Timing support variable-section nozzle ring

Abstract

The invention provides a timing supporting variable-section nozzle ring which comprises a timing supporting block, a mounting disc and a driving disc, the mounting disc and the driving disc are coaxially arranged, and the driving disc is arranged on the mounting disc in a sleeving mode. A timing groove is formed in the driving disc; one end of the timing supporting block is rotationally connected with the mounting disc, the other end of the timing supporting block is located in the timing groove, and the timing supporting block is used for providing radial support for the driving disc; at least parts of the two side ends of the timing supporting block are attached to the two side walls of the timing groove all the time. According to the nozzle ring, the timing supporting blocks are matched with the timing grooves, and the timing supporting blocks can be attached to the corresponding side walls of the timing grooves in the radial direction and the circumferential direction, so that multi-point supporting is provided for the driving disc, the radial positioning accuracy of the driving disc is guaranteed, the driving disc is stable during operation, and the control precision and the working efficiency of the nozzle ring are improved.

Description

Technical Field

[0001] The present application relates to the technical field of nozzle rings, and in particular to a timing-supported variable-section nozzle ring. Background Art

[0002] As international requirements for automobile emissions are upgraded, fuel vehicles need to use turbocharging technology to increase engine power and achieve energy conservation and emission reduction and meet emission standards; the hydrogen fuel cell air compressor of hydrogen fuel cell vehicles also needs to use turbocharging technology to reduce the parasitic power of the hydrogen fuel cell air compressor and achieve energy conservation and emission reduction.

[0003] The core component for realizing the application of turbocharging technology is the variable-section nozzle ring. Its current structural design has the disadvantages of inaccurate radial positioning of the drive disc, imprecise transmission, and large driving resistance.

[0004] Since the blades need to be driven by the shift fork to rotate, the driving force of the shift fork comes from the rotation of the drive disk; in the prior art, the drive disk rotates around the mounting disk, and the contact area between the inner hole of the drive disk and the shoulder of the mounting disk is large, and the movement resistance of the kinematic pair is large, which can easily lead to failures in the form of wear and jamming of the variable cross-section nozzle ring kinematic pair; especially when the nozzle ring is turned from the maximum opening back to the minimum opening or from the minimum opening to the maximum opening, the inner hole of the drive disk and the shoulder of the mounting disk are more likely to be tightly attached to each other over a large area under the combined action of the driving force and inertia, resulting in large friction and causing the movement to jam, and the jamming principle is similar to that of the bicycle wheel hub brake.

[0005] In order to reduce the risk of jamming, conventional design methods increase the radial clearance between the inner hole of the drive disk and the shoulder of the mounting disk during design to prevent the two from locking and jamming during relative movement. However, this also brings about the disadvantages of inaccurate radial positioning of the drive disk and imprecise transmission.

[0006] Therefore, there is room for further improvement in the variable cross-section nozzle ring in the prior art. Summary of the invention

[0007] In view of this, in order to solve the technical problem that the above-mentioned prior art reduces the jamming between the driving disk and the mounting disk by increasing the radial clearance between the inner hole of the driving disk and the shoulder of the mounting disk, which will lead to inaccurate radial positioning between the driving disk and the mounting disk and inaccurate transmission precision, the present application provides a timing support variable cross-section nozzle ring, on which a timing support structure is provided, and the mounting disk always provides supporting force of at least two supporting points to the driving disk through the timing support structure, so that the inner wall of the inner hole of the driving disk will not generate radial contact with the shoulder of the mounting disk, thereby avoiding movement jamming and ensuring stable operation of the driving disk relative to the mounting disk, thereby ensuring high radial positioning accuracy and high transmission precision.

[0008] The present application provides a timing support variable cross-section nozzle ring, comprising a coaxially arranged mounting plate and a driving plate, wherein the driving plate is sleeved on the mounting plate;

[0009] It also includes a timing support block, and the driving disc is provided with a timing slot;

[0010] One end of the timing support block is rotatably connected to the mounting plate, and the other end of the timing support block is located in the timing slot, and the timing support block is used to provide radial support for the driving plate;

[0011] Wherein, at least part of the two side ends of the timing support block are always in contact with the two side walls of the timing groove.

