monomer 8da of the end that is positioned at motor 12 sides that constitutes in the above described manner: can supply the fixed block insertion at the tapped hole 16 fan attachment axle sleeve 8e of place and motor reel 12a the time, the part is not provided with fin 8c ground and has opening portion C.This opening portion of expression in the circle C of Figure 11.For example on another impeller monomer 8d; Fin 8c is provided with the spending equably with 360 on every side of running shaft as axle; But on impeller monomer 8da; The fin 8c of the part of facing mutually with tapped hole 16 pulls out regulation sheet number, for example is 1 and be not provided with here, can see tapped hole 16 from opening portion C.

In this mode of execution; Lack a part at the fin of impeller monomer 8da and have under the situation of impeller 8a of structure of opening portion C, on the fin suction surface 13a of the fin 8ca that is positioned at the position of advancing along sense of rotation, be provided with the groove 14 shown in the mode of execution 1 at least than this opening portion C.

Interval at adjacent fin 8ca of opening portion C and fin 8cb is bigger than the interval between other fins, thus with the stream that between other fins, forms in the air that circulates compare, more air flows into this interval and is easy to peel off.When air-flow is peeled off, send this abnormal noise of smacking one's lips in the wide stream that opening portion C forms.With respect to this, in this mode of execution, on the fin suction surface 13a of the fin 8ca of 1 of the sense of rotation downstream control of the fin 8c of space C, be formed with many grooves 14 that extend along the length direction of fin 8c at least.In mode of execution 1, explain,, utilize groove 14 to further air-flow and suppress peeling off of air-flow,, can reduce, obtain quiet cross flow fan by the noise of peeling off generation so compare with the situation that does not form groove 14 like Fig. 8 and shown in Figure 9.

The structure of groove 14 is identical with mode of execution 1.On the fin suction surface 13a of the fin 8ca that is being positioned at the position that the C of ratio open portion advances at least along sense of rotation, when the groove 14 shown in the mode of execution 1 is set, the stream of flow air between these fins had effect.In addition, through also on the fin suction surface 13a of other fins 8c, groove 14 being set, can further make peeling off between the whole inhibition of impeller fin.Owing to can suppress peeling off of air-flow,, reduce the driving moment of motor so can enlarge the useful area of stream between fin.

In addition; On the fin suction surface 13a of the fin 8ca that not only is being positioned at the position that the C of ratio open portion advances, groove 14 is set along sense of rotation; And shown in region D, also when on the multi-disc fin 8c of the part that is positioned at the position that the C of ratio open portion advances along sense of rotation groove 14 being set, can be further effective.In addition, when on comprising the fin suction surface 13a of the C of ratio open portion, groove 14 being set by the multi-disc fin 8c of the fin 8cb of sense of rotation opposition side, can be further effective.

In addition, in Figure 11, form in order to supply fixed block to insert fixing

part

16, and 1 fin 8c is set less, but the present invention is not limited thereto.For example sometimes also on impeller monomer 8d not with uniformly-spaced but a plurality of fin 8c are set with unequal-interval.In this case, when constitute fixing part 16 and at interval wide part mutually in the face of the time, can fixed block be inserted fixing part 16.Like this; Even forming in order to supply fixed block to insert fixing part 16 under the local situation that enlarges the opening portion C that forms in the interval that makes fin 8c; As long as at least on the fin suction surface 13a sense of rotation RO of the impeller 8a side fin 8c adjacent, become the surface, back with respect to sense of rotation RO, be provided with along the groove 14 of many concavities of running shaft direction AX extension and get final product with opening portion C.

As stated; Through cross flow fan is comprised: impeller monomer 8d; It possesses discoideus support plate 8b and a plurality of fin 8c, and the rotating center of above-mentioned support plate 8b is positioned at central part, and above-mentioned a plurality of fin 8c are along the periphery configuration of support plate 8b; Extend along running shaft direction AX, and two ends are supported plate 8b supporting; Impeller 8a constitutes this impeller 8a through fixedly mount a plurality of impeller monomer 8d along running shaft direction AX; Motor 12, the motor reel 12a of this motor 12 is fixed on the support plate 8b of the end that is positioned at impeller 8a, this motor 12 drives impeller 8a rotation; Be fixed in the fixing part 16 of motor reel 12a, it is positioned at the inboard of impeller monomer 8d; Opening portion C with local expansion the in interval of the fin 8c of impeller monomer 8d, constitutes this opening portion C in order to supply fixed block to insert fixing part 16; At least on the fin suction surface 13a sense of rotation RO of the impeller 8a side fin 8ca adjacent, become the surface, back with respect to sense of rotation RO with opening portion C; Be provided with along the groove 14 of many concavities of running shaft direction AX extension, peel off from fin suction surface 13a thereby can suppress air-flow.Therefore, can obtain stable air-flow, reduce noise.

In addition, of enforcement mode 1, also can particularly between groove adjacent on the cross section vertical, have the mode of par M with running shaft, separately the compartment of terrain of regulation is provided with groove 14.Through forming said structure, can see fixing part 16, so make easily.And, even the part between fin is provided with opening portion C, also can utilizes the adhesion effect once more that furthers effect and produce that produces by groove 14 to make steady air current, thereby reduce noise by par M, obtain high efficiency cross flow fan.

In addition, through the installing cross flow fan, can obtain not ear-piercing quiet and high-quality air regulator.

