JP5125565B2 - Cross flow fan connecting components, cross flow fan, air conditioner indoor unit - Google Patents

Description

  The present invention relates to a connecting component of a cross flow fan used as a blower, a cross flow fan using the same, and an indoor unit of an air conditioner using the cross flow fan.

  The connecting member of the conventional cross flow fan is provided with a plurality of blades protruding in a cylindrical shape at a predetermined unequal pitch on one surface side of the plate-like support member. A welding groove is provided on the surface opposite to the surface on which the blade protrudes, at an equal pitch that is the same as the blade, and a tapered protruding ring in contact with the inner peripheral side of the wall surface of the welding groove Is provided.

  And the blade | wing front end surface of another connection structural member is welded to the welding groove | channel of a connection structural member, and connection structural members are connected in series and a crossflow fan is comprised. When welding, even if the tip of the blade contracts in the inner diameter direction due to distortion generated during the formation of the connecting component, the tip of the blade is guided by the taper-shaped projecting ring and expanded in the outer diameter direction. It is designed to be inserted into the welding groove. (For example, refer to Patent Document 1.)

Japanese Utility Model Laid-Open 5-17198 (columns 0010 to 0012, FIGS. 1 to 3)

In the conventional connecting component of the cross flow fan in which a tapered protruding ring is provided in contact with the inner peripheral surface of the wall surface of the welding groove, the connecting component in which the tip end of the blade contracts in the inner diameter direction due to distortion generated during molding is used. When connecting the blade tip to the welding groove to connect to another connecting component, the inner circumferential side of the wall surface of the welding groove that is perpendicular to the bottom surface of the welding groove and the tapered protruding ring Because catching occurs at the corner where the
(1) The corners of the blades and the protruding ring are lost, and abnormal noise is generated during blowing or noise is increased.
(2) The insertion efficiency of the blade into the welding groove is deteriorated, and the work efficiency of the operation of connecting the connecting components is reduced.
(3) A manufacturing defect that the worker who assembles the cross flow fan welds the blade without inserting the blade to the regular welding position of the welding groove is likely to occur.
There was a problem.

  Further, in order to smoothly insert the blade into the welding groove without being caught at the corner where the welding groove wall surface and the protruding ring are in contact with each other, the tapered surface of the protruding ring is made as close as possible to the plane of the plate-like support member. That is, the inclination angle with respect to the plane of the plate-like support member of the protruding ring may be as large as possible. However, in order to guide the tip of the blade contracted in the inner diameter direction to the welding groove along the taper surface of the protruding ring, it is necessary to make the inner diameter of the upper end of the taper surface of the protruding ring smaller than the inner diameter of the contracted blade. In the projecting ring with the taper surface having a larger inclination angle, the height of the projecting ring has to be made higher in order to make the inner diameter of the upper end of the taper surface of the projecting ring smaller than the inner diameter of the contracted blade. Therefore, since a part of the air passage is blocked by the projecting ring having a high height, the air blowing area of the blades after connecting the connecting components is reduced, and the air flow rate of the cross flow fan is reduced. there were.

  The present invention has been made to solve the above-described problems, and its purpose is to prevent blades from being caught when connecting a connection component to another connection component without deteriorating the air blowing performance. The cross-flow fan can be smoothly inserted into the welding groove and the cross-flow fan can be smoothly inserted and the cross-flow fan can be obtained with low noise and large air flow. Another object of the present invention is to obtain a low-noise air conditioner that does not generate an abnormal sound by using the cross flow fan without reducing the air flow rate by using the cross follow fan.

The cross-flow fan connecting component according to the present invention includes a plurality of blades protruding at a predetermined unequal pitch in the circumferential direction on one side of an annular plate-shaped support member, and the blades of the plate-shaped support member. The bottom surface is provided on the surface opposite to the surface provided at a predetermined unequal pitch in the circumferential direction, has a bottom surface similar to the cross-sectional shape of the blade, and the opening is larger than the bottom surface. Provided on the surface on which the welding groove of the plate-like support member is formed, and the lower end is in contact with the upper end on the inner peripheral side of the calling wall and the plate shape inclined toward the center of the support member has on the outer circumferential inclined surface of welding groove or in guide the tip of the blade, the radial width a equal to or larger than 25% of the radial width E of the plate-like support member And an annular projecting ring.

The connecting component of the crossflow fan according to the present invention smoothly inserts the blade into the welding groove with a smaller force than the conventional one without the tip of the blade being caught at the corner portion where the wall surface of the welding groove and the protruding ring are in contact with each other. It becomes possible. for that reason,
(1) There is no loss of the connecting components, and no abnormal noise is generated or noise is increased when the cross flow fan is blown.
(2) The workability of the assembly of the crossflow fan assembled by connecting the connecting components is improved, and the assembly work time can be shortened.
(3) It is possible to prevent production defects due to the blade not being inserted up to the regular welding position of the welding groove.
The effect that can be obtained.

  In addition, since the blade can be smoothly inserted into the welding groove without the tip of the blade being caught while suppressing the height of the protruding ring, it is possible to suppress a decrease in the blowing area of the blade due to the protruding ring. Therefore, the air flow of the cross flow fan can be made larger than that of the conventional one, and there is an effect that a cross flow fan having excellent air blowing performance can be obtained.

Embodiment 1 FIG.
1 and 2 are perspective views of a connecting component 2 that is one of the components of the cross flow fan 1, FIG. 3 is a partial cross-sectional view around the welding groove 4 of the connecting component 2, and FIG. FIG. 5 is a partial cross-sectional view showing a state in the middle of inserting the blade 3 of another connection component 2 into the welding groove 4 of the connection component 2 in the assembly of FIG. 4 is a partial cross-sectional view showing a state in which the blade 3 of another connecting component 2 has been inserted. FIG. 6 is one of the components of the cross flow fan 1 and is installed at one end of the cross flow fan 1. 7 is a perspective view of the end plate member 100, FIG. 7 is one of the constituent members of the cross flow fan 1, and a sectional view of the end constituent member 200 installed at the other end of the cross flow fan 1. FIG. FIG. 9 is a perspective view of the cross flow fan 1 It shows a.

  The connecting component 2 shown in FIGS. 1 and 2 is a member that forms the cross flow fan 1 by connecting at least a plurality of components in series as shown in FIGS. 8 and 9. One. As shown in FIG. 1, the connecting component member 2 has an annular plate-like support member 8, and a plurality of blades 3 surround one surface side (the lower side in FIG. 1) of the plate-like support member 8. It is formed to protrude in a cylindrical shape in a predetermined unequal pitch state in the direction.

