WO2016064037A1

WO2016064037A1 - Inlet guide vane

Info

Publication number: WO2016064037A1
Application number: PCT/KR2015/002019
Authority: WO
Inventors: 최종원
Original assignee: 한화테크윈 주식회사
Priority date: 2014-10-24
Filing date: 2015-03-03
Publication date: 2016-04-28
Also published as: KR101960712B1; KR20160048536A; CN107076168A; CN107076168B

Abstract

Disclosed is an inlet guide vane. The present invention comprises: a housing; a vane part which is rotatably installed in the housing; a control ring installed in the housing to make a rotational movement along the outer peripheral surface of the housing; a control arm which connects the control ring and the vane and rotates in accordance with the rotation of the control ring; a main arm which is connected to the control ring to drive the control ring; a rotary shaft which is connected to the main arm to rotate the main arm, wherein a first distance from the rotary shaft to the portion where the main arm and the control ring are connected to each other is different from a second distance from the portion where the control ring contacts the control arm to the center of rotation of the vane.

Description

Inlet guide vanes

The present invention relates to an apparatus, and more particularly to an inlet guide vane.

The inlet guide vanes may be connected to the compressor to regulate the amount of gas or fluid flowing to the compressor. In this case, the inlet guide vanes may include a housing and a vane installed to be rotatable inside the housing. In addition, the inlet guide vane may include a driving unit for rotating the vane unit, and may have various structures connected to the driving unit.

The inlet guide vane as described above can adjust the amount of rotation of the vane by transmitting the driving force generated in the drive to the vane. At this time, the driving unit may be connected to one of the plurality of vanes to operate the connected vanes and at the same time rotate the control ring to rotate the other vanes of the plurality of vanes. In particular, when the driving unit is directly connected to the vane to rotate the vane, a large load may be generated in the driving unit.

Such inlet guide vanes are specifically disclosed in Japanese Patent Application Laid-Open No. 2005-023792 (published: 2005.01.27, Applicant: TOYOTA CENTRAL R & D LABS INC).

Embodiments of the present invention seek to provide an inlet guide vane.

One aspect of the present invention, the housing, the vane is rotatably installed in the housing, the control ring installed in the housing to rotate along the outer peripheral surface of the housing, and the control ring and the vane connecting, A control arm rotating according to the rotation of the control ring, a main arm connected to the control ring to drive the control ring, a rotation shaft connected to the main arm to rotate the main arm, and the rotation shaft The first distance from the main arm and the portion where the control ring is connected to the second distance from the portion in which the control ring and the control arm are in contact with the center of rotation of the vane may provide a different inlet guide vane.

Embodiments of the present invention can be operated through a simple structure.

1 is a perspective view showing an inlet guide vane according to an embodiment of the present invention.

FIG. 2 is an enlarged partial perspective view of portion A of FIG. 1.

3 and 4 are operation diagrams showing the operation of the main arm shown in FIG.

5 and 6 are operation diagrams showing the operation of the control arm shown in FIG.

FIG. 7 is a velocity triangle showing an inflow velocity into the impeller according to the opening degree of the vane illustrated in FIG. 1.

8 is a perspective view showing an inlet guide vane according to another embodiment of the present invention.

FIG. 9 is an enlarged perspective view illustrating part A of FIG. 8.

In the present embodiment, the first distance may be greater than the second distance.

In the present embodiment, the control ring, a control ring body portion that rotates along the outer circumferential surface of the housing, a first projecting portion formed to protrude from the control ring body portion, is inserted into the main arm, and the control It is formed to protrude from the ring body portion, it may have a second protrusion inserted into the control arm.

In the present embodiment, the main arm is provided with a main arm body in which a first insertion groove into which the first protrusion is inserted is formed, and the main arm body is provided in the main arm, and the first protrusion is formed from the first insertion groove. It may be provided with a departure prevention unit for preventing the departure.