Here, put down in writing because the structure that the air-flow ground inhibition of the part that the fixing part of assembling procedure former thereby the interval of considering adjacent fin have enlarged is peeled off.But the present invention is not limited thereto; Under the situation of the part that enlarges at the interval that has constituted adjacent fin because of other reasons; Also be at least on the fin suction surface 13a of the fin 8c of the sense of rotation side of at interval wide part, many grooves 14 that extend along running shaft direction AX be set get final product.

Mode of execution 3.

Below, according to description of drawings mode of execution 3 of the present invention.Figure 12 is the profile diagram of impeller 8a of the cross flow fan 8 of this mode of execution of expression; The side view of (a) expression cross flow fan 8 of Figure 12; The S – S sectional view of (b) expression Figure 12 of Figure 12 (a); The lower half portion of Figure 12 (b) is illustrated in the state that each impeller monomer 8d goes up the multi-disc fin of visible opposite side, and upper half part is represented 1 fin 8c.In the drawings, represent the part identical or suitable with mode of execution 1 and mode of execution 2 identical reference characters with mode of execution 1,2.In (b) of Figure 12, dot and dash line also is to link motor reel 12a and fan shaft 8f and the imaginary spin axis of representing rotating center O.Shown in figure 12, the impeller 8a of cross flow fan 8 has a plurality of impeller monomer 8d along running shaft direction AX.Impeller monomer 8d comprises: discoideus support plate, here for example for ring portion 8b, and its rotating center is positioned at central part; A plurality of fin 8c, they extend along the running shaft direction, and two ends are supported by ring portion 8b along the periphery configuration of ring portion 8b.Fin 8c in this mode of execution; Forming fin root at the joint that is connected with ring portion 8b as portion at one end (in Figure 12 (b) towards the right side) on the impeller monomer 8d; The shape in the cross section vertical with running shaft is maximum, and sectional shape reduces gradually afterwards.And, form in the other end of fin 8c as the fin length direction front end that is fixedly installed in the joint of adjacent impeller monomer 8d (in Figure 12 (b) towards the left side), the sort of pointed shape that the sectional shape vertical with running shaft is minimum.Promptly; On the cross section vertical with running shaft; Form the fin thickness that makes the fin 8c that forms by fin suction surface 13a and fin pressure side 13b and as the fin string of a musical instrument length L 1 that links the length of the straight line of all side end 15b in fin outer circumferential side end 15a and the fin, the shape that reduces from fin root airfoil length direction front end.Therefore, on the cross section shown in (b) of Figure 12, all side end 15b all form the shape from the interior tilt of fin root airfoil length direction front end airfoil 8c in fin outer circumferential side end 15a and the fin.In this mode of execution, also become on the fin suction surface 13a on surface, back in sense of rotation with respect to fin 8c, be provided with along the groove 14 of many concavities of running shaft direction AX extension.

In manufacturing process, for example utilizing, thermoplastic resins such as AS resin, ABS resin carry out ester moulding and form impeller monomer 8d.On the impeller 8a a plurality of fin 8c are being fixed between 2 ring portion 8b, the side's ring portion 8b and the ring portion 8b of for example motor side are configured as one and constitute impeller monomer 8d.Figure 13 representes the state of the demoulding of this ester moulding.Figure 13 is the sectional view of expression mould 17,18, and expression respectively is formed with the state of 1 fin 8c up and down, is formed with a plurality of fin 8c but in fact arrange in the form of a ring to be provided with in the inboard of the periphery of ring portion 8b.When carrying out ester moulding, make the mould 17,18 that the shape with the form of concavo-convex mould and a plurality of fin 8c is complementary, with the high-pressure injection moulding resin, mould 18 is moved along the direction of arrow in the cooling back in these moulds, thus the impeller monomer 8d that acquisition is formed by resin.

Shown in this arrow, carrying out under the situation of the demoulding along running shaft direction AX, need the shape of impeller monomer 8d be formed can be along the shape of the running shaft direction AX demoulding.For this reason, fin 8c constitutes the fin root 8c1 in the part of the continuous fin 8c of conduct and ring portion 8b on impeller monomer 8d, and sectional shape is maximum, and at fin length direction front end 8c2, sectional shape is less.Through forming the sectional shape of this fin 8c, the demoulding in the time of can successfully carrying out ester moulding.Here, for example from the fin root 8c1 of fin 8c airfoil length direction front end 8c2, the sectional shape that makes fin reduces gradually and forms the fin 8c of pointed shape.All side end 15b form in the inboard of fin 8c to have the shape that the mode of the angle of several years degree for example tilts in fin outer circumferential side end 15a and the fin.Therefore, when carrying out the demoulding, can be in the moment of having moved mould 18 a little, at mould 18 and be shaped and form the space between the impeller monomer 8d that forms, divide at whole fin 8c and open, so can be easily and successfully carry out the demoulding.

And; When the fin length direction front end 8c2 of the impeller monomer 8d of the pointed shape that ester moulding is formed in methods such as utilizing for example ultrasonic welding is fixedly mounted on the ring portion 8b that is positioned at the adjacent position, along running shaft direction AX fixedly impeller monomer 8d form impeller 8a each other.

