JP2015151862A - Impeller and air fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure that can reduce man-hours and provide low-cost and high quality by manufacturing an impeller without welding.SOLUTION: The impeller includes a supporting material 50 and multiple blade materials 70. The supporting material 50 includes a slit 52 and cutout 53 alternately. Multiple outer peripheral projection parts 51 are formed between the slit 52 and the cutout 53. Accordingly, the supporting material 50 and the blade material 70 are fixed to each other without welding by inserting the blade material 70 into the slit 52 and folding the outer peripheral projection parts 51 with plastic deformation (swaging) of the outer peripheral projection part 51.

Description

  The present invention relates to an impeller and a blower.

  Conventionally, a sirocco fan, which is a kind of impeller, is composed of a pair of face plates (side plates) and a large number of blade members provided along the circumferential direction between the face plates and spaced apart. A typical manufacturing structure is, for example, A. B. A structure in which a single plate is drawn by pressing. A structure in which blades are fastened to a ring and side plates are fastened, or C.I. A blade material is inserted into a ring, bent in one direction, welded at the bent portion, strength is ensured, and a face plate is welded. Further, in a structure having two (for example, mainly left and right) air outlets (air outlet directions), two sirocco fans of the same type or the like are provided side by side with an intermediate member if necessary (FIG. 20 to FIG. 22).

  A. ~ C. The structure that is inserted and welded as in the structure has a plurality of steps, and there are improvements such as complicated work, labor and cost increase. In addition, in the structure in which two sirocco fans of the same type are assembled, the longitudinal dimension of the sirocco fan is widened, the size of the device is increased, the work is complicated, labor is required, or the cost is increased, etc. There were improvements.

  A. As a sirocco fan having a structure, for example, the invention of Japanese Patent Application Laid-Open No. 2011-190815 shown in Document 1 can be cited. As described in paragraph [0001], “a sirocco fan for a range hood in which a plurality of blades formed by cutting and raising a metal plate are arranged at equal intervals in the circumferential direction”.

  As other impellers, for example, a turbo fan described in Japanese Patent Application Laid-Open No. 2013-117233 disclosed in Document 2 can be cited. This invention shows a processing method in which blade members are welded one by one to a side plate. Thus, when welding many blade | wing materials, it becomes a several process, requires time and man-hours, improvement points, such as causing inefficiency and an increase in cost, are mentioned.

JP 2011-190815 A JP 2013-117233 A

  Document 1 is a structure of a plurality of blades formed by cutting and raising a metal plate, and is different from a structure for attaching a face plate by bending as in the present invention. The C.I. This type of sirocco fan is not mentioned in the literature, but is similar to the present invention. However, the present invention is not related to the prior art related to, for example, bending to achieve welding-less and a structure having two air outlets.

  The present invention has been made to solve the above-mentioned problems, and by proposing a structure for manufacturing an impeller or attaching an impeller to a face plate without using welding (without welding), An object is to eliminate chatter noise caused by the blade material and to prevent rattling.

In order to achieve the above object, an impeller according to a first aspect of the present invention includes:
In an impeller of a sirocco fan that is rotatably provided in the blower,
A disk-shaped support material provided with a disk-shaped pair of first face plate and second face plate, interposed between the first face plate and the second face plate, and partitioning the first face plate and the second face plate When,
In this support plate, slits and cutouts provided alternately from the outer edge toward the inner edge, and
Blade members arranged at equal intervals in the circumferential direction of the first face plate and the second face plate;
With
A plurality of outer peripheral protrusions are formed between the slit and the notch,
The blade member is fixed to the slit using plastic deformation of the outer peripheral projection.

  The outer peripheral projection may be bent toward the blade member.

The blade member is provided with an outer edge side notch on the outer edge side of the support material,
The outer edge side notch may be engaged with the outer peripheral protrusion of the support material.

The blade member is provided with a center side notch on the center side of the support material,
The center part side notch may abut against the innermost part of the slit.

  A convex portion protruding toward the other wall surface may be formed on one wall surface inside the slit.

In the first face plate, a plurality of through holes are formed along an outer edge portion,
At least one of a first convex portion and a second convex portion, which is inserted into the through hole of the first face plate at one end of the blade member, and whose tip is bent along the surface of the first face plate. Is formed,
When the first convex portion and the second convex portion are formed at one end of the blade material, the second convex portion may be bent in a direction opposite to the first convex portion. Good.

