Rotating device

Abstract

A rotating device is provided. The rotating device comprises: a housing; a variable guide vane module disposed on one surface of the housing; and a housing cover covering the variable guide vane module. The variable guide vane module is configured to be separable into at least two modules and comprises a first module and a second module, the first module comprising a cylindrical blade shell disposed in the housing and a first connecting rod member disposed on the blade shell, the second module comprising a shroud shell located between the housing and the blade shell and a second connecting rod member disposed in the shroud shell and driven according to the driving of the first connecting rod member. The rotating device can be implemented in various ways.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2019-0136253, filed on October 30, 2019, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] The present disclosure relates to a rotating device, and more particularly, to a rotating device that can implement a variable guide vane (VGV) module having blades with a flow control function as a component of a compressor, thereby facilitating assembly / disassembly of the VGV module into / from the compressor. Background Art

[0003] According to the demand for the development of high-performance, high-power electrical equipment, rotating devices such as generators and motors are provided. Examples of the rotating device include an industrial compressor, a pump, or a vehicle air supplier having a rotor support structure.

[0004] Specifically, the centrifugal compressor is a device that compresses a fluid by applying centrifugal force to the fluid using a rotating impeller.

[0005] A centrifugal compressor generally includes: a drive unit that generates a driving force; a gear unit that is connected to the drive unit; a gear box in which the gear unit is installed; a rotating shaft that is inserted into the gear box and connected to the gear unit; an impeller that is connected to the rotating shaft to rotate and transfers rotational kinetic energy to the fluid to increase the pressure of the fluid; a vortex member that supports the impeller; and a shroud that is connected to the vortex member to form an internal space in which the fluid can flow.

[0006] The air compressed by the impeller is guided to the scroll member via a diffuser arranged along the outer circumference of the impeller. The diffuser includes a plurality of blades and releases the compressed air to the scroll member through the spaces between the blades. The blades of the diffuser are arranged along the circumference of the diffuser at intervals of a predetermined angle, so that the air can be released uniformly.

[0007] However, a demand has arisen to control the amount of air released, and there has been technology for controlling the angle of the vanes of the diffuser to control the amount of air released.

[0008] Figures 1 to 4 A conventional guide vane module 1 comprising blades 14 is shown.

[0009] In the conventional guide vane module 1, the blade 14 is connected to the ring 13 to control the angle of the blade 14, and the ring 13 is connected to one end of the rotating arm 12 connected to the linear actuator 11 so as to be rotatable. When the ring 13 rotates, the angle of the blade 14 changes, so that the amount of air that can pass through the space between the blades 14 changes. However, since the ring 13 is connected to one end of the rotating arm 12, it is difficult to accurately control the opening of the blade 14. In addition, since the rotating arm 12 is exposed to the outside of the conventional guide vane module 1 to be connected to the actuator 11, it may not be possible to reduce the size of the entire conventional guide vane module 1.

[0010] In addition, due to the characteristics of the rotating device (specifically, a variable guide vane (VGV) module equipped with a ring), a portion forming a link member is provided on the side of a gearbox of an expander or compressor, and an actuator and a link member are provided on a vertically divided upper plate of the gearbox. Therefore, in order to disassemble the gearbox for maintenance or repair, it is also necessary to disassemble the VGV module, which inevitably takes a long time.

[0011] Furthermore, since the elements provided in the diffuser are not implemented as separate modules, not only does it take a long time to disassemble and assemble the VGV module for maintenance or repair of the compressor, but foreign matter is highly likely to penetrate and become stuck in gaps between elements on the flow path over time.

[0012] Furthermore, since a tolerance of a gap between a blade and a housing of the VGV module increases according to a stacking / coupling structure of the VGV module, a pressure loss may occur in the VGV module.