[0012] Compared with the prior art, the timing support variable-section nozzle ring of the present application has a timing support block, a timing slot is provided on the driving disk, one end of the timing support block is rotatably connected to the mounting disk, so that the timing support block can rotate, and the end of the timing support block close to the driving disk is located in the timing slot, and the timing support block can provide radial support to the driving disk, thereby ensuring that the radial gap between the inner hole of the driving disk and the mounting disk can be maintained, so that the side wall of the inner hole of the driving disk does not fit with the mounting disk, thereby reducing sticking; at the same time, the two side ends of the timing support block are at least partially in contact with the two side walls of the timing slot, even when the timing support block rotates, the timing support block is in a The two side walls in the timing groove always fit in correspondence with the side walls at both ends of the timing groove. Therefore, even when the driving disk rotates relative to the mounting disk, the timing support block can still support the driving disk. The timing support block fits in the timing groove in the circumferential direction, thereby providing circumferential support for the driving disk; with the radial support of the driving disk by the timing support block, even if the timing support block runs on a vertical plane, the center line will not be offset due to gravity and the small number of support points, thereby ensuring the stability of the driving disk during operation, providing the driving disk with higher radial positioning accuracy and higher transmission accuracy, and improving the working stability and work efficiency of the nozzle ring.

[0013] Preferably, the timing slot opens on the side wall of the driving plate facing the mounting plate, and the timing slot comprises a middle constraint wall and a side constraint wall, and the side constraint walls are arranged at both ends of the middle constraint arm;

[0014] The side end constraint wall faces the center line direction of the mounting plate, and an angle θ1 is formed between the side end constraint wall and the middle constraint wall, and 60°<θ1<100°.

[0015] Preferably, the timing support block comprises a limiting portion and a connecting portion, the limiting portion is connected to the connecting portion, and the connecting portion is rotatably connected to the mounting plate;

[0016] The limiting portion is located in the timing groove.

[0017] Preferably, the limiting portion comprises a middle support end and a side support end, the side support ends are arranged at both ends of the middle support end, and the outer side walls of the side support ends are smooth curved surfaces;

[0018] The middle constraint wall is used to limit the middle support end, and the side constraint wall is used to fit with the side support end.

[0019] Preferably, the middle restraining wall is an arc-shaped structure;

[0020] When the limiting part rotates in the timing groove, the middle support end and the middle constraint wall form at least one point fit, and each of the side support ends and the side end constraint wall form at least one point fit;

[0021] The limiting portion and the timing slot are fitted at least three points, and the three fitting points are not on the same straight line.

[0022] Preferably, the side end restraining wall comprises a first straight line segment and a second straight line segment;

[0023] One end of the first straight line segment is connected to the middle constraint wall, and the other end is connected to the second straight line segment;

[0024] There is an included angle θ2 between the first straight line segment and the second straight line segment, wherein 90°<θ2<180°, and θ1<θ2.

[0025] Preferably, the middle support end includes at least three plane segments, and an angle θ3 is formed between adjacent plane segments, 90°<θ3<180°, θ1<θ3;

[0026] Wherein, an arc segment is provided at the end of the plane segment;

[0027] The plane segments are respectively a first plane segment, a second plane segment and a third plane segment, and the first plane segment and the third plane segment are symmetrically arranged on both sides of the second plane segment;

[0028] When the first plane section is in contact with the middle constraint wall, the opening of the timing support variable cross-section nozzle ring is minimum;

[0029] When the second plane section is in contact with the middle restraining wall, the timing support variable cross-section nozzle ring has a medium opening;

[0030] When the third plane section is in contact with the middle constraint wall, the opening of the timing support variable cross-section nozzle ring is maximum.

[0031] Preferably, there are at least three timing support blocks, and the timing support blocks are arranged at intervals along the circumference of the mounting plate;

[0032] The mounting plate is provided with a shaft shoulder, and the driving plate is provided with an inner hole, and the diameter of the inner hole is larger than the outer diameter of the shaft shoulder.

[0033] Preferably, the mounting plate is provided with a connecting hole, the connecting portion is provided with a rotating hole, and the connecting hole and the rotating hole are coaxially arranged;

[0034] It also includes a connecting shaft, which passes through the rotating hole and the connecting hole in sequence to be used for rotatably connecting the timing support block and the mounting plate.