In the second face plate, a plurality of through holes are formed along the outer edge portion,
The other end of the blade member is inserted into the through hole of the second face plate, and at least a third convex portion and a fourth convex portion whose tip portion is bent along the surface of the second face plate. One is formed,
When the third convex portion and the fourth convex portion are formed on the other end of the blade material, the fourth convex portion is bent in the opposite direction to the third convex portion. Also good.

The blower according to the second aspect of the present invention is:
A motor,
The impeller attached to the rotating shaft of the motor;
It is characterized by providing.

  The impeller of the present invention includes a support member, a plurality of blade members, and a disk-shaped first face plate and a second face plate. In the circumferential direction of the support material, a curved slit formed from the outer edge toward the inner edge and a curved notch formed from the outer edge toward the inner edge are alternately and equally spaced. Is provided. The blade material is arranged around the rotation axis and inserted into the slit. For example, both ends in the direction of the rotation axis of the blade material are fixed to the first face plate and the second face plate without welding. Further, a plurality of outer peripheral projections are formed between the slits and the notches provided in the support material. By inserting the blade material into this slit and bending the outer peripheral projection portion in the opposite direction (by plastic deformation (caulking) of the outer peripheral projection portion), both (the support material and the blade material) can be fixed without welding. By fixing both of them without welding, the time can be shortened and the man-hours can be saved, and the distortion can be eliminated to improve the quality. Moreover, it can contribute to lowering the manufacturing cost of the impeller. Further, the impeller has a structure having two air outlets provided on the first face plate and the second face plate and also provided on a support member that partitions the first face plate and the second face plate. Thereby, for example, downsizing of the equipment (reduction in the width of the sirocco fan) can be achieved. Furthermore, after the support material and the blade material are temporarily fixed, the support material and the blade material can be fixed by bending the outer peripheral side notch into the outer circumferential protrusion so that the support material and the blade material can be fixed. The chatter noise (due to rotation) generated between the blade material and the backlash of the blade material can be prevented.

It is a front view of some omission of a drying device concerning an embodiment of the present invention. It is sectional drawing which shows the mode by abbreviate | omitting one part of the drying apparatus which concerns on embodiment of this invention. It is a perspective view of the impeller which concerns on embodiment of this invention. It is a top view which shows the blade | wing material which concerns on embodiment of this invention. It is a top view which shows the 1st faceplate which concerns on embodiment of this invention. It is a top view which shows the support material which concerns on embodiment of this invention. It is the perspective view which expanded some support materials concerning the embodiment of the present invention. It is an assembly perspective view of an impeller concerning an embodiment of the present invention. It is a perspective view which shows a mode at the time of fixing the blade | wing material which concerns on embodiment of this invention to a 1st faceplate. It is a perspective view which shows a mode after fixing the blade | wing material which concerns on embodiment of this invention to the 1st faceplate. It is a perspective view which shows a mode at the time of fixing the blade | wing material which concerns on embodiment of this invention to a support material. It is a top view which shows a mode at the time of fixing the blade | wing material which concerns on embodiment of this invention to a support material. It is a top view which shows the mode of the projection part of a support material at the time of fixing the blade | wing material which concerns on embodiment of this invention to a support material. It is a top view which shows the mode of the protrusion part of a support material after fixing the blade | wing material which concerns on embodiment of this invention to a support material. It is a perspective view which shows the mode after fixing the blade | wing material which concerns on embodiment of this invention to a support material. It is a top view which shows the mode after fixing the blade | wing material which concerns on embodiment of this invention to a support material. It is sectional drawing in the AA arrow of FIG. 2 of the drying apparatus which concerns on embodiment of this invention. It is sectional drawing which shows the mode of the space in a case by partial omission of the case which concerns on embodiment of this invention. It is sectional drawing which shows the flow of the air in a case by partial omission of the case which concerns on embodiment of this invention. The perspective view of an example which showed that the enlargement of the width | variety of the sirocco fan of the structure which has the conventional two blower outlets is caused. 20 is an exploded perspective view of FIG. 21 is an exploded perspective view of the superstructure of FIG.

