Discs for rotating machinery, and rotating machinery

Abstract

To provide a disc for a rotary machine having a structure which is inexpensive, simple, and lighter, and to provide a rotary machine.SOLUTION: A disc for a rotary machine includes: an inner diameter side member which forms an annular shape centered on an axis, forms a portion at the radial inner side relative to the axis, and is formed of a first material having a relatively high density and a high rigidity; and an outer diameter side member which is coupled to the radial outer side of the inner diameter side member and formed of a second material having a relatively low density and a high rigidity.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a disk for a rotary machine and a rotary machine.

Background Art

[0002] A turbofan engine, which is a type of rotary machine, includes a turbofan, a compressor, a combustor, and a turbine. Among these, the fan blades of the turbofan, the moving blades of the compressor, and the moving blades of the turbine are coupled to a shaft extending along the axis, and rotate around the axis together with the shaft. The turbofan is coupled to the shaft via a member called a disk. The disk has an annular shape centered on the axis.

[0003] As a technique for coupling a fan blade to a disk, for example, the one described in Patent Document 1 below is known. In this technique, a plurality of protrusions that mesh with each other are formed on the base end of the first member corresponding to the fan blade and the outer peripheral surface of the second member corresponding to the disk by three-dimensional laminated modeling. Thereby, it is said that the first member is coupled to the second member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when mechanically coupling members by a complex structure formed using three-dimensional laminated modeling as described above, there is a risk that weight reduction may be hindered by the members required for the coupling location.

[0006] This disclosure was made to solve the above problems and aims to provide a disk for rotating machinery and a rotating machine having a lighter structure. [Means for solving the problem]

[0007] To solve the above problems, the disc for a rotating machine according to this disclosure comprises an inner diameter side member formed of a first material with high density and high rigidity, which has an annular shape centered on an axis and forms a portion radially inward relative to the axis; and an outer diameter side member formed of a second material with low density and high rigidity, which is coupled to the radially outward side of the inner diameter side member. A connecting portion that connects the inner diameter side member and the outer diameter side member, Equipped with The first material is a metallic material, and the second material is a composite material having a fibrous material and a base material impregnated with the fibrous material, and the joint has a plurality of beams extending at least radially and circumferentially, an intermediate lattice structure integrally bonded to the inner diameter side member, and a bonding base material formed from the base material of the composite material forming the outer diameter side member, which fills the gaps in the intermediate lattice structure. ru.

[0009] The rotating machine according to this disclosure comprises the above-mentioned rotating machine disk, a plurality of blades extending radially outward from the disk and arranged circumferentially, and a casing covering the blades from the outer circumference. [Effects of the Invention]

[0010] According to this disclosure, it is possible to provide a disk for a rotating machine and a rotating machine having a lighter structure. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic cross-sectional view showing the configuration of a turbofan engine as a rotating machine according to the first embodiment of this disclosure. [Figure 2] This is a cross-sectional view showing the configuration of a fan blade and disk according to the first embodiment of this disclosure. [Figure 3] This is a cross-sectional view of a disk according to the first embodiment of the present disclosure, and is a cross-sectional view taken along the line III-III in Figure 2. [Figure 4] This is a cross-sectional view of a disk according to a second embodiment of this disclosure. [Figure 5] This is a cross-sectional view of a disk according to a third embodiment of this disclosure. [Figure 6]This is a cross-sectional view of the disk according to the third embodiment of this disclosure, viewed from the axial direction. [Figure 7] This is an axial cross-sectional view showing a first modified example of the disk according to the third embodiment of this disclosure. [Figure 8] This is an axial cross-sectional view showing a second modified example of the disk according to the third embodiment of this disclosure. [Modes for carrying out the invention]

[0012] <First Embodiment> Hereinafter, the configuration of the turbofan engine 1 as a rotating machine and the disk 41 as a disk for a rotating machine according to the first embodiment of this disclosure will be described with reference to Figures 1 to 3.

[0013] (Configuration of a turbofan engine) The turbofan engine 1 is mounted on an aircraft, for example, to function as a thruster. As shown in Figure 1, the turbofan engine 1 comprises a compressor 10, a combustor 20, a turbine 30, a turbofan 40, and a duct 50.

[0014] The compressor 10 compresses external air to produce high-pressure compressed air. The compressor 10 includes a compressor rotor 11, compressor blades 12, a compressor casing 13, and compressor stationary blades 14. The compressor rotor 11 is columnar in shape and extends along the axis O. The compressor rotor 11 is supported by a bearing device (not shown) so that it can rotate around the axis O. Multiple compressor blades 12 are provided on the outer circumferential surface of the compressor rotor 11, extending radially outward and arranged at intervals in the circumferential direction. Multiple rows of compressor blades 12 are provided at intervals in the direction of the axis O.