[0035] Preferably, a limit block is provided at the end of the connecting shaft, the outer diameter of the limit block is larger than the outer diameter of the rotating hole, and the limit block is used to axially limit the timing support block.

[0036] A timing support variable cross-section nozzle ring of the present application has at least the following technical effects:

[0037] 1. By arranging the timing support block and the timing groove, the timing support block can fit with the corresponding side wall of the timing groove in the radial and circumferential directions, thereby providing multi-point support for the drive disc, ensuring the radial positioning accuracy of the drive disc, making the drive disc run more smoothly, and improving the working efficiency of the nozzle ring;

[0038] 2. By setting the included angle between the middle constraint wall and the side constraint wall to be between 60° and 100°, and the side constraint wall is in contact with the side support end of the timing support block, and the middle constraint wall is in contact with the middle support end of the timing support block, the timing support block forms at least three-point support for the timing slot, and the three points roughly form a triangle, thereby strengthening the support stability of the timing support block for the timing slot and ensuring the accuracy of the transmission precision;

[0039] 3. By setting three plane sections on the middle support end, and setting the angle between adjacent plane sections to be an obtuse angle, the limit part has three sections of support with the middle constraint wall when rotating, corresponding to the three sizes of opening of the nozzle ring, and the plane section can ensure the stability of the fit with the middle constraint wall, so that the opening is stable;

[0040] 4. By setting the timing support block to the timing mode, the timing support block can be rotated to the specified position at the specified time, thereby ensuring that the nozzle ring has the best coordination and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a side view schematic diagram of a timing support variable cross-section nozzle ring provided by an embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of the cross-sectional structure of a timing support variable cross-section nozzle ring provided in one embodiment of the present application;

[0043] Figure 3 It is a schematic diagram of a partial cross-sectional structure of a timing support variable cross-section nozzle ring provided in an embodiment of the present application;

[0044] Figure 4 It is a schematic diagram of a local structure of a timing support variable cross-section nozzle ring provided by an embodiment of the present application when the opening degree is the smallest;

[0045] Figure 5 It is a schematic diagram of the partial structure of a timing support variable cross-section nozzle ring provided by an embodiment of the present application when the opening degree is moderate;

[0046] Figure 6 It is a schematic diagram of the local structure of a timing support variable cross-section nozzle ring provided by an embodiment of the present application when the opening degree is the largest;

[0047] Figure 7 yes Figure 1 A magnified schematic diagram of local A.

[0048] Reference numerals: 1. timing support variable cross-section nozzle ring;

[0049] 11. Mounting plate; 12. Driving plate; 13. Timing support block; 14. Connecting shaft; 15. Limit block; 16. Shift fork; 17. Distance sleeve; 18. Rear cover;

[0050] 111, connecting hole; 112, shaft shoulder; 113, blade rod; 114, blade; 115, travel limit pin; 116, radial positioning pin;

[0051] 121, timing slot; 122, active shift fork slot;

[0052] 1211, middle restraining wall; 1212, side restraining wall;

[0053] 1212.1, first straight line segment; 1212.2, second straight line segment;

[0054] 131, limiting portion; 132, connecting portion; 133, rotating hole;

[0055] 1311, middle support end; 1312, side support end;

[0056] 1311.1, first plane segment; 1311.2, second plane segment; 1311.3, third plane segment. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail, clearly and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0058] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0059] Those skilled in the art should understand that, in the disclosure of the present application, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0060] The present application is further described in detail below in conjunction with the accompanying drawings. Figures 1 to 7 illustrate.

