KR102641661B1 - Variable pitch axial flow blower - Google Patents

Abstract

A variable blade axial blower is disclosed.
A variable-wing axial blower according to an aspect of the present invention includes a casing for fixing at least one driving motor inside the body; A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor; A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other; A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades; A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and a second connection bar connected in the middle of its length to the other end of the first connection bar, one end of which is connected to the moving object, and moving the third connection bar forward and backward, the third connection bar connected to the other end of the second connection bar, one end of which is hinged to the casing. A variable control unit equipped with a variable actuator that moves the moving object connected to the variable actuator via first, second, and third connection bars forward and backward; Including, the blade angle of the rotary blade can be varied by an adjustment lever that rotates in conjunction with the forward and backward movement of the moving object.

Description

{Variable pitch axial flow blower}

The present invention relates to a variable-wing axial blower. More specifically, the variable control of the rotary blades is replaced from a hydraulic drive type to an electric drive type, resulting in fast response, and variable control by performing electric drive only when the rotor blades are variable controlled. This relates to a variable-wing axial blower that can reduce maintenance costs by reducing energy consumption and significantly reducing related peripheral equipment required for variable control of rotary blades.

In general, a blower is a machine that converts the fluid into centrifugal force and lift energy to generate speed and pressure by applying mechanical energy to rotate the impeller. It is a fluid industrial machine with a relatively low pressure ratio.

Additionally, the axial blower blows air in the axial direction using rotational force transmitted from a driving source that rotates the fan.

These axial blowers are major equipment installed in various systems used for air supply and exhaust and air conditioning in buildings. They are installed to supply combustion air in industrial manufacturing processes, boilers and power generation facilities, and in mines, subways and tunnels. It is installed and used for ventilation and smoke control.

In the conventional hydraulic variable-wing axial blower, the control of the axial blowing fan is achieved through the rotation speed or adjustment angle of the rotor blade. The position of the rotor blade must be changed during operation, and the angle can be adjusted by changing the position of the rotor blade. It is usually done hydraulically, and for this purpose, a hydraulic adjustment device is mounted on the impeller of the axial blowing fan.

This hydraulic adjustment device consists of a hydraulic adjustment cylinder that rotates at the fan rotation speed, an actuator for controlling hydraulic valves, and a fixed oil connection pipe to which the oil supply pipe is connected, and is accompanied by hydraulic piping equipment and auxiliary equipment required to drive the hydraulic cylinder. I do it.

Accordingly, the cost of repairing and maintaining the equipment required to operate the hydraulic control device is excessive, and failure of the hydraulic pump and hydraulic cylinder or leakage of oil in the hydraulic piping system causes environmental pollution and causes damage to the equipment. While damage occurred, there was a problem that it took a lot of time to repair and restore it.

(Patent Document 1) KR10-1083997 B1

The present invention is intended to solve the above problems. The purpose of the present invention is to replace the variable control of the rotor blades from a hydraulic drive method to an electric drive method, so that the response is fast and electric drive is performed only when the rotor blades are variable controlled. We aim to provide a variable-wing axial blower that can reduce energy consumption during variable control and reduce management and maintenance costs by significantly reducing related peripheral equipment required for variable control of rotary blades.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

According to one aspect of the present invention, a casing for fixedly installing at least one driving motor inside the body; A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor; A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other; A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades; A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and a second connection bar connected in the middle of its length to the other end of the first connection bar, one end of which is connected to the moving object, and moving the third connection bar forward and backward, the third connection bar connected to the other end of the second connection bar, one end of which is hinged to the casing. A variable control unit equipped with a variable actuator that moves the moving object connected to the variable actuator via first, second, and third connection bars forward and backward; Including, providing a variable-wing axial blower that varies the blade angle of the rotary blade by a control lever that rotates in conjunction with the forward and backward movement of the moving object.

According to another aspect of the present invention, a casing for fixedly installing at least one driving motor inside the body; A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor; A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other; A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades; A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and a variable control unit that moves the moving object forward and backward by having a variable actuator that moves the first connection bar connected to the moving object forward and backward. Including, providing a variable-wing axial blower that varies the blade angle of the rotary blade by a control lever that rotates in conjunction with the forward and backward movement of the moving object.