[0013] Furthermore, in the event of a fault in the VGV module, it is necessary to check the internal connecting rod member of the VGV module. However, since the components and elements of the VGV module are implemented as a separate module, it is necessary to completely disassemble the VGV module from the compressor to separately check the connecting rod member, which is not only inconvenient but also time-consuming. Furthermore, since the actuator is also disassembled, it is necessary to check the connecting rod member while manually operating, which is very inconvenient. Summary of the invention

[0014] Embodiments of the present disclosure provide a rotary device in which components and elements of a variable guide vane (VGV) module are implemented as separate modules and thus can be easily assembled or disassembled.

[0015] However, the embodiments of the present disclosure are not limited to those described herein. The above and other embodiments of the present disclosure will become more apparent to those skilled in the art by referring to the detailed description of the present disclosure given below.

[0016] According to an embodiment of the present disclosure, a rotating device includes: an outer shell; a variable guide vane module, which is arranged on a surface of the outer shell; and an outer shell cover, which covers the variable guide vane module, wherein the variable guide vane module is configured to be separable into at least two modules and includes a first module and a second module, the first module includes a cylindrical blade shell arranged in the outer shell and a first connecting rod member arranged on the blade shell, and the second module includes a shroud shell located between the outer shell and the blade shell and a second connecting rod member arranged in the shroud shell and driven according to the drive of the first connecting rod member.

[0017] The first module and the second module may be provided to be coupled to or separated from each other by a coupling member.

[0018] The first link member may include: a main shaft, which is arranged in the shell along a first direction perpendicular to the blade shell; a main link arm, which is connected to the main shaft and extends along a second direction perpendicular to the first direction, and thus rotates according to the rotation of the main shaft; a control arm, which is connected to the main link arm and is formed to extend along the second direction; and a pivot point, which is arranged at one end of the blade shell and rotatably supports the control arm.

[0019] The master link arm may include: a body connected to the main shaft; and a slot extending from the body in the second direction.

[0020] One end of the groove in the second direction may be open, and the groove is formed to have an angular U-shape.

[0021] A first rotation guide member may be disposed in the groove and inserted into one end of the control arm for rotation of the one end of the control arm.

[0022] The first rotation guide member may include: a first protrusion formed between portions of the groove; and a first rotation ball formed around the first protrusion for rotation of one end of the control arm.

[0023] The control arm may include a body and an input end and an output end provided at both ends of the body, and the input end and the output end may be formed with rotation openings to be coupled to the slot and the second link member, respectively.

[0024] The rotating opening can be respectively provided at both ends of the main body with a collective symbol and subset symbols The shape is open in the first direction.

[0025] The second link member may include: a control ring that rotates according to the rotation of the control arm around the pivot point; a plurality of blades that are connected to the control ring and change the orientation of the plurality of blades while being opened or closed; and a link member that is disposed between the control ring and the blades and transmits the rotation of the control ring to the blades.

[0026] A plurality of guide grooves into which the output end of the control arm is inserted may be formed between the outer circumferential surface and the inner circumferential surface of the control ring, and a second rotation guide member may be formed in the guide groove to be inserted into the output end of the control arm.

[0027] The second rotation guide member may include: a second protrusion formed in the guide groove to protrude in the first direction; and a second rotation ball formed around the second protrusion for rotation of the output end of the control arm.

[0028] The link member may include a coupling portion coupled to the blade; and a groove portion extending from the coupling portion in the second direction.

[0029] The rotating device may further include: a protruding pin provided on one surface of the control ring to protrude toward the inside of the shield housing and to be located in the groove portion.

[0030] A plurality of through holes may be formed in the shroud housing, the blades rotatably passing through the through holes, and the rotating device may further include a bushing disposed between the through holes and the blades.

[0031] The rotating device may include sliding pads provided on both sides of a circumferential surface of a central opening of the control ring for rotation of the control ring.

[0032] When the first module is inserted into the shield housing, the output end of the control arm may be inserted into the second rotation guide member so that the first link member and the second link member are linked.