Another aspect of the present invention, the housing, the vane is rotatably installed in the housing, the control ring installed in the housing to rotate along the outer circumferential surface of the housing, connecting the control ring and the vane, A control arm rotating according to the rotation of the control ring, a first connector connecting the control ring and the control arm, a main arm rotatably installed in the housing to drive the control ring, and the main arm; A second connector connecting the control ring and a rotation shaft connected to the main arm to rotate the main arm, a first distance from the rotation shaft to a portion to which the main arm and the second connector are connected; The second distance from the portion where the first connector and the control arm are connected to the center of rotation of the vane portion is different from the inlet guy De Bain can be provided.

In the present embodiment, the control ring, a control ring body portion that rotates along the outer circumferential surface of the housing, a first protrusion formed to protrude from the control body body, and connected to the first connector, and It is formed to protrude from the control body portion, it may have a second protrusion connected to the second connector.

In an embodiment, at least one end of the first connector and the second connector may have a ball joint shape.

Another aspect of the present invention is connected to the housing, a vane portion rotatably installed in the housing, a control ring installed in the housing to rotate along the outer circumferential surface of the housing, and the control ring. A first connection part for rotating a ring, and a second connection part connecting the control ring and the vane part and rotating the vane part according to the rotation of the control ring, wherein the first connection part rotates the control ring. The first angle and the second angle at which the second connecting portion rotates the vane may provide different inlet guide vanes.

In the present embodiment, the second angle may be larger than the first angle.

The invention will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms. It is provided to fully convey the scope of the invention to those skilled in the art, the invention being defined only by the scope of the claims. Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements. Or does not exclude additions. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.

1 is a perspective view showing an inlet guide vane according to an embodiment of the present invention. FIG. 2 is an enlarged partial perspective view of portion A of FIG. 1. 3 and 4 are operation diagrams showing the operation of the main arm shown in FIG. 5 and 6 are operation diagrams showing the operation of the control arm shown in FIG. FIG. 7 is a velocity triangle showing an inflow velocity into the impeller according to the opening degree of the vane illustrated in FIG. 1.

1 to 7, the inlet guide vane 100 includes a housing 110, a vane part 120, a control ring 130, a first connection part (not shown), a second connection part (not shown), and a rotary shaft ( 160 and the driving unit 170 may be included.

In this case, the housing 110 may have a space formed therein such that gas or fluid may move therein. The vane part 120 may be installed in the housing 110 to be rotatable.

The vane part 120 may include an insertion part 122 rotatably installed in the housing 110, and a wing part 121 connected to the insertion part 122 and installed in the housing 110. In this case, the vane 120 may adjust the cross-sectional area of the inside of the housing 110 by rotating the wing portion 121 in accordance with the rotation of the insertion portion 122.

The vane 120 may be provided in plurality. In this case, the plurality of vanes 120 may be disposed to be spaced apart from each other along the outer surface of the housing 110. In addition, the vane 121 of each vane 120 may provide a passage through which gas or fluid moves to the housing 110 by completely closing or partially opening the internal space of the housing 110 as the vane 120 rotates. .

Meanwhile, the control ring 130 may be installed on the outer surface of the housing 110. In this case, the housing 110 may be formed in a cylindrical shape, and the control ring 130 may be formed in a circular shape to be similar to the housing 110.

The control ring 130 includes a control ring body 131 rotatably installed in the housing 110, and a first protrusion 132 and a second protrusion 133 protruding from the control body body 131. It may be provided. The first protrusion 132 as described above may be connected to the first connection portion. In addition, the second protrusion 133 may be connected to the second connection portion.

In this case, the first protrusion 132 and the second protrusion 133 may be spaced apart from each other. In addition, a plurality of second protrusions 133 may be provided, and each second protrusion 133 may be connected to each vane part 120 to operate each vane part 120.

Meanwhile, the first connection part may include a main arm 140 connected to the first protrusion 132 and the rotation shaft 160. In this case, the main arm 140 may include a main arm body 141 in which a first insertion groove 141a is formed to insert the first protrusion 132. The first insertion groove 141a is formed in a long hole shape so that the first protrusion 132 may be moved at a predetermined distance. The main arm 140 may be provided in the main arm body 141 to include a departure preventing part 142 that prevents the first protrusion 132 from being separated from the first insertion groove 141a. At this time, the departure prevention part 142 may be installed to be fixed to the main arm body 141 at the end of the first insertion groove (141a).

