KR101034977B1 - a ventilation-fan for controlling rotor angle and a hub ventilation-fan for controlling rotor angle - Google Patents

Abstract

The present invention relates to a blower fan of an axial blower or a mixed blower used for industrial or marine use. More specifically, the assembly of a rotor blade and a hub is simple, and is assembled to a hub at an early stage even after a long time of use. The present invention relates to a blower fan capable of maintaining the position of a rotor blade and controlling the set angle of the rotor blade so that the angle of the rotor blade can be easily changed according to the purpose of use.

Moreover, this invention relates to the hub used for the blowing fan which can adjust the set angle of the said rotor blade.

Rotor blade, set angle, rotor blade, angle control shaft, hub

Description

Blower fan capable of adjusting the set angle of the rotor and hub of the blower fan capable of adjusting the set angle of the rotor {a ventilation-fan for controlling rotor angle and a hub ventilation-fan for controlling rotor angle}

The present invention relates to a blower fan of an axial blower or a mixed blower used for industrial use or ships. The present invention relates to a blower fan capable of maintaining the position of a rotor blade and controlling the set angle of the rotor blade so that the angle of the rotor blade can be easily changed according to the purpose of use.

Moreover, this invention relates to the hub used for the blowing fan which can adjust the set angle of the said rotor blade.

In general, the coupling method of a rotor blade and a hub which is most commonly used in a blower is used to manufacture a rotor blade and a hub integrally in the case of a small blower having a diameter of 100 mm or less. In the blower of the above size, a rotor blade and a hub are manufactured, and a rotor blade is attached to the hub, and a commonly used mounting method is a screwed bolt at the root of the rotor blade. In this case, the screw thread is inserted into the hub and tightened with a nut. However, in this case, the assembly angle of the rotor blade is changed when the nut portion is loosened with long use.

For example, in the accompanying drawings, Fig. 1 shows the overall structure of a conventional axial flow blower, which transmits the rotational force of the electric motor 4 to the hub 2 via the motor shaft 5, and at the hub 2 The generated rotational force rotates the rotor blade 1 attached to the hub 2 to blow a lot of air to the outlet, but as shown in FIG. 1, the hub 2 is small when the size of the blower is small. ) And the rotor blades (1) can be manufactured and used in one piece.In the case of a small blower, it is used only when household or limited capacity is required. It is produced using plates or plates. Reference numeral 3 in Fig. 1 represents a fixed blade.

 However, in the case of a blower that is generally used for industrial purposes or ships, a blower having a large diameter constitutes the mainstream, and in the case where the blower has a large diameter, it is difficult to manufacture the rotor blade 1 and the hub 2 integrally. Due to the difficulty, the rotor blades 1 and hub 2 are manufactured separately, and the rotor blades 1 are assembled to the hub. If a large blower is used, the blower capacity is used. Since the rotor blade 1 has become larger, the material of the rotor blade 1 cannot be made of plastic, plate, or the like, but is made of aluminum, steel, or the like.

In the case of the rotor blade (1) manufactured as described above, a high centrifugal force and a torsional force are received as the rotational speed increases, so a connection method capable of maintaining sufficient strength is required. As shown in 2a, the root of the rotor blade 1 has a bolt-like structure, and in order to make such a structure, the root bolt of the rotor blade 1 is inserted into a deep part of the rotor blade and cast. (1) generally applies aluminum and bolts are generally made of steel.

A structural diagram in which a rotor bolt blade 1 is mounted to the hub 2 is shown in FIG. 2B. A root bolt is inserted into the rotor mounting hole of the hub 2 so that the washer 8 and the nut are mounted. It is attached to the hub using (9).

On the other hand, when using a rotor bolt (1) in the form of a root bolt, the production of the hub (2) for assembling it is not only necessary to use the root bolt when manufacturing the rotor (1). As shown in FIG. 2B, the hub 2 should be cast into a circular fuselage. When the nut 9 is loosened when used for a long time, the angle of the rotor blade 1 that is initially attached is changed. A problem occurs.

As shown in FIG. 2C, the root portion of the rotor blade 1 is made of the same material as the rotor blade 1 to form a spire root, as shown in FIG. 2C. This is inserted and assembled between the two hub plate 11 as shown in the assembled structure shown in Figure 2d. In this case, the simplification and the assembly of parts are better than the root bolt type rotor 1, but it is easily affected by the torsion acting on the rotor 1 during use. There is a big downside that it doesn't work. Reference numeral 8 in FIG. 2D denotes a washer, and reference numeral 9 denotes a bolt.