[0033] The rotating device may further include: a stopping member provided on the blade housing at both sides of the main link arm to be separated from each other, the stopping member restricting rotation of the main link arm.

[0034] Even when the housing cover is separated from the housing, the internal structure of the variable guide vane module and the driving states of the first and second link members may be discerned.

[0035] The rotating device may further include an actuator for driving the first link member, wherein even when the housing cover is separated from the housing, a driving state of the first link member and the second link member can be discriminated during driving of the actuator.

[0036] According to the foregoing and other embodiments of the present disclosure, the VGV module can be split into a first module and a second module, the first module including a blade housing and a first connecting rod member, and the second module including a shroud housing and a second connecting rod member. Therefore, the connecting rod connection structure of the VGV module can be identified by opening the housing cover. In addition, since the actuator is connected to the first connecting rod member and the second connecting rod member, the driving state of the first connecting rod member and the second connecting rod member during the driving of the actuator can be identified even when the housing cover is opened.

[0037] Other features and embodiments may be apparent from the following detailed description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other embodiments and features of the present disclosure will become more apparent by describing in detail embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0039] Figure 1 is a perspective view of a conventional guide vane module;

[0040] Figure 2 yes Figure 1 A plan view of a conventional guide vane module;

[0041] Figure 3 It is shown that the Figure 1 A perspective view of a blade adjustment structure in a conventional guide vane module;

[0042] Figure 4 It is shown that the use Figure 1 A perspective view of the exterior of a compressor of a conventional guide vane module;

[0043] Figure 5 is a perspective view showing a rotating device according to an embodiment of the present disclosure;

[0044] Figure 6 is a perspective view showing how a variable guide vane (VGV) module of a rotary device according to an embodiment of the present disclosure is internally coupled with the module being separated from a housing cover;

[0045] Figure 7 It is shown Figure 6 A perspective view of a first module of the VGV module;

[0046] Figure 8 It is shown Figure 6A perspective view of a second module of the VGV module;

[0047] Fig. 9 It is shown Figure 7 and Figure 8 A perspective view of how the first module and the second module are connected;

[0048] Fig.10 is a partial perspective view showing how a first link member and a second link member of a rotating device according to an embodiment of the present disclosure are coupled;

[0049] Fig.11 It is shown Figure 7 and Figure 8 A cross-sectional perspective view of how the first module and the second module are connected;

[0050] Fig. 12A and 12B is a top view showing how the first link member and the second link member of the rotating device according to the embodiment of the present disclosure operate;

[0051] Fig.13 is a partially enlarged view showing an upper portion of a blade housing of a rotating device according to an embodiment of the present disclosure;

[0052] Fig.14 is a partial cross-sectional perspective view showing how components of a second module of a rotating device according to an embodiment of the present disclosure are coupled;

[0053] Fig.15 yes Fig.11 An enlarged cross-sectional view of part A;

[0054] Fig.16A and 16B is a cross-sectional perspective view showing how the first link member and the second link member of the rotating device according to the embodiment of the present disclosure operate; and

[0055] Fig.17 is a partial cross-sectional perspective view showing how components around a control ring of a rotating device according to an embodiment of the present disclosure are coupled. DETAILED DESCRIPTION

[0056] Various changes may be made to the present disclosure, and the present disclosure may have various embodiments that will be described in detail with reference to the accompanying drawings. However, the embodiments according to the concept of the present disclosure are not interpreted as being limited to the specific disclosure, and include all changes, equivalents or substitutes that do not depart from the spirit and technical scope of the present disclosure.

[0057] The terms used in this disclosure are only used for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "including" or "having" used in this disclosure indicate the presence of the features, quantities, steps, operations, elements, parts or combinations thereof described in the specification, without excluding the presence or addition of one or more other features, quantities, steps, operations, elements, parts or combinations thereof.