The second connection part may include a control arm 150 connecting the second protrusion 133 and the vane part 120. In this case, the control arm 150 may have a second insertion groove 150a into which the second protrusion 133 is inserted. In addition, the control arm 150 may insert the insertion portion 122 of the vane 120 to transmit the rotation of the control ring 130 to the vane 120.

Meanwhile, the rotation shaft 160 may be installed to be rotatable in the housing 110. In this case, the support bracket 180 for supporting the rotation shaft 160 to be rotatable may be installed in the housing 110. The support bracket 180 may be formed to be at least partially bent and installed in the housing 110.

The driving unit 170 may be connected to the rotary shaft 160 as described above. In this case, the driving unit 170 may include a driving source directly connected to the rotary shaft 160. In another embodiment, the driving unit 170 may include a link connected to the rotary shaft 160 and a cylinder connected to the link. In another embodiment, the driving unit 170 may include a reducer connected to the rotary shaft 160 and a drive source connected to the reducer. In this case, the driving unit 170 is not limited to the above, and may include all devices and structures for rotating the rotating shaft 160. However, hereinafter, the driving unit 170 will be described in detail with reference to a case in which the driving unit 170 includes a driving source directly connected to the rotary shaft 160.

Meanwhile, the inlet guide vane 100 as described above may be connected to a compressor (not shown) to adjust the amount of air supplied to the compressor. In this case, the efficiency of the compressor may vary depending on the amount of gas or fluid supplied by the inlet guide vane 100.

In particular, referring to the velocity triangle of FIG. 7, the inflow velocity of the gas or fluid flowing into the impeller from the linear velocity I of the impeller outer diameter of the compressor and the flow velocity V of the gas or fluid in the cord direction of the vane 120 (W) can be calculated. In this case, as the size of the inflow velocity (W) increases, the flow rate inside the compressor may increase, and the compression efficiency of the compressor may increase due to the increase in the flow rate. Therefore, in the velocity triangle of FIG. 7, since the linear velocity I of the impeller is kept constant, the inflow velocity W can be increased by varying the direction or size of the flow velocity V as shown in FIG. have. In particular, the method of changing the flow rate (V) as described above can be achieved by changing the rotation angle of the vane portion (120).

Specifically, when the flow velocity (V) in the cord direction of the vane portion (121) of the vane portion (120) with respect to the flow direction of the gas or fluid increases at an angle of 90 degrees to the linear velocity (I) of the impeller inflow rate (W) can be large. In this case, the cord of the wing 121 refers to the center line of the cross section perpendicular to the longitudinal direction of the wing 121.

Therefore, in order to form a large angle formed between the flow rate (V) and the linear speed (I) of the impeller, it is necessary to rotate the wing portion 121 more than before. In particular, in the above case, it is preferable that the inlet guide vane 100 adjusts the rotation angle of the wing 121 with a simple structure in order to reduce manufacturing cost and simplify manufacturing.

Meanwhile, the inlet guide vane 100 as described above may be installed in the compressor. At this time, gas or fluid may flow along the housing 110 of the inlet guide vane 100. As described above, when the gas or the fluid flows, the vane 120 rotates to control the amount of the gas or the fluid passing through the housing 110.

In detail, when the driving unit 170 operates, the driving unit 170 may rotate the rotation shaft 160. In this case, the rotation shaft 160 may rotate the main arm 140. The main arm 140 may rotate to rotate the first protrusion 132, and the first protrusion 132 may rotate the control ring 130. The departure prevention part 142 may prevent the first protrusion 132 from being separated from the first insertion groove 141a when the main arm 140 is rotated.

When the control ring 130 rotates as described above, the control arm 150 may rotate while the second protrusion 133 connected to the control ring 130 rotates. In this case, the control arm 150 may be connected to the insertion part 122 to rotate the insertion part 122. In addition, the insertion portion 122 may partially open the internal space of the housing 110 by rotating the wing portion 121.

As described above, the first distance S1 from the rotation shaft 160 to the portion of the main arm 140 contacting the first protrusion 132 contacts the control arm 150 from the rotation center of the insertion part 122. The second distance S2 to the portion of the second protrusion 133 may be different.

