JPH0626492A - Impeller of horizontal flow air blower and manufacture thereof and impeller plate material for impeller - Google Patents

Abstract

PURPOSE:To shorten the manufacture times of the impeller and the blade of a horizontal flow air blower, eliminate any looseness in a calking part, and improve accuracy of the inclining angle of the blade in relation to an axial core so as to improve noise and wind amount capacity. CONSTITUTION:An impeller consists on its outer circumference end 9, of a partition board 8 having holding projection parts 10 serving as holding means and an impeller plate materiel 2 having angular holes serving as locking means which are engagingly locked with the holding projection parts 10 of the partition board 8, and a plurality of blades 3 which are inclined by a prescribed angle in the same direction in relation the axial core and the impeller plate meterial 2 is wound along the outer circumference part of the partition board 8, and brought in calking contact with it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impeller of a cross-flow fan used in a cross-flow fan, the flow of which crosses in a diametrical direction, a method for manufacturing the same, and a blade plate material for an impeller.

[0002]

2. Description of the Related Art As a conventional impeller of a cross flow fan of this type, for example, a technique disclosed in Japanese Utility Model Laid-Open No. 56-2092 can be cited. FIG. 8 is a partially cutaway perspective view showing an assembling procedure of blades of an impeller in a conventional crossflow fan, and FIG. 9 is a partially cutaway perspective view showing a state after assembling the blades of the impeller of FIG. 10 is a partially cutaway perspective view showing a state in which the impeller of FIG. 9 is twisted at a predetermined angle with respect to the shaft center.

In the figure, 31 is a cylindrical impeller, and 32 is
Is a blade made of an aluminum plate, a zinc steel plate, or the like having an arcuate cross section, and is provided with slits 34 formed at the peripheral ends of a hollow disk-shaped partition plate 33 located at a predetermined distance at both ends of the impeller 31 and its intermediate part. It is the one that is inserted and retained in.
Further, the blade 32 is provided with a locking notch 35 on the inner side and a notch 36 for caulking on the outer peripheral side at positions corresponding to the partition plate 33 so as to be locked in the slits 34 of the partition plate 33.

In order to assemble the impeller 31 constructed as described above, first, the partition plates 32 at both ends of the impeller 31 and in the middle thereof are arranged at a predetermined interval and the slits 34 of the partition plate 33 are arranged.
Insert the blade 32 into the blade (Fig. 8) and attach it to the blade 32.
To form a cylindrical impeller 31. Then, a roller or the like is pressed against the outer periphery of the partition plate 33 to crush the end face thereof, and the caulking notch portion 36 of the blade 32 is caulked to hold and fix the blade 32 (FIG. 9). Furthermore, the L side of the impeller 31 is held using a jig or the like, the R side is rotated in the direction of the arrow and twisted, and is tilted at a constant angle θ with respect to the axis to reduce noise during blowing. ing.

Here, the twist is applied to the air passing through the blade 32 constituting the impeller 31 when the blade 32 is attached in a state parallel to the axis as shown in FIG. Flow interferes with a stabilizer (not shown) mounted in front of the impeller 31 in close proximity to generate a whistle with a high sound pressure level in phase at a frequency of (rotation speed) × (blade number). The reason for this is that the sound pressure level of the whistle sound is lowered by inclining the blade 32 at a predetermined angle with respect to the axis and shifting the phase, because it significantly impairs hearing.

[0006]

However, since the conventional impeller 31 is formed as described above, the partition plate 33 is used.
Since it is necessary to insert a large number of blades 32, it takes time to manufacture the blades 32, and it takes a long time to assemble the impeller 31, resulting in a high manufacturing cost. Further, since the caulked impeller 31 is twisted in the circumferential direction to form the predetermined angle θ, the caulked portion 3 of the impeller 31 is not formed.
In No. 7, the caulking strength may be reduced, and in some cases, there may be rattling and abnormal noise. Furthermore,
Since the blade 32 made of a metal plate returns due to elasticity, it is difficult to accurately incline by the angle θ, and the angle tends to be unstable. If the inclination angle θ of the blade 32 fluctuates and fluctuates, the noise and the air volume are greatly affected, and the noise and air volume characteristics of the impeller 31 are deteriorated.