  Hereinafter, a drying apparatus 1 (hereinafter, as an example, a medical device) according to an embodiment of the present invention will be described. In the description, an XYZ coordinate system including an X axis, a Y axis, and a Z axis that are orthogonal to each other is used. In the present embodiment, the XY plane parallel to the X axis and the Y axis is a horizontal plane, and the Z axis is an axis parallel to the vertical axis.

  The drying device 1 is a device used for drying a medical knife. As illustrated in FIGS. 1 and 2, the drying device 1 includes the blower 3 on the top plate of the box-shaped case 20. The blower 3 includes a motor 10 having an output shaft facing the case 20 and an impeller 30 provided on the output shaft. A knife shelf 2 is installed below the inside of the case 20, and a plurality of equipment such as a medical knife is placed on the knife shelf 2. As other usage applications, the blower 3 and the impeller 30 of the present invention can be used for a blower for a high-temperature blower, a blower for heating / cooling food / foodstuffs, a large-capacity blower, or the like.

  The impeller 30 is made of metal, for example. The impeller 30 is provided inside the case 20. The rotation of the impeller 30 allows air to flow. As shown in FIG. 3, the impeller 30 includes a first face plate 40 (first lower frame), a second face plate 60 (second lower frame) provided at a distance from the first face plate 40, and A support member 50 provided between the first face plate 40 and the second face plate 60, and a plurality of blade members 70 supported by the first face plate 40, the second face plate 60, and the support member 50 are provided. The impeller 30 rotates counterclockwise as viewed from the + Z side. Hereinafter, the direction in which the impeller 30 rotates is referred to as “rotational direction B”.

  The blade member 70 is a plate-like member in which sides in the X direction (short direction) are formed in an arc shape.

  As shown in FIG. 4, at least two convex portions 74 and 73 are formed on the upper edge of the blade member 70 in order toward the + X direction (so as to protrude from the upper edge). Since the base part of the convex parts 73 and 74 is thinner than the upper part of the convex parts 73 and 74 (it is constricted, thin shape, slit process, etc.), bending strength is weak. Accordingly, when the upper portions of the convex portions 73 and 74 receive a force, the convex portions 73 and 74 bend from the root portion.

  At least two convex portions 76 and 75 are formed on the lower edge of the blade member 70 in order toward the + X direction (so as to protrude from the lower edge). Since the root part of the convex parts 75 and 76 is thinner than the lower part of the convex parts 75 and 76 (bending, thin shape, slit process, etc.), bending strength is weak. Accordingly, when the lower portions of the convex portions 75 and 76 receive a force, the convex portions 75 and 76 bend from the root portion.

  On the outer edge of the blade member 70 on the + X side (right side in the short direction), a stepped triangular center-side notch 71 is formed slightly above the center. Further, a triangular outer peripheral side notch 72 is formed on the outer edge of the blade member 70 on the −X side, slightly above the center. The positions of the center side cutout 71 and the outer peripheral side cutout 72 in the Z-axis direction are the same. The center-side cutout 71 and the outer peripheral-side cutout 72 are cutouts converged from the outer edge of the blade member 70 toward the facing direction (inward and toward the center, respectively).

  As shown in FIG. 5, the first face plate 40 is a circular member, and a circular opening 41 is formed at the center of the first face plate 40. The first face plate 40 has a plurality of through holes 42 along the outer edge. The through hole 42 is a penetrating arc-shaped hole. The protrusions 73 and 74 of the blade member 70 are inserted into the through hole 42.

  As shown in FIG. 6, the support member 50 is a circular member, and a through hole 54 a is formed at the center of the support member 50. Four through holes 54b are formed around the through hole 54a. Further, on the outer peripheral surface 50a of the support member 50, an arc-shaped slit 52 projecting in the rotation direction B having different widths from the outer edge toward the center (the entrance is wide and narrows sequentially), and a slit 52 are provided so as to be adjacent to the outer peripheral edge, and are substantially alternately formed with notches 53 each having a substantially chevron shape whose width decreases from the outer edge toward the center.

  As shown in FIG. 7, two semicircular convex portions 56 and 55 are formed on the inner wall surface 58 on the side opposite to the rotation direction B in order toward the central portion. The convex portions 55 and 56 protrude toward the inner wall surface 57 on the rotation direction B side. The distance between the tips of the convex portions 55 and 56 and the inner wall surface 57 is slightly narrower than the thickness of the blade member 70.