In this case, the first distance S1 may be larger than the second distance S2. In detail, when the first distance S1 is greater than the second distance S2, the vane 120 may rotate more than the rotation of the main arm 140 even if the main arm 140 rotates less. In particular, the first angle θ1 at which the control ring 130 rotates may be larger than the second angle θ2 at which the vane 120 rotates. In this case, the first angle θ1 may be an angle at which the main arm 140 rotates, and the second angle θ2 may be an angle at which the control arm 150 rotates. For example, when the first angle θ1 forms 45 degrees, the second angle θ2 may form 50 degrees. That is, even if the control ring 130 rotates by 45, the vane 120 may rotate 50 degrees to open the inside of the housing 110. Therefore, the driver 170 may rotate the vane 120 while consuming a small amount of energy. In addition, the opening degree of the vane 120 may be easily increased to increase the inflow rate W flowing into the compressor.

When the vane 120 rotates as described above, the gas or fluid introduced according to the rotation of the impeller of the compressor may be compressed and supplied to the outside.

Accordingly, the inlet guide vane 100 may rotate the vane 120 using a small amount of energy, and may rotate the vane 120 through a simple structure. In addition, the inlet guide vane 100 may minimize the load applied to the driving unit 170 when the vane 120 is rotated.

4 is a perspective view showing an inlet guide vane according to another embodiment of the present invention. FIG. 5 is an enlarged perspective view showing part A of FIG. 4.

4 and 5, the inlet guide vane 200 includes a housing 210, a vane portion 220, a control ring 230, a first connection portion 240, a second connection portion 250, and a rotary shaft ( 260 and the driving unit 270 may be included.

In this case, the housing 210, the vane 220, the control ring 230, the rotary shaft 260, and the driver 270 are the same as or similar to those described above, and thus a detailed description thereof will be omitted.

The first connector may connect the first protrusion 232 and the rotation shaft 260. In this case, the first connection part may include a main arm 241 connected to the rotary shaft 260, and a first link part 242 connecting the main arm 241 and the first protrusion 232.

One end of the first link unit 242 may be connected to the main arm 241, and the other end thereof may be connected to the first protrusion 232. In this case, at least one of both ends of the first link portion 242 may be formed as a ball joint type. In particular, when the main arm 241 rotates, the first link unit 242 may be connected to the end of the main arm 241 to rotate the first protrusion 232.

The second connector 250 may connect the second protrusion 233 and the vane 220. At this time, the second connector 250 is similar to the first connector 240, the control arm 251 is connected to the insertion portion 222 of the vane 220, the control arm 251 and the second protrusion 233 ) May be provided with a second link unit 252. In this case, the second link portion 252 may be formed in a ball joint type end so as to be similar to the first link portion 242.

The first connection part 240 and the second connection part 250 as described above may be formed in various ways in addition to the above case. For example, the first connector 240 includes the main arm 241 as described above with reference to FIGS. 1 to 7, and the second connector 250 includes the control arm 251 and the second connector as described above. The link unit 252 may be provided. In another embodiment, the first connector 240 includes the main arm 241 and the first link unit 242 as described above, and the second connector 250 is as described above with reference to FIGS. 1 to 7. The controller 251 may be provided. At this time, the first connector 240 and the second connector 250 is not limited to the above, the first connector 240 is connected to the rotary shaft 260 to control the rotation of the rotary shaft 260 (230) Can include any device and any structure that delivers In addition, the second connector 250 may include all devices and all structures connected to the vane 220 and the control ring 230 to transmit the rotation of the control ring 230 to the vane 220. However, hereinafter, for convenience of description, the first connection part 240 includes a main arm 241 and a first link part 242, and the second connection part 250 includes a control arm 251 and a second link part. A case in which 252 is provided will be described in detail below.

On the other hand, referring to the operation of the inlet guide vane 200 as described above, it can proceed similarly to that described above. Specifically, when the driving unit 270 operates, the main shaft 241 may be rotated by rotating the rotary shaft 260. The main arm 241 may rotate the control body 231 by applying the first protrusion 232 through the first link unit 242.

Thereafter, when the second protrusion 233 rotates according to the rotation of the control body 231, the control arm 251 rotates through the second link unit 252, and the vane part according to the rotation of the control arm 251. 220 may rotate.