Therefore, according to the present invention, the manufacturing time of the blade and the impeller can be shortened, the rattling of the caulking portion can be eliminated, the inclination angle of the blade with respect to the shaft center can be made highly accurate, and the noise and air flow performance can be improved. An object of the present invention is to provide an impeller of a cross flow fan, a method for manufacturing the impeller, and a blade plate material for an impeller.

[0008]

According to a first aspect of the present invention, there is provided an impeller of a cross flow fan, which has a partition plate arranged at predetermined intervals in the axial direction and having a holding means at a peripheral end thereof, and a holding plate for holding the partition plate. Locking means for locking with the means, and a blade plate material having a plurality of blades inclined in the same direction with respect to the shaft center by a predetermined angle and wound around the outer periphery of the partition plate and caulked and joined. Is.

According to a second aspect of the present invention, there is provided a method for manufacturing an impeller of a cross flow fan, comprising a partition plate forming step of forming a partition plate having a holding means at a peripheral end portion, and a step of forming the partition plate on a single flat plate. Locking means for locking with the holding means, a blade plate material forming step of integrally forming a plurality of blades inclined at a predetermined angle in the same direction with respect to the axis, and a plurality of partition plates arranged at predetermined intervals in the axial direction After that, the blade plate material winding step of winding the blade plate material around the outer peripheral portion of the partition plate while locking the blade plate locking means to the partition plate holding means, and at the same time as the blade plate material winding, The plate holding means and the blade plate locking means are caulked and bonded at the locking portion to integrally fix the partition plate and the blade plate material.

Further, the blade plate material of the impeller of the cross flow fan according to the invention of claim 3 is a single flat plate, and a locking means for locking the holding means provided at the peripheral end of the partition plate of the impeller. The blades are integrally formed with a plurality of blades that are inclined in the same direction by a predetermined angle with respect to the axis of the impeller.

[0011]

In the invention of claim 1, since the impeller is constituted by the blade plate material in which a plurality of blades are integrated,
Since the number of parts is reduced and the partition plate is provided with the holding means and the blade plate material is provided with the locking means, and these are locked, it is possible to assemble the impeller with high accuracy and to maintain a stable state. Can hold Furthermore, since the blade is preliminarily formed integrally with the blade plate by inclining the blade in a certain direction with respect to the axial center by a predetermined angle, it is not necessary to perform a twisting process in a later step, and the inclination angle is formed with high accuracy. And can be maintained.

According to the second aspect of the present invention, after the plurality of partition plates are arranged at a predetermined interval, the blades are provided on the outer peripheral portion of the partition plate while the retaining means of the partition plate is engaged with the locking means of the blade plate material. Since the plate material can be assembled by a simple process of winding and caulking at the locking portions, the manufacturing time of the impeller is shortened.

Further, in the third aspect of the invention, with respect to the single flat plate, with respect to the retaining means provided on the peripheral end of the partition plate of the impeller and the retaining means, and the axial center of the impeller. Since a plurality of blades that are inclined in the same direction by a predetermined angle are integrally formed, the molding time of the blades can be shortened, the number of parts can be reduced, and the cost can be reduced. In addition, handling and management of the parts become easy.

[0014]

【Example】

<First Embodiment> First, a first embodiment of the present invention will be described with reference to FIGS. 1 is a partially cutaway perspective view showing an impeller of a cross flow fan according to a first embodiment of the present invention, FIG. 2 is a vertical sectional view of the impeller of FIG. 1 seen from the left side, and FIG. 3 is an impeller of FIG. FIG. 4 is a front view showing the vane plate material before being assembled, and FIG. 4 is a front view showing the partition plate before assembling the impeller of FIG. 1.