[0015] The compressor casing 13 is cylindrical and covers the compressor rotor 11 and the compressor impeller 12 from the outer peripheral side. On the inner peripheral surface of the compressor casing 13, a plurality of compressor stator blades 14 are provided which extend radially inward and are arranged at intervals in the circumferential direction. A plurality of rows of compressor stator blades 14 are provided at intervals in the direction of the axis O. Also, the rows of compressor stator blades 14 and the rows of compressor impellers 12 are arranged alternately in the direction of the axis O. The compressor casing 13 is provided with an air inlet 15 for taking in air flowing from one side in the direction of the axis O. In the following description, the direction in which air flows away from this air inlet 15 is called the downstream side, and the opposite side is called the upstream side.

[0016] The combustor 20 is provided downstream of the compressor casing 13. The combustor 20 generates high-temperature and high-pressure combustion gas by mixing fuel with the compressed air generated by the compressor 10 and burning it. The combustor 20 is provided between the compressor casing 13 and the turbine casing 33 (described later). Although not shown in detail, annular, can-type, or cannular combustors are preferably used as the combustor 20.

[0017] The turbine 30 is rotationally driven by the combustion gas generated by the combustor 20 to pump air toward the downstream side and generate at least part of the thrust. The turbine 30 includes a turbine rotor 31, a turbine impeller 32, a turbine casing 33, and a turbine stator blade 34. The turbine rotor 31 is columnar and extends along the axis O. That is, the turbine rotor 3? is arranged coaxially with the above-described compressor rotor 11. On the outer peripheral surface of the turbine rotor 31, a plurality of turbine impellers 32 are provided which extend radially outward and are arranged at intervals in the circumferential direction. A plurality of rows of turbine impellers 32 are provided at intervals in the direction of the axis O.

[0018] The turbine casing 33 is cylindrical and covers the turbine rotor 31 and the turbine moving blades 32 from the outer peripheral side. A plurality of turbine stationary blades 34 are provided on the inner peripheral surface of the turbine casing 33, extending radially inward and arranged at intervals in the circumferential direction. A plurality of rows of turbine stationary blades 34 are provided at intervals in the direction of the axis O. Also, the rows of turbine stationary blades 34 and the rows of turbine moving blades 32 are arranged alternately in the direction of the axis O. On the downstream side of the turbine casing 33, an exhaust port 35 is formed for discharging the exhaust gas pumped by the turbine 30 toward the downstream side.

[0019] The compressor rotor 11 and the turbine rotor 31 are coaxially connected on the axis O to form a rotor 61. The compressor casing 13 and the turbine casing 33 are integrally connected around the axis O to form a casing 62. That is, the rotor 61 is rotatable around the axis O inside the casing 62.

[0020] The turbofan 40 is attached to the upstream end of the rotor 61. The turbofan 40 is provided to supply air to the region inside the above-described casing 62 and the region outside the casing 62 (the bypass flow path F partitioned by a duct 50 described later). The turbofan 40 has a disk 41 fixed to the tip of the rotor 61 and a plurality of fan blades 42 extending radially outward from the outer peripheral surface of the disk 41 and arranged at intervals in the circumferential direction.

[0021] The disk 41 is annular in shape with axis O as its center. As shown in Figure 2, the disk 41 has a cylindrical disk body 43 with axis O as its center, and a plurality of ribs 44 that protrude radially inward from the disk body 43 and are arranged at intervals in the direction of axis O. One of these ribs 44 is fixed to the rotor 61, so that the disk 41 rotates together with the rotor 61 around axis O. The fan blades 42 are attached to the outer circumferential surface of the disk body 43. The fan blades 42 are made of composite material such as CFRP or GFRP. The outer diameter of the fan blades 42 is set to be larger than the outer diameter of the casing 62.

[0022] The duct 50 covers the fan blades 42 and the casing 62 from the outer circumferential side. The duct 50 is cylindrical with axis O as its center. Of the spaces formed inside the duct 50, the space formed between the inner surface of the duct 50 and the outer surface of the casing 62 is designated as a bypass flow path F.