In this case, the first link S1 from the center of rotation of the rotary shaft 260 to the portion of the main arm 241 to which the first link unit 242 is connected and the second link unit from the center of rotation of the vane unit 220. The second distance S2 to the portion of the control arm 251 to which the 252 is connected may be formed differently. In addition, the first angle (not shown) in which the control ring 230 rotates may be different from the second angle (not shown) in which the vane 220 rotates. In this case, the first angle may be an angle at which the main arm 241 is rotated from the initial position of the main arm 241 as described above, and the second angle is the control arm from the initial position of the control arm 251. The angle 251 may be rotated.

In detail, the first distance S1 may be greater than the second distance S2, and the first angle may be smaller than the second angle. In particular, since the first distance S1 is larger than the second distance S2, the vane 220 may rotate a lot even if the main arm 241 rotates less. Therefore, the second angle is larger than the first angle, so that the vane 220 may rotate a lot even if the control ring 230 rotates less.

The inlet guide vane 200 may rotate the vane 220 using a small amount of energy, and may rotate the vane 220 through a simple structure. In addition, the inlet guide vane 200 may minimize the load applied to the driving unit 270 when the vane 220 is rotated.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will include such modifications and variations as long as they fall within the spirit of the invention.

According to one embodiment of the present invention, by providing an inlet guide vane that can be operated by simple operation, embodiments of the present invention can be applied to a compressor, an engine, or the like for compressing a gas or a fluid and supplying it to another device.

Claims

housing;

A vane unit rotatably installed in the housing;

A control ring installed in the housing to rotate along the outer circumferential surface of the housing;

A control arm that connects the control ring and the vane and rotates according to the rotation of the control ring;

A main arm connected to the control ring to drive the control ring; And

And a rotation shaft connected to the main arm to rotate the main arm.

An inlet guide vane having a first distance from the rotation shaft to a portion at which the main arm and the control ring are connected to a second distance from a portion at which the control ring and the control arm are in contact to a center of rotation of the vane portion.
The method of claim 1,

The first inlet guide vane is formed larger than the second distance.
The method of claim 1,

The control ring,

A control ring body configured to rotate along the outer circumferential surface of the housing;

A first protrusion protruding from the control ring body and inserted into the main arm; And

An inlet guide vane formed protruding from the control ring body and inserted into the control arm.
The method of claim 3, wherein

The main arm,

A main arm body in which a first insertion groove into which the first protrusion is inserted is formed; And

An inlet guide vane installed in the main arm body to prevent the first protrusion from being separated from the first insertion groove.
housing;

A vane unit rotatably installed in the housing;

A control ring installed in the housing to rotate along the outer circumferential surface of the housing;

A control arm that connects the control ring and the vane and rotates according to the rotation of the control ring;

A first connector connecting the control ring and the control arm;

A main arm rotatably installed in the housing to drive the control ring;

A second connector connecting the main arm and the control ring; And

And a rotation shaft connected to the main arm to rotate the main arm.

An inlet guide vane having a first distance from the rotation shaft to a portion at which the main arm and the second connector are connected, and a second distance from a portion at which the first connector and the control arm are connected to a center of rotation of the vane portion.
The method of claim 5, wherein

The first inlet guide vane is formed larger than the second distance.
The method of claim 5, wherein

The control ring,

A control ring body configured to rotate along the outer circumferential surface of the housing;

A first protrusion protruding from the control ring body and connected to the first connector; And

An inlet guide vane formed protruding from the control ring body and connected to the second connector.
The method of claim 5, wherein

At least one end of the first connector and the second connector is inlet guide vane in the form of a ball joint.
housing;

A vane unit rotatably installed in the housing;

A control ring installed in the housing to rotate along the outer circumferential surface of the housing;

A first connection part connected to the control ring and rotating the control ring; And

And a second connection part connecting the control ring and the vane part to rotate the vane part according to the rotation of the control ring.

An inlet guide vane different from a first angle at which the first connector rotates the control ring and a second angle at which the second connector rotates the vane.
The method of claim 9,

The second angle of the inlet guide vane is formed larger than the first angle.