[0061] The present application provides a timing support variable cross-section nozzle ring 1 (hereinafter referred to as nozzle ring 1), such as Figures 1 to 3 As shown, in the present application, the nozzle ring 1 includes a mounting disk 11, a driving disk 12, blades 114, a blade rod 113 and a shift fork 16, the driving disk 12 is rotatably connected to the mounting disk 11, the driving disk 12 and the mounting disk 11 are coaxially arranged, the mounting disk 11 is provided with a shaft shoulder 112, the driving disk 12 is provided with an inner hole, the driving disk 12 is correspondingly sleeved on the shaft shoulder 112 of the mounting disk 11, wherein the inner hole diameter of the driving disk 12 is larger than the outer diameter of the shaft shoulder 112, and in the radial direction, there is a gap between the driving disk 12 and the mounting disk 11, thereby reducing the jamming;

[0062] like Figure 1 to Figure 2 As shown, the blade rod 113 is arranged axially, the blade rod 113 penetrates the mounting disk 11, and the blade rod 113 is rotatably connected to the mounting disk 11; one end of the blade rod 113 exceeds the surface of the mounting disk 11 and is fixedly connected to the fork 16, and the other end is fixedly connected to the blade 114, and the end of the fork 16 away from the blade rod 113 is clamped with the driving disk 12, and the driving disk 12 is provided with a clamping groove, and the fork 16 is located in the clamping groove; Figure 1 As shown, the driving disc 12 is provided with an active fork groove 122, and the active fork groove 122 and the card groove are distributed on the driving disc 12 at intervals along the circumferential direction. The active fork groove 122 is used to install the active fork 16. The active fork 16 provides power to drive the driving disc 12 to rotate relative to the mounting disc 11, thereby driving the fork 16 to rotate, and the fork 16 drives the blade rod 113 to rotate, further causing the blade 114 to rotate a certain angle, and the size of the fluid channel between adjacent blades 114 is changed, thereby realizing the regulation of the flow rate and pressure of the exhaust gas (automobile exhaust) of the fuel engine or hydrogen fuel cell.

[0063] In particular, if Figures 1 to 7 As shown, in the present application, the nozzle ring 1 also includes a timing support structure, which acts between the driving disk 12 and the mounting disk 11, and is used to provide radial and circumferential support to the driving disk 12, so that the radial clearance between the inner hole of the driving disk 12 and the shoulder 112 of the mounting disk 11 can be maintained, thereby reducing the sticking of the nozzle ring 1; it can also provide circumferential support force to the driving disk 12, improve the support stability of the driving disk 12, avoid the center line of the driving disk 12 from being offset relative to the center line of the mounting disk 11, and ensure the accuracy of the radial positioning of the driving disk 12, thereby improving the accuracy of the transmission precision of the driving disk 12.

[0064] Specifically, the timing support structure is further described; Figures 3 to 7 As shown, the timing support structure includes a timing support block 13 and a timing slot 121. The timing slot 121 is arranged on the driving disk 12. The timing slot 121 opens on the side wall of the driving disk 12 facing the center line. One end of the timing support block 13 is rotatably connected to the mounting disk 11, so that the driving disk 12 can rotate relative to the mounting disk 11; the other end of the timing support block 13 extends toward the driving disk 12 and extends into the timing slot 121; wherein the timing support block 13 located in the timing slot 121 fits with the radial side wall of the timing slot 121, thereby providing a radial support for the driving disk 12. The timing support block 13 has radial and circumferential support forces, and the side walls at both ends of the timing support block 13 are at least partially always in correspondence with the two side walls of the timing groove 121, thereby providing circumferential support forces for the driving disk 12, that is, the timing support block 13 provides radial and circumferential support forces for the driving disk 12 at the same time, even if the timing support block 13 runs on a vertical plane, the center line will not be offset due to gravity and the small number of support points, thereby ensuring the stability of the driving disk 12 during operation, providing the driving disk 12 with higher radial positioning accuracy and higher transmission accuracy, and improving the working stability and working efficiency of the nozzle ring 1.