In this mode of execution, also on the fin suction surface 13a of fin 8c, be provided with the groove 14 same with mode of execution 1.That is, on the fin suction surface 13a of fin 8c, be provided with the groove 14 of many edges as the concavity of the fin length direction extension of running shaft direction AX.On the cross section vertical with running shaft; For example be configured in many grooves 14 between all side end 15b in fin outer circumferential side end 15a and the fin equably; Have groove bottom 14b and 2 relative groove sidepiece 14a, the shape of groove bottom 14b is formed structure with fillet, is circular shape roughly here.The groove sidepiece 14a continuous with groove bottom 14b forms the shape that airfoil suction surface 13a broadens, and the joint that groove sidepiece 14a is connected with fin suction surface 13 also forms the shape with fillet.The groove 14 that extends along running shaft direction AX is not have concavo-convex shape along circumferentially the having concavo-convex of impeller 8a along running shaft direction AX.Therefore, be to be fit to utilize the ester moulding mode along the running shaft direction AX demoulding shown in Figure 13 shape of impeller monomer 8d that is shaped.

Next, the shape of further explain fin.Figure 14 is 1 an A – A sectional view in the fin of Figure 12, the cross section of the fin length direction front end 8c2 of expression fin 8c.In addition, Figure 15 is 1 a B – B sectional view in the fin of Figure 12, the cross section of the fin root 8c1 of expression fin 8c.Like Figure 14 and shown in Figure 15, on the cross section vertical with running shaft of cross flow fan, on arbitrary cross section, the shape of fin 8c is all identical, and big or small aspect is maximum at fin root 8c1, and is minimum at fin length direction front end 8c2.

In the Figure 14 in the cross section of representing fin length direction front end 8c2; Fin string of a musical instrument length is made as L12; Groove depth is made as h2, groove width is made as g2, will be made as tmax2 as the thickness of the maximum of the fin thickness of the inscribe diameter of a circle of the fin pressure side 13b of fin 8c and fin suction surface 13a.Equally, in the Figure 15 in the cross section of expression fin root 8c1, fin string of a musical instrument length is made as L11, groove depth is made as h1, groove width is made as g1, the thickness of maximum is made as tmax1.Here, the definition of groove width g and groove depth h is identical with the definition shown in Figure 7 of mode of execution 1.Under the situation of the fin 8c of this mode of execution, tmax1>tmax2 and L11>L12, this fin 8c makes fin string of a musical instrument length L 1 and maximum thickness t max reduce the pointed shape that forms from fin root 8c1 smoothly to fin length direction front end 8c2.About groove 14, in structure example shown in Figure 12, make h1=h2 and make g1=g2, many identical shaped grooves 14 are set on fin suction surface 13a.

Same with mode of execution 1, when fin 8c passes through to suck regional E1, suck air and on fin suction surface 13a, pass through from fin outer circumferential side end 15a.Here, owing on fin suction surface 13a, be formed with many grooves 14 that extend along the fin length direction, so the air stream when sucking air through fin suction surface 13a becomes as shown in Figure 8.That is, the inside of groove 14 is that negative pressure and as shown in arrow 20 becomes the air-flow that has towards the inner direction composition of groove 14.Therefore; Even air-flow begins to peel off at fin outer circumferential side end 15a; The air-flow that also can airfoil suction surface 13a furthers, all side end 15b air-flow that also can airfoil suction surface 13a furthers in leaning on the fin in downstream side is so peel off whirlpool can reduce air-flow all side end 15b break away from fin the time.

In addition, as shown in Figure 9,, suck air all side end 15b in fin and on fin suction surface 13a, pass through when blowing out area E 2 at fin 8c.Here, owing on fin suction surface 13a, be provided with groove 14,, the inside of groove 14 becomes the air-flow that has towards the inner direction composition of groove 14 so being negative pressure and as shown in arrow 21.Therefore, even air-flow goes and will on fin suction surface 13a, peel off along with effluent downstream, air stream also can airfoil suction surface 13a furthers.And,, when fin outer circumferential side end 15a breaks away from, peel off whirlpool so can reduce air-flow at the fin outer circumferential side end 15a in the downstream side air-flow that also can airfoil suction surface 13a furthers.

Like this; The groove 14 of fin suction surface 13a is located in utilization; Sucking regional E1 and blowing out area E 2 and all can suppress the peeling off of air stream on the fin suction surface 13a, the result can reduce air-flow and when blowing out area E 2 and break away from, peel off whirlpool from fin outer circumferential side end 15a.

In addition,, extends groove 14, so, also can obtain the effect that furthers that produces by groove 14 even the wind speed that produces on the fin length direction is poor because forming along running shaft direction AX.Therefore, can suppress peeling off of air-flow on the whole.

In addition, owing to can suppress peeling off of air-flow, so the useful area of stream enlarges between fin, the driving moment of motor also can reduce.Thus, obtain high efficiency cross flow fan.

In addition, same with the Fig. 7 in the mode of execution 1, many grooves 14 that are formed at the fin suction surface 13a of cross flow fan are provided with the mode of separating the interval ML that stipulates on the cross section vertical with running shaft, and between adjacent groove 14, have par M.Like this, through constituting the par M that between adjacent groove 14, has length M L, can obtain the length when adhering to once more fully, thereby steady air current ground is adhered to once more.After the effect that furthers that produces by groove 14, carry out once more attached to suction surface 13a repeatedly on, the effect that furthers once more ... Thereby air-flow is stable all the time.Particularly, has the effect that to bring into play the effect that furthers that produces by groove 14 effectively.As a result, cross flow fan can be realized low noiseization and high efficiency, can also prevent to peel off to the variation of flowing resistance, prevents the adverse current to fan that is caused by the instability that blows out air-flow.

