SA516371879B1 - Air-Blowing Device - Google Patents

Abstract

An air-blowing device with blade (1) includes arc-shaped site (18) that bulges out on an upstream side of blade (1) in a rotary axis direction from leading blade edge (8) to trailing blade edge (17), and blade nose (19) that is provided along leading blade edge (8). Blade nose (19) includes downstream side separation restrainer (68) which is configured to have protrusion (22) protruding on downstream surface (20) of blade (1) from leading blade edge (8) so as to form first circular arc (21) having a greater curvature compared to arc-shaped site (18), and recess (24) being formed so as to be adjacent to trailing blade edge (17) side of protrusion (22). Blade nose (19) includes upstream side separation restrainer (69) which is configured to have end (27) on upstream surface (25) of blade (1) from leading blade edge (8) so as to form second circular arc (26) having a greater curvature compared to arc-shaped site (18), and groove (28) being formed on trailing blade edge (17) side of end

Description

Air-Blowing Device Full Description

BACKGROUND OF THE INVENTION The present invention relates to an air-blowing device used in air-conditioners, ventilating fans, or the like. In related art there are air-blowing devices of this type in which the separation of the air flow is prevented and the BTM is prevented

Improving both aerodynamic and noise characteristics through a significant increase in the oda of the blade (Je) (see Patent Law Agreement No. 1). The following is a description of the blower with reference to Figure 14. As shown in Figure 14 which is a cross sectional projection of direction lg showing

0 Vane 101 of an axial flow impeller; A negative pressure lateral surface of vane 101 was provided with a rib 102 extending along the direction of the rotary—directional leading edge 103 of vane 101. The reason for rib 102 was that an opposite current flow was generated in region 104 shown in ‎ gyal) posterior to rib 102. Since the countercurrent flow continues on the surface 105 of the vane 5 101 on the anterior side in the direction of the rotary axis, the separation of the air flow from the vane 101 is unlikely; Thus, the ability of the blower and the noise control performance are improved. With (old, in view of the air inflator previously described in connection with this invention), the thickness of the part with rib 102 is considerably increased compared to the other parts. Therefore, thermal shrinkage is likely to occur during the molding process; Jilly molding is not likely to be carried out in the steady state .

Citation list Patent search Patent Law Agreement No. 1: alla Japan Patent No. 5-69400 for Untested Utility Model. General description of the invention as described above; Air blowers in related art are problematic both in improving their ability to blow air and in their ability to control and balance noise through proper molding. Hana, according to this invention; An air blower showing BLE is introduced during the molding process; Its noise control and blowing performance is not degraded; Even with the intensity of the air flow to the impeller.

gy 0 For one of the aspects of the invention, Jal ¢, the air blowing device has a fan that pushes the air (pusher) with a number of blades installed in the outer circumference of the center, and it has an electric motor that works on the rotation of the impeller and has a frame that supports the electric motor. This air-blowing device includes an arc-shaped site towards the all side of the blade upstream side of the blade in the direction of the rotary axis of the blade edge.

ed 06 1 5 preceding to the edge of the daa du (and containing the tip of the du) located along the edge of the preceding vane. The tip of the vane has a dimensional lateral separator hindrance that is designed to have a protrusion protruding on the vane surface on the preceding side in the direction of the Higa axis from the later du edge to form the first circular arc with a protrusion compared to the circular shapes Leg (oA) also A recess cavity shaped to align with the posterior edge of the protrusion . The tip of the vane contains a spacer retarder

20 dimensional profiles designed to have a projection on the surface of the previous vane in the direction of rotation of the axis from the main end to form the first circular arc with a projection compared to other circular shapes; It also has a cavity shaped to be aligned with the edge of the feather following the tip.

cling according to this invention; An air blower showing BLE is introduced during the molding process; And it does not deteriorate

noise control performance and air blowing; Even with intense airflow to the propeller.

Brief description of the graphics

Fig. 1 is a cross-sectional plan of the blower according to an illustrative embodiment of the present invention. Fig. 2 is a vane of an air blowing apparatus according to an illustrative embodiment of the present invention shown

Horizontal Viewed from the Lal side in the direction of the rotary axis.

Figure 3 is a cross sectional projection taken along line 3-3 in Figure 2.