The set angle of the rotor blade 1 coupled to the hub 2 has a high effect on performance, and the airfoil appears when viewed from the outer end portion of the rotor blade 1 toward the hub 2 side. The shape of is shown in Fig. 2e, and as shown in Fig. 2e, the performance of the blower varies greatly depending on the set angle of the rotor 1, but in the conventional method of the rotor 1, I) There is a disadvantage in that the setting angle of (1) easily turns. Reference numeral 3 in Fig. 2E denotes a fixed blade.

The present invention forms a rotor blade projecting to the inner end of the rotor blade in the form of a bolt for simplicity of the assembly method, and protruding the moving pin spaced apart from the rotor blade root at the inner end of the rotor blade (moving) In the hub, the rotor blades are formed to rotate so that the rotor blades are rotatable, and the arcs of the movable pins are guided. The angle adjusting device is inserted into the movable pins to form a fixed hole or a fixed groove. Even if the initial setting angle of the rotor blades is not changed, and if the air flow rate is to be changed, simply change the assembly position of the moving pins so that all the rotor blades are set to the same angle. In order to provide a blower fan which is easy to assemble and has high assembly ability, achieves a robust structure, and can accurately set a set angle of a rotor blade.

In addition, the present invention is to provide a hub used for the blowing fan.

The present invention is a rotor blade (110) and the rotor blade (110) spaced apart from the rotor blade root (110) are respectively formed a rotor blade (moving movement (100) protruding from the inner end); Rotating hole 220 is inserted into the circumference to rotate the rotor blades 110 and the rotor blade root 110 is inserted into the rotary hole 220 when the rotating pin 120 is inserted and guided A hub 200 each having an arc-shaped moving hole 210 formed therein; It relates to a blower fan capable of adjusting the set angle of the rotor blades, characterized in that it comprises a.

The present invention may include an angle adjustment shaft 300 is fixed to the inner peripheral surface of the hub 200, the moving pin 120 is inserted and fixed via the moving hole 210, In the present invention, a female screw 231 or a plurality of key grooves 232 are formed on the inner circumferential surface of the hub 200, and a circumferential portion of the hub 200 is provided on the outer circumferential surface of the angle adjustment shaft 300. A male screw 331 corresponding to the female screw 231 or a plurality of keys 332 corresponding to the plurality of key grooves 232 may be formed to be inserted into and fixed to an inner side thereof, and the circumference of the angle adjusting shaft 300 may be formed. The moving pin 120 may be provided with a fixing hole 320 or a fixing groove in which the moving pin 120 is inserted and fixed through the moving hole 210.

In the present invention, the fixing hole 320 or the fixing groove is formed on the same circumference passing through the outer surface of the angle adjustment shaft 300, any fixing hole 320 of the fixing hole 320 or the fixing groove ) Or the fixing groove may be formed at a predetermined distance away from the adjacent fixing hole 320 or the fixing groove, the moving pin 120 is the rotor blade (moving blade) It may be spaced apart in the front direction of the 100, the front end located in the leading edge direction of the rotor blade (moving) 100 of both ends of the hub 200 is open so that the angle adjustment shaft 300 is fitted, An open front end of the hub 200 may be coupled with a flow induction cover 240 to induce the flow of air.

In the present invention, the angle adjustment shaft 300 may be a hollow shaft (hollow) of the hollow, the rotor blade 110 is the rotor blade (moving) 100, the rotor (moving) (100) Protruding to the center of gravity when supporting the inner side of the), the present invention is the rotor blade root 110 so as not to be separated from the rotating hole 210 in the inner peripheral surface of the hub 200 It may include a fastening means 400 is fastened to the rotor blade (110).

On the other hand, in the present invention, the inner surface of the rotor blade (110) and the rotor blades (moving movement) 100, which is formed to protrude at the inner end of the moving pin 120 is spaced apart from the rotor blade root (110) is fastened to the outer surface In the hub 200 of the blowing fan, the rotary hole 210 and the rotor blade root 110 is inserted into the circumferential portion of the hub 200 so that the rotor blade root 110 is rotatable. In the case of rotation is inserted into the circular arc-shaped moving hole 220 which is guided by the moving pin 120 is inserted, each of the male screw 331 or a plurality of keys 332 is formed on the outer surface of the circumference The circumferential inner surface of the hub 200 corresponds to the male screw 331 so that the moving pin 120 is fitted into the fixing hole 320 or the angle adjusting shaft 300 in which the fixing groove is formed. A key groove 232 corresponding to the female screw 231 or the plurality of keys 332 is formed. It relates to a hub for a possible adjustment of the air blowing fan setting angle (動 翼).