In addition, same with mode of execution 1, on the cross section vertical, be formed at the joint that the groove sidepiece 14a of many grooves 14 of fin suction surface 13a is connected with fin suction surface 13a and for example form roughly circular shape with having rounded shapes with running shaft.Therefore, furthered by groove 14 and when the fin suction surface 13a of side flows downstream, can prevent the airflow strikes bight and the pressure oscillation that produces at air-flow.Thereby, can obtain the further cross flow fan of low noiseization and high efficiency.In addition, connection 2 groove sidepieces 14a of 1

groove

14 and 2 bights of fin suction surface 13a are all formed roughly circular shape.Thus, even fin 8c makes the direction of air-flow sucking regional E1 and blowing out area E 2 upsets, also all can in area E 1, E2, suppress peeling off of air-flow.

In addition, same with mode of execution 1, on the cross section vertical, groove bottom 14b is formed the shape with fillet, and will form the shape that broadens towards fin suction surface 13a with the continuous groove sidepiece 14a of groove bottom 14b with running shaft.Groove bottom 14b for example is circular-arc, so the air-flow of the inside of groove can circulate smoothly, is stable.In addition, groove sidepiece 14a is through having inclination with the mode that broadens towards fin suction surface 13a, can be in groove 14 steering flow and obtain the effect that furthers effectively.Thereby, can obtain the cross flow fan of further low noise and high efficiency.

In addition, same with mode of execution 1, the groove bottom 14b of groove 14 formed than isopachytes K lean on fin suction surface 13a side.Through forming said structure, can obtain the effect that furthers by groove 14 generations, even and formed groove 14, also can guarantee the thickness of fin 8c, improve intensity.

In addition, same with mode of execution 1, on all cross sections vertical, to fin length direction front end 8c2, satisfy groove depth h < par length M L landform grooving 14 from fin root 8c1 with the running shaft direction.Through making par length M L bigger than groove depth h, can utilize par M to realize air-flow adhering to once more after crossing groove 14 reliably, the effect that furthers repeatedly and adhering to once more, thus make air-flow can not peel off the ground all-the-time stable from fin suction surface 13a.Therefore, acquisition can realize the cross flow fan of low noiseization and high efficiency.

Like this, can obtain cross flow fan realization low noiseization and high efficiency that utilizable energy carries out the structure of the demoulding easily and successfully, make productivity preferable through installing this cross flow fan, quiet and energy-conservation air regulator.

Figure 16 is the stereogram of expression according to 1 fin 8c of another structure example of the cross flow fan of this mode of execution.In this structure, make the groove width g of groove 14 or groove depth h inequality along the fin length direction, change at fin root 8c1 and fin length direction front end 8c2.In addition, in Figure 17, amplify the part in the cross section vertical at the fin length direction front end 8c2 place that representes fin 8c with running shaft.Promptly identical with the A – A cross section of Figure 12.Here, about the groove width g2 and the groove depth h2 of the groove 14 of the groove width g1 of the groove 14 of fin root 8c1, groove depth h1, fin length direction front end 8c2, make g1 < g2 and make h1 < h2.The shape of fin 8c forms fin root 8c1 from ring portion 8b side to being free-ended fin length direction front end 8c2 before fixed installation, fin thickness and fin string of a musical instrument length L 1 diminishing pointed shape.In addition, the groove 14 of being located at the concavity of fin suction surface 13a forms groove width g and groove depth h increases from fin root 8c1 airfoil length direction front end 8c2 gradually.

Therefore, except utilizing the effect that furthers that produces by groove 14 to suppress when air-flow is crossed groove 14, the effect that furthers to be changed reposefully along fin length direction (running shaft direction) the peeling off of air-flow.From fin 8c exhaust jet stream the time, flow velocity and wind direction change along the fin length direction reposefully, thereby particularly in blowing out area E 2, with guiding wall 10 contacted flow velocitys and angle change.The pressure oscillation decay like this, blows out air-flow and can not arrive guiding wall 10 simultaneously, so can further realize low noiseization.

In addition; In that image pattern 13 is such when utilizing the mould-forming method that carries out the demoulding of mould 17,18 along fin running shaft direction AX to make; A little tilts all side end 15b along stripping direction in fin outer circumferential side end 15a and the fin, and the whole recess of formation groove 14 is along a little inclination of stripping direction.Therefore, when carrying out ester moulding, be easy to comprising groove 14 in the interior whole fin 8c demoulding.

As a result, cross flow fan can be kept productivity, and can further realize low noiseization and high efficiency.In addition,, can suppress peeling off of air-flow, realize the stable air-flow that blows out, can seek cross flow fan low noiseization and high efficiency for the variation of flowing resistance.

In addition; Fin 8c forms root 8c1 from ring portion 8b side to the fin length direction front end 8c2 that is free-ended the opposing party before fixed installation along the length direction of impeller monomer 8d; Fin thickness and fin string of a musical instrument length L 1 diminishing pointed shape; The sectional shape vertical with the running shaft direction forms gradually and reduces, but the present invention is not limited thereto.For example also can replace making fin 8c to tilt and change the sectional shape ground of fin 8c gradually, make the sectional shape phasic Chang of fin 8c.Employing makes the structure of the sectional shape phasic Chang of fin 8c; Same with the shape that the sectional shape that makes fin 8c changes smoothly; Also can be in the moment of having moved mould 18 a little when the demoulding; Form the space at mould 18 and between the impeller monomer 8d that of being shaped, whole impeller monomer 8d and mould were opened in 18 minutes, so can be easily and the demoulding successfully.