  FIG. 2 is a perspective view of the connecting component 2 viewed from the direction of the tip of the blade 3, but the end surface 3 a of the blade 3, which is a free end on the side opposite to the plate-like support member 8, Although not shown, a welding allowance is provided at the time of welding when the blade 3 is connected to another connecting component 2 by welding, and the end surface 3a of the blade 3 serves as a welding surface.

  A plurality of welding grooves 4 having a bottom surface 4a having a shape similar to or slightly larger than the cross-sectional shape of the blade 3 are formed on the surface of the plate-like support member 8 opposite to the surface on which the blade 3 projects. The pitch is the same as the pitch of the blades 3, but the phase of the blades 3 is shifted by 2 to 8 degrees. Then, around the bottom surface 4 a of the welding groove 4, in order to guide the blade 3 of another connecting component member connected in series when the connecting component members 2 are connected to each other to the fixed position of the corresponding welding groove 4, the inclination of the angle α An incoming wall surface 5 which is an angle is provided.

  Here, the inclination angle α is an angle formed by the plane of the plate-like support member 8 and the calling wall surface 5 as shown in FIG. 3, and is an angle of 75 to 85 degrees. The welding groove 4 has a calling wall surface 5 having an inclination angle α on the entire circumference of the surrounding wall surface. The calling wall surface 5 has an inclination angle in a direction in which the shape of the opening of the welding groove 4 is larger than the shape of the bottom surface 4a. It is inclined at α. In other words, the opening wall area of the welding groove 4 is larger than the area of the bottom surface 4 a due to the calling wall surface 5.

  The welding groove 4 has a function of positioning the blade 3 so that the blade 3 of another connecting component 2 connected in series is welded at a correct position when the connecting component 2 is connected to manufacture the cross flow fan 1. Have. By setting the inclination angle α of the incoming wall surface 5 to 75 degrees or more and 85 degrees or less, the restoring force of the blade 3 that the blade 3 inserted into the welding groove 4 for connection tends to contract in the inner diameter direction before welding is connected. Even if it is going to come off from the welding groove 4, the angle of the incoming wall surface 5 is large and the blade 3 does not get over and the incoming wall surface 5 is caught by the incoming wall surface 5 so that it does not move. The deviation from 4 can be prevented.

  Moreover, when the assembly operator of the crossflow fan 1 connects before connecting the connection component members 2 to each other, that is, when the blades 3 of the connection component members 2 are inserted into the welding grooves 4 of the other connection component members 2 in series. Further, by setting the inclination angle α of the incoming wall surface 5 to 75 degrees or more and 85 degrees or less, the operator can feel the response that the blade 3 slides on the incoming wall surface 5 and falls to the welding groove bottom surface 4a. It can be recognized that the welding groove 4 can be inserted to the bottom surface. Therefore, it is possible to prevent the occurrence of defective manufacturing due to defective welding due to the blade 3 not being set at an accurate welding position, that is, being not correctly inserted into the fixed position of the welding groove 4 or an incorrect position.

  On the surface of the plate-like support member 8 on the side where the welding groove 4 is formed, the inner peripheral side of the welding groove 4 is in contact with the inner peripheral side of the calling wall surface 5 of the welding groove 4, and the plate-like support member 8. An annular projecting ring 6 having an inclined surface 7 with an inclination angle β inclined toward the inner diameter center direction is provided integrally with the plate-like support member 8. The lower end portion of the inclined surface 7 is in contact with the inner peripheral side upper end portion of the incoming wall surface 5 of the welding groove 4. Here, the inclination angle β is an angle formed by the plane of the plate-like support member 8 and the inclined surface 7 of the protruding ring 6 as shown in FIG. The inclined surface 7 expands the tip end portion of the blade 3 contracted in the inner diameter direction due to deformation generated during molding when the operator tries to insert the blade 3 into the corresponding welding groove 4 of another connecting component 2. In this way, the welding groove 4 is guided.

  The plate-like support member 8, the blade 3, the welding groove 4, and the protruding ring 6, which are components of the connecting component 2, are integrally formed by resin molding. The support member 8 is recessed toward the projecting side of the blade 3, that is, the plate-like support member 8 is deformed so as to bend in the standing direction of the blade 3 as it proceeds radially outward. Due to the deformation at the time of forming the plate-like support member 8, the tip of the blade 3 contracts in the inner diameter direction.

  Therefore, if the deformation at the time of molding of the plate-like support member 8 can be reduced, the amount of contraction in the inner diameter direction of the tip portion of the blade 3 can also be reduced. Increasing the rigidity of the plate-like support member 8 is effective for reducing deformation during the molding of the plate-like support member 8. Therefore, the rigidity of the plate-like support member 8 can be increased if the plate-like support member 8 is not an annular shape but is constituted by a simple disk having no inner periphery. However, when the plate-like support member 8 is changed from an annular shape to a solid disc in this way, the weight of the plate-like support member 8 is greatly increased.

  As shown in FIG. 8, the cross flow fan 1 is usually configured to be long in the longitudinal direction, that is, in the connecting direction of the connecting component 2, and when mounted in an indoor unit of an air conditioner, It arrange | positions so that the longitudinal direction may become horizontal, and is rotatably supported by the both ends of a longitudinal direction. When the weight of the plate-like support member 8 is greatly increased in the cross flow fan 1 arranged and supported in this manner, the cross flow fan 1 is deformed such that the center is bent in the direction of gravity with both ends as fulcrums. If it bends like that, the cross flow fan 1 will be rotationally driven in a bent state, and abnormal vibrations and abnormal noise will be generated by the whirling.

  Therefore, a method for increasing the rigidity of the plate-like support member 8 by making it a solid disk is that the cross flow fan 1 is arranged so that its longitudinal direction is parallel to the gravity direction, that is, vertically or horizontally. Even if the cross flow fan 1 is disposed in a distance, it is effective when the distance in the longitudinal direction of the cross flow fan 1 is short. However, it is effective only when the arrangement and configuration are specified in this way.

  In view of this, the connecting component 2 in this embodiment is designed to increase the rigidity of the plate-like support member 8 without increasing the weight so as to suppress the contraction of the tip of the blade 3 in the inner diameter direction. As a means, the height b of the protruding ring 4 and the plate from the center of the inner diameter of the plate-shaped supporting member 8 and the protruding ring 6, that is, near the center of the connecting component 2, on the inner periphery of the plate-shaped supporting member 8 and the protruding ring 6. A plurality of beams 9 having a height equal to or smaller than a height (b + h) obtained by adding the heights h of the cylindrical support members 8 are provided radially. The beam 9 may be provided so that it may be located in the inner peripheral part of both the plate-shaped support member 8 and the protrusion ring 6, or may be provided so that it may be located only in any one inner peripheral part.