Figure 4 is a cross-sectional projection showing the area of combined air velocity regulation that was carried out

constructed on a dimensional side of the air inflator cover” according to an illustrative embodiment of the present invention.

0 Fig. 5 is a schematic elevation showing the relationship between the preceding frill edge of the air inflator; Gy for an illustrative embodiment of the present invention; And between the longitudinal direction of the wire cover parts. Figure 16 is a vertical sectional projection in a circular direction showing schematically the air flow aug separated from the vane in the air inflator according to an illustrative model of the present invention. Figure JP is a vertical sectional projection in a circular direction showing another air flow, namely

5 1 separate from du) air blower z J gail Lad Illustration of the present invention. Figure 7 is a cross-sectional projection in the circular direction which schematically shows countercurrents of air flow originating from the distal lateral obstruction device and the anterior lateral obstruction device in the air inflator hook according to an illustrative embodiment of the present invention. Figure 8 is a vertical sectional projection in a circular direction showing schematically air flow

0 at the dimensional vane side in the direction of the axis of rotation of the blower Wg of an illustrative embodiment of the present invention.

Figure 9 is a vertical sectional projection in a circular direction showing schematically the air flow in the anterior vane side in the direction of the axis of rotation of the air inflator according to an illustrative embodiment of the present invention. Fig. 10 is an overhead projection of a single vane in an air blower Wy of an illustration of the present invention from planar view.

Fig. 11 Ble for a perspective view of the vane where the flow regulating plate is provided in the blower according to an illustrative model of the present invention. Figure 12 is a vertical sectional projection in a circular direction that schematically shows the flow of air flowing from the vane negative pressure surface direction if a flow regulating plate is provided in a blower

0 Air By an illustrative embodiment of the present invention. Figure 13 is a vertical sectional projection in a circular direction that schematically shows the vane in an air blower according to an illustrative model of the present invention. Figure 14 is a vertical cross-sectional view of the circular direction showing the thrust of the air inflator in the associated art.

5 Detailed description: Description of models (illustrative model) Lad follows » The air blowing apparatus is described according to an illustrative embodiment of the present invention with reference to Figure 1

0 Figure 1 is a schematic sectional view (uf) of an inflator. As shown from Figure 1; The 0617/06 air-blowing 90 has an impeller 3 with four blades iu; 1 fixed around hub 2 and the electric motor

an electric motor 4 is connected to the impeller 3 on the lateral side and operates to rotate the impeller 3 with the rotary axis 7 used as the axle; frame 5 additionally powers electric motor 4; For the air inflator 90, a cap 51 is attached to the frame 5 in front of the pusher 3 in the direction of the air flow. The cover 51 is fitted to the pusher 3 approach; so that the universal sleeve of the inflator 90 shrinks to be fixed to the wall; The internal projection clade has been reduced to improve the appearance of the interior 7068. The cap 51 is provided with Openingdais 52 and when the cap 51 is connected to the frame 5 air is drawn in from the outside of the inflator 90 through the hole 52. The hole 52 is also provided with a set of 0 wire segments 53 configured in parallel to divide the hole 52. Thus; It is not expected that the pusher 3 will appear directly from outside the air inflator 90) and thus the air inflator 90 will be developed. Therefore, the shape of the groin 1 of the air inflator 90 will be explained in detail through Figures (352) Figure 2 is my hometown of the groin 1 from a flat view from upstream in the direction of the rotary axis 5. FIGURE 3: A transverse view taken on longitude 433-3 cross-section obtained at the intersection of vane 1 along a line of dashed points (60-160b) in Fig. 2 aug of width to the direction of rotary axis 7 [arrow direction 64] from outside the radial direction.As shown in Fig. 2 the vane 1 has a rotary axis 7 as the center of the led and rotates in the direction 0 indicated by the arrow (65)) i.e. counterclockwise when emerging from the side Lal of the airflow.In Fig. 2 the vane end 1 is in the direction of the rotary axis 7 any contact position connected to the axis 2 is the blade rootdin ll 66. The vane 1 end in an outward circumferential direction is the Lal end 7. The The anterior side of the bit 1 in a rotating direction is the edge of the precursor 8; the end of the posterior side is the edge of the trailing blade 6096 17.