[0023] To drive the turbofan engine 1, the rotor 61 is rotated around axis O by an electric motor or the like. The compressor 10 then generates compressed air, which is sent to the combustor 20. The combustor 20 mixes fuel with the compressed air and burns it, generating high-temperature, high-pressure combustion gas. When the combustion gas comes into contact with the turbine blades 32, a rotational force around axis O is imparted to the rotor 61 via the turbine blades 32. This rotational force is also transmitted to the compressor 10 through the rotor 61, becoming the driving force for the compressor 10. Furthermore, the turbofan 40 rotates in conjunction with the rotor 61, supplying external air to the bypass passage F and the compressor 10. This cycle occurs continuously, operating the turbofan engine 1.

[0024] (Disk configuration) Next, the detailed configuration of the disk 41 will be described with reference to Figure 3. The disk 41 has an inner diameter member 71, an outer diameter member 72, and a joint 73. The inner diameter member 71 forms the radially inner portion of the annular disk 41. Specifically, the inner diameter member 71 occupies 10% to 70% of the radial dimension of the disk 41. More preferably, the inner diameter member 71 occupies 10% to 50% of the radial dimension of the disk 41. The inner diameter member 71 is formed of a first material 81. Specifically, a solid metal material such as an aluminum alloy is used as the first material 81. In other words, the first material 81 has high density and high rigidity.

[0025] The outer diameter member 72 is connected to the outer circumference of the inner diameter member 71 via a joint 73. The outer diameter member 72 forms the radially outer portion of the disk 41. The outer diameter member 72 accounts for 30% to 90% of the radial dimension of the disk 41. More preferably, the outer diameter member 72 accounts for 50% to 90% of the radial dimension of the disk 41. The outer diameter member 72 is formed from a second material 82. The second material 82 is a composite material. More specifically, carbon fiber reinforced plastics (CFRP), glass fiber reinforced plastics (GFRP), and ceramic matrix composites (CMC) are preferably used as the second material 82. In other words, the second material 82 is a composite material in which carbon fibers or glass fibers are impregnated and cured with a base resin. It is also possible to use other composite materials as the second material 82. The second material 82 has a lower density than the first material 81, but its rigidity is about the same as that of the first material 81.

[0026] The joint 73 connects the inner diameter member 71 and the outer diameter member 72. Specifically, the joint 73 can be a joint formed by welding, a joint formed by friction lap bonding, or a joint formed by nanomolding bonding.

[0027] (Effects and Benefits) In the turbofan engine 1 used as an aircraft engine, there is a need to reduce the weight and increase the strength of each component in order to achieve both improved range and fuel consumption and improved reliability. However, in annular components that are rotated, such as the disk 41 mentioned above, the circumferential stress tends to be greater towards the inner circumference and smaller towards the outer circumference.

[0028] According to the above configuration, the radially inner portion, where greater circumferential stress is generated when rotational force is applied, is formed of a first material 81 that is high-density, high-rigidity, and highly reliable in terms of strength. This allows it to adequately resist the circumferential stress. On the other hand, the radially outer portion, where the circumferential stress is relatively small, is formed of a second material 82 that is low-density and high-rigidity. This creates a density gradient in the radial direction, making it possible to provide sufficient strength according to the radial position. Therefore, compared to, for example, the disk 41 being formed integrally from a single material, it is possible to reduce the portion that is unnecessarily strong and excessively heavy. As a result, it is possible to achieve sufficient weight reduction while maintaining the necessary strength of the disk 41 as a whole. Furthermore, since the above-mentioned rigidity and weight reduction can be achieved without increasing the number of parts, the possibility of weight increase and increased risk of failure due to the use of additional parts can also be reduced.

[0029] Furthermore, with the above configuration, the required strength can be easily secured by using a metal material such as an aluminum alloy as the first material 81 on the radially inner side, while the density can be easily reduced, i.e., the weight can be easily reduced, by using a composite material as the second material 82 on the radially outer side. This reduces the centrifugal force caused by the outer diameter side member 72, and thus reduces the load superimposed on the inner diameter side member 71. Therefore, the reliability of the disk 41 can be further enhanced. In addition, since the composite material has high strength and rigidity as well as excellent vibration characteristics, it is possible to reduce vibration of the disk 41 as a whole. Moreover, by changing the orientation of the fiber material, anisotropy can be introduced into the composite material, so that the weight can be reduced to the maximum extent while securing the necessary stress margin. In other words, it is possible to precisely control the density gradient even inside the outer diameter side member 72. This optimizes the strength design and enables further weight reduction.

[0030] The first embodiment of this disclosure has been described above. Various changes and modifications can be made to the above configuration without departing from the gist of this disclosure.