[0065] Further, such as Figure 7As shown, the timing slot 121 includes a middle constraint wall 1211 and a side constraint wall 1212, and the side constraint walls 1212 are arranged at both ends of the middle constraint wall 1211, so that the timing slot 121 is substantially a rectangular n-shaped structure, and the timing slot 121 is a symmetrical structure; at least three timing slots 121 are arranged, and the timing slots 121 are arranged at intervals along the circumference of the driving disk 12, wherein the number of timing support blocks 13 corresponds to the number of timing slots 121; in this embodiment, substantially the middle constraint wall 1211 and the side constraint wall 1212 have an included angle θ1, 60°<θ1<100°, that is, the middle constraint wall 1211 and the side constraint wall 1212 are substantially at ... The angle opening between 12 is moderate, and the middle constraint wall 1211 is opposite to the center line of the mounting disk 11, so that the side constraint wall 1212 is roughly parallel to the radial direction. When the two side ends of the timing support block 13 are respectively fitted with the two side constraint walls 1212, the timing support block 13 abuts against the side constraint walls 1212, and the timing support block 13 generates a non-radial force on the driving disk 12, and the force is roughly along the circumferential direction or has a certain angle with the radial direction, so that the timing support block 13 provides a circumferential force on the driving disk 12, stabilizes the driving disk 12, and prevents the driving disk 12 from arbitrarily deviating from the center line, thereby ensuring the transmission accuracy.

[0066] Furthermore, the angle of θ1 is preferably one of 86°, 88°, and 90°. In this embodiment, θ1 is 90°.

[0067] like Figure 7 As shown, the timing support block 13 is further described; the timing support block 13 includes a limiting portion 131 and a connecting portion 132, the connecting portion 132 is a cylindrical structure as a whole, the limiting portion 131 is a fan-shaped structure as a whole, the connecting portion 132 is rotatably connected to the mounting plate 11, the limiting portion 131 is located in the timing slot 121, and the end of the limiting portion 131 away from the driving plate 12 is connected to the connecting portion 132; wherein, as Figure 3 As shown, a connecting hole 111 is provided on the mounting disk 11, and a rotating hole 133 is provided on the connecting portion 132. The connecting hole 111 and the rotating hole 133 are coaxially arranged. The nozzle ring 1 also includes a connecting shaft 14, which passes through the rotating hole 133 and the connecting hole 111 in sequence. The connecting shaft 14 and the mounting disk 11 are interference fit to ensure the connection firmness of the connecting shaft 14 and the mounting disk 11; the connecting shaft 14 is used to rotatably connect the timing support block 13 with the mounting disk 11, and the aperture of the rotating hole 133 is slightly larger than the outer diameter of the connecting shaft 14 to ensure that the timing support block 13 can rotate around the connecting shaft 14; wherein, a limit block 15 is provided at the end of the connecting shaft 14 exposed to the outer surface of the connecting portion 132, and the outer diameter of the limit block 15 is larger than the outer diameter of the rotating hole 133, and the limit block 15 is used to axially limit the timing support block 13 to ensure that the timing support block 13 will not fall off the connecting shaft 14.

[0068] like Figure 3As shown, the timing support block 13 limits the driving disk 12 in the axial direction, and the axial thickness of the driving disk 12 corresponding to the timing slot 121 is smaller than the axial width of the shoulder 112 of the mounting disk 11, so that the axial displacement of the driving disk 12 is limited to a certain range. The driving disk 12 can move slightly in the axial direction, but due to the limitation of the mounting disk 11 and the timing support block 13, the driving disk 12 will not fall off in the axial direction, thereby further ensuring the installation stability of the driving disk 12.

[0069] like Figure 7 As shown, the width of the limiting portion 131 near the connecting portion 132 is smaller than the opening width of the timing slot 121, and its two sides are inwardly retracted arc structures to prevent the timing support block 13 from abutting against the opening end surface of the timing slot 121 when rotating; the limiting portion 131 located in the timing slot 121 includes a middle supporting end 1311 and a side supporting end 1312, the middle supporting end 1311 is opposite to the middle constraint wall 1211 of the timing slot 121, and the middle constraint wall 1211 is used to limit the middle supporting end 1311. When the middle supporting end 1311 is in contact with the middle constraint wall 1211, as shown in FIG. Figures 4 to 6 As shown, the middle support end 1311 provides a normal (radial) force F1 through the center of the rotating hole 133 to the driving disk 12 through the middle constraint wall 1211;