LS is shown in Figures 2 and 3; Vane 1 has an arc—shaped site 18 bulges on anterior side of vane 1 in the direction of a rotary axis from preceding vane edge 8 to subsequent vane edge 17. Vane 51806 includes upstream side of 1 tip Blade 6 is provided along the edge of the previous vane 8 within a range from the root of the vane 66 to the end of the blade 600 67. As shown in Figure 3, a lateral spacer hindrance 68 is provided on the anterior side of the vane end 19 in the direction of the axis Ofall the distal lateral separator handicap 68 is configured to have a protrusion 22 in which a circular arc 21 with a greater curve is projected compared to the arc-shaped location 8 on the side of the distal surface 20 from the preceding vane edge 8

0 and the recess recess 24 which is formed in order to be close to the side of the preceding vane edge 17 of the protrusion 22. The recess 24 is connected to the dimensional surface 20 of the position in the form of an arc 18 on the edge of the precession 17 of the protrusion 22; It is formed as a result of a point of flexion that occurs due to a difference between the bends of the circular arc 21 of the projection 22 and the arc of the site in the form of an arc A8

5 As shown in Fig. 3 a pre-side separator blocking device 69 is provided on the pre-side of the vane end 19 in the direction of the rotor. The pre-lateral separator handicap 9 is configured to have an end 27 protruding on the side of the pre-surface 25 in order to form a second circular arc 26 of greater curvature Alaa in position as an arc 18 while having a pre-vane edge 8 as a fixed point; and the groove 28 that forms on the side of the edge of the previous vane 17 from the end

0 27. and at the end 27; The second arc 26 is placed on the side of a pre-bit edge 8 and the surface 70 is placed on the side of a pre-bit edge 17. The surface 70 forms a bilge surface for the rotary axis 7 and the pre-bit edge 8 from the end of anterior side 71 to the end of a dimensional side 72 from the end 7 i.e. due to the configuration of the surface 70 the end 27 is formed in order to be located towards the prior side of the direction of the rotary axis over the surface of the dill on the prior side in the direction of the rotary axis.

in addition to; A recessed site is prepared for drilling within an outcropping 22 (prebend in the direction of the rotary axis) from the endpoint of a dimensional side 73 on the trailing vane edge side 17. The bore 28 is a space formed by the end of prebend 71; surface 70; downstream side end 72” and connection point 73.

As an example of the above configuration; In the current illustrative model; Pusher 3 diameter is set at 86 mm. The ratio of the curvatures of the first circular arc 21 and the second circular arc 26 has the same curvature with a diameter equivalent to 25 mm; The curvature of the site is set as an arc at 1:42. The protrusion 2 and the end 27 are seamlessly connected to each other at the edge of the preceding rivet 8 while the curvature of the arc is adjusted

0 the initial circular arc 21 and the second circular arc 26 at clad are 2.9 times greater than the clad located in the form of arc 8. The lower surface of cavity 28 (recessed site) is made to have a semi-circular shape; And the radius is set at 9634 from the first circular arc 21. Then, by referring to Figures 4 and 6; The following description is given on a relationship between the airflow velocity of the airflow rig in the present illustration and the vane angle. Figure 4 is a sectional projection

5 Schematic vertical showing the ranged air velocity regulation area generated on the dimensional side of the hood. Fig. 5 is a schematic top-view showing a relationship between the anterior Lal edge of the quill and the longitudinal orientation of the cover wire segments. Figure 16 is a vertical sectional projection in the rotating direction showing schematically the flow of air separated from the vane in a case where the airflow flowing into the ske is in the direction of the rotary axis. Figure 6b is a projection

0 Vertical sectional in the circular direction schematically showing an airflow that is separated from the vane in a situation where the direction of the airflow flowing into the vane is inclined in the rotary direction. and when rotating the electric motor of the impeller 3 due to the operation of the friction of the air vane 1; Air is taken into frame 5 through hole 52 of cap 51 from the outside (above in Figure 4). The air taken in is blown out (bottom in Fig. 4) through the pusher 3. Where it is