At this time, the hub includes a pair of restraint guide bars that guide the restraint to enable reciprocating movement of the movable body, and one end of the pair of restraint guide bars is coupled to the sealing surface of the hub and is correspondingly assembled with a guide hole formed through the movable body. It may include a straight bar of a certain length arranged in parallel with the boss.

At this time, the movable body includes a first movable body in which the locking groove is recessed in an annular shape on the outer surface and a circular ball that is reciprocally assembled to the boss is formed through the center of the body, and at the rear of the first movable body. It may be detachably assembled and may include a second movable body rotatably supporting the connection body connected to one end of the first connection bar.

At this time, the first moving body has a circular hole that is movably assembled with the boss through the center of the body, and has a flange portion on the outer edge to form a ring-shaped locking groove on the outer surface when assembled. It may include protruding anterior and posterior discs.

At this time, the second moving body includes a bearing member that rotatably supports the coupling member coupled to one end of the connecting body, and a circular hole into which the bearing member is inserted and assembled is formed through the center of the body, and the pair of It may include a cylindrical casing in which a cut groove is recessed on the outer surface corresponding to the constraint guide bar.

At this time, the first connection bar is rotatably connected to the middle of the length of the second connection bar through a vertical pin, and the other end of the second connection bar is connected to one end of the third connection bar through a different vertical pin. It can be connected rotatably.

According to the above configuration, the variable-wing axial blower according to the present invention controls the blade angle of the rotor blade that generates the blowing force by a motor drive method only when variable control of the rotor blade is performed, thereby reducing the consumption during variable control of the rotor blade. Energy consumption can be reduced.

By replacing the variable control of the blade angle of the rotor blade from a hydraulic drive type to an electric drive type, the variable control of the rotor blade can be quickly responded to suit various blowing environments, and environmental pollution due to oil leaks that occurred in the hydraulic drive type can be handled. It is environmentally friendly by fundamentally preventing the blower, and there is no need to install hydraulic equipment required for variable control of the rotary blade in the hydraulic drive method, resulting in a significant reduction in the cost of maintaining the blower.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1A and 1B are external perspective views showing a variable-wing axial blower according to a first embodiment of the present invention.
Figure 2 is an overall perspective view showing a state in which the casing is separated and removed from the variable-wing axial blower according to the first embodiment of the present invention.
Figure 3 is a perspective view showing a state in which the hub, rotary blades, and moving body are combined in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 4 is an exploded perspective view showing the hub, rotary blades, and moving body in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 5 is a cross-sectional perspective view showing the hub, rotary blades, and moving body in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 6 is a detailed view of part A of Figure 5.
Figure 7 is a perspective view showing the coupling state of the rotary blade and the moving body in the variable-wing axial blower according to the first embodiment of the present invention with the hub separated.
Figure 8 is a perspective view showing a state in which the rotary blades and the control lever are combined in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 9 is an exploded perspective view showing a state in which the rotary blades and the control lever are combined in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 10 is a cross-sectional perspective view showing a state in which the rotary blades and the control lever are combined in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 11 is a cross-sectional perspective view showing a state in which the hub, rotary blades, and control lever are combined in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 12 is an exploded perspective view showing the drive motor, hub, and variable control unit in the variable-wing axial blower according to the first embodiment of the present invention.
Figure 13 is a perspective view showing the variable control unit in the variable-wing axial blower according to the first embodiment of the present invention.
Figures 14a and 14b are external perspective views showing a variable-wing axial blower according to the second embodiment of the present invention.
Figure 15 is an overall perspective view showing a state in which the casing is separated and removed from the variable-wing axial blower according to the second embodiment of the present invention.
Figure 16 is a perspective view showing the connection state of the moving body and the variable control unit in the variable-wing axial blower according to the second embodiment of the present invention.
Figures 17a and 17b are operating state diagrams showing the state of changing the blade angle of the rotary blade by the variable control unit in the variable-wing axial blower according to the first and second embodiments of the present invention.
Figures 18a and 18b are external views showing the state of varying the blade angle of the rotary blade in the variable-wing axial blower according to the first and second embodiments of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention, parts not related to the description have been omitted in the drawings, and identical or similar components are given the same reference numerals throughout the specification.

