JP5446969B2 - Compressor - Google Patents

Description

  The present invention relates to a compressor.

  Generally, in a compressor, a turbine impeller and a compressor impeller are arranged on the same rotation shaft, and the compressor impeller is rotated by a rotational drive of the turbine impeller so as to improve the performance of the internal combustion engine.

  As shown in FIG. 9, the compressor impeller 1 is disposed in the compressor housing 2, and the compressor housing 2 absorbs the intake air sucked into the flow path by the action of the centrifugal force due to the rotation of the compressor impeller 1, and the scroll passage. It is configured so that it can be fed to 3b or the like.

  A housing 4 forming an internal flow path 5 is fixed in the compressor housing 2 on the upstream side of the compressor impeller 1, and the internal flow path 5 of the housing 4 has a diameter from the intake side toward the compressor impeller 1 side. A small cylindrical configuration is provided, and a plurality of fan-shaped variable inlet guide vanes (hereinafter referred to as vanes) 6 are installed in the internal flow path 5. In the figure, a solid line indicates a state in which the vane 6 is closed, and a virtual line indicates a state in which the vane 6 is opened.

  On the other hand, the vane 6 is provided with a rotation shaft 10 so as to be able to rotate in the internal flow path 5, and the rotation shaft 10 is accommodated in the through hole 8 of the housing 4. A gear 12 disposed in the internal space 7 of the housing 4 is provided on the same axis of all the rotating shafts 10. Further, a drive transmission member 13 inserted into the through hole 9 of the compressor housing 2 is connected to one of the plurality of rotating shafts 10, and an actuator is connected to the drive transmission member 13 outside the compressor housing 2. A driving means 14 such as is connected. Furthermore, an annular gear 15 that meshes with the gears 12 of all the rotating shafts 10 is installed in the annular inner space 7. In FIG. 9, reference numeral 11 denotes a sealing body that closes the gap, and reference numeral 16 denotes a biasing means 16 such as a leaf spring that biases the gear 15.

  When the opening degree of the vane 6 is adjusted by the driving means 14, power is transmitted from the rotary shaft 10 connected to the drive transmission member 13 to the vane 6 and via the gear 15 and the other rotary shaft 10. Power is transmitted to the other vanes 6, and the opening degree of all the vanes 6 is adjusted. As a result, when the flow rate of intake air is small, the opening of the vane 6 can be adjusted to rectify the compressor impeller 1 to the incident angle.

  As prior art document information related to the present invention, for example, the following patent documents 1 and 2 already exist.

JP 58-185999 A JP-A-6-264899

  However, since the compressor arranges the drive transmission member 13 and the drive means 14 that rotate the vane 6 outside the compressor housing 2, a large installation space is required when the compressor is mounted on a vehicle or the like. There was a problem that it was difficult to mount on a vehicle or the like. Further, when the driving means 14 such as an actuator is used, there is a problem that the manufacturing cost increases because an electric configuration and a control unit (not shown) are required.

  In view of such circumstances, the present invention is intended to provide a compressor that saves space and suppresses manufacturing costs.

A compressor according to the present invention is provided on the upstream side of a compressor impeller of a compressor, a housing in which intake air flows into an internal flow path, and is disposed along an inner circumferential direction of the internal flow path of the housing and via a rotating shaft. A compressor comprising a plurality of rotating vanes,
The housing includes an internal space located around the internal flow path so as to dispose a part of the rotation shaft of the vane, and a communication hole connecting the internal space and the internal flow path ,
The internal space includes an elastic means supported at one end, a receiving portion positioned at the other end of the elastic means and urged by the elastic means, and connected to the rotating shaft of the vane and sliding the receiving portion. A transmission member that can slide on the moving surface;
When the intake flow rate changes to open the vane, the vane is rotated based on the intake flow rate from the upstream side and the elastic means is pushed in via the transmission member and the receiving portion by the rotational force of the rotation shaft. ,
When the intake flow rate changes and the vane is closed, the elastic means is repelled on the basis of the intake flow rate from the upstream side and the vane is moved in the reverse direction via the receiving portion and the transmission member by the elastic force of the elastic body. Rotate
The receiving section may move within the interior space based on the negative pressure difference in the housing, which is constituted to so that to assist the rotation of the vane.

  Furthermore, in the compressor according to the present invention, the internal space is configured in an annular shape surrounding the periphery of the internal flow path, and the receiving portion is configured in an annular body extending along the annular direction of the internal space. It is preferable to be configured to receive a rotational force from the rotating shaft of the vane via the transmission member.