In addition, the groove width g and the groove depth h that are formed at the groove 14 of fin suction surface 13a also can not all form from fin root 8c1 lateral wings leaf length direction front end 8c2 and increase gradually.That is, can form groove 14 groove width g and groove depth h at least one side gradually or interim increasing.As long as become gradually or interim increase with groove depth h arbitrary square along the fin length direction to major general's groove width g.Under the situation of concavity with the groove 14 of phasic Chang, when air-flow was crossed groove 14, the effect that furthers changed along the fin length direction, and from fin 8c exhaust jet stream the time, flow velocity, wind direction also change along the fin length direction.Thus, particularly when blowing out air-flow and in impeller blows out area E 2, contact with guiding wall 10, the flow velocity, the angle that blow out air-flow change, and do not make the pressure oscillation decay thereby can not arrive guiding wall 10 ground simultaneously, have the effect of further low noiseization.

In addition; The fin string of a musical instrument L direction that also can form at Figure 17; Compare with near the groove depth hc the fin string central part 15c between all side end 15b in the fin peripheral end 15a of fin 8c and the fin, the groove depth ht of all side end 15b sides is more shallow in above-mentioned fin peripheral end 15a side and the fin.In this case, even form groove 14 at fin suction surface 13a, the wall thickness of fin 8c can not become as thin as a wafer yet, can not occur in that the liquation periphery worsens when being shaped, when assembling strength deficiency, can boost productivity.

In addition, even the groove width g, groove depth h that make groove 14 at image pattern 16 are also identical with mode of execution 1 with the shape of groove 14 on the vertical cross section of running shaft under the situation that fin root 8c1 and fin length direction front end 8c2 change suchly.That is, the bight that the shape, groove sidepiece 14a that makes par M, groove sidepiece 14a through trying every possible means and fin suction surface 13a are become, shape of groove bottom 14b etc. are identical with mode of execution 1, can further reduce noise, obtain high efficiency cross flow fan.

In addition, Figure 18 representes the another structure example of the cross flow fan of this mode of execution, is the plan view of 1 fin 8c of expression.In this structure, only at the residing fin outer circumferential side of the fin outer circumferential side end 15a of fin suction surface 13a setting 3 grooves 14 for example.The shape of single groove 14 is identical with Figure 17.

So only be provided with in the structure of groove 14 at the fin outer circumferential side; Obtain the effect that furthers of groove 14 sucking fin outer circumferential side end 15a that regional E1 air-flow peels off at first; So can suck peeling off of regional E1 inhibition air-flow; Form stable air-flow, thereby can prevent that air-flow from peeling off blowing out area E 2, obtaining can quiet and energy-conservation cross flow fan.

In addition, also can both the 15a side be provided with many grooves 14 in fin outer circumferential side end, also all side end 15b sides are provided with many grooves 14 in fin.That is, can be not at the middle body of fin 8c groove 14 ground be set, all sides are provided with many grooves 14 in fin outer circumferential side and fin respectively.Groove 14 is being located in the structure of all side end 15b sides in the fin, can be being obtained to suppress air-flow especially and blow out the effect that area E 2 is peeled off.On arbitrary at least side's through all side end 15b sides in fin outer circumferential side end 15a side and fin the fin suction surface 13a, many grooves 14 that extend along running shaft direction AX are set, can obtain the effect that furthers to a certain degree.

In mode of execution 1, explain; Utilize the structure of the device of installing cross flow fan 8; Sucking under the situation that regional E1 is easy to peel off at air-flow, being located at groove 14 sucking regional E1 is effective near becoming the fin outer circumferential side end 15a of upstream side of air-flow.In addition, blowing out under the situation that area E 2 is easy to peel off at air-flow, it is effective near all side end 15b that groove 14 is located in blowing out area E 2 and become the fin of upstream side of air-flow.

The above-mentioned groove 14 of being located at fin suction surface 13a is set to fin length direction front end 8c2 from fin root 8c1, and the length of groove 14 forms all identical.Here, the structure example that the length that makes groove 14 can change is described.Figure 19 representes the another structure example of the cross flow fan of this mode of execution, is the plan view of 1 fin 8c of expression.In this structure, many grooves 14 are not arranged on fin suction surface 13a fin root 8c1 be arranged on fin length direction front end 8c2 side.The shape of single groove 14 is identical with Figure 15, forms from fin root 8c1 airfoil length direction front end 8c2 the groove depth h of groove 14 and arbitrary at least side of groove width g are increased.

At fin 8c is under the situation of pointed shape, in fin length direction front end 8c2 side, and the fin thin thickness, fin string of a musical instrument length L 1 is short.Therefore, compare with fin root 8c1 side, the interval between the fin pressure side 13b of fin suction surface 13a and adjacent fin is wide, peels off easily.Therefore,, can utilize the effect that furthers that negative pressure obtained that produces by groove 14 to suppress to peel off, realize low noiseization through forming groove 14 in fin length direction front end 8c2 side at least.

In addition, many grooves 14 that are formed at fin suction surface 13a form the fin length direction along fin 8c, and length J gradually changes.The end of the fin root 8c1 side of many grooves 14 is made as groove side end 14c; Make the groove side end 14c of many grooves 14 be formed obliquely groove 14, so the length J of the fin length direction of groove 14 along the peripheral direction variation gradually of ring portion 8b with increasing with respect to impeller rotating shaft.In structure shown in Figure 19, make the elongated gradually mode of length J of groove 14 be formed slopely groove 14 with all side end 15b in the 15a airfoil of fin outer circumferential side end.