According to the present invention, the rotor blade and the moving pin are used to assemble the rotor and the hub, so that the torsional force applied to the rotor during the rotation of the rotor can be well tolerated. There is an advantage that the setting angle does not change.

In the present invention, even when the blower is in use, the angle adjusting device of the rotor blades is assembled in the form of a spline with a key. In the case of a screw type, the set angle of the rotor blade can be changed simply by rotating in the right direction or the left direction. Therefore, the present invention has the advantage of accurately setting the set angle of the rotor blade which has the greatest influence on the performance of the blower, and at the same time, the predetermined angle of the rotor blade is set even if the skilled worker is not skilled. There is an advantage that can be set exactly.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Example 1

Embodiment 1 relates to a blowing fan capable of adjusting a set angle of a rotor blade according to the present invention.

3 is a sectional view of Embodiment 1 installed in a duct, FIG. 4 is a perspective view of a rotor blade of Embodiment 1, FIGS. 5 and 6 are perspective views of a hub of Embodiment 1, FIGS. 7 and 8 Shows a perspective view of the angle adjustment shaft of the first embodiment.

Referring to FIG. 3, Embodiment 1 includes a rotor blade 100, a hub 200, an angle adjustment shaft 300, and a fastening means 400.

3 and 4, the rotor blade root 110 and the moving pin 120 are spaced apart from each other and protruded from the inner end of the rotor blade 100.

3 and 4, the rotor blade root 110 is formed to protrude at the center of gravity when the rotor blade 100 is supported on the inner surface of the rotor blade 100. As shown in FIG. The rotor blade root 110 is formed in the form of a bolt.

3 and 4, the moving pin 120 is spaced apart from the rotor blade root 110 in the direction of the leading edge of the rotor blade 100 to protrude.

3, 5, and 6, the circumferential portion of the hub 200 has a rotating hole 210 through which the rotor blade root 110 is inserted to be rotatable. In addition, in the peripheral portion of the hub 200, the rotor blade root 110 is inserted into the rotary hole 210, when the rotating pin 120 is inserted into the circular arc-shaped moving hole 220 is guided through. Therefore, the moving hole 220 is formed in the shape of an arc centered on the rotating hole 210. Thus, the set angle of the rotor blade is freely adjusted.

Referring to FIG. 5, a female screw 231 may be formed on an inner side surface of the circumference of the hub 200. The front end located in the leading edge direction of the rotor blade 100 of both ends of the hub 200 is formed to be open. Reference numeral 100LE denotes the leading edge of the rotor blade 100, and reference numeral 100TE denotes the trailing edge of the rotor blade 100. The female screw 231 is formed from the front end of the hub 200 toward the rear end of the hub 200.

 Referring to FIG. 6, a plurality of key grooves 232 may be formed on the inner side surface of the hub 200 instead of the female screw 231. The plurality of keyways 232 are formed from the front end of the hub 200 toward the rear end of the hub 200.

Referring to FIG. 7, a male screw 331 corresponding to the female screw 231 may be formed on the outer circumferential surface of the angle adjusting shaft 300. The external thread 331 is for the angle adjusting shaft 300 to be fitted to the inner peripheral surface of the hub 200 to be fixed. In addition, a fixing hole 320 may be formed through the circumferential portion of the angle adjusting shaft 300 or a fixing groove (not shown) may be formed. Fixing hole 320 and the fixing groove (not shown) is for the moving pin 120 to be fitted and fixed via the moving hole 220. Fixing hole 230 or the fixing groove (not shown) is formed on the same circumference passing through the outer surface of the angle adjustment shaft 300, any of the fixing ball 230 or the fixing groove (not shown) The fixing hole 230 or the fixing groove (not shown) is formed at a point away from the adjacent fixing hole 230 or the fixing groove (not shown) by a predetermined distance. That is, the distance between the adjacent fixing hole 230 or the fixing groove (not shown) are all the same.