  According to the compressor of the present invention, since the opening degree of the vane is adjusted based on the flow rate of the intake air by the elastic means, the receiving portion, and the transmission member arranged in the internal space in the housing, the compressor is arranged outside the housing. It is possible to save the space of the compressor by eliminating the vane driving means and the like, so that the compressor can be easily mounted on a vehicle or the like. Further, compared with the conventional example in which the driving means such as an actuator is arranged, the driving means, the electric configuration, the control unit, and the like are unnecessary, so that an excellent effect that the manufacturing cost can be suppressed can be obtained.

It is a conceptual diagram which shows the reference example of the compressor of this invention. It is a reference example of the compressor of this invention, and is a conceptual diagram which shows the state which opened the vane with the flow volume of the intake air. It is a reference example of the compressor of this invention, and is an expanded sectional view which shows an internal space and the structure of the vicinity. It is a reference example of the compressor of this invention, and is a conceptual diagram which shows a rotating shaft, a transmission member, a receiving part, and an elastic means in the state which closed the vane with the flow volume of the intake air. It is a reference example of the compressor of this invention, and is a conceptual diagram which shows a rotating shaft, a transmission member, a receiving part, and an elastic means in the state which opened the vane with the flow volume of the intake air. It is a conceptual diagram which shows the 1st example of the compressor of this invention. It is a conceptual diagram which shows the state which was the 1st example of the compressor of this invention, and opened the vane by the flow volume and negative pressure of intake air. It is a first example of the compressor of the present invention, and is an enlarged sectional view showing an internal space and a structure in the vicinity thereof. It is a conceptual diagram which shows the conventional compressor.

Hereinafter, a reference example of an embodiment of the present invention will be described together with illustrated examples.

1 to 5 are reference examples for carrying out the present invention. In the figure, the same reference numerals as those in FIG. 9 denote the same parts.

The compressor of the reference example of the embodiment is disposed along the inner circumferential direction of the internal flow path 5 of the housing 17 provided on the upstream side of the compressor impeller 1 and in which the intake air flows into the internal flow path 5. And a plurality of vanes 6 that rotate via a rotation shaft 10.

  The housing 17 includes an annular internal space 18 positioned around the internal flow path 5 so as to dispose the tip of the rotating shaft 10 of the vane 6, and the internal flow path 5 on the axis of the plurality of vanes 6. A plurality of through holes 8 penetrating from the first to the inner space 18 are provided. Here, the configuration of the housing 17 is not particularly limited, and a housing member 17b that forms the internal flow path 5 may be fixed in the compressor housing 17a as shown in FIG. The housing member 17b may be fixed to the compressor housing 17a after the housing member 17b is assembled. Further, when the housing member 17b is provided in the compressor housing 17a, a groove-shaped notch 8a (on the housing member 17b side in FIGS. 1 to 3) is formed on one of the contact surface of the compressor housing 17a or the contact surface of the housing member 17b. The through hole 8 may be formed by forming it, or the through hole 8 may be formed by forming a groove-shaped notch 8a on both the contact surface of the compressor housing 17a and the contact surface of the housing member 17b. Further, the housing member 17b may be formed by integral molding (casting, injection molding, etc.). The material of the housing member 17b is not particularly limited, and may be a cast product made of metal or the like, or an injection molded product made of polymer or the like.

  A receiving portion 21 is disposed in the internal space 18 of the housing 17. An elastic means 20 is disposed between the inner concave portion 19 of the housing 17 and the receiving portion 21, and the receiving portion 21 is urged by the elastic means 20. It has become so. Here, the elastic means 20 is configured by a coil spring that circulates along the annular inner space 18, but is not limited to a coil spring, and other configurations and materials such as a leaf spring and rubber as long as it is a linear spring. It may be constituted by. The receiving portion 21 is configured by an annular body extending along the annular direction of the internal space 18, and a recess 22 for fixing the other end of the elastic means 20 is provided on one surface of the receiving portion 21. At the same time, a smooth sliding surface 23 is formed on the other surface.

  Further, the housing 17 has gaps S1 and S2 so as to allow the internal space 18 and the internal flow path 5 to communicate with each other as shown in FIG. Here, the gap S1 exists between the inner surface of the compressor housing 17a and the outer surface of the housing member 17b, and the gap S2 exists between the through hole 8 and the rotating shaft 10.