[0058] Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meaning as those commonly understood by ordinary technicians in the relevant field. Unless clearly defined in this disclosure, terms defined in general dictionaries should be interpreted as having the same or similar meaning as the contextual meaning of the relevant technology, and should not be interpreted as having an ideal or exaggerated meaning.

[0059] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0060] Figure 5 is a perspective view showing a rotating device 100 according to an embodiment of the present disclosure. Figure 6 1 is a perspective view showing how a variable guide vane (VGV) module 100M of a rotary device 100 is internally coupled with a housing cover 130 separated therefrom.

[0061] Reference Figure 5 and Figure 6 , the rotating device 100 may include a housing 101, a VGV module 100M, an actuator 140, and a housing cover 130. The VGV module 100M may be configured to consist of two separable modules that can be coupled together, and when the housing cover 130 is removed, the structure and driving state of the link member 122c of the VGV module 100M may be easily discerned based on how the actuator 140 is driven.

[0062] The VGV module 100M may be provided on a surface of the housing 101. For example, the VGV module 100M may be provided on both sides of the housing 101 or may be provided only on one side of the housing 101. The VGV module 100M is a structure connected to the actuator 140 to be driven according to driving of the actuator 140. The VGV module 100M may be divided into at least two modules that may be separated from each other.

[0063] The housing cover 130 may be coupled to the housing 101 to cover a portion where the VGV module 100M is installed. When the housing cover 130 is opened at the housing 101, a driving state of the VGV module 100M may become discernible.

[0064] The actuator 140 may be formed to penetrate the VGV module 100M on the inner side of the housing 101 in a direction perpendicular to the housing 101. The actuator 140 may be coupled to the VGV module 100M (specifically, to the first link member 112 of the first module 110) to provide a driving force for driving the blades 122b provided in the second module 120.

[0065] The VGV module 100M divided into two modules will be described below.

[0066] Figure 7 is a perspective view showing the first module 110 of the VGV module 100M. Figure 8 is a perspective view showing the second module 120 of the VGV module 100M. Fig. 9 is a perspective view showing how the first module 110 and the second module 120 are coupled.

[0067] Reference Figures 7 to 9 The VGV module 100M may include at least two modules, ie, a first module 110 and a second module 120, and the first module 110 and the second module 120 may be configured to be detachable from each other.

[0068] The first module 110 and the second module 120 may be coupled to or separated from each other by a coupling member. For example, the first module 110 may be inserted into the second module 120 and may be bolted to the second module 120.

[0069] The first module 110 may include a blade shell 111 and a first link member 112 .

[0070] The blade shell 111 may form a cylindrical hollow space in the middle thereof, and the first link member 112 may be installed on the upper side of the outer circumferential surface of the blade shell 111 (specifically, installed at the 12 o'clock position of the blade shell 111). The actuator 140 for driving the first link member 112 may be located at the 12 o'clock direction of the blade shell 111.

[0071] The actuator 140 may be provided at the outside of the blade housing 111 to penetrate not only the outer shell 101 but also the shroud housing 121 to be described later.

[0072] The first link member 112 may be disposed on an outer circumferential surface of the blade shell 111 in a 12 o'clock direction of the blade shell 111 , and may be connected to the second link member 122 of the second module 120 to transmit driving of the actuator 140 to the second link member 122 .

[0073] The second module 120 may form a hollow space therein and may have one surface opened and another surface inserted inside the housing 101. The second module 120 may receive a driving force from the first link member 112 and may install a plurality of blades 122b and a structure for rotating the blades 122b therein.

[0074] The second module 120 may include a shroud housing 121 and a second link member 122 .

[0075] The shroud shell 121 may be located between the outer shell 101 and the blade shell 111. The shroud shell 121 may be located in the outer shell 101, and may be provided in a cylindrical shape and form a hollow space therein.