5 Provide a set of wire members 53 in slot 52 for configuration in

Parallel to each other, air is taken into frame 5 through the spaces 54 between the wire segments 53. In the AT sense the slot 52 is configured to have a set of gaps 54. Where the wire segments 53 do not allow air to flow through the slot 52 (the air velocity is The wire segments 53 on the distally side are slower than the air velocity of the gaps 54 on the distally side.Hence the distally of the cap 51 (the dashed-lined area in Fig. 4).Where the impulse 3 is provided for convergence from the cap 51 it rotates within an air velocity regulating region of a range 56. That is, in the case of rotation of the pusher 3 in the area of regulating air speed with a range of 56, it is possible to say that the cap 1 and the pusher 3 approach each other on the lateral side, and when the cap 51 and the pusher 3 0 are separated in the form of GIS from each other and in an unaffected condition in which the air speed in wire parts is 53 even on the cand side) that is, when the impeller 3 rotates in an area where the air speed is not regulated; It is not possible to say that cap 51 and pusher 3 are close together. As shown in Figure 5; A group of 53 wire segments is arranged in cover 5 in order to arrange them in parallel with each other. In contrast; Vane 1 rotates counterclockwise while rotary shaft 7 serves as the pivot. Thus, the angle 0 is formed by the preceding Lal edge 8 of the rhapsody 1 associated with the longitudinal direction of the wire part 53 and can be set in a range from zero to 90 degrees. And here is a case where the angle 0 is small; The entire preceding Lal edge band 8 from vane root 66 to vane end 67 passes through the high air velocity region or the low air velocity 0 region in the wind-velocity regulating region 6 at the same time. On the other hand” in the case of Led angle 0 is large; A certain part of the former vane edge passes through the low air velocity region (alg) the remaining part through the high air velocity region.

— 1 0 — here in the case of passing through a high air velocity zone; As shown in Figure 6 in an air velocity component of airflow; Component 80 off the dimensional side in the rotary direction becomes larger than the rotary—directional component 81. The flow angle of the airflow in this case is referred to as the downward angle of the vane. in the case of passing through a low air velocity area; As shown in Figure B in the air velocity component of the air flow »; Component 82 off the dimensional side in the rotary direction becomes smaller than the rotary—directional component 83. The flow angle of the airflow in this case is referred to as the Hall angle of 0 associated with the vane. The combination of airflow states associated with vane 1 is mixed due to the presence of angle 0

C6516 flow angle in Fig. 6a; and in Figure 6b; And within a range between them in the two forms Jie (middle angle). That is, based on the shape of cap 51; at a certain point; The angle at which the air flows to the vane 1 and the vane angle 5 coincide with each other and the airflow from the vane 1 is not separated. However; Where the angles are not in harmony with each other most of the time; Air separation occurs. And thus, in the event of a deflection of the direction of the air flow flowing to the fringe 1; It is very difficult to synchronize the airflow angle of an airflow and the vane angle 1 with each other in order to prevent the airflow from being separated from the vane 1. The airflow from the vane 1 is separated due to this disturbance of the two angles. Separation of air flow degrades air blowing performance Pg degrades noise control performance. Thus it is necessary to separate the air flow to obstruct it. in Figure 6; In order to make an easy-to-understand description, the edge of the graffiti 1 has been shown to have a linear form. But the shape of the vane 1 used in the current illustration is the one shown in Figure 3.

— 1 1 —

Thus, with reference to Figures 7 9 the operation of the bit tip 9 1 will be described in detail. Figure 7 is a vertical sectional projection in the direction of rotation that schematically shows the eddy air flows generated in the downstream side separation restrainer 68 and the upstream side restrainer.

separation restrainer 5 69. Figure 8 is a vertical sectional projection in the direction of rotation which schematically shows an airflow flowing at the distal side of the flap 1 in the direction of a rotary axis. Figure 9 is a vertical sectional projection in the direction of rotation showing schematically an airflow flowing in the anterior side of vane 1 in the direction of the rotating axis. As shown in Figure 7; In the illustration of the invention, the tip of the quill 19 is included in the quill

[0 1] a lateral lateral spacer obstruction device 68 and a lower lateral spacer obstruction device 69. When the air flow passes through the bore 24 in a lateral lateral spacer obstruction device 68; The vortex 32 air flow is generated due to the hollow shape of the cavity 24. In addition to the above; When the air flow passes through the bore 28 of the dimensional lateral blocking device 69; The airflow vortex 35 is generated by the recess of groove 28.