[0031] <Second Embodiment> Next, a second embodiment of the present disclosure will be described with reference to Figure 4. Note that components similar to those in the first embodiment are denoted by the same reference numerals, and detailed descriptions are omitted. As shown in Figure 4, the disk 41 according to this embodiment further includes, in addition to the inner diameter side member 71 and outer diameter side member 72 described in the first embodiment, an inner diameter side lattice structure 74 and a connecting portion 75.

[0032] The inner diameter lattice structure 74 is provided further radially inward from the inner diameter member 71. The inner diameter lattice structure 74 has a plurality of beams extending at least in the circumferential and radial directions. The ends of these beams are connected to each other to form a lattice structure. Because the inner diameter lattice structure 74 has a low density, it is lighter than the solid metal material that forms the inner diameter member 71. Furthermore, the inner diameter lattice structure 74 has lower rigidity than the inner diameter member 71. Moreover, it is desirable that this inner diameter lattice structure 74 be formed integrally with the inner diameter member 71 by three-dimensional additive manufacturing.

[0033] The connecting portion 75 is provided to connect the inner diameter side member 71 and the outer diameter side member 72 in the radial direction. The connecting portion 75 has an intermediate lattice structure 91 and a connecting base material 92. The intermediate lattice structure 91 has the same configuration as the inner diameter side lattice structure 74 described above. The intermediate lattice structure 91 is integrally formed on the outer circumferential surface of the inner diameter side member 71. Three-dimensional additive manufacturing is preferably used to form the intermediate lattice structure 91. The connecting base material 92 is a member consisting only of the base material that is impregnated with fibers from the composite material that forms the outer diameter side member 72. In other words, the intermediate lattice structure 91 and the connecting base material 92 are connected by impregnating the base material into the gaps formed between the beams of the intermediate lattice structure 91.

[0034] (Effects and Benefits) According to the above configuration, by having a low-density and low-rigidity inner diameter lattice structure 74, when a rotational force is applied, the inner diameter lattice structure 74 preferentially deforms. As a result, the circumferential stress borne by the inner diameter lattice structure 74 is reduced. This makes the distribution of circumferential stress in the radial direction more uniform. As a result, compared to, for example, a case where the disk 41 is integrally formed from a single material, it is possible to reduce the portion that was unnecessarily strong, rigid, and excessively heavy. This makes it possible to reduce the overall weight of the disk 41.

[0035] Furthermore, according to the above configuration, the inner diameter member 71 and the outer diameter member 72 are joined by a joint 75. The joint 75 is composed of an intermediate lattice structure 91 integrally formed with the inner diameter member 71 and a base material portion of the composite material impregnated into this intermediate lattice structure 91. This makes it possible to join the inner diameter member 71 and the outer diameter member 72 more firmly than when other mechanical joining methods are used. In addition, the high reliability of the joint allows for a reduction in the frequency of inspections. This also makes it possible to reduce maintenance costs.

[0036] The second embodiment of this disclosure has been described above. It is possible to make various changes and modifications to the above configuration without departing from the gist of this disclosure.

[0037] <Third Embodiment> Next, a third embodiment of this disclosure will be described with reference to Figures 5 and 6. Components similar to those in the above embodiments are denoted by the same reference numerals, and detailed descriptions are omitted. As shown in Figure 5 or 6, in the disk 41 according to this embodiment, the materials forming the inner diameter member 71 and the outer diameter member 72 are different from those in the above embodiments.

[0038] The inner diameter side member 71 is formed from a third material 83. The third material 83 is a lattice structure 76. The lattice structure 76 has the same configuration as the inner diameter side lattice structure 74 described above. That is, the lattice structure 76 has multiple beams that extend at least in the circumferential and radial directions. The outer diameter side member 72 is formed from a fourth material 84. The fourth material 84 is specifically a solid metal material such as an aluminum alloy. Therefore, the third material 83 has a relatively lower density and lower rigidity compared to the fourth material 84. Conversely, the fourth material 84 has a relatively higher density and higher rigidity compared to the third material 83. These inner diameter side member 71 and outer diameter side member 72 are integrally formed from the same material. That is, the third material 83 and the fourth material 84 are formed from the same material (the aluminum alloy described above). It is desirable to use three-dimensional additive manufacturing when creating the inner diameter side member 71 and the outer diameter side member 72. Furthermore, it is also possible to form the inner diameter member 71 and the outer diameter member 72 from different materials.