In the figure, 1 is a cylindrical impeller, 2 is an impeller plate material comprising an aluminum plate, a zinc steel plate, etc., which constitutes the impeller 1, and the plate thickness thereof is thinly formed to about 0.3 mm. The state before assembly is a single flat plate.

A plurality of blades 3 are formed on the blade plate member 2 vertically and horizontally in a state of being inclined at a predetermined angle θ in a certain direction with respect to the axis of the impeller 1. The blades 3 are formed. It is formed by cutting and raising the substantially U-shaped pattern shown by the line 4 with a pressing device or the like. The line 4 formed in a substantially U-shape that forms the blade 3 has the ends of the side lines 5 on both sides thereof close to another line 4 vertically adjacent to each other, and the interval 6 is shortened to reduce wind pressure loss. Has been reduced. In this embodiment, the gap 6 is narrowed to about 3.5 mm, and the blade plate material 2 is made extremely thin to about 0.3 mm, so that the wind pressure loss can be made extremely small and the blade 3
Can withstand pressures of the order of 20 kg. Reference numeral 7 is a square hole which is formed between the left and right blades 3 at predetermined intervals in the vertical direction and serves as a locking means for locking a holding means provided on a partition plate described later. The square hole 7 serving as a locking means of the blade plate member 2 reduces the attachment strength of the blade plate member 2 and the wind pressure loss. It is desirable that no gap be formed between the part 10 and the part 10.

Reference numeral 8 denotes a partition plate made of a hollow disc-shaped metal plate, and holding projections 10 are formed on a peripheral end 9 thereof at positions corresponding to the square holes 7 at predetermined intervals along the circumferential direction. ing. Reference numeral 11 denotes a crimped portion obtained by crushing the holding convex portion 10, and fixes the blade plate member 2 to the partition plate 8. 12 is a blade material 2
It is a boundary portion created by both the winding start and both ends after winding.

Next, a method for manufacturing the impeller 1 configured as described above will be described. FIG. 5: is explanatory drawing which shows the method of assembling the impeller of the cross flow fan of the Example of this invention. In the figure, 21 is a caulking roller, and 22 and 23 are feed rollers.

In order to assemble the impeller 1 using the blade plate material 2 and the partition plate 8, first, the blade plate material 2 and the partition plate 8 are formed by press working, and then the partition plate 8 is attached to the impeller wheel. The holding projections 10 are arranged at both ends of the blade 1 and in the middle thereof so that the holding projections 10 can be engaged with the square holes 7 of the blade plate material 2, and the square holes 7 on the tip side of the blade board material 2 are held by the holding projection portions of the blade plate material 2. 10
To be locked. After that, the partition plate 8 is rotated in the direction of the arrow by rotating the feed roller 22 and the feed roller 23, and at the same time, while the caulking roller 21 is rotated, the partition mechanism 8 is pressed by the punch mechanism of the partition roller 8 to hold the convex portion. Squeeze 10 and crimp part 1 larger than square hole 7
1 is formed, and the blade member 2 is wound around the outer peripheral portion of the partition plate 8 and joined. Then, when the impeller 1 makes one rotation, the caulking of all parts is completed, and the impeller 1 is completed.
Since the blade 3 of the completed impeller 1 is already inclined by the predetermined angle θ with respect to the shaft center in the state where the blade plate material 2 is a single piece, it is not necessary to perform twisting again after the completion of the caulking.

As described above, the impeller of the cross flow fan of the above-described embodiment engages with the partition plate 8 having the holding projection 10 as the holding means at the peripheral end 9 and the holding projection 10 of the partition plate 8. It is composed of a square hole 7 as a locking means, and a blade plate member 2 having a plurality of blades 3 tilted in the same direction by a predetermined angle θ with respect to the axis, and the blade plate member 2 is attached to the outer peripheral portion of the partition plate 8. It is wound around and crimped and joined.