The words and terms used in this specification and claims are not to be construed as limited in their usual or dictionary meanings, but according to the principle that the inventor can define terms and concepts in order to explain his or her invention in the best way. It must be interpreted with meaning and concepts consistent with technical ideas.

Therefore, the embodiments described in this specification and the configuration shown in the drawings correspond to a preferred embodiment of the present invention, and do not represent the entire technical idea of the present invention, so the configuration may be replaced by various alternatives at the time of filing of the present invention. There may be equivalents and variations.

In this specification, terms such as “comprise” or “have” are intended to describe the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to describe the presence of one or more other features. It should be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

A component being “in front,” “rear,” “above,” or “below” another component means that it is in direct contact with the other component, unless there are special circumstances. This includes not only those placed at the “bottom” but also cases where another component is placed in the middle. In addition, the fact that a component is "connected" to another component includes not only being directly connected to each other, but also indirectly connected to each other, unless there are special circumstances.

Hereinafter, a variable-wing axial blower according to a preferred embodiment of the present invention will be described with reference to the drawings.

1A and 1B are external perspective views showing a variable-wing axial blower according to a first embodiment of the present invention, and Figure 2 is a state in which the casing is separated and removed from the variable-wing axial blower according to a first embodiment of the present invention. It is an overall perspective view, and FIG. 3 is a perspective view showing a state in which the hub, rotary blades, and moving body are combined in the variable-wing axial blower according to the first embodiment of the present invention, and FIG. It is an exploded perspective view showing the hub, rotary blades, and moving body in the variable-wing axial blower according to the present invention, and Figure 5 is a cross-sectional perspective view showing the hub, rotating blades, and moving body in the variable-wing axial blower according to the first embodiment of the present invention. 6 is a detailed view of part A of FIG. 5.

As shown in FIGS. 1A, 1B, 2, 3, and 4, the variable-wing axial blower 100 according to the first embodiment of the present invention includes a casing 1, a hub 10, and rotary blades ( 20), an adjustment lever 30, a moving body 40, and a variable control unit 50 may be included.

As shown in FIGS. 1A and 1B, the casing 1 is a hollow cylinder member in which at least one driving motor 2, which generates a rotational driving force when power is applied, is fixedly installed in the center of the body.

This casing (1) includes a front casing (1a), at least one central casing (1b), and a rear casing (1c), and the front casing (1a) is provided with the hub (10b) via a plurality of supports (10b). A hemispherical cone (10a) that protects and is spaced apart from the front of the (10) is fixedly installed, and a driving motor to which the hub (10) and the drive shaft are connected via a plurality of other supports is installed inside the body of the central casing (1b). (2) can be arranged by fixed installation.

This casing (1) has a fixing bracket (1d) provided at the joint portion where the front casing (1a) and the central casing (1b) are flange-connected to each other and the joint portion where the central casing and the rear casing (1c) are flange-connected. It can be detachably installed on a base structure (not shown) provided on the floor or ceiling.

As shown in FIGS. 3, 4, 5, and 6, the hub 10 has a boss 16 connected to the body of the drive shaft of the drive motor 2 fixedly installed inside the casing 1. It is a rotating structure provided in the center and rotated in one direction along with the plurality of rotary blades 20 by the rotational driving force of the driving motor.

The boss 16 may be provided as a hollow cylindrical extension pipe extending a certain length forward from the sealed surface of the hub 10 so that the outer surface of the drive shaft and the inner surface are coupled to each other via a key member.

This hub 10 includes an outer skirt 11 in which a plurality of arrangement grooves 12, in which the plurality of rotary blades 20 are rotatably arranged, are recessed at regular intervals in the circumferential direction on the outer surface, and the arrangement It may include an inner skirt 14 formed at regular intervals on the inside of the outer skirt 11 to be connected to an extension extending from the bottom surface of the groove.