[0039] (Effects and Benefits) According to the above configuration, by having an inner diameter side member 71 made of a third material 83 that is low in density and low in rigidity, when a rotational force is applied, the inner diameter side member 71 preferentially tries to deform. As a result, the circumferential stress borne by the inner diameter side member 71 is reduced. This makes the distribution of circumferential stress in the radial direction more uniform. As a result, compared to, for example, a disk 41 formed integrally from a single material, it is possible to reduce the portion that was unnecessarily high in strength and rigidity and therefore excessively heavy. This makes it possible to reduce the overall weight of the disk 41.

[0040] Furthermore, with the above configuration, by using a lattice structure 76 as the third material 83, numerous voids are formed by multiple beams, making it easy to achieve lower density and lower rigidity of the inner diameter side member 71. This makes it possible to reduce the weight of the inner diameter side member 71. Also, by using a solid metal material as the fourth material 84, it is easy to achieve higher density and higher rigidity of the outer diameter side member 72 compared to the inner diameter side member 71.

[0041] The third embodiment has been described in this disclosure. It is possible to make various changes and modifications to the above configuration without departing from the gist of this disclosure.

[0042] For example, as shown in Figure 7 as a first modified example, it is possible to change the direction in which the beams of the lattice structure 76 extend. In the example shown in the figure, one beam extends radially and has a curved shape that is convex in the circumferential direction at its radial center. The lattice structure 76 is formed by arranging such beams to be continuous in the circumferential direction and connected to one another. The same effects as described above can be obtained with this configuration as well.

[0043] Furthermore, as shown in Figure 8 as a second modified example, it is also possible to change the thickness (diameter) of some of the beams in the lattice structure 76. In the example shown in the figure, the thickness of the beams extending in the radial direction (radial beam 101) is greater than the thickness of the beams extending in the circumferential direction (circumferential beam 102). In this way, by varying the thickness of the beams according to direction, it is possible to introduce anisotropy into the structural strength of the lattice structure 76. In other words, it is possible to arbitrarily change and optimize the stress distribution of the lattice structure 76. This allows for further optimization of the strength design of the disk 41.

[0044] <Note> The rotating machine disk 41 and the rotating machine described in each embodiment can be understood, for example, as follows.

[0045] (1) The disc 41 for a rotating machine according to the first embodiment comprises an inner diameter side member 71 formed of a first material 81 which is relatively dense and rigid, forming an annular shape with respect to an axis O and forming a portion radially inward with respect to the axis O, and an outer diameter side member 72 which is coupled to the radially outward side of the inner diameter side member 71 and formed of a second material 82 which is relatively dense and rigid.

[0046] According to the above configuration, the radially inner portion, where greater circumferential stress is generated when rotational force is applied, is formed of a first material 81 that is high-density and possesses high rigidity and high strength reliability. This allows it to adequately resist the circumferential stress. On the other hand, the radially outer portion, where circumferential stress is relatively small, is formed of a second material 82 that is low-density and high-rigidity. This allows for weight reduction while maintaining rigidity.

[0047] (2) The rotating disc 41 according to the second embodiment is the rotating disc 41 of (1), wherein the first material 81 is a metallic material and the second material 82 is a composite material having a fibrous material and a base material impregnated with the fibrous material.

[0048] According to the above configuration, high rigidity can be ensured by using a metal material as the first material 81 on the radially inner side, while low density, i.e., weight reduction, can be achieved by using a composite material as the second material 82 on the radially outer side. Furthermore, since composite materials have excellent vibration characteristics, it is possible to reduce vibration of the entire rotating machine disk 41. In addition, by changing the orientation of the fiber material, anisotropy can be introduced into the composite material, so that weight reduction can be maximized while ensuring the necessary stress margin.

[0049] (3) The rotating disc 41 according to the third embodiment is the rotating disc 41 according to (1) or (2), further comprising an inner diameter side lattice structure 74 which is coupled to the inner diameter side member 71 in the radial direction and has a plurality of beams that extend at least radially and circumferentially.

[0050] According to the above configuration, by having a low-density and low-rigidity inner diameter lattice structure 74, when a rotational force is applied, the inner diameter lattice structure 74 preferentially tries to deform. As a result, the circumferential stress borne by the inner diameter lattice structure 74 is reduced. This makes it possible to equalize the distribution of circumferential stress in the radial direction and to reduce the overall weight of the rotating machine disk 41.