Referring to FIG. 8, a plurality of keys 332 corresponding to the plurality of key grooves 232 may be formed on the outer circumferential surface of the angle adjusting shaft 300. The plurality of keys 332 are for the angle adjusting shaft 300 to be fitted to the inner peripheral surface of the hub 200 to be fixed. In addition, a fixing hole 320 may be formed through the circumferential portion of the angle adjusting shaft 300 or a fixing groove (not shown) may be formed. Fixing hole 320 and the fixing groove (not shown) is for the moving pin 120 to be fitted and fixed via the moving hole 220. As shown in Figure 7, the fixing hole 230 or the fixing groove (not shown) is formed on the same circumference passing through the outer surface of the angle adjustment shaft 300, the fixing hole 230 or the fixing groove Any fixing hole 230 or the fixing groove (not shown) of the (not shown) is formed at a point separated by a predetermined distance from the adjacent fixing hole 230 or the fixing groove (not shown). .

7 and 8, the angle adjustment shaft 300 may be formed in a hollow shaft shape.

Referring to FIG. 3, the fastening means 400 is fastened to the rotor blades 110 at the inner circumferential surface of the hub 200 such that the rotor blades 110 are not separated from the rotary hole 210. The fastening means 400 may be a washer 410 and a nut 420.

Referring to FIG. 3, an open front end of the hub 200 may be coupled with a flow induction cover 240 for inducing air flow. The flow guide cover 103 serves to make the flow direction of the air flowing in uniform, so that the flow guide cover 103 may be made of plastic or a simple plate.

Referring to FIG. 3, the hub 200 is fitted to the rotating shaft 500 and assembled to the shaft 500 by the washer 510 and the bolt 520. Since the rotation shaft 500 must transmit the rotational force to the hub 200, the key 530 is struck between the boss (not shown) of the hub 500 and the rotation shaft 500 so that the hub 500 does not slip. All.

The main assembly sequence of Example 1 is as follows. First, the angle adjusting device 300 is set to the desired angle at the hub 200. Next, the pin 200 of the rotor blade 100 is inserted into the rotating hole 210 of the hub 200, while the moving pin 120 of the rotor blade 100 is moved to the hub 200. It is inserted into the fixing hole 320 or the fixing groove (not shown) of the angle adjusting device 300 via the moving hole 220 of the. Next, when the rotor blade 110 is fixed with the washer 410 and the nut 420, the rotor blade is fastened to the outer surface of the hub 200 at the required setting angle. Next, the flow guide cover 103 is fastened to the front end of the hub 200.

As described above, in Example 1, since the set angle of the rotor blade 100 is adjusted by the angle adjusting device 102, the set angles of the rotor blade 100 to be assembled are all the same. In the conventional apparatus, the operator grabbed the rotor 100 and plucked the nut 420 in order to adjust the set angle of the rotor 100, so that the rotor 100 was moved in the assembled blower fan. However, although the performance of the blower is deteriorated due to different setting angles, the rotor blade 100 can be assembled at the same setting angle. In the case of the first embodiment, since the set angle of the rotor blade 100 is determined according to the assembly position of the angle adjusting device 300, it is possible to easily and accurately work even if not a trainee.

In addition, in the conventional apparatus, when a twist occurs in the rotor blade 100, a deviation occurs from the original setting angle. However, in the first embodiment, when the angle adjusting device 300 is fastened to the hub 200, Since the angle adjusting device 300 does not rotate, the set angle of the rotor blade 100 does not change during use. In addition, it may be necessary to adjust the set angle of the rotor blade 100 during use. For example, when a larger amount of air is required, it is necessary to change the set angle of the rotor blade 100. Even in such a case, the set angle of the rotor blade 100 is the same as in the conventional apparatus. There was a problem that can not be set properly, but in the case of Example 1 first remove the flow guide cover 240, and after removing the rotor blade 100 from the hub 200, only after the readjustment of the angle control device 300 again It is possible to change the set angle of the rotor 100 in a very simple way of assembling the rotor 100.

Example 2

Embodiment 2 relates to a hub of a blowing fan capable of adjusting a set angle of a rotor blade according to the present invention, and relates to a hub 200 described in Embodiment 1.

That is, the second embodiment relates to the hub 200 in which the inner surface of the rotor blade 100 described in the first embodiment is fastened to the outer surface.

The description of the second embodiment is the same as that described in the first embodiment.

1 is a general structural diagram of a conventional axial blower.

Figure 2a is a structural diagram of a conventional bolt-shaped rotor blade root.

Figure 2b is a structural diagram showing a structure in which a conventional rotor blade-shaped rotor blade is attached to the hub.

Figure 2c is a structural diagram of a conventional integrated rotor blade root.