  A plurality of slits 52 and a plurality of notches 53 are alternately formed on the outer peripheral surface 50 a of the support member 50, and a bendable outer peripheral projection between each of the slits 52 and the notches 53. 51 is formed. The outer peripheral projection 51 is plastically deformed by applying a force to the inner wall surface 59 of the notch 53. As a result, the width of the entrance of the slit 52 is narrowed.

  As shown in FIG. 8, the second face plate 60 has the same shape and the same member as the first face plate 40, and an opening 61 is formed at the center of the second face plate 60. A plurality of through holes 62 are formed in the second face plate 60 along the outer edge. The opening 61 and the through hole 62 have the same structure and function as the opening 41 and the through hole 42 of the first face plate 40, respectively.

  Next, a method for manufacturing the impeller 30 will be described.

  As shown in FIG. 8, the notch 71 on the center portion side of the blade member 70 is inserted into the slit 52 of the support member 50. For example, the blade member 70 is inserted from the opening of the slit 52 toward the innermost part until the innermost part of the notch 71 on the center side abuts the innermost part of the slit 52. When inserting the blade member 70, as shown in FIG. 7, in order to facilitate insertion of the blade member 70 into the slit 52, the projecting portions 55 and 56 projecting from the slit 52 are semicircular. Yes.

  Next, similarly, the other blade members 70 are sequentially inserted into the slits 52, and the insertion operation of all the blade members 70 is completed.

  Next, as shown in FIG. 9, the protrusions 73 and 74 are formed by fitting the through holes 42 of the first face plate 40 on the protrusions 73 and 74 of the blade member 70 inserted into the support member 50. In addition to being inserted into the through hole 42, it protrudes from the upper surface of the first face plate 40.

  As shown in FIG. 10, the tip portions of the convex portions 73 and 74 protruding from the upper surface of the first face plate 40 are bent along the upper surface of the first face plate 40. More specifically, the convex portion 73 is bent in the rotation direction B, and the convex portion 74 is bent in the direction opposite to the rotation direction B. Thereby, the blade member 70 does not come off from the first face plate 40.

  Similarly, the tip portions of the convex portions 73 and 74 of the other blade members 70 are sequentially bent along the upper surface of the first face plate 40.

  Similar to the first face plate 40, the projections 75 and 76 of the blade member 70 inserted into the support member 50 are fitted into the through holes 62 of the second face plate 60, thereby omitting the illustration. The portions 75 and 76 are inserted into the through hole 62 and protrude from the upper surface of the second face plate 60.

  Next, similarly to the convex portions 73 and 74 protruding from the upper surface of the first face plate 40, the tip portions of the convex portions 75 and 76 protruding from the lower surface of the second face plate 60 are bent until they become horizontal. More specifically, the convex portion 75 is bent in the rotation direction B, and the convex portion 76 is bent in the direction opposite to the rotation direction B. Thereby, the blade member 70 does not come off from the second face plate 60.

  Similarly, the tip portions of the convex portions 75 and 76 of the other blade member 70 are also bent along the lower surface of the second face plate 60.

  Next, as shown in FIGS. 11 and 12, the outer peripheral protrusion 51 is bent toward the blade member 70 to close the entrance of the slit 52. For example, as shown in FIGS. 13 and 14, by applying a force to the inner wall surface 59, the outer peripheral protrusion 51 is bent until the outer peripheral protrusion 51 enters the outer peripheral side notch 72 of the blade member 70. That is, the outer peripheral projection 51 is bent in the direction opposite to the rotation direction B. As shown in FIGS. 15 and 16, the blade member 70 has a shape along the shape of the inner wall surface 57. For this reason, the blade member 70 is pressed against the entire surface of the inner wall surface 57 facing the inner wall surface 58 by the convex portions 55 and 56. Accordingly, the blade member 70 is fixed to the support member 50.

  Similarly, the other outer peripheral projection 51 is bent toward the blade member 70.

  The blade member 70, the first face plate 40, the support member 50, and the second face plate 60 are integrated by the above operation.

  Returning to FIG. 2, the motor 10 is an AC (Alternating Current) motor provided on the upper side of the case 20. The motor 10 is provided on the upper portion (+ Z side) of the case 20. The motor 10 has a terminal box 11 and a shaft 12. A power supply line from the commercial power supply system is connected to a winding of the motor 10 via a terminal inside the terminal box 11.