[0076] When the housing cover 130 covers the housing 101, the hollow space in the shield housing 121 may be closed. A hole may be formed at the bottom of the shield housing 121. The second link member 122 driven according to the driving of the first link member 112 may be provided in the shield housing 121. For example, some elements of the second link member 122 connected to the first link member 112 (e.g., the link piece 122c) may be formed on the inner side of the shield housing 121, and other elements of the second link member 122 (e.g., the control ring 122a) may be provided on the outer side of the bottom of the shield housing 121.

[0077] The first module 110 and the second module 120 separated from each other may be coupled together to form the VGV module 100M. When the housing cover 130 is removed from the housing 101, the elements of each of the first module 110 and the second module 120 may become identifiable. Figures 10 to 17 The first module 110 and the second module 120 are described.

[0078] Fig.10 1 is a partial perspective view showing how the first link member 112 and the second link member 122 are coupled. Fig.11 is a cross-sectional perspective view showing how the first module 110 and the second module 120 are coupled. Fig. 12A and Fig. 12B 1 is a top view showing how the first link member 112 and the second link member 122 operate. Fig.13 It is a partially enlarged view showing the upper portion of the blade housing 111 .

[0079] Reference Figures 10 to 13 , the first module 110 may include a blade shell 111 and a first link member 112 .

[0080] The blade shell 111 has been described above, and the above description of the blade shell 111 is directly applicable here.

[0081] The first link member 112 is a component provided at the 12 o'clock position on the outer circumferential surface of the blade housing 111, receives the drive of the actuator 140, and transmits the drive of the actuator 140 to the second link member 122. The first link member 112 may include a main shaft 112d, a main link arm 112a, a control arm 112b, and a pivot point 112c.

[0082] The main shaft 112d may be located at the top of the outer circumference of the blade shell 111. The main shaft 112d may be provided in a first direction to be connected to the actuator 140 provided to penetrate the outer shell 101 and the shroud shell 121.

[0083] The main link arm 112a is a component located at the top of the outer circumference of the blade housing 111 and connected and coupled to the main shaft 112d. The main link arm 112a is coupled to the main shaft 112d to extend in a second direction perpendicular to the first direction (i.e., in a horizontal direction from front to rear of the blade housing 111). The main link arm 112a may be provided to be able to rotate clockwise or counterclockwise vertically around the main shaft 112d according to the driving of the main shaft 112d.

[0084] The master link arm 112a may include a body 112aa and a slot 112ab.

[0085] The main body 112aa is connected to the main shaft 112d and rotates together with the main shaft 112d.

[0086] The groove 112ab may be provided to extend from the main body 112aa in the second direction. One end of the groove 112ab in the second direction may be open and may be formed in a U-shape having an angle in a cross-sectional view. Fig. 12A and 12B As shown in , the control arm 112b may be rotatably coupled to the slot 112ab. In order to prevent the slot 112ab from interfering with the rotation of the control arm 112b, the slot 112ab may be formed to open in an angular U-shape.

[0087] The first rotation guide member 181 may be disposed in the groove 112 ab , wherein the control arm 112 b , specifically, one end of the control arm 112 b (or the input end 112 ba of the control arm 112 b ) is rotatably inserted thereon.

[0088] The first rotation guide member 181 may include a first protrusion 181 a and a first rotation ball 181 b .

[0089] The first protrusion 181 a may be vertically formed between portions of the groove 112 ab in the first direction.

[0090] The first rotating ball 181 b may be formed as a sphere surrounding the first protrusion 181 a and may be inserted into the input end 112 ba of the control arm 112 b to allow the input end 112 ba of the control arm 112 b to rotate.

[0091] Stopper members 180 that restrict the rotation of the main link arm 112 a may be provided at both sides of the main link arm 112 a at the top of the outer circumference of the blade housing 111 .

[0092] The stopper member 180 may protrude vertically upward from the outer circumference of the blade housing 111. When the main link arm 112a rotates clockwise or counterclockwise according to the rotation of the main shaft 112d, the stopper member 180 may be in contact with the main link arm 112a, thereby limiting the rotation of the main link arm 112a.