  Here, as shown in FIG. 3, the height b of the protruding ring 6 is the distance from the upper end surface of the plate-like support member 8 (the surface on which the welding groove 4 is formed) to the upper end surface of the protruding ring 6, The height h of the plate-like support member 8 is the distance between the upper end surface and the lower end surface of the plate-like support member 8 (the surface on which the blades 3 project). At least three beams 9 are necessary. The plurality of beams 9 are coupled in the vicinity of the center of the inner diameter of the plate-like support member 8, and extend radially therefrom, and the tip (outer side) of each beam 9 is on the inner peripheral surface of the plate-like support member 8 or the protruding ring 6. Join. The beam 9 is also integrally formed with other components by resin molding as a component of the connecting component 2. The beam 9 can greatly increase the rigidity of the plate-like support member 8.

  As a second means, the rigidity of the plate-like support member 8 is enhanced by using a protruding ring 6 having an inclined surface 7 that extends the tip of the blade 3 to the welding groove 4. Here, the dimension E shown in FIG. 3 is the radial width of the annular shape of the annular plate-shaped support member 8, and if the outer diameter φDo and the inner diameter φDi (both diameters) of the plate-shaped support member 8 are used, E = (Do-Di) / 2. 3 is a radial width of the annular projecting ring 6, and the outermost periphery of the projecting ring 6 from the inner periphery of the projecting ring 6, that is, the inclined surface 7 is in contact with the calling wall surface 5 of the welding groove 4. The horizontal distance to the position. The inner diameters of the plate-like support member 8 and the protruding ring 6 are both equal to φDi.

  In this connecting component 2, the width a of the protruding ring 6 having a predetermined height b (b> 0) is at least twice as large as the height h of the plate-like support member 8, and the width of the plate-like support member 8. It is provided to be 25% or more of E. That is, the rigidity of the plate-like support member 8 is increased by increasing the width of the protruding ring 6. Although the rigidity can be increased even if the height b is increased, the height of the protruding ring 6 blocks the air passage and reduces the air blowing area of the blade 3. The height b of 6 is kept as low as possible.

  Since the rigidity of the plate-like support member 8 is increased by forming the beam 9 and setting the width “a” of the protruding ring 6 to 25% or more of the width E of the plate-like support member 8, The width E of the support member 8 can be reduced to 25% or less with respect to the outer diameter φDo of the plate-like support member 8, and the high rigidity of the plate-like support member 8 is suppressed by suppressing an increase in the weight of the plate-like support member 8. Can be achieved. As a result, deformation that sags when the plate-like support member 8 is resin-molded can be suppressed, and the amount of contraction in the inner diameter direction of the tip of the blade 3 due to the sag of the plate-like support member 8 is reduced. be able to.

  The inclination angle β of the inclined surface 7 of the protruding ring 6 is such that the height b of the protruding ring 6 is made as low as possible, and the blowing area of the blade 3 of the cross flow fan 1 that has been assembled, that is, the longitudinal air passage by the blade 3 The tip of the blade 3 that has been guided by the inclined surface 7 and slid on the inclined surface 7 at the corner where the calling wall surface 5 of the welding groove 4 and the inclined surface 7 of the protruding ring 6 contact each other so that the width is as large as possible. It is necessary to set the angle so that the blade 3 can be smoothly inserted into the welding groove 4 without being caught.

  FIG. 10 is a schematic diagram for explaining an obtuse angle λ formed by the calling wall surface 5 and the inclined surface 7 at a corner portion where the calling wall surface 5 on the inner peripheral side of the welding groove 4 and the inclined surface 7 of the protruding ring 6 are in contact with each other. FIG. As shown in FIG. 10, the obtuse angle λ is an angle that travels counterclockwise from the calling wall surface 5 to the inclined surface 7 around the point where the calling wall surface 5 and the inclined surface 7 are in contact with each other. As the obtuse angle λ is smaller, the tip of the blade 3 is more easily caught.

  If the height b of the protruding ring 6 is constant, the lower the inclination angle β of the inclined surface 7, the more the upper end of the inclined surface 7 is located on the inner side, that is, the direction closer to the inner diameter center of the plate-like support member 8. become. The tip of the blade 3 contracts in the inner diameter direction, that is, in the radial direction, toward the center of the plate-like support member 8, but if it contracts further inward than the position of the upper end of the inclined surface 7, the inclined surface 7 Cannot slide into the welding groove 4 by sliding the tip of the blade 3. Therefore, the smaller the inclination angle β, the more the upper end of the inclined surface 7 is located on the inner side, so that the reliability of guiding the tip of the contracted blade 3 increases.

  However, the obtuse angle λ is obtained by λ = 180 degrees− (α−β). If the tilt angle α is constant, the smaller the tilt angle β, the smaller the obtuse angle λ. At the corner where 7 contacts, the tip of the blade 3 that has slid on the inclined surface 7 is likely to be caught. The inclination angle α of the incoming wall surface 5 of the welding groove 4 is 75 ° to 85 ° so that the operator can feel the completion of the insertion of the blade 3 as described above or prevent the blade 3 from being detached after the insertion. Is set to degrees.

  In the connecting component 2 of the present embodiment, since the incoming wall surface 5 has an inclination angle α of 75 to 85 degrees as described above, the obtuse angle λ is larger than that of the conventional structure in which the welding groove wall surface is vertical. Is mitigated, and effectively acts to prevent the occurrence of catching.

  In this way, since the inclination angle α of the calling wall surface 5 is set first, in order to further improve the reliability of preventing the tip of the blade 3 from being caught at the corner portion where the calling wall surface 5 and the inclined surface 7 are in contact with each other. The obtuse angle λ may be further increased by increasing the inclination angle β of the inclined surface 7 as much as possible. However, if the radial position of the upper end of the inclined surface 7 is constant, the height b of the protruding ring 6 increases as the inclination angle β of the inclined surface 7 increases.

  Since the protruding ring 6 protrudes in the air path of the wind created by the blade 3 so as to overlap the blade 3, the blowing area of the blade 3 is reduced. For this reason, as the height b is higher, the amount of decrease in the blowing area of the blades 3 becomes larger. In addition, the ventilation area of the blade | wing 3 means the wind path area of the wind to the direction orthogonal to the longitudinal direction of the crossflow fan 1 produced with the blade | wing 3. FIG. The protruding ring 6 overlaps with a part of the blade 3 in the air blowing direction of the blade 3, and the air generated by the blade 3 is blocked by the protruding ring 6 and is not blown in this overlapping portion, so that the air passage area is reduced accordingly. It is.