  The tip of the shaft 12 penetrates the top plate of the case 20 from the outside to the inside. An impeller 30 is fixed to the distal end portion of the shaft 12 via the hub 13.

  The hub 13 is a substantially cylindrical member. A recess is formed in the Z-axis direction at the center of the upper surface of the hub 13, and the tip of the shaft 12 is inserted to the back of the recess. A through hole through which the screw 15 passes is formed in the Z-axis direction at the center of the bottom surface of the recess of the hub 13. Further, around the through hole, four screw holes into which the screw 16 is fitted are formed from the lower surface toward the + Z side. Further, as shown in FIG. 17, a notch is formed in the inner periphery of the hub 13 on the + Y side, and the engaging member 17 is engaged with the notch. The engagement member 17 is a rectangular parallelepiped member. A support member 50 is provided below the hub 13.

  A screw hole into which the screw 15 is fitted is formed at the tip of the shaft 12. A notch is formed in the outer periphery of the tip end portion of the shaft 12 on the + Y side, and the engaging member 17 is engaged with the notch. As a result, the hub 13 rotates as the shaft 12 rotates.

  The disc 14 is a circular member. The disc 14 is provided below the support member 50. As shown in FIG. 2, a through hole through which the screw 15 passes is formed at the center of the disk 14. Four through holes through which the screws 16 pass are formed around the center of the disk 14.

  Since the screw 16 is fitted into the screw hole of the hub 13 through the four through holes of the disk 14 and the through holes 54b of the support member 50, the disk 14, the support member 50, and the hub 13 are fixed. ing.

  Since the screw 15 is fitted into the screw hole at the tip of the shaft 12 through the through hole at the center of the disk 14, the through hole 54 a of the support member 50, and the through hole at the center of the bottom surface of the hub 13, 14, the support member 50, the hub 13 and the shaft 12 are fixed.

  The case 20 is a hollow housing. The case 20 includes a suction part 20a having a hollow structure and a case body 20b. The suction part 20a is provided on the upper side of the case body 20b. For example, a flat partition plate 23a is provided at a portion separating the suction portion 20a and the case main body 20b. A circular opening 21b is formed in the partition plate 23a. The hub 13 is located at the center of the opening 21b. The first face plate 40 is located immediately below the opening 21b.

  As shown in FIGS. 2 and 17, the suction portion 20a includes a hollow cylindrical portion 26 having a bottom surface slightly larger than the impeller 30, and a hollow cylindrical portion 27 protruding upward from the cylindrical portion 26. Have As shown in FIG. 18, a space 24 b is formed inside the cylindrical portion 26. A space 24 a is formed inside the cylindrical portion 27. The shaft 12 of the motor 10 penetrates the top plate of the column of the column part 26. On the upper side of the cylindrical portion 27, an opening 21 a for allowing air outside the case 20 to move into the case 20 is formed. Since the opening 21a has an air filter, dust, dust, and the like are removed from the air moving into the case 20.

  The case body 20b has a rectangular parallelepiped shape. A cylindrical partition plate 23b is formed in the case main body 20b from the lower surface of the case main body 20b to directly below the impeller 30 in order to separate the space. An opening 21c is formed at the upper edge of the partition plate 23b. In addition, a plurality of side surface through holes 25 are formed on the side surface of the partition plate 23b. A space 24e is formed inside the partition plate 23b. A space 24c is formed around the impeller 30 and the partition plate 23b.

  Inside the impeller 30, a space 24 f is formed on the upper side, and a space 24 g is formed on the lower side, with the support member 50 interposed therebetween.

  Next, an example of an air flow will be described with reference to FIG. 19 in which equipment is arranged inside the case 20 of the drying apparatus 1.