The arrangement groove 12 is recessed at a certain depth from the outer surface of the outer skirt 11 toward the inner skirt 14, thereby forming a connection flange 22 provided at the end of the rotary blade 20 and a variable axis (described later). A coupling portion with the coupling plate 23 provided at the top of 24) may be disposed.

The hub 10 may include a pair of restraining guide bars 15 that restrain and guide the mobile body 40 to enable forward and backward reciprocating movement along the boss 16.

The pair of restraint guide bars 15 have one end coupled to the sealing surface of the hub 10, are assembled in correspondence with a guide hole formed through the moving body 40, and are disposed on the outside of the boss 16 in parallel with the boss. It can be made with a straight bar of a certain length.

In the extension portion extending from the bottom surface of the arrangement groove 12 to the inner skirt 14, a rotation support hole that rotatably supports the variable shaft 24 can be formed through a hollow cylindrical bushing member. there is.

Figure 7 is a perspective view showing the combined state of the rotary blade and the moving body in the variable-wing axial blower according to the first embodiment of the present invention with the hub separated, and Figure 8 is a variable-wing axial blower according to the first embodiment of the present invention. It is a perspective view showing the state in which the rotary blades and the control lever are combined in the axial flow blower, and Figure 9 is an exploded perspective view showing the state in which the rotor blades and the control lever are combined in the variable-wing axial blower according to the first embodiment of the present invention. , Figure 10 is a cross-sectional perspective view showing a state in which the rotary blade and the control lever are combined in the variable-wing axial blower according to the first embodiment of the present invention, and Figure 11 is the variable-wing axial blower according to the first embodiment of the present invention. This is a cross-sectional perspective view showing the hub, rotary blade, and control lever combined.

As shown in FIGS. 7, 8, 9, 10, and 11, the rotary blade 20 includes a disk-shaped connecting flange 22 at an end inserted into the arrangement groove of the hub 10. In addition, it is equipped with a variable shaft 24 of a certain length, which is integrally provided with a coupling plate 23 at one end of which is detachably coupled to the connecting flange 22 and a plurality of fastening members, and rotates with the hub to generate blowing force. It is a wing member that generates.

The rotary blade 20 may include a shaft support portion 25 that rotatably supports the variable shaft 24 on the inside of the inner skirt.

The shaft support portion 25 includes a first hub body 25a fixed to a plurality of fastening members on the inner surface of the inner skirt 14, and a second hub body integrally coupled to the other end of the variable shaft 24. It may include a hub body (25b) and a bearing member (25c) interposed between the first and second hub bodies.

Accordingly, the rotary blade 20 coupled to the variable shaft 24 rotates in one direction with the hub to blow air, and rotates the variable shaft in one direction around the blade axis Y extending from the center of the rotation support hole. During displacement, the outer surface of the hub is rotated at a certain angle and the blade angle is changed to control the wind volume.

As shown in FIGS. 7, 8, 9, 10, and 11, the control lever 30 is connected to an end of the variable shaft 24 exposed to the inside of the inner skirt 14 of the hub 10. It includes a connecting crank 31, one end of which is connected, and the other end of the connecting crank 31, which is spaced a certain distance from the blade axis, is rotatably connected to one end and is eccentric at a certain distance to one side from the variable shaft 24. It may include an eccentric shaft 33 of a certain length arranged.

These control levers 30 are a plurality of lever members that are each coupled in one-to-one correspondence with the plurality of rotary blades to connect the plurality of rotary blades and the moving object.

The other end of the eccentric shaft 33, one end of which is connected at a right angle to the other end of the connecting crank 31, may include a locking block 32 that is locked in a locking groove formed on the outer surface of the moving body 40.

At this time, the locking block 32 may be detachably assembled to the other end of the eccentric shaft 33 or may be provided as a hexahedral block member integrally provided.

Accordingly, when the connecting crank rotates, the blade angle can be changed by rotating the blade at a certain angle in accordance with the rotation amount of the connecting crank, using the blade shaft as the rotation center.