  However, as described above, the connecting component member 2 shown in the present embodiment increases the rigidity of the plate-like support member 8 by two means, so that the contraction amount in the inner diameter direction of the blade 3 is the conventional one. Compared to a large reduction. Therefore, the upper end position of the inclined surface 7 of the protruding ring 6 can be positioned outward from the conventional one. Therefore, even if the inclination angle β of the inclined surface 7 is set so that the obtuse angle λ does not cause the tip of the blade 3 to be caught, the height b of the protruding ring 6 can be lowered.

  Therefore, in the connecting component 2 of the present embodiment, the inclination angle β of the inclined surface 7 is set from 45 degrees to 60 degrees, and the obtuse angle λ of the corner portion in contact with the inclination angle α of the incoming wall surface 5 is set. From 140 degrees to 165 degrees, the blade 3 is prevented from being caught at the corners. The protruding ring 6 is formed such that its height b is smaller than the height h of the plate-like support member 8. As a matter of course, the height b of the protruding ring 6 is smaller than the width a of the protruding ring 6 which is larger than the height h of the plate-like support member 8.

  The smaller the inclination angle β, the lower the height b of the protruding ring 6. When β = 45 degrees (140 degrees ≦ λ ≦ 150 degrees), the height b is half the height h of the plate-like support member 8. The reduction of the blowing area of the blade 3 by the protruding ring 6 can be suppressed, that is, the blowing area of the blade 3 can be increased as compared with the conventional one, and the blowing amount of the cross flow fan 1 can be increased. Then, the blade 3 can be smoothly inserted into the welding groove 4 with a smaller force than the conventional one without the tip of the blade 3 being caught at the corner where the welding groove 4 and the protruding ring 6 are in contact with each other.

  Here, the inclination angle β of the inclined surface 7 is configured to be smaller than the inclination angle α of the incoming wall surface 5 of the welding groove 4. If the inclination angle α of the incoming wall surface 5 and the inclination angle β of the inclined surface 7 are equal to each other at an angle smaller than 90 degrees, the obtuse angle λ becomes 180 degrees, and the corner portion where the welding groove 4 and the protruding ring 6 are in contact disappears. And it becomes a continuous plane.

  In addition, in this connection component 2, in order to suppress the shrinkage | contraction to the inner side of the blade | wing 3 front-end | tip, the beam 9 is provided as a means to raise the rigidity of the plate-shaped support member 8, and the width | variety E of the plate-shaped support member 8 is set. Although the plate-like support member 8 is made to be highly rigid while suppressing the increase in the weight of the plate-like support member 8 by reducing it to 25% or less with respect to the outer diameter φDo of the plate-like support member 8, the beam 9 is always necessary. It is not something to do.

  Without providing the beam 9, the inner diameter φDi of the plate-like support member 8 is further reduced so that the width E of the plate-like support member 8 exceeds 25% of the outer diameter φDo of the plate-like support member 8. Thus, the rigidity of the plate-like support member 8 may be increased by increasing the width a of the protruding ring 6 whose inner diameter is equal to φDi. In this case, the ratio of the width a of the protruding ring 6 to the width E of the plate-like support member 8 becomes higher. When configured in this way, the weight of the plate-like support member 8 may increase as compared with the case where the beam 9 is formed, but the range in which the horizontally installed cross-flow fan 1 is not bent in the direction of gravity. If so, there is no problem.

  In the connecting structural member 2 of the cross low fan 1 shown in the present embodiment, the opening of the welding groove 4 formed in the plate-like support member 8 into which the tip of the blade 3 is inserted is larger than the bottom surface 4a. In this way, since the incoming wall surface 5 is inclined (in this embodiment, the inclination angle α is 75 degrees to 85 degrees), the assembly operator of the cross flow fan 1 completes the insertion of the blade 3 into the welding groove 4 Can be recognized by the feeling that the blade 3 slides on the wall surface 5 and falls to the welding groove bottom surface 4a, or the blade 3 can be prevented from coming off after insertion. Occurrence of poor welding due to incorrect insertion at a fixed position can be prevented.

  The connecting component 2 has a lower end in contact with the inner peripheral side of the incoming wall surface 5 having an inclination angle α, and an inclination angle β (in the present embodiment, β is 45 in the central direction of the inner diameter of the plate-like support member 8). Since the projecting ring 6 having the inclined surface 7 that is inclined at an angle of 60 degrees to expand the tip of the blade 3 contracted in the inner diameter direction to the welding groove 4 is provided, the inner peripheral side of the calling wall surface 5 and the projecting ring 6 are provided. The obtuse angle λ of the corner portion in contact with the inclined surface 7 can be increased, and the occurrence of catching at the corner portion of the tip of the blade 3 that has slid the inclined surface 7 can be prevented.

  Therefore, it becomes possible to smoothly insert the blade 3 into the welding groove 4 with a force smaller than that of the conventional one, and the occurrence of the defect of the blade 3 of the connecting component 2 and the above-described corner portion is eliminated. Abnormal noise is not generated or no noise is increased during blowing, the assembly workability of the cross flow fan 1 is improved, the assembly work time can be shortened, and the blade 3 reaches the proper welding position of the welding groove 4. Occurrence of manufacturing defects due to not being inserted can be prevented.

  Further, the connecting component member 2 is configured such that the radial width a of the annular projecting ring 6 is larger than the height h of the plate-like support member 8 (twice or more in this embodiment). Since the protruding ring 6 having a radial width a (a ≧ 2 * h in the present embodiment) larger than the height h of the supporting member 8 is provided, and the rigidity of the plate-like supporting member 8 is enhanced by the protruding ring 6, It is possible to suppress deformation of the plate-like support member 8 at the time of forming the coupling component member 2 and to reduce the amount of shrinkage deformation to the inside of the tip end portion of the blade 3.

  The connecting component 2 is configured such that the radial width a of the annular projecting ring 6 is 25% or more of the radial width E of the annular plate-shaped support member 8. Since the rigidity of the plate-like support member 8 is increased, deformation of the plate-like support member 8 at the time of forming the connecting component 2 can be suppressed, and the amount of contraction deformation to the inside of the tip portion of the blade 3 can be reduced.