  Furthermore, the internal space 18 is provided with a transmission member 24 that is externally fitted and connected to the tip of the rotary shaft 10 of the vane 6. The transmission member 24 extends from the tip of the rotating shaft 10 of the vane 6 to the sliding surface 23 of the receiving portion 21 and is arcuate so that it can slide relative to the sliding surface 23 of the receiving portion 21 on the leading end side. A contact portion 24a is formed. Here, the vane 6 and the transmission member 24 may be integrally formed, or another intermediate member may be interposed. Further, as long as the transmission member 24 is connected to the rotating shaft 10, it may be connected to another position, or another member may be interposed.

  On the other hand, all the vanes 6 act on the elastic means 20 through the ring-shaped receiving part 21 by the rotating shaft 10 and the transmission member 24. When the elastic means 20 has a free length, all the vanes 6 The minimum opening posture shown in FIG. 1 is obtained. That is, the opening degree of the vane mechanism is set to be minimum (fully closed). Further, when the elastic means 20 is at the maximum compression, all the vanes 6 have the maximum opening posture shown in FIG. That is, the opening degree of the vane mechanism is set to be maximum.

The operation of the reference example of the embodiment for carrying out the present invention will be described below.

  When the compressor impeller 1 is rotated by driving a turbine impeller (not shown) by the flow velocity of exhaust gas or the like, the intake air is compressed by the rotation of the compressor impeller 1 and is supplied to the diffuser 3a and the scroll passage 3b.

  At this time, when the vane 6 is closed as shown in FIG. 1, when the intake flow rate increases and the vane 6 is opened, the vane 6 is based on the intake flow rate from the upstream side as shown in FIG. The transmission member 24 is rotated by the rotational force of the rotation shaft 10 along with the rotation of the vane 6, the receiving member 21 is further moved by the transmission member 24, and the elastic means 20 is pushed in.

  On the other hand, when the vane 6 is opened as shown in FIG. 2, when the intake flow rate decreases and the vane 6 is closed, the elastic means 20 is based on the intake flow rate from the upstream side as shown in FIG. The receiving part 21 is moved in the reverse direction by the elastic force of the elastic body, and the transmission member 24 is rotated in the reverse direction along with the movement of the receiving part 21, and the rotating shaft 10 of the vane 6 is moved in the reverse direction. Rotate to turn the vane 6 in the closing direction.

  Then, the opening of the vane 6 is adjusted according to the flow rate of the intake air, and the intake air is brought into an appropriate state and compressed by the compressor impeller 1.

Thus, according to the reference example of the embodiment as described above, the opening degree of the vane 6 is changed to the flow rate of the intake air by the elastic means 20, the receiving portion 21, and the transmission member 24 arranged in the internal space 18 in the housing 17. Therefore, the drive means 14 of the vane 6 disposed outside the housing 17 is not required, and the compressor can be saved in space. Therefore, the compressor can be easily mounted on a vehicle or the like. Further, compared with the conventional example in which the driving unit 14 such as an actuator is disposed, the driving unit 14, the electric configuration, the control unit, and the like are not required, so that the manufacturing cost can be suppressed.

In the reference example of the embodiment, the internal space 18 is configured in an annular shape that surrounds the periphery of the internal flow path 5, and the receiving portion 21 is an annular body that extends along the annular direction of the internal space 18. If configured and configured to receive the rotational force from all the vanes 6, the configuration for rotating all the vanes 6 is simplified, so that the space can be saved and the manufacturing cost can be suppressed. Further, when the vane 6 is rotated in the opening direction, all the rotational force of the vane 6 is transmitted to the elastic means 20 through the rotating shaft 10, the transmission member 24, and the receiving portion 21, and the vane 6 is closed. , The elastic force of the elastic means 20 is transmitted to all the vanes 6 via the receiving portion 21, the transmission member 24, and the rotation shaft 10, so that the force is evenly applied to all the vanes 6. By acting, the opening degree of the vane 6 can be suitably adjusted.

Hereinafter, a first example of an embodiment of the present invention will be described with reference to FIGS. In the figure, the same reference numerals as those in FIGS. 1 to 5 denote the same components.

As in the reference example , the compressor of the first example of the embodiment includes a housing 25 in which intake air flows into the internal flow path 5 on the upstream side of the compressor impeller 1 of the compressor, and an internal flow path 5 of the housing 25. And a plurality of vanes 6 arranged along the circumferential direction and rotating via a rotation shaft 10. Here, the vane 6, the rotating shaft 10, the transmission member 24, and the elastic means 20 are configured similarly to the reference example .