Figure 2d is a structural diagram showing a configuration in which a rotor blade is formed of a conventional integrated rotor blade is attached to the hub.

2E is a schematic diagram showing a general setting angle of a rotor blade;

3 is a sectional view of Embodiment 1 installed in a duct;

4 is a perspective view of a rotor blade of Example 1;

5 and 6 are perspective views of the hub of the first embodiment.

7 and 8 are perspective views of the angle adjustment shaft of the first embodiment.

<Description of the symbols for the main parts of the drawings>

100: blade 200: herb

300: angle control shaft 400: fastening means

500: rotating shaft

Claims (11)

A rotor blade (110) and a rotor blade (144), each of which has a moving pin (120) disposed to be spaced apart from the rotor blade (110), protruding from an inner end thereof; Rotating hole 220 is inserted into the circumference to rotate the rotor blades 110 and the rotor blade root 110 is inserted into the rotary hole 220 when the rotating pin 120 is inserted and guided A hub 200 each having an arc-shaped moving hole 210 formed therein; Including, The rotor blade is characterized in that it comprises an angle adjusting shaft 300 is fixed to the inner surface of the hub 200, the moving pin 120 is inserted and fixed via the moving hole 210. Blower fan with adjustable angle setting. delete The method of claim 1, A female thread 231 or a plurality of key grooves 232 are formed on the inner circumferential surface of the hub 200. The outer peripheral surface of the angle adjustment shaft 300 corresponds to the male screw 331 corresponding to the female screw 231 or the plurality of key grooves 232 to be fitted and fixed to the inner peripheral surface of the hub 200. Blowing fan capable of adjusting the set angle of the rotor blades, characterized in that a plurality of keys (332) are formed. The method of claim 3, Around the angle control shaft 300 of the rotor blades, characterized in that the moving pin 120 is fixed to the fixing hole 320 or the fixing groove is inserted and fixed via the moving hole 210 is formed Blower fan with adjustable angle setting. The method of claim 4, wherein The fixing hole 320 or the fixing groove is formed on the same circumference passing through the outer surface of the angle adjusting shaft 300, any fixing hole 320 or fixing groove of the fixing hole 320 or the fixing groove. The blowing fan is capable of adjusting the set angle of the rotor blades, characterized in that formed at a point separated by a predetermined predetermined distance from the adjacent fixing hole 320 or the fixing groove. The method of claim 1, The moving pin 120 is a blower fan capable of adjusting the set angle of the rotor blades, characterized in that spaced apart from the rotor blades 110 in the direction of the leading edge of the rotor blades (100). The method of claim 1, The front end located in the leading edge direction of the rotor blade 100 of both ends of the hub 200 is open so that the angle adjustment shaft 300 is fitted, An open front end of the hub 200 is a blowing fan capable of adjusting the set angle of the rotor blades, characterized in that the flow induction cover 240 is fastened to induce the flow of air. The method according to any one of claims 3 to 7, The angle control shaft 300 is a blower fan capable of adjusting the set angle of the rotor blades, characterized in that the hollow shaft (中空 軸) inside. The method according to any one of claims 1 and 3 to 7, The rotor blade (110) is characterized in that the rotor blade (100) is formed to protrude at the center of gravity when the rotor (100) is supported on the inner surface of the rotor (100) Blower fan with adjustable angle setting. The method according to any one of claims 1 and 3 to 7, Fastening means 400 fastened to the rotor blade root 110 at the inner circumferential surface of the hub 200 so that the rotor blade 110 is not separated from the rotary hole 210; Blowing fan capable of adjusting the set angle of the rotor blades, characterized in that it comprises a. Hub of blower fan 110 is the inner surface of the rotor blades 110 and the inner blade of the rotor blade 100, which is formed to protrude at the inner end of the moving pin 120 is spaced apart from the rotor blades 110, respectively In 200, The moving pin 120 when the rotor hole 210 and the rotor blade root 110 are inserted into the rotary hole 210 so that the rotor blade root 110 is rotatably inserted in the circumference of the hub 200. ) Are inserted into the circular arc-shaped moving hole 220, respectively, A male screw 331 or a plurality of keys 332 are formed on the outer side of the circumference portion, and the fixing hole 320 or the angle adjusting shaft 300 having the fixing groove formed therein is fixed to the moving pin 120. To the inner surface of the circumferential portion of the hub 200, a female screw 231 corresponding to the male screw 331 or a key groove 232 corresponding to the plurality of keys 332 is formed. Hub of blower fan with adjustable angle of setting.

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