Because the quantity of the groove 14 of fin string of a musical instrument direction is different because of the position of fin length direction, so in sucking regional E1, air stream shown in Figure 7 is different because of the position of fin length direction.Under the situation in cross flow fan being attached to air regulator for example, suck air-flow along the fin length direction because of the influence of resistance body etc. makes sometimes and sucking regional E1 skew.Squint even suck air-flow, in structure shown in Figure 19, the effect that furthers is changed more smoothly along the fin length direction.Therefore, can make the wind speed profile homogenization, inhibition speed is local increasing on flap surface, makes steady air currentization and realize low noiseization.

In addition, Figure 20 representes the another structure example of the cross flow fan of this mode of execution, is the plan view of 1 fin 8c of expression.In this structure example, be the structure that all side end 15b shorten the length J of groove 14 gradually in the 15a airfoil of fin outer circumferential side end.Adopt the groove 14 of this structure, same with Figure 19, even suck air-flow sucking regional E1 skew because of the influence of resistance body etc. makes, the effect that furthers is changed more smoothly along the fin length direction along the fin length direction.Therefore, can make the wind speed profile homogenization, suppress flow velocity local increasing on flap surface of air-flow, realize stable air-flow and realize low noiseization.

In addition, in Figure 19 and the sort of structure shown in Figure 20, the flow velocity when contacting with guiding wall 10, the variation of angle change along the fin length direction smoothly, pressure oscillation decay, low noiseization more.

In addition, Figure 21 representes the another structure example of the cross flow fan of this mode of execution.The length J all side end 15b in the 15a airfoil of fin outer circumferential side end that constitute groove 14 extend near the central part gradually, and all side end 15b shorten gradually in the airfoil near central part.In this structure, squint sucking regional E1 even suck air-flow because of the influence of resistance body etc. makes along the fin length direction, the effect that furthers is changed along the fin length direction more smoothly.Therefore, can make the wind speed profile homogenization, suppress flow velocity local increasing on flap surface of air-flow, realize low noiseization.In addition, blowing out regions E2, blowing out air-flow and change reposefully along the fin length direction, the flow velocity when contacting with guiding wall 10, angle smoothing ground change.Therefore, pressure oscillation decay, low noiseization more.

In addition, in the structure of Figure 21, the part of the fin thin thickness of all side end 15b in fin outer circumferential side end 15a and fin, the length of shortening groove 14, along fin string of a musical instrument L direction, near the part of the fin thicker the central part increases the length of groove 14.Therefore, the intensity of whole fin 8c can be guaranteed, buckling when utilizing method such as ultrasonic welding fixed installation impeller monomer 8d each other can be prevented.

As a result, cross flow fan is low noiseization further, and the intensity can guarantee the assembling of impeller the time, so assembling loss obtains peace and quiet and the good air regulator of productivity through installing this cross flow fan.

In addition, Figure 22 representes the another structure example of the cross flow fan of this mode of execution.This structure changes the fin length direction length J of many grooves 14 that are formed at fin suction surface 13a brokenly.In this case, according to the difference of the position of fin length direction, the quantity of groove 14 changes along fin string of a musical instrument L direction.Therefore,, desire small peeling off to take place, also can spread under the effect of nigh air-flow along the fin length direction even air-flow squints at the regional E1 of suction.So, can make the wind speed profile homogenization, realize low noiseization.

In addition, though at the upstream side of cross flow fan because of for example dust accretion squints air-flow in filter 5 grades, also can prevent peeling off of air-flow, make to suck steady air currentization.In addition, in blowing out area E 2, too, blow out air-flow and change brokenly along the fin length direction, flow velocity, angle when contacting with guiding wall 10 change brokenly.Therefore, pressure oscillation decays brokenly, can realize low noiseization.

When the groove 14 of set concavity is arranged on and thinks the position of peeling off according to situation that cross flow fan is moved on fin suction surface 13a, be effective.

As stated; Through cross flow fan is comprised: impeller monomer 8d; It possesses discoideus support plate 8b and a plurality of fin 8c, and the rotating center of above-mentioned support plate 8b is positioned at central part, and above-mentioned a plurality of fin 8c are along the periphery configuration of above-mentioned support plate 8b; Extend along the running shaft direction, and two ends are supported by above-mentioned support plate 8b; Impeller 8a; Fixedly mount a plurality of above-mentioned impeller monomer 8d and constitute this impeller 8a along above-mentioned running shaft direction; Make the sectional shape vertical at a joint 8c1 place end, that be connected with above-mentioned support plate 8b of above-mentioned fin 8c with running shaft; The sectional shape vertical with above-mentioned running shaft than joint 8c2 place the other end, that be connected with above-mentioned support plate 8b of above-mentioned fin 8c is big; And become in sense of rotation on the fin suction surface 13a on surface, back, the groove 14 of many concavities of the above-mentioned running shaft direction extension in edge is set, thereby can obtain to keep the cross flow fan of productivity and ability low noiseization with respect to above-mentioned fin 8c.In addition, can prevent to get the unstable adverse current that takes place to cross flow fan because of the rheology that puffs away.In addition, even flowing resistance increases, air-flow also is difficult for peeling off at fin suction surface 13a, and it is also stable to blow out air-flow.