  First, when the power of the drying apparatus 1 is turned on, the shaft 12 of the motor 10 rotates and the impeller 30 provided on the shaft 12 rotates. As the impeller 30 rotates, an air flow is generated inside the case 20. Outside air flows through the opening 21a to the -Z side and enters the space 24a. The air that has entered the space 24a flows to the −Z side and enters the space 24b. The air in the space 24b is guided to the partition plate 23a, passes through the opening 21b of the case 20 and the opening 41 of the impeller 30, and enters the space 24f. The air that has entered the space 24f flows in the radial direction toward the outside of the impeller 30, and enters the annular space 24c. The air that has entered the space 24c flows downward, and then passes through the side surface through hole 25 of the partition plate 23b and enters the space 24e. The air that has entered the space 24e flows upward and then passes through the opening 61 of the impeller 30 and enters the space 24g. When the air entering the space 24e flows upward, the air flows so as to lick the female shelf 2, so that the medical scalpel placed on the female shelf 2 is dried. The air that has entered the space 24g flows radially outward from the impeller 30 and enters the space 24c. Thereafter, the air that has entered the space 24c flows again into the spaces 24e and 24g, thereby circulating inside the case 20. In addition, although illustration is abbreviate | omitted, dust, dust, etc. are removed from the external air which flows in into the case 20 with the filter with which the opening part 21a was equipped. For this reason, the medical knife can be dried in an environment in which bacteria or the like hardly propagate.

  As described above, the impeller 30 includes the support member 50 and the plurality of blade members 70. The support member 50 is provided with slits 52 and notches 53 alternately. A plurality of outer peripheral protrusions 51 are formed between the slit 52 and the notch 53. For this reason, by inserting the blade member 70 into the slit 52 and bending the pair of outer peripheral projections 51 in the opposite direction, for example, by plastic deformation (caulking) of the outer peripheral projection 51, respectively, the support member 50 and the blade member 70 can be fixed without welding.

  The blade member 70 is provided with an outer peripheral side notch 72 on the outer edge side of the blade member 70. The support member 50 and the blade member 70 can be fixed by bending the outer peripheral protrusion 51 into the outer peripheral side notch 72.

  Further, the blade member 70 is provided with a center-side notch 71 on the center side of the support member 50. The support member 50 and the blade member 70 are temporarily fixed by inserting the blade member 70 into the slit 52 so that the notch 71 on the center side abuts against the innermost part of the slit 52.

  In addition, convex portions 55 and 56 projecting toward the inner wall surface 57 are formed on the inner wall surface 58 of the slit 52. Thus, when the blade member 70 is inserted into the slit 52, the blade member 70 is pressed against the inner wall surface 57 facing the inner wall surface 58 by the convex portions 55 and 56, and the support member 50 and the blade member 70 are temporarily connected. Fixed. After the temporary fixing, as described above, the support member 50 and the blade member 70 can be fixed by bending the outer periphery protrusion 51 into the outer peripheral side notch 72, and the support plate 50, the blade member The chatter noise (due to rotation) generated between the blade member 70 and the blade member 70 can be prevented.

  Further, a through hole 42 is formed in the first face plate 40. Convex portions 73 and 74 are formed on the upper edge of the blade member 70. Thereby, the convex portions 73 and 74 are loosely fitted in the through hole 42, and the convex portions 73 and 74 are bent along the plate surface of the first face plate 40. For example, the first face plate 40 and the blade member 70 can be fixed by bending the convex portion 73 in the rotational direction B and bending the convex portion 74 in the direction opposite to the rotational direction B. Further, chatter noise generated between the first face plate 40 and the blade member 70 can be eliminated, and the blade member 70 can be prevented from rattling.

  The second face plate 60 is formed with a through hole 62. Convex portions 75 and 76 are formed on the lower edge of the blade member 70. Thereby, the convex portions 75 and 76 are loosely fitted in the through hole 62, and the convex portions 75 and 76 are bent along the plate surface of the second face plate 60. For example, the second face plate 60 and the blade member 70 can be fixed by bending the convex portion 75 in the rotational direction B and bending the convex portion 76 in the direction opposite to the rotational direction B. In addition, chatter noise generated between the second face plate 60 and the blade member 70 can be eliminated, and the blade member 70 can be prevented from rattling.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by the said embodiment. For example, the following modifications can be made.

  Since the number of the blade members 70 according to the embodiment is arbitrary, it can be appropriately increased or decreased according to the intended use.

  Convex portions 73 and 74 were formed on the upper edge of the blade member 70 according to the above embodiment. It is not limited to this, The number of convex parts is arbitrary. For example, only the convex portion 73 may be formed on the upper edge of the blade member 50.