[0093] The control arm 112 b may be connected to the main link arm 112 a , and may be formed to extend in the second direction (ie, in a front-to-rear direction of the blade housing 111 ).

[0094] The control arm 112b may include a body 112bb, an input end 112ba, and an output end 112bc.

[0095] The body 112bb may be formed to extend in the horizontal direction, and an input end 112ba and an output end 112bc may be formed at the end of the body 112bb. The input end 112ba is coupled to the groove 112ab, and the output end 112bc is coupled to the second link member 122 (specifically, coupled to the control ring 122a to be described later). The input end 112ba and the output end 112bc may be formed as rotation openings that can be rotatably coupled to the groove 112ab and the control ring 122a, respectively.

[0096] The rotation opening may be formed in a shape that is open in the first direction, that is, in a shape of a collective symbol. and subset symbols shape is formed.

[0097] The first rotating ball 181b may be located in the rotating opening of the input end 112ba for the rotation of the control arm 112b. In addition, the second rotating guide member 182 (specifically, the second rotating ball 182b) may be located in the rotating opening of the output end 112bc for the rotation of the control arm 112b. Therefore, the input end 112ba of the control arm 112b may be able to rotate clockwise or counterclockwise around the pivot point 112c according to the rotation of the main link arm 112a. In addition, the output end 112bc of the control arm 112b may be able to rotate clockwise or counterclockwise around the pivot point 112c according to the movement of the input end 112ba, and the output of the output end 112bc may be transmitted to the control ring 122a.

[0098] The pivot point 112c may be located at one end of the blade shell 111 (specifically, at the rear of the outer circumference of the blade shell 111 in the 12 o'clock direction of the blade shell 111), and may be connected to the control arm 112b (specifically, connected to a predetermined position on the body 112bb).

[0099] The control arm 112b may be coupled to the blade housing 111 so as to be rotatable around the pivot point 112c. The control arm 112b may be rotatable around the pivot point 112c and may move according to the driving of the main shaft 112d. Therefore, when the input end 112ba moves in the a direction, the output end 112bc may move in the c direction, and when the input end 112ba moves in the b direction, the output end 112bc may move in the d direction.

[0100] Fig.14 is a partial cross-sectional perspective view showing how the components of the second module 120 are coupled. Fig.15 yes Fig.11 An enlarged cross-sectional view of part A. Fig.16A and Fig. 16B 1 is a cross-sectional perspective view showing how the first link member 112 and the second link member 122 operate. Fig.17 is a partial cross-sectional perspective view showing how the components around the control ring 122a are coupled.

[0101] Reference Figures 14 to 17 The second module 120 may include a shield housing 121 and a second link member 122 .

[0102] The shield housing 121 is a component formed in a hat shape and coupled to the inside of the housing 101. The first module 110 may be accommodated in and coupled to the shield housing 121 so that the first link member 112 of the first module 110 and the second link member 122 of the second module 120 may be coupled together.

[0103] A plurality of through holes 121a may be formed at the bottom of the shroud housing 121 so that the blades 122b may be exposed outside the shroud housing 121 and may be rotatably coupled to the shroud housing 121. A bushing 160 for rotation of the blades 122b may be provided between the through holes 121a and the blades 122b.

[0104] The second link member 122 is a component driven by receiving a driving force from the first link member 112. Specifically, the second link member 122 may include a control ring 122a, a blade 122b, and a link piece 122c.

[0105] The control ring 122a may be located inside the bottom of the shield housing 121 and may be coupled to the output end 112bc of the control arm 112b. The control ring 122a may be provided to receive the output of the output end 122bc of the control arm 112b, and thus rotate around the hollow space inside the shield housing 121. The control ring 122a is a component that receives the output of the output end 112bc of the control arm 112b to rotate the blade 122b and may be formed in the shape of a ring.