  The housing 25 includes an annular internal space 26 positioned around the internal flow path 5 and a plurality of through holes 8 penetrating from the internal flow path 5 to the internal space 26 on the axes of the plurality of vanes 6. ing. Here, the configuration of the housing 25 is not particularly limited. As shown in FIG. 6, the housing member 25b forming the internal flow path 5 may be fixed in the compressor housing 25a, and the housing member 25b may be further fixed. The housing member 25b may be fixed to the compressor housing 25a after the housing member 25b is assembled. Further, when the housing member 25b is provided in the compressor housing 25a, a groove-shaped notch 8a (in the housing member 25b side in FIGS. 6 to 8) is formed on one of the contact surface of the compressor housing 25a or the contact surface of the housing member 25b. The through hole 8 may be formed by forming it, or the through hole 8 may be formed by forming a groove-shaped notch 8a on both the contact surface of the compressor housing 25a and the contact surface of the housing member 25b. Further, the housing member 25b may be formed by integral molding (casting, injection molding, etc.). The material of the housing member 25b is not particularly limited, and may be a cast product made of metal or the like, or an injection molded product made of polymer or the like.

  A receiving portion 28 is disposed in the internal space 26 of the housing 25, and the receiving portion 28 partitions the internal space 26 into a first space 26 a and a second space 26 b on the rotating shaft side on the left and right. Further, in the first space 26a, an elastic means 20 sandwiched between the inner concave portion 19 of the housing 25 and the receiving portion 28 is disposed, and the receiving portion 28 is urged by the elastic means 20. . Furthermore, the end part of the transmission member 24 and the rotating shaft 10 is arrange | positioned in the 2nd space 26b.

  The receiving portion 28 is constituted by an annular body extending along the annular direction of the internal space 26, and a concave portion 29 for fixing the other end of the elastic means 20 is provided on one surface of the receiving portion 28, A smooth sliding surface 30 is formed on the other surface. Further, seal members 31 and 32 are disposed on the outer peripheral surface and the inner peripheral surface of the receiving portion 28. Here, the seal member 31 is not particularly limited, and a piston ring (made of metal), an O-ring (made of resin), or the like may be used.

  In addition, the seal member 31 provided on the outer peripheral surface side of the receiving portion 28 is attached to the outer peripheral surface of the receiving portion 28, and the inner peripheral surface (the outer peripheral side of the receiving portion 28 on the outer peripheral side of the inner space 26). The gap between the inner peripheral surface and the outer peripheral surface of the receiving portion 28 is airtightly closed. Further, the seal member 32 provided on the inner peripheral surface side of the receiving portion 28 is attached to the inner peripheral surface of the receiving portion 28, and the inner peripheral surface on the inner peripheral side of the internal space 26 (by the receiving portion 28). And the gap between the inner peripheral surface and the inner peripheral surface of the receiving portion 28 is hermetically closed. That is, in the internal space 26, the first space 26 a and the second space 26 b are partitioned so as not to communicate with each other by the receiving portion 28 and the two seal members 31 and 32.

  Further, the housing 25 is provided with a communication hole 27 that allows the first space 26 a to communicate with the internal flow path 5. On the side of the internal flow path 5, the communication hole 27 is opened between the impeller 1 and the vane 6 (that is, downstream of the vane 6 and upstream of the impeller 1). In addition, the form of the communication hole 27 is not specifically limited, For example, you may provide the some communication hole 27 along with the circumferential direction so that the circumference | surroundings of the internal flow path 5 may be enclosed. Further, as shown in FIG. 8, the housing 25 has gaps S <b> 1 and S <b> 2 so that the second space 26 b communicates with the internal flow path 5 on the upstream side of the communication hole 27. Here, the gap S1 exists between the inner surface of the compressor housing 25a and the outer surface of the housing member 25b, and the gap S2 exists between the through hole 8 and the rotating shaft 10. The second space 26b is partitioned from the first space 26a as described above, and is communicated directly to the same position as the communication hole 27 in the intake air flow direction or to the downstream side of the communication hole 27. It will never be done.

  In the first space 26 a and the second space 26 b of the internal space 26, when the negative pressure on the compressor impeller 1 side in the housing 25 increases due to the driving of the compressor, the first space 26 is connected via the communication hole 27. When the negative pressure of 26a becomes larger than that of the second space 26b and the negative pressure on the compressor side in the housing 25 is normal, the first space 26a and the second space 26b have substantially the same negative pressure. Here, the second space 26b is substantially the same as the negative pressure or the atmospheric pressure of the intake air before passing through the vane 6 by the gaps S1 and S2.

The operation of the first embodiment of the present invention will be described below.

  When the compressor impeller 1 is rotated by driving the turbine impeller with a flow rate of exhaust gas or the like, the intake air is compressed by the rotation of the compressor impeller 1 and supplied to the diffuser 3a and the scroll passage 3b.