[0070] The side support ends 1312 are arranged at both ends of the middle support end 1311, and the outer side walls of the side support ends 1312 have an inward tendency, and the outer side walls of the side support ends 1312 are smooth arc surfaces. The side support ends 1312 are opposite to the side end constraint walls 1212, and at least a part of the side support ends 1312 is always in contact with the side support ends 1312, and the side support ends 1312 form a supporting force F2 on the side end constraint walls 1212. As the timing support block 13 rotates, the direction of F2 changes, but it can be known that F2 is not parallel to F1, and there is an angle between the two, which is related to the rotation angle of the timing support block 13 relative to the timing slot 121, but the angle is less than 180°, from When the limiting portion 131 rotates in the timing slot 121, the middle support end 1311 and the middle constraint wall 1211 form at least one point fit, and each side support end 1312 and the side constraint wall 1212 form at least one point fit, that is, the limiting portion 131 and the timing slot 121 form at least three points fit, and the three fit points are not on the same straight line, thereby forming a triangular stable support structure, strengthening the stability and anti-interference of the timing support block 13 for the driving disk 12, so that the center line of the driving disk 12 is not easily offset from the center line of the mounting disk 11, thereby ensuring the accuracy of the operating position of the driving disk 12, and further ensuring the accuracy of the opening of the blade 114 of the nozzle ring 1.

[0071] Among them Figure 7As shown, an arc section is provided at the end of the plane segment, so that the connection at the end of the plane segment has an inward tendency, and the connection part 132 between two adjacent plane segments has no sharp corners and is relatively smooth and round, which reduces the wear with the middle constraint wall 1211 and ensures the smoothness of switching between the plane segments and the fit with the middle constraint wall 1211.

[0072] Further, such as Figure 7 As shown, the middle constraint wall 1211 is an arc-shaped structure, and its contour line is basically parallel to the outer contour line of the driving disk 12; a plane section is provided on the middle support end 1311, and when the plane section is in contact with the middle constraint wall 1211, at least one point contact is generated, usually two point contacts, so that when the middle support end 1311 is in contact with the middle constraint wall 1211, there is two-point support, and the support is relatively stable.

[0073] like Figure 7 As shown, the middle support end 1311 includes at least three plane segments, and there is an angle θ3 between adjacent plane segments, 90°<θ3<180°, θ1<θ3, that is, there is an angle between each plane segment, so that the end surface of the middle support portion facing the middle constraint wall 1211 generally forms an arch structure; the plane segments are respectively a first plane segment 1311.1, a second plane segment 1311.2 and a third plane segment 1311.3 which are arranged in sequence, and the first plane segment 1311.1 and the third plane segment 1311.3 are symmetrically arranged on both sides of the second plane segment 1311.2, wherein each plane segment corresponds to a different opening of the blade 114 on the nozzle ring 1 when it is in contact with the middle constraint wall 1211; specifically, as Figure 4 As shown, when the first plane section 1311.1 is in contact with the middle restraining wall 1211, the opening of the timing support variable cross-section nozzle ring 1 is the smallest; Figure 5 As shown, when the second plane section 1311.2 is in contact with the middle restraining wall 1211, the timing support variable cross-section nozzle ring 1 has a medium opening; Figure 6 As shown, when the third plane section 1311.3 is in contact with the middle restraining wall 1211, the opening of the timing-supported variable-section nozzle ring 1 is maximum.

[0074] Furthermore, θ3 is preferably one of 150°, 152°, 154°, 156°, 158°, 160°, and 162°; among which, in this embodiment, θ3 is preferably 158°.

[0075] like Figure 7As shown, the side end constraint wall 1212 includes a first straight segment 1212.1 and a second straight segment 1212.2, one end of the first straight segment 1212.1 is connected to the middle constraint wall 1211, and the other end of the first straight segment 1212.1 is connected to the second straight segment 1212.2; wherein, there is an angle θ2 between the first straight segment 1212.1 and the second straight segment 1212.2, wherein 90°<θ2<180°, θ1<θ2, so that the side wall constraint wall forms a gathered shape, and the second straight segment 1212.2 has an angle θ2 facing the middle constraint wall 1211. With a tendency toward the inside of the timing slot 121, when the limiting portion 131 is inclined, that is, when the opening of the blade 114 is at the minimum or maximum, one of the two side support ends 1312 is in contact with the first straight line segment 1212.1, and the other is in contact with the second straight line segment 1212.2, and the second straight line segment 1212.2 can play a certain limiting role on the side support end 1312, thereby preventing the side support end 1312 from easily sliding out of the second straight line segment 1212.2, and further ensuring the stable supporting effect of the timing support block 13 on the drive disk 12.