Therefore, according to the above-mentioned embodiment, since the impeller 1 is constituted by the blade plate material 2 in which a plurality of blades 3 are integrated, a large number of connected blades 3 can be formed by a single press working. The molding time of the blade 3 can be shortened and the blades 3 can be assembled at once. And
The number of parts is reduced, the parts cost can be reduced, and the parts can be easily handled and managed. In addition, the retaining projection 1 is attached to the partition plate 8.
No. 0 and the square hole 7 is provided in the blade plate member 2 and these are locked, so that the impeller 1 can be assembled with high precision and can be held in a stable state without rattling. Furthermore, since the plane portions between the upper and lower square holes 7 are wound in surface contact with each other at the position corresponding to the peripheral edge 9 of the partition plate 8, the partition plate 8 can hold the blade plate material 2 very well.
In addition, since the blade plate material 2 is integrally formed in advance by inclining the blade 3 at a predetermined angle θ with respect to the axial center in advance, it is not necessary to perform a twisting process in a later step, and the twisting process is not necessary. It is possible to prevent rattling due to processing, prevent deterioration of the caulking strength, and increase the accuracy of the inclination angle θ.

Further, in the method for manufacturing the impeller of the cross flow fan of the above-mentioned embodiment, the partition plate forming step of forming the partition plate 8 having the holding convex portion 10 at the peripheral edge 9 and the partition plate 8 on the single flat plate.
Of the holding convex portion 10 and the blade plate forming step of integrally forming a plurality of blades 3 which are inclined by a predetermined angle θ in the same direction with respect to the shaft center, and a plurality of partitions. After arranging the plates 8 at predetermined intervals in the axial direction, the blades that wind the blade plate material 2 around the outer peripheral portion of the partition plate 8 while locking the square holes 7 of the blade plate material 2 in the holding projections 10 of the partition plate 8. Simultaneously with the step of winding the plate material and the winding of the blade plate material 2, the holding projection 10 of the partition plate 8 and the square hole 7 of the blade plate material 2 are caulked and joined at the locking portion, and the partition plate 8 and the blade plate material 2 are joined together. And a joining step of fixing them together.

Therefore, according to the above-mentioned manufacturing method, after the plurality of partition plates 8 are arranged at the predetermined intervals, the partition plate 8 is locked while the holding projections 10 of the partition plate 8 are engaged with the square holes 7 of the blade plate material 2. Since the blade plate material 2 can be wound around the outer peripheral portion of 8 and can be assembled by a simple process of just caulking at these locking portions, the manufacturing time of the impeller 1 can be greatly shortened.

<Second Embodiment> In the first embodiment, the partition plate 8 is used.
Although the blade plate material 2 to be wound around is shown to be composed of one sheet, it may be a plurality of sheets. FIG. 6 is a longitudinal cross-sectional view of a main part showing an arrangement state of blades in an impeller of a cross flow fan according to a second embodiment of the present invention.

In the figure, 2a is the first blade plate material, 3a is a blade formed on the blade plate material 2a,
Reference numeral b is a second blade plate material wound around the outer peripheral side of the first blade plate material 2a, and 3b is a blade formed on the blade plate material 2b. The vane plate material 2a and the vane plate material 2b are formed with elongated holes in which the blade of the other vane plate material can be inserted between adjacent blades, and the blade 3b of the second vane plate material 2b is the first blade. When the impeller 1 is completed by being inserted between the blades 3a of the blade plate material 2a, the blades 3a and 3b are positioned in an interlaced state, and the distance between the blades 3a and 3b is the same as in the first embodiment. It becomes equal to the interval between the blades 2.

That is, (the number of blades) × (the width of the blade (the arc length)) is always limited to the width of the blade plate material (the length around which it is wound around the partition plate 8), so that it is desirable to use only one blade plate material. In some cases, it is not possible to set the blades having the same number and width, and in this case, for example, as in the present embodiment, it is possible to deal with the problem by shifting two blade plates by the distance between the blades and wrapping them around the partition plate 8. It is possible to set the optimum number and width of blades.