[0106] A plurality of guide grooves 122ab may be formed between the outer circumferential surface and the inner circumferential surface of the control ring 122a along the circumferential direction of the control ring 122a. For example, three guide grooves 122ab may be formed. At least one of the guide grooves 122ab (specifically, the upper guide groove 122ab) may be configured to allow one end of the control arm 112b (e.g., the output end 112bc) to be inserted therein, and a component (e.g., the second rotation guide member 182) coupled to the output end 112bc may be disposed in the upper guide groove 122ab. The second rotation guide member 182 may rotate the control ring 122a according to the output of the output end 112bc.

[0107] As already mentioned above, the second rotation guide member 182 may be disposed in the upper guide groove 122ab, wherein the second rotation guide member 182 is a component that may receive the output of the output end 112bc due to the output end 112bc being inserted into one of the guide grooves 122ab (specifically, inserted into the upper guide groove 122ab).

[0108] The second rotation guide member 182 may be provided to be insertable into the U-shaped output end 112bc, and may include a second protrusion 182a and a second rotation ball 182b.

[0109] The second protrusion 182a may be formed to vertically protrude from a 12 o'clock position of the upper guide groove 122ab.

[0110] The second rotating ball 182b may be formed as a sphere surrounding the second protrusion 182a, and may be inserted into the output end 112bc of the control arm 112b for rotation of the control arm 112b.

[0111] The protruding pin 122aa may be formed on one surface of the control ring 122a (specifically, on the surface of the control ring 122a facing the shield housing 121) to protrude from the control ring 122a toward the blade 122b. The protruding pin 122aa may be inserted into and coupled to the groove portion 122cb of the link member 122c, so that the protruding pin 122aa may be connected to the link member 122c, which rotates the blade 122b.

[0112] The sliding pads 170 may be provided on both sides of the circumferential surface of the central opening of the control ring 122a. Since the sliding pads 170 are provided at both sides of the control ring 122a, the control ring 122a may rotate smoothly.

[0113] The blades 122 b are components connected to the control ring 122 a and configured to change their orientations while being opened and closed according to the rotation direction of the control ring 122 a .

[0114] The link member 122c is a component provided between the control ring 122a and the blade 122b to transmit the rotation of the control ring 122a to the blade 122b.

[0115] The link member 122c may include a coupling portion 122ca and a groove portion 122cb. The coupling portion 122ca may be coupled to the blade 122b. The groove portion 122cb may be provided to extend from the coupling portion 122ca in the second direction, and thus connected to the control ring 122a (specifically, to the protruding pin 122aa protruding from the control ring 122a).

[0116] As already mentioned above, the VGV module 100M can be split into the first module 110 including the blade housing 111 and the first link member 112 and the second module 120 including the shroud housing 121 and the second link member 122. Therefore, the link coupling structure of the VGV module 100M can be identified by opening the housing cover 130. In addition, since the actuator 140 is connected to the first link member 112 and the second link member 122, even in the case where the housing cover 130 is opened, the driving state of the first link member 112 and the second link member 122 during the driving of the actuator 140 can be identified.

[0117] Although embodiments are described above, it is meant that these embodiments describe all possible ways of the inventive concept of the present disclosure. More specifically, the words used in the specification are descriptive words rather than restrictive words, and it should be understood that various changes can be made without departing from the spirit and scope of the inventive concept of the present disclosure. In addition, the features of various implemented embodiments can be combined to form other embodiments of the present disclosure.