[0076] Specifically, Figure 4 As shown, when the blade 114 is at its smallest opening, the limiting portion 131 tilts to the right, the side support end 1312 on the left is in contact with the first straight line segment 1212.1 on the left, and the first plane segment 1311.1 is in contact with the middle constraint wall 1211; the side support end 1312 on the right is in contact with the second straight line segment 1212.2 on the right;

[0077] like Figure 5 As shown, when the opening of the blade 114 is at the middle value, the limiting portion 131 is in the middle position, the second plane segment 1311.2 is in contact with the middle constraint wall 1211; the left side support end 1312 is in contact with the left second straight line segment 1212.2, and the right side support end 1312 is in contact with the right second straight line segment 1212.2;

[0078] like Figure 6 As shown, when the blade 114 is at its maximum opening, the limiting portion 131 tilts to the left, and the third plane segment 1311.3 fits with the middle constraint wall 1211; the left side support end 1312 fits with the left second straight line segment 1212.2, and the right side support end 1312 fits with the right first straight line segment 1212.1;

[0079] It should be noted that, in this embodiment, taking the line between the center of the connecting shaft 14 and the center of the mounting disk 11 as the reference line, the angle θ4 between the first straight line segment 1212.1 and the reference line is less than 5°, and the angle θ5 between the second straight line segment 1212.2 and the reference line is less than 20°; preferably, θ4 is 3°, θ5 is 15°, and θ2 is preferably 168°.

[0080] It should be further explained that, in the present application, the timing support block 13 is provided with three timing positions, which precisely fit with the timing slot 121 of the dial at the minimum opening gear, the medium opening gear and the maximum opening gear. Therefore, the nozzle ring 1 has precise opening adjustment of three gears, namely the minimum opening gear, the medium opening gear and the maximum opening gear; the minimum opening gear and the medium opening gear can be adjusted steplessly; the medium opening gear and the maximum opening gear can also be adjusted steplessly; thereby ensuring that the nozzle ring 1 has the best coordination and performance, so that the working efficiency of the nozzle ring 1 can be maintained.

[0081] In this embodiment, the fork 16, the blades 114, and the blade rods 113 are all arranged in multiple groups, wherein the number of the forks 16, the blades 114, and the blade rods 113 are the same, and the multiple groups of blade rods 113 are arranged at equal intervals along the circumference of the mounting plate 11; in actual application, the blade rods 113 can also be arranged at unequal intervals according to the working conditions.

[0082] In this embodiment, radial positioning pins 116 are provided for radial positioning and installation of the mounting plate 11 on the air compressor; travel limit pins 115 are provided for limiting the rotation angle of the drive plate 12, thereby limiting the size of the opening of the nozzle ring 1, which meets the needs of the hydrogen fuel cell air compressor of a hydrogen energy vehicle or the fuel engine turbocharger of a fuel vehicle; a distance sleeve 17 and a rear cover plate 18 are provided, which together with the mounting plate 11 and the blades 114 form a fluid channel for the exhaust gas of the air compressor. In practical applications, the distance sleeve 17 and the rear cover plate 18 can also be omitted, and the corresponding parts of the air compressor or turbocharger, the mounting plate 11 and the blades 114 directly form the exhaust gas channel of the automobile.

[0083] It should be noted that the various embodiments of the present application can be arbitrarily combined into a new embodiment if the solutions do not conflict and the technical solutions can coexist.

[0084] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A timing support variable cross-section nozzle ring, characterized in that: It comprises a coaxially arranged mounting disk (11) and a driving disk (12), wherein the driving disk (12) is sleeved on the mounting disk (11); It also includes a timing support block (13), and a timing groove (121) is provided on the driving disc (12); One end of the timing support block (13) is rotatably connected to the mounting plate (11), and the other end of the timing support block (13) is located in the timing slot (121). The timing support block (13) is used to provide radial support for the driving plate (12); Wherein, at least part of the two side ends of the timing support block (13) are always in contact with the two side walls of the timing groove (121).