As shown in FIGS. 4, 5, 6, 7 and 17a and 17b, the moving body 40 is a locking block of the eccentric shaft 33 provided at the other end of the connecting crank 31. A locking groove 44 that is recessed to be connected to the hub 10 is provided in a ring shape on the outer surface, and a central hole corresponding to the boss 16 provided in the center of the body of the hub 10 is provided in the center of the body. It can be formed through a penetrating assembly to enable forward and backward reciprocating movement along the boss 16.

This movable body 40 is a first movable body in which the locking groove 44 is recessed in a ring shape on the outer surface, and a circular hole that is movably assembled to the boss 16 is formed through the center of the body. A connection body that includes 40a), is detachably assembled on the front of the first moving body by a plurality of fastening members, and is connected to the rear end, which is one end of the first connection bar 51 provided in the variable control unit 50. It may include a second moving body 40b that rotatably supports (57).

The first moving body (40a) has circular holes (41a, 41a) that are movably assembled to the boss (16) through the center of the body, respectively, and have a ring-shaped locking groove on the outer surface when assembled. It may include front and rear disks 41 and 42 each with protruding flange portions on the outer edges to form 44).

The front and rear disks 41 and 42 penetrate through the front and rear guide holes 41b and 42b, which are respectively assembled with a pair of restraint guide bars 15, one end of which is coupled to the sealing surface of the hub 10. You can.

The second movable body 40b includes a bearing member 59 that rotatably supports a coupling member 58 coupled to the rear end of the connecting body 57, and the bearing member 59 is inserted and arranged. A circular hole (43a) is formed through the center of the body, and a cut groove is formed on the outer surface corresponding to the pair of restraint guide bars 15 to prevent interference with the pair of restraint guide bars 15 during forward and backward reciprocation. It may include a cylindrical casing 43 that recesses 43b).

The bearing member 59 assembled to the inner step of the circular hole 43a is difficult to be removed from the inside of the second moving body by the bearing fixing plate 59a fixed to the inner step by a plurality of fastening members. Can be assembled.

At this time, the first moving body is shown and explained as being composed of a front disk and a rear disk, which have a flange portion protruding from the outer edge and a locking groove into which the locking block is connected during joint assembly is formed in a ring shape on the outer surface. It is not limited to this, and may be made of an integrated disk in which the locking groove is recessed.

Accordingly, the moving object moves backward or returns forward along the boss by the external force transmitted from the variable control unit, and when the moving object moves forward and backward, the rotation movement with the boss as the center of rotation is restrained by the restraint guide bar. You can.

In addition, the mobile body is divided into the first mobile body and the second mobile body, so that the connection body rotatably assembled with respect to the second mobile body can be more easily separated or reassembled from the mobile body during maintenance. there is.

Figure 12 is an exploded perspective view showing the drive motor, hub, and variable control unit in the variable-wing axial blower according to the first embodiment of the present invention, and Figure 13 is the variable control unit in the variable-wing axial blower according to the first embodiment of the present invention. It is a perspective view showing .

As shown in FIGS. 1A, 1B, 2, 12, and 13, the variable control unit 50 has one end with a connection body 57 provided on the second mobile body 40b of the mobile body 40. It includes a first connection bar (51) of a certain length whose rear end is rotatably connected via a vertical pin (51b), and a vertical pin (51a) whose middle length is different from the front end, which is the other end of the first connection bar. It may include a second connection bar 52 of a certain length that is rotatably connected through a medium.

The hinge member 55 fixed to the casing 1 and the other end of the second connecting bar 52, one end of which is rotatably connected, are rotatably connected via a different vertical pin 53a. It may include a third connection bar 53 of a certain length.

At this time, the first connection bar 51 and the third connection bar 53 may be arranged side by side so as to be arranged at approximately a right angle to the second connection bar.

The hinge member 55 is provided as a bearing member such as a unit bearing or earth bearing (UCFL206) that rotatably supports one end of the second connection bar, or is connected through a hinge pin perpendicular to one end of the second connection bar. It may include a connected hinge block.

It is connected to the rear end, which is the other end of the third connection bar 53, and reciprocates the third connection bar 53 forward and backward in the horizontal direction to move the third connection bar 53 backward or forward when power is applied. It may include at least one variable actuator 54 that moves.