The above-mentioned two blade plates 2a and 2b
The impeller 1 can be assembled by using the caulking roller 21, the feed roller 22 and the feed roller 23 in the same manner as in the first embodiment. However, the caulking roller 21 uses the partition plate 8 for the first blade plate member 2a.
It is preferable that the holding convex portion 10 is not crimped when the second blade plate member 2b is overlapped and wound, instead of being crimped when it is wound.

When forming the impeller 1, if the shape of the blade 3b of the second blade plate member 2b is set to be slightly smaller than the blade 3a of the first blade plate member 2a, the blade 3b will be installed later. The operation of inserting between the blades 3a becomes easy. Further, the square hole (not shown) formed in the second blade plate material 2b and engaging with the holding convex portion 10 of the partition plate 8 is
The blade 3b of the second blade plate material 2b may be set so as to be positioned between the blades 2a of the adjacent first blade plate materials 2a, and only the dimension of the interval 13 to the middle of the adjacent blades 2a, It may be formed by being vertically displaced from a square hole (not shown) of the blade member 2a.

<Third Embodiment> Next, a third embodiment will be described. In the third embodiment, a plurality of (two) blade plate members 2a and 2b of the second embodiment are integrally formed into a flat blade plate member so as to be connected in the winding direction. FIG. 7 is a longitudinal cross-sectional view of a main part showing an arrangement state of blades in an impeller of a cross flow fan according to a third embodiment of the present invention.

In the figure, an elongated single blade plate material 2
In order to optimally design the width of the blade c, the winding length around the partition plate 8 shown in FIG. 4 is set to an integer multiple of the outer circumference of the partition plate 8, for example, twice, and as in the second embodiment, The blade 3d on the second lap is positioned between the blades 3c on the first lap wound around the partition plate 8. Also in this case,
The winding of the blade plate material 2c around the partition plate 8 may be performed by the manufacturing method of the first embodiment. However, in the first winding of the blade plate material 2c around the partition plate 8, the holding projection 10 is not crimped,
It can be fixed by crimping from the time when the second lap is started to be wound.

By the way, the blade plate locking means of each of the above-described embodiments is provided with the square hole 7 at a position corresponding to the holding convex portion 10 of the partition plate 8, and the holding means of the partition plate 8 is the holding convex portion. 10
However, when the present invention is carried out, the present invention is not limited to this. For example, when pressing the blade plate material, the blade plate locking means is formed as a hook-shaped cut-and-raised piece, and the partition plate is formed. 8 may be locked to the holding convex portion 10 of the blade 8. In short, any material may be used as long as the blade plate material can be locked and held to the partition plate 8. Further, the holding means of the partition plate 8 may be provided at the peripheral edge in addition to the peripheral end 9, and any means can be used as long as it can be locked by the locking means of the blade plate material.

[0032]

As described above, the impeller of the cross flow fan according to the invention of claim 1 is arranged at a predetermined interval in the axial direction,
The partition plate has a partition plate having a holding means at the peripheral end, a locking means for locking the partition plate holding means, and a plurality of blades inclined at a predetermined angle in the same direction with respect to the axis, And a blade plate material that is wound around the outer peripheral portion and joined by caulking. Therefore, since the vane wheel is composed of the vane plate material in which a plurality of blades are integrated, the number of parts is reduced, and the blade plate material can be assembled at a time, and the blade plate material locking means can be engaged with the partition plate holding means. Since the structure is stopped, the impeller can be assembled accurately and can be held in a stable state. In addition, since the blade is preliminarily formed integrally with the blade plate by inclining the blade at a predetermined angle in a certain direction with respect to the axis, it is not necessary to perform twisting in a later step, and rattling due to twisting is performed. It is possible to prevent the deterioration of the caulking strength and increase the accuracy of the inclination angle.