Claims

1. A rotating device, comprising: shell; a variable guide vane module disposed on a surface of the housing; as well as a housing cover, covering the variable guide vane module, The variable guide vane module is configured to be separable into at least two modules and includes a first module and a second module, wherein the first module includes a cylindrical blade shell arranged in the outer shell and a first connecting rod member arranged on the blade shell, and the second module includes a shroud shell located between the outer shell and the blade shell and a second connecting rod member arranged in the shroud shell and driven according to the driving of the first connecting rod member. The first connecting rod member comprises: a main shaft disposed in the housing along a first direction perpendicular to the blade housing; a main link arm coupled to the main shaft and extending in a second direction perpendicular to the first direction and thereby rotating in accordance with rotation of the main shaft; a control arm connected to the master link arm and formed to extend in the second direction; and A pivot point is located between the input end and the output end of the control arm and directly connects a portion of the control arm to one end of the blade shell and rotatably supports the control arm so that the control arm is configured to rotate about the pivot point.

2. The rotating device according to claim 1, wherein: The first module and the second module are provided to be coupled to or separated from each other by a coupling member.

3. The rotating device according to claim 1, wherein: The master link arm includes a body connected to the main shaft and a slot extending from the body in the second direction.

4. The rotating device according to claim 3, wherein: One end of the groove in the second direction is open, and the groove is formed to have an angular U-shape.

5. The rotating device according to claim 3, wherein: The first rotation guide member is disposed in the groove and inserted into one end of the control arm to rotate the one end of the control arm.

6. The rotating device according to claim 5, wherein: The first rotation guide member includes a first protrusion formed between portions of the groove, and a first rotation ball formed around the first protrusion for rotation of one end of the control arm.

7. The rotating device according to claim 3, wherein: The control arm includes a main body and the input end and the output end, the input end and the output end are arranged at both ends of the main body, and The input end and the output end are formed with rotation openings and thus are coupled to the groove and the second link member, respectively.

8. The rotating device according to claim 7, wherein: The rotating openings are respectively provided at both ends of the main body with a collective symbol " " and subset symbol " ” is open in the first direction.

9. The rotating device according to claim 7, wherein: The second link member includes: a control ring that rotates according to the rotation of the control arm around the pivot point; a plurality of blades that are connected to the control ring and change the orientation of the plurality of blades while being opened or closed; and a link member that is provided between the control ring and the blades and transmits the rotation of the control ring to the blades.

10. The rotating device according to claim 9, wherein: A plurality of guide grooves are formed between the outer circumferential surface and the inner circumferential surface of the control ring, and the output end of the control arm is inserted into the guide groove, and A second rotation guide member is formed in the guide groove to be inserted into the output end of the control arm.

11. The rotating device according to claim 10, wherein: The second rotation guide member includes: a second protrusion formed in the guide groove to protrude in the first direction; and a second rotation ball formed around the second protrusion for rotation of the output end of the control arm.

12. The rotating device according to claim 9, wherein: The link member includes a coupling portion coupled to the blade and a groove portion extending from the coupling portion in the second direction.

13. The rotating device according to claim 12, further comprising: A protruding pin is provided on one surface of the control ring to protrude toward the inside of the shield housing and is located in the groove portion.

14. The rotating device according to claim 9, wherein: A plurality of through holes are formed in the shroud housing, the blades rotatably passing through the through holes, and The rotating device further includes a bushing disposed between the through hole and the blade.

15. The rotating device according to claim 9, further comprising: Sliding pads are provided on both sides of a circumferential surface of the central opening of the control ring for rotation of the control ring.

16. The rotating device according to claim 9, wherein: When the first module is inserted into the shield housing, the output end of the control arm is inserted into the second rotation guide member, so that the first link member and the second link member are linked.

17. The rotating device according to claim 1, further comprising: Stopper members are provided on the blade housing at both sides of the main link arm to be separated from each other, and the stopper members restrict rotation of the main link arm.

18. The rotating device according to claim 1, wherein: Even when the housing cover is separated from the housing, the internal structure of the variable guide vane module and the driving states of the first link member and the second link member can be discerned.

19. The rotating device according to claim 1, further comprising an actuator for driving the first link member. in, Even when the housing cover is separated from the housing, the driving states of the first link member and the second link member can be discriminated during driving of the actuator.

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