The front casing (1a) of the casing (1) corresponding to the other end of the second connecting bar (52) connected to the third connecting bar (53) is provided with a second connecting bar (52) with the hinge member as a pivot. It is desirable to form the long hole 3 long and penetrating in the horizontal direction to prevent interference during turning movement.

The variable actuator 54 is fixed to the support 56 provided on the outer surface of the central casing 1b of the casing 1 to reciprocate the third connecting bar 53 forward and backward when power is applied. It can be equipped with an electric cylinder or a servo motor.

Accordingly, when the third connection bar moves backward or returns forward by the operation of the variable actuator to which power is applied, the second connection bar connected to the tip of the third connection bar via a vertical pin moves the hinge member. Because it is rotated around the pivot axis, the first connection bar, which is connected through a vertical pin in the middle of the length of the second connection bar, is linked to the third connection bar by moving backward or moving forward while maintaining a parallel state. Thus, the moving object may move backward or return forward along the hub.

Figures 14a and 14b are external perspective views showing a variable-wing axial blower according to the second embodiment of the present invention, and Figure 15 is a casing removed from the variable-wing axial blower according to the second embodiment of the present invention. It is an overall perspective view showing the state, and Figure 16 is a perspective view showing the connection state of the moving body and the variable control unit in the variable-wing axial blower according to the second embodiment of the present invention.

The variable-wing axial blower (100a) according to the second embodiment of the present invention includes a casing (1), a hub (10), and rotary blades (20), as shown in FIGS. 14A, 14B, 15, and 16. , it may include an adjustment lever 30, a moving body 40, and a variable control unit 50a.

At this time, the hub 10, the rotary blade 20, the control lever 30, and the moving body 40 are the same as those disclosed in the first embodiment, and detailed description thereof will be omitted below.

The variable control unit 50a is disposed between the hub and the cone inside the casing 1 and directly moves the moving body 40 backward or forward to change the blade angle of the rotary blade 20. It may include a variable actuator 54a that provides a returning external force.

This variable control unit 50a is a fixed length section whose rear end is rotatably connected to the connecting body 57 provided on the second moving body 40b of the moving body 40 via a vertical pin 51b. The first connection bar 51 includes one connection bar 51, and is connected to the other end of the first connection bar to move the first connection bar 51 backward or return it forward when power is applied. It may include a variable actuator 54a that reciprocates.

The variable actuator 54a is disposed inside a hollow cylindrical inner casing 9 connected to the inner surface of the central casing 1b constituting the casing 1 via a plurality of support bars 9a. It can be provided.

The inner casing 9 is made of a hollow cylindrical structure having an outer diameter that is approximately the same as or relatively small than the outer diameter of the hub 10 and is fixedly installed inside the central casing to be spaced apart from the hub 10 at a certain distance. You can.

The variable actuator 54a includes a hemispherical cone 10a that covers and protects the open end of the inner casing 9 provided therein, and the inner casing 9 is formed so as to minimize the effect during blowing. It may be provided by being disposed between the cone 10a fixed to 1) and the hub 10 that rotates with a plurality of rotary blades.

Like the first embodiment, the variable actuator 54a is an electric cylinder or server fixed to the pedestal 56a provided inside the central casing 1b to reciprocate the first connection bar forward and backward when power is applied. It can be equipped with a motor.

At this time, the pedestal 56a may be connected to the body of the variable actuator 54a via a horizontal hinge axis.

Accordingly, when the first connection bar moves backward or returns forward by the operation of the variable actuator to which power is applied, the moving object is directly connected to the variable actuator and the first connection bar. It can move backwards or return forwards along the hub.

Figures 17a and 17b are operating state diagrams showing the state of changing the blade angle of the rotary blade by the variable control unit in the variable-wing axial blower according to the first and second embodiments of the present invention, and Figures 18a and 18b are the state of changing the blade angle of the rotary blade according to the first and second embodiments of the present invention. This is an external view showing the state of variable blade angle of the rotary blade in the variable-wing axial blower according to embodiments 1 and 2.