  Further, the connecting component 2 is coupled to the inner peripheral portion of the annular plate-like support member 8 in the vicinity of the center of the inner diameter of the plate-like support member 8, and extends radially from the inner periphery of the plate-like support member 8. Since at least three beams 9 to be joined to the surface are formed and the rigidity of the plate-like support member 8 is increased together with the protruding ring 6, the deformation of the plate-like support member 8 at the time of forming the connecting component 2 is suppressed, and the blade The amount of contraction deformation to the inside of the tip portion of 3 can be reduced.

  Further, the connecting component 2 is provided with the protruding ring 6 and the beam 9 so that the radial width E of the annular plate-like support member 8 is 25% or less with respect to the outer diameter φDo of the plate-like support member 8. The rigidity of the plate-like support member 8 is increased while suppressing the increase in the weight of the plate-like support member 8, the deformation of the plate-like support member 8 at the time of forming the connecting component 2 is suppressed, and the tip of the blade 3 is The amount of shrinkage deformation inward can be reduced.

  Further, the connecting component 2 is not provided with the beam 9, and the inner diameter φDi is set such that the width E of the annular plate-like support member 8 is larger than 25% with respect to the outer diameter φDo of the plate-like support member 8. The width of the projecting ring 6 is increased by making the inner diameter of the annular projecting ring 6 the same as that of the plate-like support member 8, so that the rigidity of the plate-like support member 8 is increased, and the connecting component 2 is formed. The deformation of the plate-like support member 8 can be suppressed, and the amount of contraction deformation to the inside of the tip portion of the blade 3 can be reduced.

Further, the connecting component member 2 increases the rigidity of the plate-like support member 8 and suppresses shrinkage deformation to the inside of the tip end portion of the blade 3, thereby reducing the height b of the protruding ring 6 and the width a of the protruding ring 6. Is smaller than the height h of the plate-like support member 8 (in this embodiment, b≈1 / 2 * h can be supported), and the reduction of the blowing area of the blades 3 by the protruding ring 6 is suppressed. That is, as compared with the conventional one, the blowing area of the blades 3 is increased, the blowing amount of the cross flow fan 1 can be increased, and the cross flow fan 1 having excellent blowing performance can be configured.

  The end plate member 100 shown in FIG. 6 is a member arranged at one end portion (left end in FIGS. 8 and 9) in the longitudinal direction of the cross flow fan 1 shown in FIGS. The end plate member 100 itself does not have a blade, and a welding groove 4 is formed on one surface side of the plate-like support member 108 to insert and weld the blade 3 of the connecting component 2 disposed on one end side thereof. doing. In addition, this welding groove | channel 4 is the same as the welding groove | channel 4 formed in the connection structural member 2 as the code | symbol is the same, and is arrange | positioned by the unequal pitch of the space | interval similar to the unequal pitch of the blade | wing 3, A calling wall surface 5 having an inclination angle α is formed on the entire circumference of the wall surface.

  Similarly to the connecting component 2, an inclined surface 7 having an inclination angle β that expands the tip of the blade 3 of the connecting component 2 to the welding groove 4 is provided in contact with the inner peripheral side of the incoming wall 5. However, the protruding ring 106 having the inclined surface 7 is formed with a width a smaller than the protruding ring 6 of the connecting component 2. This is because the end plate member 100 does not have blades, so that it is not necessary to prevent shrinkage deformation in the inner diameter direction of the blades, and the plate-like support member 108 is sufficiently larger than the outer diameter of the plate-like support member 108 at the center. This is because it is close to a solid disk with only a small rotation shaft 10 fixed and has high rigidity.

  Note that the height of the protruding ring 106 is the same as the height b of the protruding ring 6 of the connecting component member 2, and suppresses a reduction in the blowing area of the blades 3 of the connecting component member 2 connected to the end plate member 100. doing. This is the same as the connecting component 2.

  The plate-like member 108 of the end plate member 100 is made of resin, and the metal rotation shaft 10 is attached to the center thereof. In this end plate member 100, the rotating shaft 10 is made of aluminum and is fixed to the plate-like support member 108 by insert molding. In the insert molding, a resin-made rotating shaft 10 as an insert product is loaded into a resin-molding die of the plate-like support member 108, and then the resin is injected, and the rotating shaft 10 is placed at a predetermined position. The rotating shaft 10 is fixed to the plate-like support member 108 by being wrapped with a molten resin and solidified. Thereby, the end plate member 100 in which different materials are integrated is formed.

  Note that the method of fixing the rotating shaft 10 is not limited to insert molding, and the plate-like support member 108 and the rotating shaft 10 may be connected to the rotating shaft, such as press-fitting, bolt fixing, or fixing using a key and a key groove. Any other method may be used as long as it can rotate integrally around 10. The rotating shaft 10 is configured to protrude at least from the surface opposite to the surface on which the welding groove 4 of the plate-like support member 108 is formed so that the rotation is supported by a bearing or the like.

  7 is a member disposed at the other end portion in the longitudinal direction of the crossflow fan 1 shown in FIGS. 8 and 9 (the right end in FIGS. 8 and 9). The plate member 100 is disposed at the end opposite to the end where the plate member 100 is disposed. The end component member 200 has the blades 3 with unequal pitch intervals similar to those of the connecting component member 2 protruding from one surface by integral resin molding, but on the surface opposite to the protruding surface of the blade 3. Unlike the connecting component 2, no welding groove is formed, and therefore no protruding ring is provided.

  At the center of the plate-like support member 208 of the end component member 200, a boss 12 for connecting and fixing a drive shaft of a fan motor (not shown) that drives the cross flow fan 1 is provided. The boss 12 is made of metal, and a part of the height range of the outer periphery thereof is fixed to an elastic body 11 formed of rubber or the like. Here, aluminum is used as the material of the boss 12.

  The plate-like support member 208 is annular like the plate-like support member 8 of the connecting component 2, but no welding groove is formed as described above, and the inner circumference diameter is the same as that of the plate-like support member 8. It is smaller than the inner diameter φDi. The boss 12 is fixed to the fitting hole 14 which is the inner periphery of the plate-like support member 208 via the elastic body 11 such as rubber. The elastic body 11 absorbs the vibration of the fan motor, and prevents the vibration of the fan motor from being transmitted to the cross flow fan 1 and thus to other parts of the device on which the cross flow fan 1 is mounted. Here, in order to reinforce the connection force between the plate-like support member 208 made of resin and the elastic body 11 made of a rubber material, the connection ring plate 13 made of aluminum insert-molded on the plate-like support member 208 therebetween. And connecting them.