In addition, in each figure of Figure 18～Figure 22, having explained that at least one side with the groove width g of groove 14 and groove depth h constitutes at fin length direction front end 8c2 compares at the big example of fin root 8c1 side, but the present invention is not limited thereto.When at ester moulding, to make stripping direction be not impeller sense of rotation but other directions, also can adopt the groove width g and the identical groove 14 of groove depth h of groove 14.In addition; Consider that when ester moulding, making stripping direction is the impeller sense of rotation; With fin length direction front end 8c2 is that benchmark changes slot length; But when making stripping direction be other directions, can be benchmark or be benchmark, the groove of more irregular position and length is set again with fin root 8c1 with the arbitrary place between fin length direction front end 8c2 and fin root 8c1.Extend as long as on fin suction surface 13a, constitute at least along running shaft direction AX; And the mode to have par M between the adjacent groove 14 separately is provided with groove in the compartment of terrain of regulation; The air-flow that just can utilize groove 14 airfoil suction surface 13a to further and desire to peel off makes this air-flow become stable air-flow.

In addition, each figure of image pattern 16～Figure 22 is such to be changed groove width G or makes groove depth h change or make the structure of the sort of groove 14 that slot length J changes, and the shape that yet can be applied in the fin 8c of mode of execution 1 is not in the situation of tip, plays same effect.In addition, this structure equally also can be applied in the mode of execution 2, plays same effect.

Particularly in air regulator; As shown in Figure 2; When the impeller of fin 8c through heat exchanger 7 sides sucks regional E1; Because electric dust collector 6, filter 5 and the different a plurality of resistance bodies of size, flowing resistance of only being located at the suction port 2 etc. of air conditioner main body top set unevenly, produce uneven so suck wind speed.In addition; Because of dust when flowing resistance is increased, air-flow is with respect to the change in angle of attack of fin; Peel off easily; The rheology that puffs away gets unstable and to the fan adverse current, thereby when cooling operation, possibly make the impeller dewfall and to the outside drain dew, thereby gets floor wet.For this reason; Through any cross flow fan in installing mode of execution 1～mode of execution 3; Stable air-flow be can obtain, low noiseization and high efficiency sought, can also be with respect to the variation of flowing resistance and prevent peeling off of air-flow; Prevent the adverse current that takes place because of the instability that blows out air-flow, obtain quiet and high-quality air regulator to fan.

Like this; Adopt mode of execution 1～mode of execution 3; Owing on the fin suction surface 13a of the impeller of cross flow fan, form many grooves that extend along running shaft direction AX, so can realize flowing of stable air, obtain that sense of hearing is good, low noise and peace and quiet, high efficiency and energy-conservation cross flow fan.In addition,, can realize flowing of stable air, can when cooling operation, prevent the impeller dewfall and, can obtain high-quality air regulator to the outside drain dew through installing this cross flow fan.

In addition, in mode of execution 1～mode of execution 3, explained cross flow fan is installed in the structure example in the air regulator for example, but the present invention is not limited thereto.For example also can be applied as the cross flow fan in other devices such as being installed in air curtain.Through using the cross flow fan that can reduce noise, have the effect of the noise minimizing that can make the device that is equiped with this cross flow fan.

Description of reference numerals

1, air conditioner main body; 2, suction port; 3, blow-off outlet; 7, heat exchanger; 8, cross flow fan; 8a, impeller; 8b, support plate; 8c, fin; 8c1, fin root; 8c2, fin length direction front end; 8d, impeller monomer; 9, stabilizer; 10, guiding wall; 12, motor; 12a, motor reel; 13a, fin suction surface; 13b, fin pressure side; 14, groove; 14a, groove sidepiece; 14b, groove bottom; 14P, imaginary intersection point; 15a, fin outer circumferential side end; All side ends in 15b, the fin; 16, fixing part; C, opening portion; E1, suction zone; E2, blow out the zone; L, the fin string of a musical instrument; The length of L1, fin string of a musical instrument L; The fin string of a musical instrument length of L11, fin root 8c1; The fin string of a musical instrument length of L12, fin length direction front end 8c2; M, par; ML, par length; O, rotating center; RO, sense of rotation; G, groove width; The groove width of g1, fin root 8c1; The groove width of g2, fin length direction front end 8c2; H, groove depth; The groove depth of h1, fin root 8c1; The groove depth of h2, fin length direction front end 8c2; Near near the groove depth all side end 15b ht, fin outer circumferential side end 15a and in the fin; Near the fin string of a musical instrument direction middle body of hc, fin groove depth; K, with the fin pressure side isopachytes of the thickness of all side ends in fin outer circumferential side end or the fin of benchmark; The maximum ga(u)ge of tmax, fin; The maximum ga(u)ge of tmax1, fin root 8c1; The maximum ga(u)ge of tmax2, fin length direction front end 8c2.

Claims

1. cross flow fan; It is characterized in that this cross flow fan comprises: the impeller monomer, it possesses discoideus support plate and a plurality of fin; The rotating center of said discoideus support plate is positioned at central part; Said a plurality of fin extend along the running shaft direction, and two ends is supported by said support plate along the periphery configuration of said support plate; Impeller fixedly mounts a plurality of said impeller monomers and constitutes this impeller along said running shaft direction; The groove of many concavities, the sense of rotation that they are located at respect to said fin becomes on the fin suction surface on surface, back, extends along said running shaft direction;

Said groove is separated predetermined distance ground be provided with, and make between the adjacent groove and have the par.