5 In the event of a disturbance between the direction of air flow from vane 1 and the vane angle 1; The air flow separated from the vane 1 can be bent along the orientation of rotation of the eddy 32 in the airflow and eddy 35 in the air flow; It is possible to direct the direction of the surface of the ribbed, causing the vortex 32 in the air flow and the vortex 35 in the air flow. That is, the separation of air flow from vane 1 can be obstructed.

0 Since eddies are generated sequentially on both the anterior and posterior side of the vane el, the direction of the airflow flowing into the vane 1 can match even if the direction is deviated by any inclination in the direction of the rotary axis (as in Figure 6a). ; and the inclination in the direction of rotation (as in Fig. 6b) of pusher 3.

That is, in the medial lateral distal interval disability 68; As shown in Figure 8; A recess is provided in order to approximate the side of the former vane edge 17 in the protrusion 22. lly in the flow of air flowing through the protrusion 22; The airflow direction is bent in the direction of the dimensional surface 20 of the vane 1 due to the abrupt widening of the flow channel in the cavity 24; The vortex 32 is created for the air flow in the cavity 24.

The vortex 32 in the airflow is a clockwise rotating vortex when viewed from the vane end side (front side direction in Fig. 8). And if the air flow to the vane 1 is inclined in the direction of the fall axis in the impeller 3; The direction of the air flow that tends to separate from the vane tip 9 in the quill 1 is bent towards the direction in the direction of rotation of the vortex 32 of the air flow due to its viscosity

0 air. The air flow adheres to the dimensional surface 20 of the vane 1 and flows along the dimensional surface 20. In the pre-lateral separator obstruction medium 69; As shown in Figure 9; A bore 28 is provided in order for the side of the trailing vane edge 17 to approximate at the end 27. Thus in the air flow passing through the end 27 the direction of the air flow is bent in the direction of the anterior surface 25 of the vane 1

5 due to a sudden widening of the flow channel in the bore 28; The vortex 35 of the airflow is formed in the cavity 28. The vortex 35 of the airflow is a vortex that rotates counterclockwise when viewed from the end side of the flap (front side direction in Fig. 9). and in Alla the inclination of the air flow to the vane 1 in the direction of the rotating axis in the impeller 3; It bends the direction of the air flow that it tends to separate from

0 The tip of the vane 19 in the vane 1 towards the direction in the direction of rotation of the vortex 35 of the air flow due to the viscosity of air. The airflow adheres to the upstream surface 25 of patch 1 and flows along the upstream surface 25.

— 1 3 —

And this way; By including a 68 dimensional lateral comma blocker and a 68 dimensional spacer blocker

tribal side 69; It is possible to provide an air inflator in which the separation of the air flow from the vane 1 is obstructed

Noise control performance and air blowing performance are not degraded.

The distal lateral interval handicap method 69 and the pre lateral lateral interval handicap method 68 consist of:

By combining the desired shapes (lie) i.e. cavities such as cavity 24” and cavity 28” and protrusions

27. and the end 22 protrusion Jie

Thus, the terminal of Lil 19 and the position in the form of arc 18 have the same shammak. No side is displayed

The edge of the anterior vane 8 and the end 27 protruding towards the anterior side and the cavity 28 hollow towards the side

dimensional on the side of the edge of the previous quill 17; protrusion 22 protruding distal to the recess 0 28; And the cavity 24 which is hollow towards the tribal side in the side of the edge of the previous feather in projection 22

Respectively. Thus, the tip of the quill 19 can be configured to have the same shape as the location in the form of an arc

18

In this way; Where there is no need to provide an in snuff in order to obstruct the separation of the air flow; from

It is possible to prevent deformation due to heat shrinkage during molding and to improve the stability of the mold. Ribshah 1 has a 5 curved shape due to the location in the form of an arc 18) and the projection 22 protruding into the first circular arch 21;

And the end 27 protruding in the second circular arc 26. Where the vane 1 of this curved shape is connected

by axis 2; The area of the feather root part 2 attached to the axis 2 increases; And the strength of communication is strong.

Thus, the clearance of this distortion can be improved.