2. The timing support variable area nozzle ring according to claim 1, characterized in that: The timing slot (121) opens on the side wall of the driving disk (12) facing the mounting disk (11), and the timing slot (121) comprises a middle constraint wall (1211) and side constraint walls (1212), and the side constraint walls (1212) are arranged at both ends of the middle constraint arm; The side end restraining wall (1212) faces the center line direction of the mounting plate (11), and an angle θ1 is formed between the side end restraining wall (1212) and the middle restraining wall (1211), and 60°<θ1<100°.

3. The timing support variable area nozzle ring according to claim 2, characterized in that: The timing support block (13) comprises a limiting portion (131) and a connecting portion (132), the limiting portion (131) is connected to the connecting portion (132), and the connecting portion (132) is rotatably connected to the mounting plate (11); The limiting portion (131) is located in the timing groove (121).

4. The timing support variable area nozzle ring according to claim 3, characterized in that: The limiting portion (131) comprises a middle supporting end (1311) and a side supporting end (1312), wherein the side supporting ends (1312) are arranged at both ends of the middle supporting end (1311), and the outer side walls of the side supporting ends (1312) are smooth curved surfaces; The middle restraining wall (1211) is used to limit the middle supporting end (1311), and the side restraining wall (1212) is used to fit with the side supporting end (1312).

5. The timing support variable area nozzle ring according to claim 4, characterized in that: The middle restraining wall (1211) is an arc-shaped structure; When the limiting portion (131) rotates in the timing slot (121), the middle support end (1311) and the middle constraint wall (1211) form at least one point fit, and each of the side support ends (1312) and the side constraint wall (1212) form at least one point fit; The limiting portion (131) and the timing slot (121) are fitted at least three points, and the three fitting points are not on the same straight line.

6. The timing support variable area nozzle ring according to claim 2, characterized in that: The side end restraining wall (1212) comprises a first straight line segment (1212.1) and a second straight line segment (1212.2); One end of the first straight line segment (1212.1) is connected to the middle constraining wall (1211), and the other end is connected to the second straight line segment (1212.2); There is an included angle θ2 between the first straight line segment (1212.1) and the second straight line segment (1212.2), wherein 90°<θ2<180°, and θ1<θ2.

7. The timing support variable area nozzle ring according to claim 4, characterized in that: The middle support end (1311) comprises at least three plane segments, and an angle θ3 is formed between adjacent plane segments, 90°<θ3<180°, θ1<θ3; Wherein, an arc segment is provided at the end of the plane segment; The plane segments are respectively a first plane segment (1311.1), a second plane segment (1311.2) and a third plane segment (1311.3); the first plane segment (1311.1) and the third plane segment (1311.3) are symmetrically arranged on both sides of the second plane segment (1311.2); When the first plane section (1311.1) is in contact with the middle restraining wall (1211), the opening of the timing support variable cross-section nozzle ring (1) is minimal; When the second plane section (1311.2) is in contact with the middle restraining wall (1211), the opening of the timing support variable cross-section nozzle ring (1) is medium; When the third plane section (1311.3) is in contact with the middle restraining wall (1211), the opening of the timing support variable cross-section nozzle ring (1) is maximum.

8. The timing support variable area nozzle ring according to claim 1, characterized in that: There are at least three timing support blocks (13), and the timing support blocks (13) are arranged at intervals along the circumference of the mounting plate (11); The mounting plate (11) is provided with a shaft shoulder (112), and the driving plate (12) is provided with an inner hole, wherein the diameter of the inner hole is larger than the outer diameter of the shaft shoulder (112).

9. The timing support variable area nozzle ring according to claim 1, characterized in that: The mounting plate (11) is provided with a connecting hole (111), the connecting portion (132) is provided with a rotating hole (133), and the connecting hole (111) and the rotating hole (133) are coaxially arranged; It also includes a connecting shaft (14), which passes through the rotating hole (133) and the connecting hole (111) in sequence, so as to rotatably connect the timing support block (13) and the mounting plate (11).

10. The timing support variable area nozzle ring according to claim 9, characterized in that: A limit block (15) is provided at the end of the connecting shaft (14); the outer diameter of the limit block (15) is greater than the outer diameter of the rotating hole (133); and the limit block (15) is used to axially limit the timing support block (13).

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