  Convex portions 55 and 56 were formed on the inner wall surface 58 of the slit 52 according to the above embodiment. It is not limited to this, The number of convex parts is arbitrary. For example, only the convex portion 55 may be formed on the inner wall surface 58.

  The bending operation | work of the front-end | tip part of the convex parts 73, 74, 75, 76 of the blade | wing material 70 which concerns on the said embodiment is not limited to this. For example, an annular jig or the like may be used to fold all the convex portions to be bent in one direction and the other direction once or by dividing. For example, using a jig, the convex portion 73 may be bent at once in the rotational direction B, and then the convex portion 74 may be bent at a time in the direction opposite to the rotational direction B. Alternatively, after all of the convex portions 73, 74, 75, and 76 are bent by a predetermined angle, the blade member 70 may be compressed in the Z-axis direction using a press machine. The convex portions 73, 74, 75, and 76 are bent along the upper surface of the first face plate 40 and the lower surface of the second face plate 60.

  As shown in FIG. 3 (for example, a two-way air outlet of the heat pump), the support member 50 according to the above embodiment is provided slightly above the first face plate 40 and the second face plate 60. , Not limited. For example, the support member 50 may be provided at an intermediate position between the first face plate 40 and the second face plate 60.

DESCRIPTION OF SYMBOLS 1 Drying apparatus 2 Female shelf 3 Blower 10 Motor 11 Terminal box 12 Shaft 13 Hub 14 Disk 15, 16 Screw 17 Engagement member 20 Case 20a Suction part 20b Case main body 21a, 21b, 21c Opening part 23a, 23b Partition plate 24a, 24b, 24c, 24e, 24f, 24g Space 25 Side through hole 26, 27 Cylindrical part 30 Impeller 40 First face plate 41 Opening part 42 Through hole 50 Support material 50a Outer peripheral surface 51 Outer peripheral projection 52 Slit 53 Notch 54a, 54b Through hole 55, 56 Protruding portion 57, 58, 59 Internal wall surface 60 Second face plate 61 Opening portion 62 Through hole 70 Blade material 71 Center side notch 72 Outer periphery side notch 73, 74, 75, 76 Convex portion

Claims (8)

In an impeller of a sirocco fan that is rotatably provided in the blower,
A disk-shaped support material provided with a disk-shaped pair of first face plate and second face plate, interposed between the first face plate and the second face plate, and partitioning the first face plate and the second face plate When,
In this support plate, slits and cutouts provided alternately from the outer edge toward the inner edge, and
Blade members arranged at equal intervals in the circumferential direction of the first face plate and the second face plate;
With
A plurality of outer peripheral protrusions are formed between the slit and the notch,
The impeller is fixed to the slit by utilizing plastic deformation of the outer peripheral protrusion. The outer peripheral projection is bent toward the blade material,
The impeller according to claim 1. The blade member is provided with an outer edge side notch on the outer edge side of the support material,
The outer edge side notch is engaged with the outer peripheral protrusion of the support material,
The impeller according to claim 2 characterized by things. The blade member is provided with a center side notch on the center side of the support material,
The center part side notch is in contact with the innermost part of the slit,
The impeller according to any one of claims 1 to 3, wherein On one wall surface inside the slit, a convex portion protruding toward the other wall surface is formed,
The impeller according to any one of claims 1 to 4, wherein the impeller is characterized. In the first face plate, a plurality of through holes are formed along an outer edge portion,
At least one of a first convex portion and a second convex portion, which is inserted into the through hole of the first face plate at one end of the blade member, and whose tip is bent along the surface of the first face plate. Is formed,
When the first convex portion and the second convex portion are formed at one end of the blade material, the second convex portion is bent in a direction opposite to the first convex portion,
The impeller according to any one of claims 1 to 5, wherein In the second face plate, a plurality of through holes are formed along the outer edge portion,
The other end of the blade member is inserted into the through hole of the second face plate, and at least a third convex portion and a fourth convex portion whose tip portion is bent along the surface of the second face plate. One is formed,
When the third convex portion and the fourth convex portion are formed on the other end of the blade material, the fourth convex portion is bent in a direction opposite to the third convex portion,
The impeller according to claim 6. A motor,
The impeller according to any one of claims 1 to 7, which is attached to a rotation shaft of the motor;
A blower characterized by comprising:

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