  In a state where the elastic body 11 or the like is attached and fixed to the fitting hole 14 of the plate-like support member 208, the inner diameter center of the boss 12 is substantially concentric with the center of the rotating shaft 10 of the end plate member 100. The boss 12 is installed so as to protrude toward the blade 3, and the end surface of the elastic body 11 and the boss 12 is the surface of the plate-like support member 208 on the surface of the plate-like support member 208 opposite to the projecting surface of the blade 3. It is installed so as to be on the same surface as the surface.

  When the drive shaft of the fan motor is fitted on the inner periphery of the boss 12 and fixed with bolts or the like, and the drive shaft rotates by driving the fan motor, the rotational drive force is transmitted to the boss 12 and the rotation of the fan motor drive shaft The cross flow fan 1 rotates in synchronization. When the cross flow fan 1 is rotated, the fan motor drive shaft is on the end component member 200 side, and the rotation shaft 10 fixed to the end plate member 100 is on the opposite end plate member 100 side. It is rotatably supported by a bearing (not shown). In addition, when the crossflow fan 1 is installed horizontally, the weight of the crossflow fan 1 including the stationary state which is not rotating is also supported by those bearings.

  In this end member 200, the boss 12 for fixing the drive shaft of the fan motor is provided. However, like the end plate member 100, the rotating shaft is fixed and the rotating shaft is connected to the fan motor. Thus, the rotational driving force of the fan motor may be transmitted to the cross flow fan 1.

  Next, a procedure for assembling the cross flow fan 1 composed of the above-described connecting component 2 and the like will be described. First, the end plate member 100 is placed in a welding facility with the surface on which the welding groove 4 is formed facing upward. Then, the tip end portion of the blade 3 is inserted into the welding groove 4 of the end plate member 100 and the connecting component member 2 is stacked on the end plate member 100. At this time, the surface where the welding groove 4 of the connection component 2 is formed faces upward. Next, the tip of the blade 3 of another connecting component 2 is inserted into the welding groove 4 and the other connecting components 2 are stacked vertically in series. Thereafter, the connecting component 2 is stacked up to a predetermined amount.

  In the cross flow fan 1 shown in FIGS. 8 and 9, eight connection component members 2 are stacked on the end plate member 100. At the end of stacking, the end component 200 is stacked by inserting the tip of the blade 3 of the end component 200 into the welding groove 4 of the connecting component 2 positioned at the top at this point.

  When the blade 3 is inserted into the welding groove 4 by this stacking, even if the tip of the blade 3 contracts in the inner diameter direction, the tip of the blade 3 slides on the projecting ring 6 or the inclined surface 7 of the projecting ring 106 and has an outer diameter. Expanded in the direction. And at the corner | angular part which the inclined surface 7 and the calling-in wall surface 5 inner periphery side of the welding groove | channel 4 contact | connect, the corner | angular part is smoothly moved without being caught, the sliding-in wall surface 5 is slid down, and the welding groove | channel 4 The bottom surface 4a can be reached. At this time, since the catch at the corner portion does not occur, the blade 3 can be inserted into the welding groove 4 with a small force. Further, the incoming wall surface 5 of the welding groove 4 may make it possible for the operator of the cross flow fan 1 to feel that the blade 3 has been inserted into the welding groove 4 or to prevent the blade 3 from coming off after insertion. It is possible to avoid a state where the blade 3 is not correctly inserted into the fixed position of the welding groove 4. That is, the workability and reliability of the assembly work of the cross flow fan 1 are excellent.

  In addition, when the plurality of connecting component members 2 and the end component members 200 are stacked, the blades 3 are inserted into the predetermined welding grooves 4 by applying a force in the projecting direction of the blades 3, that is, in the gravitational direction, while rotating each of them. After the whole is stacked vertically in series, the end component member 200 is pressurized in the direction of gravity, and the blades 3 of the end component member 200 and the plurality of connected component members 2 are welded. 4 may be inserted.

  In a state in which the plurality of connecting component members 2 and the end component member 200 are stacked vertically in series on the end plate member 100, the phase of the blade 3 and the welding groove 4 in one connecting component member 2 is 2. Since the angle is shifted by a predetermined angle of ˜8 degrees, each time the blades 3 are stacked, the blades 3 are out of phase with the blades 3 positioned above and below. The phase shift between the blade 3 and the welding groove 4 is the same angle in all the connecting components 2, and the phase shift between the other blades 3 positioned above and below the blade 3 is the same angle in the same direction (the blade 3 and It is shifted by the phase shift of the welding groove 4. Along with the unequal pitches of the blades 3, noise during operation such as wind noise of the cross flow fan 1 is reduced by the phase shift of the blades 3.

  Further, when the blade 3 is formed so as to expand in the outer diameter direction, or when the blade 3 is displaced on the plane of the plate-like support member 8 in the front-rear and left-right directions, the blade 3 is on the surface of the plate-like support member 8. Even when placed, the wall surface having the inclination angle α in which the tip of the blade 3 is formed around the entire wall surface of the welding groove 4 by pressing the connecting component 2 while rotating or moving it. 5, slides down along the bottom of the welding groove 4 and reliably reaches the bottom of the welding groove 4, and prevents the occurrence of poor welding of the cross flow fan 1 due to the blade 3 not being inserted to the correct position of the welding groove 4. Can do.

  In a state where the stacking of the plurality of connecting components 2 on the end plate member 100 and the end component 200 on the uppermost portion is completed, the uppermost end component 200 is compressed so that the cross flow fan 1 is compressed in the longitudinal direction. The plate-like support plate 208 is pressurized and fine ultrasonic vibration is applied in the pressurized state to melt the melting allowance provided on the blade tip surface 3a and join the blade tip surface 3a and the welding groove bottom surface 4a. The cross flow fan 1 is completed by this joining.

  Here, ultrasonic welding is used in the welding joining of the blades 3 and the welding grooves 4, but fine vibrations may be mechanically applied without using ultrasonic waves. Further, the melting allowance may be melted and joined by heating such as a heater, laser, induction heating or the like without using frictional heat.

  In the cross flow fan 1 assembled in this way, when the blade 3 is inserted into the welding groove 4, the tip of the blade 3 is the angle at which the wall surface of the welding groove 4 (calling wall surface 5) and the inclined surface 7 of the protruding ring 6 contact. Therefore, the blades 3 and the corners are not damaged, and no abnormal noise is generated or noise is increased when the crossflow fan is blown. Moreover, since the height b of the protrusion ring 6 can be made low, the reduction | decrease of the ventilation area of the blade | wing 3 can be suppressed, and the ventilation volume of the crossflow fan 1 can be made larger than the conventional one. That is, the cross flow fan 1 with low noise and excellent blowing performance can be obtained.