The variable-wing axial blower (100, 100a) according to each embodiment of the present invention is a process of forcibly rotating the plurality of rotary blades (20) together with the hub (10) by the rotational driving force of the driving motor (2) to blow air. By changing the position based on the blade axis (Y) of the rotary blade 20, the blade angle can be changed to adjust the air blowing amount.

The operation of varying the blade angle (θ) of the rotary blade in order to control the blowing amount while maintaining the rotational speed of the rotary blade 20 constant is as shown in FIGS. 17A, 17B and 18A, 18B. , This can be performed by moving the first connection bar 51 backward or forward and returning by the variable actuator 54 provided outside or inside the casing 1.

In the case of the variable-wing axial blower 100 in which the variable actuator 54 is provided outside the casing 1, the third connection bar 53 is stopped by the operation of the variable actuator 54 to which power is applied. When moving backward in this state, the second connection bar 52 rotates using the hinge member 55 as a pivot axis, and the first connection bar 51 is connected to the second connection bar 52 through a vertical pin. Since it moves backward in a direction parallel to the third connection bar 53, the moving body 40 connected to the first connection bar 51 and the connection body 57 is subjected to an external force transmitted from the variable actuator 54. Accordingly, the hub 10 can be moved backward a certain distance in a straight line according to the backward movement amount of the third connection bar 53 along the boss 16 of the hub 10.

In the case of the variable-wing axial blower (100a) in which the variable actuator (54a) is provided inside the casing (1), the first connection bar (51) is stopped by the operation of the variable actuator (54a) to which power is applied. When the variable actuator 54a is directly connected to the moving body 40 through the first connection bar and the connecting body 57, the moving body 40 is connected to the variable actuator 54a. By the external force transmitted from (54a), the boss 16 of the hub 10, which rotates with the rotor blade, can be moved backward a certain distance in a straight line in accordance with the backward movement amount of the first connecting bar 51. .

In succession, the control lever 30 is connected to the locking groove 44 of the moving body 40, which is moved backward by the variable actuators 54 and 54a provided outside or inside the casing, so that the boss is It is rotated at a certain angle according to the amount of backward movement of the moving object moving in a straight line.

In this case, the plurality of rotary blades 20 provided on the outer surface of the hub 10 are rotated by the external force transmitted when the variable actuators 54 and 54a operate, and the blade shaft is rotated through the control lever 30. With (Y) as the center of rotation, the blade angle (θ) of the plurality of rotor blades is variably controlled while being rotated at a certain angle, thereby maintaining the rotation speed of the rotor blades forced to rotate by the drive motor at a constant level. The wind volume can be adjusted.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention can add or change components within the scope of the same spirit. , deletion, addition, etc., other embodiments can be easily proposed, but this will also be said to fall within the scope of the present invention.

1: Casing 2: Driving motor
10: Hub 11: External skirt
12: Placement groove 14: Inner skirt
20: rotary blade 24: variable shaft
30: Adjustment lever 31: Lever axis
32: Locking block 33: Eccentric axis
40: moving body 40a, 40b: first and second moving body
41, 42: front and rear disks 43: cylindrical casing
44: Locking groove 50,50a: Variable control unit
51: first connection bar 52: second connection bar
53: Third connection bar 54,54a: Variable actuator

Claims (7)