Further, in the method for manufacturing an impeller according to the second aspect of the present invention, a partition plate forming step of forming a partition plate having a holding means at a peripheral end portion and a step of holding the partition plate on a single flat plate are performed. A locking means for stopping, and a vane plate material forming step of integrally forming a plurality of blades inclined in the same direction by a predetermined angle with respect to the axis, and a plurality of partition plates arranged at predetermined intervals in the axial direction, and then a partition A blade plate material winding step of winding the blade plate material around the outer peripheral portion of the partition plate while locking the blade plate material locking means to the plate holding means, and a partition plate holding means simultaneously with the winding of the blade plate material And the locking means of the blade plate material are caulked and bonded at the locking portion to integrally fix the partition plate and the blade plate material. Therefore, after arranging a plurality of partition plates at a predetermined interval, the blade plate material is wound around the outer peripheral portion of the partition plate while the retaining means of the partition plate is engaged with the retaining means of the blade plate material. Since it can be assembled in a simple process of just caulking, the manufacturing time of the impeller can be greatly shortened.

Further, the blade plate material for an impeller of the third aspect of the present invention is a single flat plate, a locking means for locking with a holding means provided at a peripheral end portion of a partition plate of the impeller, and an impeller of the impeller. A plurality of blades that are inclined in the same direction by a predetermined angle with respect to the axis are integrally formed. Therefore, in particular, the molding time of the blade can be shortened, the number of parts can be reduced, the cost of parts can be reduced, and the handling and management thereof can be facilitated.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an impeller of a cross flow fan according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the impeller of FIG. 1 viewed from the left side.

FIG. 3 is a front view showing a blade plate material before the impeller of FIG. 1 is assembled.

FIG. 4 is a front view showing a partition plate before the impeller of FIG. 1 is assembled.

FIG. 5 is an explanatory view showing a method of assembling the impeller of the cross flow fan according to the embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of an essential part showing an arrangement state of blades in an impeller of a cross flow fan according to a second embodiment of the present invention.

FIG. 7 is a longitudinal cross-sectional view of essential parts showing an arrangement state of blades in an impeller of a cross flow fan according to a third embodiment of the present invention.

FIG. 8 is a partially cutaway perspective view showing an assembling procedure of blades of an impeller in a conventional cross flow fan.

9 is a partially cutaway perspective view showing a state after the blades of the impeller of FIG. 8 are assembled.

FIG. 10 is a partially cutaway perspective view showing a state in which the impeller of FIG. 9 is twisted by a predetermined angle with respect to the shaft center.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Impeller 2, 2a, 2b, 2c Blade plate material 3, 3a, 3b, 3c, 3d Blade 7 Square hole 8 Partition plate 9 Circumferential end 10 Holding convex part 11 Caulking part 21 Caulking roller 22, 23 Feeding roller

Claims (3)

[Claims] 1. A partition plate which is arranged at a predetermined interval in the axial direction and has a holding means at its peripheral end, a locking means for locking the holding means of the partition plate, and the same direction with respect to the shaft core. An impeller of a cross flow fan, comprising: a plurality of blades inclined by a predetermined angle, and a blade plate material wound around the outer peripheral portion of the partition plate and caulked and joined. 2. A partition plate forming step of forming a partition plate having a holding means at a peripheral end portion; a locking means for locking the partition plate holding means on a single flat plate; and a shaft core. After the vane plate material forming step of integrally forming a plurality of blades inclined by a predetermined angle in the same direction and arranging the plurality of partition plates at a predetermined interval in the axial direction,
A blade plate material winding step of winding the blade plate material around the outer periphery of the partition plate while locking the blade plate locking means to the partition plate holding means, and a partition plate holding means simultaneously with the winding of the blade plate material. And a locking means of the blade plate material at the locking portion by caulking and joining, and a joining step of integrally fixing the partition plate and the blade plate material, a method for manufacturing an impeller of a cross flow fan. 3. A single flat plate, locking means for locking with holding means provided on the peripheral end of the partition plate of the impeller, and a plurality of inclining means in the same direction with respect to the axial center of the impeller. A blade plate material for an impeller of a cross-flow fan, characterized in that the blade is integrally formed.