  Further, when the blade 3 is inserted into the welding groove 4 in the assembly work of the cross flow fan 1, the tip of the blade 3 is not caught at the corner where the calling wall surface 5 and the inclined surface 7 of the protruding ring 6 contact each other. The blade 3 can be smoothly inserted into the welding groove 4 with a small force, so that the assembly workability is excellent and the assembly work time of the cross flow fan 1 can be shortened. In addition, it is possible to prevent the occurrence of defective manufacturing or defective manufacturing due to the blade 3 not being inserted up to the normal welding position of the welding groove 4 or welding at an illegal position. Further, since the tip of the blade 3 is not caught, the assembly work by a robot or the like can be automated.

  As described above, the connecting component member 2 shown in the present embodiment has the calling wall surface 5 with the inclination angle α around the bottom surface of the welding groove 4 on one surface side of the plate-like support member 8, and the calling wall surface 5. A two-stage inclined structure of the protruding ring 6 having an inclination angle β is formed in contact with the inner peripheral surface of the protrusion ring 6. For this reason, even when the tip of the blade 3 of the connecting component 2 contracts in the inner diameter direction due to distortion during molding of the connecting member 2, the blade 3 is inserted into the welding groove 4 of another connecting member 2. In addition, the blade 3 slides down while the inclined surface 7 of the protruding ring 6 is expanded to a normal size, and a catch occurs at the corner where the incoming wall surface 5 of the welding groove 4 and the inclined surface 7 of the protruding ring 6 contact each other. Without being inserted smoothly into the welding groove 4. Thereby, the front-end | tip part of the blade | wing 3 and the protrusion ring 6 are lost, and the working time required for an assembly can be shortened rather than the conventional thing.

  Further, by changing the inclination angle α of the incoming wall surface 5 of the welding groove 4 from 75 degrees to 85 degrees, the blade 3 once inserted into the welding groove 4 is restored by a restoring force that tends to contract in the inner diameter direction of the blade 3. It can prevent coming off from the welding groove 4. In addition, when the assembly operator temporarily fixes the connecting components 2 to each other before welding (inserts the blade 3 into the welding groove 4), it can be recognized as a response that the blade 3 has been inserted to the bottom surface of the welding groove 4. There is an effect of reducing poor welding due to the blade 3 not being set at an accurate welding position.

  Further, since the incoming wall surface 5 has an inclination of an angle α, the protruding ring is used for the purpose of eliminating the hooking of the tip of the blade 3 at the corner where the welding groove 4 and the protruding ring 6 are in contact with each other as in the conventional case. Even if the inclination angle β of the inclined surface 7 is increased and the height b of the protruding ring 6 is not increased, the insertability into the welding groove 4 can be improved. Thereby, the ventilation area of the blade | wing 3 after the assembly | attachment of the crossflow fan 1 can fully be ensured, and it is possible to increase ventilation volume rather than the conventional one.

  In addition, since the incoming wall surface 5 with the inclination angle α is provided on the entire circumference of the welding groove 4, the blade 3 is enlarged in the outer diameter direction, or the tip surface 3 a of the blade 3 is connected to the connecting component 2. Even if the blade 3 cannot be placed at the proper position on the plate-like support member 8 due to various reasons, such as when it is placed on the plane where the welding groove 4 is formed shifted in the front-rear and left-right directions. By rotating the connecting component 2 while applying pressure to the connecting component member 2 and moving it back and forth and right and left, the blade 3 slides down along the wall surface 5 to the welding groove 4, and reaches the welding surface (bottom surface) 4 a of the welding groove 4. It becomes possible to reach 3 front end surface (welding surface) 3a. Due to these effects, it is possible to shorten the work time required for assembly as compared with the conventional cross flow fan, and to reduce noise and improve the air blowing performance.

Embodiment 2. FIG.
In the second embodiment, application equipment using the cross flow fan 1 shown in the first embodiment as a blower will be described. Here, an example in which the cross flow fan 1 is used for an indoor unit of an air conditioner will be described. FIG. 11 is a longitudinal sectional view of the indoor unit 300 of the air conditioner. In FIG. 11, the housing 15 is formed with a suction port 20 for sucking indoor air. The suction port 20 includes a top surface suction port 20a formed on the top surface side of the housing 15 and a lower suction port 20b provided on the lower front side. However, only one of the suction ports 20 may be provided.

  Inside the housing 15, the cross flow fan 1 shown in the first embodiment is stored horizontally along the longitudinal direction of the indoor unit 300. A fin and tube heat exchanger 16 is disposed around the cross flow fan 1 so as to surround the cross flow fan 1. The heat exchanger 16 includes a front heat exchanger bent in a U shape on the front side of the housing 15 and a rear heat exchanger arranged in a C shape with respect to the upper portion of the front heat exchanger. It is configured.

  A blow-out port 21 through which the conditioned air after heat exchange is blown into the room is provided in the lower part of the housing 15 so as to extend in the longitudinal direction of the indoor unit 300. The outlet 21 is the downstream side of the cross flow fan 1 and serves as an outlet of an outlet air passage 23 having a lower portion of the casing 15 and an upper portion of the nozzle 19. In addition, the nozzle 19 which comprises the blowing air path 23 is arrange | positioned under the front heat exchange heat of the heat exchanger 16, receives the condensed water adhering to the heat exchanger 16 on the upper surface side, and discharges condensed water to the outdoors It plays the role of a drain pan that guides the condensed water to the hose.

  In the blowout air passage 23, a left / right airflow direction plate 17 is provided that can change the airflow direction of the conditioned air blown into the room from the air outlet 21 into the room. A plurality of the right and left wind direction plates 17 are arranged in parallel along the longitudinal direction of the outlet 21. Further, an upper and lower airflow direction plate 18 that can change the vertical airflow direction of the conditioned air to be blown out is installed at the tip of the blowout air passage 23, that is, the air outlet 21. Control to change the direction of these wind direction plates 17 and 18 is performed, and the wind direction of the conditioned air blown into the room from the blowout port 21 is adjusted.

  A filter 22 is provided at a position downstream of the suction port 20 and upstream of the heat exchanger 16, and the filter 22 removes dust and the like contained in the indoor air sucked from the suction port 20. The deterioration of the heat exchange performance of the heat exchanger 16 due to adhesion of dust or the like to the heat exchanger 16 is prevented.