A casing that securely installs at least one driving motor inside the body;
A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor;
A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other;
A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades;
A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and
It has a second connection bar connected in the middle of its length to the other end of the first connection bar, one end of which is connected to the moving object, and operates a third connection bar connected to the other end of the second connection bar, one end of which is hinged to the casing, forward and backward. A variable control unit equipped with a variable actuator to move a moving object connected to the variable actuator via first, second, and third connection bars forward and backward; Contains,
The hub includes a pair of restraint guide bars that guide the restraint to enable reciprocating movement of the moving object,
The pair of restraint guide bars includes a straight bar of a certain length, one end of which is coupled to the sealing surface of the hub, assembled in correspondence with a guide hole formed through the moving body, and disposed in parallel with the boss,
A variable-wing axial blower that varies the blade angle of the rotary blade by a control lever that rotates in conjunction with the forward and backward movement of the moving object. A casing that securely installs at least one driving motor inside the body;
A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor;
A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other;
A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades;
A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and
It has a second connection bar connected in the middle of its length to the other end of the first connection bar, one end of which is connected to the moving object, and operates a third connection bar connected to the other end of the second connection bar, one end of which is hinged to the casing, forward and backward. A variable control unit equipped with a variable actuator to move a moving object connected to the variable actuator via first, second, and third connection bars forward and backward; Contains,
The movable body includes a first movable body in which the locking groove is recessed in an annular shape on the outer surface and a circular ball that is reciprocatably assembled with the boss is formed through the center of the body, and is detachable from the rear of the first movable body. Including a second moving body that is assembled and rotatably supports a connection body connected to one end of the first connection bar,
A variable-wing axial blower that varies the blade angle of the rotary blade by a control lever that rotates in conjunction with the forward and backward movement of the moving object. A casing that securely installs at least one driving motor inside the body;
A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor;
A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other;
A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades;
A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and
A variable control unit that moves the moving object forward and backward by having a variable actuator that moves the first connecting bar connected to the moving object forward and backward; Contains,
The hub includes a pair of restraint guide bars that guide the restraint to enable reciprocating movement of the moving object,
The pair of restraint guide bars includes a straight bar of a certain length, one end of which is coupled to the sealing surface of the hub, assembled in correspondence with a guide hole formed through the moving body, and arranged in parallel with the boss,
A variable-wing axial blower that varies the blade angle of the rotary blade by an adjustment lever that rotates in conjunction with the forward and backward movement of the moving object. A casing that securely installs at least one driving motor inside the body;
A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor;
A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other;
A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades;
A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and
A variable control unit that moves the moving object forward and backward by having a variable actuator that moves the first connecting bar connected to the moving object forward and backward; Contains,
The movable body includes a first movable body in which the locking groove is recessed in an annular shape on the outer surface and a circular ball that is reciprocatably assembled with the boss is formed through the center of the body, and is detachable from the rear of the first movable body. Including a second moving body that is assembled and rotatably supports a connection body connected to one end of the first connection bar,
A variable-wing axial blower that varies the blade angle of the rotary blade by a control lever that rotates in conjunction with the forward and backward movement of the moving object. According to paragraph 2 or 4,
The first moving body has a circular hole that is movably assembled with the boss through the center of the body, and has flange portions protruding on the outer edge to form a ring-shaped locking groove on the outer surface when assembled. Variable-wing axial blower with front and rear discs. According to clause 5,
The second moving body includes a bearing member that rotatably supports a coupling member coupled to one end of the connecting body,
A variable-wing axial flow blower comprising a cylindrical casing in which a circular hole into which the bearing member is inserted and assembled is formed through the center of the body, and a cut groove is recessed in the outer surface corresponding to a pair of restraining guide bars. A casing that securely installs at least one driving motor inside the body;
A hub that is rotatably driven and has a boss connected to the drive shaft of the drive motor;
A plurality of variable shafts rotatably assembled to the hub and a plurality of rotary blades each end connected to each other;
A plurality of control levers having a lever shaft at one end connected to a variable shaft exposed to the inside of the hub, and having an eccentric shaft eccentrically provided at the other end of the lever shaft, and connected one to one with the plurality of rotary blades;
A locking groove connected to the eccentric axis of the control lever eccentrically provided at the other end of the lever shaft is recessed on the outer surface, and a central hole coupled to the boss is formed through the center of the body to enable forward and backward reciprocating movement on the boss. Assembled mobile body; and
It has a second connection bar connected in the middle of its length to the other end of the first connection bar, one end of which is connected to the moving object, and operates a third connection bar connected to the other end of the second connection bar, one end of which is hinged to the casing, forward and backward. A variable control unit equipped with a variable actuator to move a moving object connected to the variable actuator via first, second, and third connection bars forward and backward; Contains,
The first connection bar is rotatably connected to the middle of the length of the second connection bar through a vertical pin, and the other end of the second connection bar is connected to one end of the third connection bar through a different vertical pin. Connected for rotation,
A variable-wing axial blower that varies the blade angle of the rotary blade by a control lever that rotates in conjunction with the forward and backward movement of the moving object.

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