The end 27 is made towards the anterior side in the direction of the rotary axis above the surface of Lan) on the posterior side in the direction of the rotary axis 0

And this way; When it enters the cavity 8 of the terminal tangent 27 associated with the flow, the air flows into the

the end 27 before the cavity 28. and when the air flows directly into the cavity 28; Air cannot flow

from cavity 28 to dimensional surface 20; Thus, the resistance to flow increases. But by causing

Airflow into cavity 28 in advance; air can flow more easily to the after surface

0 along the end 27 and protrusion 22. Air can flow along the lateral surface 20 by operation of the lateral lateral separator obstruction device 68; Thus an increase in flow resistance can be prevented. Modification Example: In an example modification of an illustrative embodiment of the present invention; The same bookmarks will be applied to the same configuration elements of the current demo. its detailed description will be erased; Only the various points will be explained. Figure 10 is an overhead projection of the [Lan] Gy air inflator of an example modification of the present invention in horizontal view. As shown in Figure 10, the grating TT can be configured to have an inner circumference (dd) 12 and an outer vane circumference 16. At the edge of the previous grating 8 in the inner vane circumference 12; The contact line direction (arrow 9) of vane edge 8 is of greater horizontal width in the directional diagonal component 0 11 than in the contact line direction of vane edge 8 associated with the component. and in the edge of the previous vane 8 in the vane [AT] outer circumference of the vane 16; The direction of the seam (arrow 13) of the pre-pat edge 8 in horizontal width is greater in the directional fall component 15 than in the directional sal component 14 in the direction of the seam of the pre-vane edge 8 associated with the component. The anterior 69 and the dimensional lateral 5 interfering handicap 68 only in the inner circumference of ddl 12. In the badminton methods 19 shown in Figures 2 and 3, the surface area Cus increases, the protrusion 22 and the end 27 are formed, and the resistance against the flow increases. The outer 16 is larger than that of the inner circumference 12; the effect of increasing the resistance becomes large. But in the dlls setting up the modification example shown in Fig. 10, where the protrusion 22 and the end 27 are provided in the vane 0 inner circumference 12 a the increase in resistance against flow can be prevented In addition to the above, the pre lateral spacer handicap device 69 and the post lateral spacer handicap device 68 can be included in the inner grating circumference 12 dad and a connection gia 77 can be configured between the inner grating circumference 12 and the outer girth 16 to set it as an endpoint to gradually finish the circumference Inner quilting 12 L The perimeter of the outer flap 16.

And this configuration; It is possible to reduce the sudden change in the shape of the vane tip 19 from the inner vane circumference 12 to the outer vane circumference 16. Thus, the separation of air flow due to the sudden change in shape can be resisted. As shown in Figure 11; Flow regulating plates 36 can be provided for cavity division 28. As shown on the particular day in Figure 12; Provide a set of flow-regulating plates 36 each having the same curvature as that of the second circular arc 26 at the vane end 9 and configured to have a semi-circular plate shape; towards the radial direction of the pusher 3 along along grooves 28. In this way; Air flows through the upstream surface all 25 adhering to the 0 flow regulation plates 36. As a result; In the event that the direction of the air flow flowing into the quill 1 is inclined in the direction of rotation; In addition to operate the vortex separation 35 obstruction of airflow; Air flows while adhering to the flow regulator plates 36 due to the Coanda effect 608008 . And therefore"; Separation of air flow can be further hampered. As shown in Figure 13; At the end 127 the second circular arc may be placed on the side 5 of the edge of the previous rhombus 8; Deck 170 may be placed on the edge side of a trailing subtraction 17. Deck 170 forms a surface that is inclined from the end of the anterior side 71 to the end of the postlateral side 72 of the end 127 on the side of the edge of the precursor 8 from the direction of the rotary axis. The end of the anterior side 171 is circular in shape with greater curvature than the second circular arc 26; A recessed site for drilling shall be placed within the projection 22 from the end of the lateral side 72a. The recessed site is connected to the prior surface at connection point 73 on the side of the trailing vane 17. The cavity 8 is a space formed by the end of the preside 71, the surface 170, the end of the distal side 72, and the connection point 73. In this way; A vortex 135 airflow is generated on the side of the preceding flap 8 additional edge. The direction of the air flow tending to separate from the fringe tip 19 is curved due to the vortex 135

For the air flow and the adhesion of the air flow to the prefabricated surface 25. Ag this case; whereby a vortex 35 of air flow is generated on the side of the edge of the preceding additional 8; The airflow can be bent at an initial stage of separation from the Lill end 19. Where the airflow can be bent in the ddl stage the separation of the airflow from the fringe 1 can be further hampered.