  When the air conditioner is operated based on the operation command, the cross flow fan 1 disposed on the downstream side of the heat exchanger 16 and the upstream side of the outlet 21 is rotationally driven. The cross flow fan 1 is connected to a fan motor (not shown) disposed on one side surface of the housing 15 and rotates when the rotational driving force of the fan motor is transmitted. On the other side surface, the rotation shaft 10 fixed to the end plate member 100 is supported for rotation by a bearing disposed on the other side surface of the housing 15.

  Due to the suction function by the rotation of the cross flow fan 1, room air is sucked into the housing 15 from the suction port 20. The sucked room air is guided to the heat exchanger 16 after dust and the like are removed by the filter 22 and exchanges heat with the refrigerant of the refrigeration cycle flowing inside the heat exchanger 16 to become conditioned air. The conditioned air is blown into the room from the blowout port 21 through the blowout air passage 23 by the blowing function by the continuous rotation of the cross flow fan 1. The wind direction of the conditioned air to be blown is adjusted by the left and right wind direction plates 17 and the upper and lower wind direction plates 18.

  The fan motor that drives the cross flow fan 1 has a variable rotation speed, and the rotation speed of the cross flow fan 1 can be changed by controlling the rotation speed of the fan motor. The rotational speed of the crossflow fan 1 is changed according to the difference between the actual room temperature and the set temperature, and the amount of conditioned air blown from the blowout port 21 is adjusted.

  Since the indoor unit 300 of the air conditioner is configured using the cross flow fan 1 shown in the first embodiment as described above, it is possible to suppress a reduction in the blowing area of the blades 3 by the protruding ring 6 and to send an air volume. Thus, the indoor unit 300 of the air conditioner excellent in the air blowing performance that achieves this improvement is obtained. Further, since there are no defects in the blade 3 and the protruding ring 6 of the cross flow fan 1, a singular sound (hue sound) represented by the product of the number of blades 3 (Z) and the rotation speed of the cross flow fan 1 (N). And low noise air conditioning that prevents the generation of abnormal noise such as intermittent noise when the high load is applied to the crossflow fan 1 and that reduces noise variation. The indoor unit 300 of the machine can be provided.

  In addition, the crossflow fan 1 shown in Embodiment 1 is not limited to the indoor unit 300 of the air conditioner, but is used for a device that blows air from an elongated outlet, thereby reducing the noise of the device and increasing the efficiency of the blowing performance. Can be achieved.

It is a perspective view which shows the connection structural member of the crossflow fan in Embodiment 1 of this invention. It is a perspective view from another viewpoint of the connection component shown in FIG. It is a fragmentary sectional view which shows the welding groove periphery of the connection structural member shown in FIG. It is a fragmentary sectional view showing the mode in the middle of inserting blade 3 of another connection component to the welding slot shown in FIG. FIG. 4 is a partial cross-sectional view showing a state where a blade 3 of another connecting component has been inserted into the welding groove shown in FIG. 3. It is a perspective view which shows the end plate member installed in one edge part of the crossflow fan in Embodiment 1 of this invention. It is sectional drawing of the edge part component material installed in the other edge part of the crossflow fan in Embodiment 1 of this invention. It is a perspective view of the crossflow fan shown in Embodiment 1 of this invention. It is a perspective view from another viewpoint of the crossflow fan shown in FIG. It is a schematic diagram for demonstrating the obtuse angle (lambda) of the corner | angular part which the calling wall surface of the welding groove inner peripheral side of the connection structural member shown in FIG. 1 and the inclined surface of a protrusion ring contact. It is sectional drawing of the indoor unit of the air conditioner using the crossflow fan shown in Embodiment 1 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Cross flow fan, 2 connection component, 3 blade | wing, 3a blade | tip front surface (welding surface), 4 welding groove, 4a welding groove bottom surface (welding surface), 5 call-in wall surface, 6,106 protruding ring, 7 inclined surface, 8 , 108, 208 Plate-like support member, 9 beams, 10 rotating shaft, 11 elastic body, 12 boss, 13 coupling ring plate, 14 fitting hole, 15 housing, 16 heat exchanger, 17 left and right wind direction plate, 18 Up-and-down wind direction plate, 19 nozzle, 20 air inlet, 20a Top surface air inlet, 20b Lower air inlet, 21 Air outlet, 22 Filter, 23 Air outlet, 100 End plate member, 200 End member, 300 Air conditioner Indoor unit.

Claims (5)

A plurality of blades projecting at a predetermined unequal pitch in the circumferential direction on one surface side of the annular plate-shaped support member;
The plate-like support member has a bottom surface that is provided at a predetermined non-uniform pitch in the circumferential direction on a surface opposite to the surface on which the blade projects, and has a shape similar to the cross-sectional shape of the blade. A plurality of welding grooves forming a calling wall whose entire circumference is inclined so that the opening is enlarged from the bottom surface;
Provided on the plate-shaped supporting member the welding groove on the surface formed of, of the vane is inclined toward the center of the plate-shaped support member with the lower end is in contact with the inner peripheral side upper portion of said attracting wall It has a tip on the outer circumferential inclined surface that the welding groove or in guides, an annular protruding ring of at least 25% and comprising radial width a radial width E of the plate-like support member,
A connecting component for a cross flow fan, comprising: The inclination angle β of the inclined surface, which is the angle formed by the plane of the plate-like support member and the inclined surface, is greater than the inclination angle α of the incoming wall surface, which is the angle formed by the plane of the plate-like support member and the incoming wall surface. The connecting component of the crossflow fan according to claim 1, wherein the connecting component is small . 60 degrees from the inclination angle β is 45 degrees of the inclined surface, the attracting coupling component of the crossflow fan according to 請 Motomeko 2 you, wherein the inclination angle α is 85 degrees 75 degrees of the wall . The connecting component of the crossflow fan according to any one of claims 1 to 3 , wherein the tip of the blade of another connecting component is inserted into the welding groove, and the welding groove and the blade are welded. Thus, at least a plurality of cross-flow fans connected in series. A heat exchanger housed in a housing and heat-exchanged indoor air sucked from a suction port provided in the housing into conditioned air;
A blowout port for blowing out the conditioned air into the room;
A cross flow fan that is disposed on the downstream side of the heat exchanger inside the housing and is driven to rotate, thereby sucking the room air from the suction port and blowing the conditioned air from the blow port,
With
An indoor unit of an air conditioner, wherein the cross flow fan is formed by connecting at least a plurality of cross flow fan connecting components according to any one of claims 1 to 3 in series.

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