2. cross flow fan; It is characterized in that this cross flow fan comprises: the impeller monomer, it possesses discoideus support plate and a plurality of fin; The rotating center of said discoideus support plate is positioned at central part; Said a plurality of fin extend along the running shaft direction, and two ends is supported by said support plate along the periphery configuration of said support plate; Impeller fixedly mounts a plurality of said impeller monomers and constitutes this impeller along said running shaft direction; Motor, the motor reel of this motor are fixed on the said support plate of the end that is positioned at said impeller, drive said impeller rotation; Be fixed in the fixing part of said motor reel, it is positioned at the inboard of said impeller monomer; Opening portion inserts said fixing part in order to make fixed block, the part, interval of the said fin of said impeller monomer is widened and is formed this opening portion;

The groove of many concavities that will extend along said running shaft direction, be located at least the sense of rotation side of the said impeller fin adjacent with said opening portion, become on the surperficial fin suction surface in back with respect to said sense of rotation.

3. cross flow fan; It is characterized in that this cross flow fan comprises: the impeller monomer, it possesses discoideus support plate and a plurality of fin; The rotating center of said discoideus support plate is positioned at central part; Said a plurality of fin extend along the running shaft direction, and two ends is supported by said support plate along the periphery configuration of said support plate; Impeller fixedly mounts a plurality of said impeller monomers and constitutes this impeller along said running shaft direction;

Make the sectional shape vertical at a joint place end, that be connected with said support plate of said fin with running shaft; The sectional shape vertical with said running shaft than joint place the other end, that be connected with said support plate of said fin is big; And; Become in sense of rotation on the fin suction surface on surface, back, be provided with along the groove of many concavities of said running shaft direction extension with respect to said fin.

4. cross flow fan according to claim 3 is characterized in that,

To be located at the said joint side of said at least the other end of said fin suction surface along the said groove that said running shaft direction is extended.

5. according to any described cross flow fan in the claim 2～4, it is characterized in that,

On the cross section vertical, said groove separately is provided with the compartment of terrain of regulation, and makes between the adjacent groove and have the par with said running shaft.

6. according to claim 1 or 5 described cross flow fans, it is characterized in that,

On the cross section vertical, make the interval of adjacent said groove bigger than the groove depth of the groove of said concavity with said running shaft.

7. according to any described cross flow fan in the claim 1～6, it is characterized in that,

On the cross section vertical with said running shaft, constitute the groove of said concavity by groove bottom and relative groove sidepiece, said groove sidepiece is formed the shape with fillet with the joint that said fin suction surface is connected.

8. according to any described cross flow fan in the claim 1～7, it is characterized in that,

On the cross section vertical with said running shaft; Constitute the groove of said concavity by groove bottom and relative groove sidepiece; Make said groove bottom form shape, and will form the shape that broadens towards said fin suction surface with the continuous groove sidepiece of said groove bottom with fillet.

9. according to any described cross flow fan in the claim 1～8, it is characterized in that,

On the cross section vertical with said running shaft; Said a plurality of fin is circular-arc for roughly between all side ends in the fin outer circumferential side end of the outer circumferential side of said support plate and the fin in interior all sides of said support plate; And make the thickness of the fin of the central part office between all side ends in said fin outer circumferential side end and the said fin; Thickness than the fin at all side ends place in the thickness of the fin at said fin outer circumferential side end place and the said fin is big; At least apart from the fin pressure side that becomes front surface with respect to the said sense of rotation of said fin; Separate the thickness ground of the fin at all side ends place in said fin outer circumferential side end or the said fin, said fin suction surface is provided with the groove of said concavity.

10. according to any described cross flow fan in the claim 1～9, it is characterized in that,

On the cross section vertical with said running shaft; Said a plurality of fin is circular-arc for roughly between all side ends in the fin outer circumferential side end of the outer circumferential side of said support plate and the fin in interior all sides of said support plate, said many grooves is located near at least one square end portion of all side ends in said fin outer circumferential side end and the said fin.

11. according to any described cross flow fan in the claim 1～10, it is characterized in that,

On the cross section vertical, make at least one side of groove width and groove depth of the groove of said concavity increase or reduce along said running shaft direction with said running shaft.

12. according to any described cross flow fan in the claim 1～11, it is characterized in that,

The axial length of said rotation of the groove of at least a portion in many said grooves that are formed at said fin suction surface is changed brokenly.

13. according to any described cross flow fan in the claim 1～11, it is characterized in that,

Make the axial length of said rotation of the groove of at least a portion in many said grooves that are formed at said fin suction surface, the peripheral direction of the said support plate in edge increases or reduces ground gradually and changes.

14. according to any described cross flow fan in the claim 1～13, it is characterized in that,

On the cross section vertical with said running shaft; Said a plurality of fin is circular-arc for roughly between all side ends in the fin outer circumferential side end of the outer circumferential side of said support plate and the fin in interior all sides of said support plate; Make groove depth groove, the central part office in said fin outer circumferential side end and the said fin between all side ends of many said concavities that are formed at said fin suction surface, bigger than the groove depth of all side ends vicinity near groove depth the said fin outer circumferential side end and the said fin.

15. an air regulator is characterized in that, this air regulator comprises:

Any described cross flow fan in the claim 1～14;

Heat exchanger, it is configured in the suction side stream that is formed by said cross flow fan, carries out heat exchange with inhaled air.