in an air blower; When the air flows into the vane at an angle different from the other angles of the rotary axis, the dimensional lateral separator retarding device can generate a vortex in the bore through the protrusion and bore; The airflow generated in the case of airflow into the vane at an angle inclined in the direction of the rotor can be impeded from separating from the surface of the vane on the distal side in the direction of the vane during rotation of the vane. In addition to the above; Can generate disability means

0 dimensional lateral separator spiral in the bore through the end and bore; The resulting airflow in dlls in which air flows into the vane at an angle inclined in the direction of rotation may be hindered from separating from the surface of the vane on the anterior side in the direction of the rotary axis during the rotation of the vane. In this way; An airflow vortex can be generated in the cavity by the protrusion and cavity. It can also generate airflow vortex in the cavity through the end and the cavity. And therefore; Even in the case of flow

5 Air to vane at a different angle than other angles associated with the hall axis Separation of air flow can be hindered. That is, even in Ala the air flows into the vane while it is inclined in the direction of the axis lA) and in the case of the air flow into the vane and its inclination in the direction of rotation, the direction of the air flow that Char to separate from the vane can be bent along the direction of rotation of the vortex so that Air flow separation is not likely to occur. Thus the loss of airflow and noise can be reduced.

0 The air inflator may also include the overlay cover on the front side of the pusher for approach to the pusher; And it has an opening to which air is drawn from the outside, and it has a set of wire parts that divide the opening and are placed parallel to each other. In this way; and where the overall slimness can be reduced; The blower can be mounted on a wall or the internal overhang can be reduced by clad. The sag can be hidden to improve the shape.

— 7 1 — in the inflator; The vane can be configured to have an inner rake circumference in which the direction of the contact line of the previous vane edge is in a greater horizontal width in the directional diagonal component than in the rotating component f in a direction, and the outer vane circumference in which the contact line direction of the previous vane edge is in a greater horizontal width in the directional rotating universe than in the diagonal rotating component. The distal lateral spacer blocker and the pre-lateral spacer blocker can be provided at the inner circumference of the shuttle only. at the tip of the feather; increase the surface area where a bulge and an end are formed; Resistance increases against flow. And where the speed of the outer fringe circumference is greater than that of the inner circumference, the effect of increasing the resistance becomes aS, but according to the above configuration; Where the protrusion and the end are provided in the inner circumference of the grating 0 had, the increase in resistance against flow can be prevented. in an air blower; The end can be positioned towards the tribal side of the impeller in the direction of the rotary axis above the surface of the bit on the tribal side in the direction of the rotary axis. In Ala there is a turbulent flow of air at an angle inclined in the direction of the axis of rotation of the pusher, the end is used as a wall at the width of the cavity; And the cavity enters the end tangent associated with the flux. July 5 Air flows to the end before hollowing out. That is, when the air flows directly into the cavity; Air cannot flow from the cavity to the surface on the dimensional side; Thus, the resistance to flow increases. However; By creating an airflow to the end in advance; Air can flow on the surface on the dimension side along the end and protrusion. And therefore; ade can increase the resistance associated with the flow. 0 in the inflator; The bit may be fitted with a set of flow-regulating plates, each of which has the same curvature as that of the second circular arc and is configured to have a circular 'And' plate and to divide the bore.

In this way; In addition to the actuation of the separation impediment caused by the vortex generated in the cavity; Air flows while adhering to the flow regulating plates due to the Coanda effect; Thus separation of air flow can be prevented. Industrial Application The air blower dg of the present invention is intended to be used as an air blower for ventilation of spaces

interior; Which requires the ability to blow air in addition to calm. Reference marks in drawings 1 « A 101 Feather 2 Axis

0 3 impeller 4 electric motor 5 tire 7 spindle 8 pre-fabric

5 9 ¢ 13 64; d0arrow 0 15« 80; 53 ls directional components 1 diagonal rotary component 2 inner riveting circumference 6 outer riveting circumference

0 7 1 edge dd, suffix

8 arc-shaped position 9 frill end 0 dimensional surface 1 first circular arc 22 protrusions

4 cavity 5 prebend 6 second circular arc 27 127 end

28 128 cavity 2 35 135 airflow vortices 6 flow regulating plate 1 cover 2 holes

Sea 53 5 4 Gap 6 Zone Range Air Speed Regulation 6 Root 7 Lill End

68 Distal Lateral Interval Handicap Means 9 Premedial Lateral Separator Handicap Means 0 Surfaces 1 71 Pre-Side End

72:72 Dimensional side end 3-point connection 0.82 components in the direction of the dimensional side in the direction of the rotary axis 0 Air inflator 2 rib

0 103 Directional Rotary Pre-Edge 4 Zone 5 Surface 6 Airflow.