At this time, when the vane 6 is closed as shown in FIG. 6, when the intake flow rate increases and the vane 6 is opened, the vane 6 is based on the intake flow rate from the upstream side as in the reference example. The transmission member 24 is rotated by the rotational force of the rotary shaft 10 as the vane 6 rotates, and the receiving portion 28 is moved by the transmission member 24 to push the elastic means 20. At the same time, in the housing 25, the difference between the negative pressure on the compressor impeller 1 side and the negative pressure on the intake side increases, and the pressure in the space near the opening of the communication hole 27 becomes lower than the pressure near the opening of the gap, The negative pressure difference between the first space 26a and the second space 26b is also increased based on the negative pressure difference in the housing 25, and the receiving portion 28 is moved toward the first space 26a in the internal space 26 as shown in FIG. 20 is pushed in and it assists in the direction which opens the vane 6. FIG.

On the other hand, when the vane 6 is opened as shown in FIG. 7, when the intake air flow rate decreases and the vane 6 is closed, the elastic means 20 is based on the intake air flow rate from the upstream side as in the reference example. Is repelled and the receiving portion 28 is moved in the reverse direction by the elastic force of the elastic body, the transmitting member 24 is rotated in the reverse direction by the receiving portion 28, and the rotating shaft 10 of the vane 6 is further rotated in the reverse direction. The vane 6 is rotated in the closing direction. At the same time, in the housing 25, the difference between the negative pressure on the compressor impeller 1 side and the negative pressure on the intake side is reduced, and the difference between the pressure in the space near the opening of the communication hole 27 and the pressure in the vicinity of the opening of the gap is reduced. The negative pressure difference between the first space 26a and the second space 26b is also reduced based on the negative pressure difference in the housing 25, and the receiving portion 28 is returned to the second space 26b side in the internal space 26 as shown in FIG. Assist in the direction of closing.

  Then, the opening of the vane 6 is adjusted according to the flow rate of the intake air, and the intake air is brought into an appropriate state and compressed by the compressor impeller 1.

Thus, according to the first example of the embodiment as described above, it is possible to obtain the same effect as the reference example .

In the first example of the embodiment , the housing 25 includes the communication hole 27 that connects the internal space 26 and the internal flow path 5, and the receiving portion 28 is based on the negative pressure difference in the housing 25. Since it is configured to move inside and assist the rotation of the vane 6, the space can be saved and the vane 6 can be easily and suitably rotated.

  The compressor according to the present invention is not limited to the illustrated example described above, and the compressor housing and the housing member may have other shapes, and various other modifications may be made without departing from the gist of the present invention. Of course, changes can be made.

DESCRIPTION OF SYMBOLS 1 Compressor impeller 5 Internal flow path 6 Vane 10 Rotating shaft 17 Housing 18 Internal space 19 Recess 20 Elastic means 21 Receiving part 22 Recess 23 Slide surface 24 Transmission member 25 Housing 26 Internal space 27 Connecting hole 28 Receiving part

Claims (2)

A housing provided on the upstream side of the compressor impeller of the compressor and into which the intake air flows into the internal flow path; and a plurality of vanes disposed along the inner circumferential direction of the internal flow path of the housing and rotated via a rotation shaft A compressor comprising:
The housing includes an internal space located around the internal flow path so as to dispose a part of the rotation shaft of the vane, and a communication hole connecting the internal space and the internal flow path ,
The internal space includes an elastic means supported at one end, a receiving portion positioned at the other end of the elastic means and urged by the elastic means, and connected to the rotating shaft of the vane and sliding the receiving portion. A transmission member that can slide on the moving surface;
When the intake flow rate changes to open the vane, the vane is rotated based on the intake flow rate from the upstream side and the elastic means is pushed in via the transmission member and the receiving portion by the rotational force of the rotation shaft. ,
When the intake flow rate changes and the vane is closed, the elastic means is repelled on the basis of the intake flow rate from the upstream side and the vane is moved in the reverse direction via the receiving portion and the transmission member by the elastic force of the elastic body. Rotate
The receiving unit includes a compressor, characterized in that to move the inner space based on the negative pressure difference in the housing, and configured to so that to assist the rotation of the vane. The internal space is configured in an annular shape surrounding the periphery of the internal flow path, and the receiving portion is configured in an annular body extending along the annular direction of the internal space, and is transmitted from the rotating shafts of the plurality of vanes. The compressor according to claim 1, wherein the compressor is configured to receive a rotational force through a member.

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