[0051] (4) The rotating disc 41 according to the fourth embodiment is the rotating disc 41 according to (2) or (3), further comprising a connecting portion 75 that connects the inner diameter side member 71 and the outer diameter side member 72, wherein the connecting portion 75 comprises an intermediate lattice structure 91 integrally connected to the inner diameter side member 71 and having a plurality of beams extending at least radially and circumferentially, and a connecting base material 92 formed of the base material of the composite material that forms the outer diameter side member 72, and filling the gaps in the intermediate lattice structure 91.

[0052] According to the above configuration, the inner diameter member 71 and the outer diameter member 72 are joined by a connecting portion 75. The connecting portion 75 is composed of an intermediate lattice structure 91 integrally formed with the inner diameter member 71 and a base material portion of the composite material impregnated into this intermediate lattice structure 91. This makes it possible to more firmly join the inner diameter member 71 and the outer diameter member 72.

[0053] (5) The rotating disc 41 according to the fifth embodiment comprises an annular shape centered on an axis O, an inner diameter side member 71 which forms the radially inner portion with respect to the axis O and is made of a third material 83 which has relatively low density and low rigidity, and an outer diameter side member 72 which forms the radially outer portion and is made of a fourth material 84 which has relatively high density and high rigidity.

[0054] According to the above configuration, by having an inner diameter side member 71 made of a third material 83 that is low density and low rigidity, when a rotational force is applied, the inner diameter side member 71 preferentially tries to deform. As a result, the circumferential stress borne by the inner diameter side member 71 is reduced. This makes it possible to make the distribution of circumferential stress in the radial direction uniform and to reduce the overall weight of the rotating machine disk 41.

[0055] (6) The rotating disc 41 according to the sixth embodiment is the rotating disc 41 of (5), wherein the third material 83 is a lattice structure 76 having a plurality of beams extending at least radially and circumferentially, and the fourth material 84 is a solid metal material.

[0056] According to the above configuration, by using a lattice structure 76 as the third material 83, it is easy to achieve low density and low rigidity of the inner diameter side member 71. Furthermore, by using a solid metal material as the fourth material 84, it is easy to achieve high density and high rigidity of the outer diameter side member 72.

[0057] (7) The seventh embodiment of the rotating machine disk 41 comprises a rotating machine disk 41 according to any one embodiment of (1) to (6), a plurality of blades extending radially outward from the rotating machine disk 41 and arranged in the circumferential direction, and a casing 62 covering the blades from the outer circumference.

[0058] According to the above configuration, by having a lightweight rotating disc 41, it is possible to realize a rotating machine that can be operated more stably and efficiently. [Explanation of symbols]

[0059] 1… Turbofan engine 10... Compressor 11… Compressor rotor 12… Compressor blades 13… Compressor casing 14… Compressor stator vanes 15…Air intake 20... Combustor 30... Turbine 31... Turbine rotor 32... Turbine blades 33... Turbine casing 34... Turbine stator blades 35... Exhaust vent 40... Turbofan 41…Disk 42...Fanblade 43… Disc itself 44... Rib 50... Duct 61... Rotor 62…Casing 71... Inner diameter side member 72...Outer diameter side member 73... Joint 74…Inner diameter side lattice structure 75...Joining part 76... Lattice structure 81...First ingredient 82...Second ingredient 83... The third ingredient 84...The fourth ingredient 91...Intermediate Lattice Structure 92…Binding base material 101...Radial beam 102…Circumferential beam F... Bypass channel O…Axis line

Claims

1. An inner diameter side member formed of a first material that is relatively dense and rigid, forming an annular shape centered on the axis and having a radially inward portion relative to the axis, An outer diameter side member is bonded to the radially outer side of the inner diameter side member and is formed of a second material that is relatively low in density and high in rigidity, A connecting portion that connects the inner diameter side member and the outer diameter side member, Equipped with, The first material is a metallic material, and the second material is a composite material having a fibrous material and a substrate impregnated with the fibrous material. The connecting portion has a plurality of beams extending at least radially and circumferentially, and an intermediate lattice structure integrally connected to the inner diameter side member, A bonding base material formed from the base material of the composite material forming the outer diameter side member, which fills the gaps in the intermediate lattice structure, A disc for a rotating machine having the following features.

2. The disc for a rotating machine according to claim 1, further comprising an inner diameter lattice structure having a plurality of beams that are further connected radially inward to the inner diameter member and extend at least radially and circumferentially.

3. A disc for a rotating machine according to claim 1 or 2, Multiple blades extending radially outward from the disc for the rotating machine and arranged circumferentially, A casing that covers the blade from the outer circumference, A rotating machine equipped with the following features.

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