Claims (1)

Protection Elements 1- An air-blowing device (90) with an impeller fan (3) with a number of blades (1) installed on the outer perimeter of the center (2); Electric motor (4) Rotating impeller (3) with frame (5) Supporting electric motor (4); air-blowing device included (90) : located in an arc (18) jutting outwards on the upstream side of the blade (1) in the direction of a rotary axis (8) from the blade edge (8) to the edge of dd A posteriori (17) in the vane (1); and a blade nose (19) provided along the edge of the preceding vane (8); wherein the vane tip (19) includes a downstream side separation means restrainer | 0 (68) configured to have a protrusion (22) on the surface of (20) vanes (1) on the lateral side in the direction of the rotary axis from the edge of the preceding vane (8) to form an 8:6 circular arc The first (21) has a greater curvature compared to the arc-shaped position (18); and the recess (24) is formed to adjoin C Bend the edge of the subsequent flap (17) in the projection 00 m (22)”; Upstream side separation restrainer | 5 (69) Wigs are made to have an end (27) on the surface of (25) the vane (1) on the anterior side in the direction of the rotating axis from the edge of the previous wig (8) to form a second circular arc (26) for it greater curvature compared to the arc-shaped position (18); and a recess cavity (28) formed on the side of the trailing vane edge (18) at the end (27). 0 2- air-blowing device (90) according to For protection element 1, where air flows into the strut (1) at an angle different from other angles relative to the rotary axis and downstream side separation restrainer Ag (68) downstream side separation restrainer recess (24) through protrusion (22) and void (24)” and impede the resulting airflow in case of air flow into the vane (1) at an angle inclined in the direction of the rotary axis 5 to separate from the surface (20) of the vane (1) on the lateral side in the direction of Axle fall during rotation badminton (1); And an upstream side separation restrainer (69) generates a vortex in the recess cavity (28) through the end (27) and the cavity (28); The resulting air flow into the cavity where it flows into the shim (1) at an inclined angle in the direction of an axis Rotation from separation from the surface (25) of the blade (1) on the anterior side in the direction of the rotating axis during the rotation of the blade (1). 3- air-blowing device (90) of claim 1; which also consists from: A cover (51) is provided on the front side of the impeller (3) in order to approach 0 impeller (3); And that it has an opening (52) to which air is drawn from the outside” and de gana is made of wire members (53) that divide the opening (52) and are placed in parallel with 4- an air-blowing device ) 90) pursuant to claim 1; 5 Where it is possible to ruffle (1) to have an inner blade periphery (12) in which the direction of the line of contact with the edge of the previous ruffle (8) is in a greater horizontal width in the directional diagonal component than in the directional rotating component, and the outer periphery of the blade is outer blade periphery (16) in which the direction of the contact line of the preceding frill edge (8) is of greater horizontal width in the rotary—directional entropy than in the radial— Directional 0 and Cus upstream side separation means are provided downstream side separation (69)restrainer only. (12) inner blade periphery (08) restrainer 5- Gig (90) air-blowing device for claim 1; Where the end (27) is made towards the impellerdadiall (3) in the direction of the rotary axis above the surface (25) of the vane on the distal side in the direction of the rotary axis direction. (6) an air-blowing device of claim 1; In the @ir-blowing device, the blade nose (19) can be provided with a set of flow regulating plates (36), each of which has the same curvature of the second circular arc and is configured to be It has the shape of a semi-circular plate 6 and to divide the cavity recess (28). — 2 4 — ps or ue 0 vo]. 1 0 m º Fy N 1 3 3 J ' 4 RR SR. SS 0 0 SE NWA VNB NNENNE NR > z 0 m 8 z %) bE Ne, Re, TR \ 1 1 b mg foc hd tj Ron qa a a a Nem, 3 / \ gp Ear . 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