Fluid machine

Abstract

To provide a fluid machine for easily enhancing the conversion efficiency between the energy of fluid and the rotating energy of a rotary body.SOLUTION: A fluid machine 100 includes: a support 1; a rotary body 2 supported rotatably around a first axis X1 with respect to the support 1; a plurality of blade bodies 3 each supported rotatably around a second axis X2 with respect to the rotary body 2; and a linkage mechanism 4 for linking the rotation of the rotary body 2 around the first axis X1 and the rotation of blade bodies 3 around the second axis X2. The linkage mechanism 4 includes: a reaction force element 41 supported by the support 1; a rotating element 42 to be rotated integrally with each of the plurality of blade bodies 3; and a connection element 43 connecting each of the plurality of rotating elements 42 and the reaction force element 41 to be driven. The direction of rotation around the first axis X1 of the rotary body 2 and the direction of rotation around the second axis X2 of the blade body 3 are opposite to each other, and the rotation cycle around the second axis X2 of the blade body 3 is twice the rotation cycle around the first axis X1 of the rotary body 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fluid machine comprising a support, a rotating body supported on the support so as to be freely rotatable relative to the support around a first axis, and a number of blade bodies that rotate due to fluid pressure, each of which is supported on the rotating body so as to be freely rotatable relative to the rotating body around a second axis parallel to the first axis. [Background technology]

[0002] An example of such a fluid machine is disclosed in the following Patent Document 1. In the following description of the background art, reference symbols in Patent Document 1 will be cited in parentheses.

[0003] In the fluid machine (1) of Patent Document 1, the swing range of each of the vanes (400) is restricted by the swing device (600) so that the vanes (400) can swing freely within a predetermined range. Thus, each of the vanes (400) is in a position to receive or to let go of a fluid depending on the phase around the rotation axis of the rotor (700). As a result, the rotor (700) can be rotated regardless of the flow direction of the fluid. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2013-545019 Summary of the Invention [Problem to be solved by the invention]

[0005] In the fluid machine (1) of Patent Document 1, the plurality of blade bodies (400) oscillate independently of one another and also oscillate independently of the rotor (700). This causes a problem of poor efficiency in converting fluid energy into rotational energy of the rotor (700).

[0006] It is therefore desirable to realize a fluid machine that can easily increase the conversion efficiency between the energy of the fluid and the rotational energy of the rotor. [Means for solving the problem]

[0007] In view of the above, the characteristic configuration of the fluid machine is as follows: A support; a rotor supported by the support so as to be rotatable relative to the support about a first axis; A fluid machine comprising: a plurality of blade bodies each supported by the rotor so as to be rotatable relative to the rotor about a second axis parallel to the first axis, and each blade body rotates due to a pressure of a fluid, a linking mechanism for linking the rotation of the rotor about the first axis with the rotation of each of the plurality of blades about the second axis relative to the rotor, the interlocking mechanism includes a reaction element supported by the support body, a rotation element that rotates integrally with each of the plurality of blade bodies, and a connection element that drivingly connects each of the plurality of rotation elements to the reaction element, The interlocking mechanism is configured such that the rotation direction of the rotating body about the first axis and the rotation direction of each of the multiple blade bodies about the second axis are opposite to each other, and the rotation period of each of the multiple blade bodies about the second axis is twice the rotation period of the rotating body about the first axis.

[0008] According to this characteristic configuration, the rotation of the rotor around the first axis and the rotation of each of the blades around the second axis relative to the rotor are linked so that each of the blades rotates 1 / 2 around the second axis in the opposite direction to the rotation direction of the rotor while the rotor rotates once around the first axis. This makes it easy to set the orientation of each of the blades to an appropriate orientation according to the rotation of the rotor. Therefore, it is easy to increase the conversion efficiency between the energy of the fluid and the rotational energy of the rotor. [Brief description of the drawings]

[0009] [Figure 1]FIG. 1 is a cross-sectional view showing a main part of a fluid machine according to a first embodiment. [Diagram 2] FIG. 1 is a diagram showing an example of the revolution phase and the rotation phase of a blade body. [Diagram 3] FIG. 1 is a cross-sectional view showing a generator, a gearbox, and an engagement device included in a fluid machine according to a first embodiment; [Figure 4] FIG. 13 is a diagram showing an example of an adjustment process performed by a phase change device; [Diagram 5] FIG. 13 is a diagram showing an example of an adjustment process performed by a phase change device; [Figure 6] FIG. 11 is a partially enlarged cross-sectional view showing a main part of a fluid machine according to a second embodiment; [Figure 7] FIG. 13 is a diagram showing a vehicle equipped with a fluid machine according to a third embodiment. [Figure 8] Cross-sectional view taken along the line VIII-VIII in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] 1. First embodiment Hereinafter, a fluid machine 100 according to a first embodiment will be described with reference to FIGS.

[0011] As shown in FIGS. 1 and 2, the fluid machine 100 includes a support body 1, a rotor 2, a plurality of blade bodies 3, and an interlocking mechanism 4.

[0012] The support 1 is formed in a columnar shape (for example, a cylindrical shape, a rectangular pillar shape, etc.) In this embodiment, the support 1 is formed in a cylindrical shape.

[0013] The rotating body 2 is supported by the support 1 so as to be rotatable relative to the support 1 about a first axis X1. Here, the first axis X1 is the axis of the support 1.

[0014] In the following description, a direction parallel to the first axis X1 is referred to as a "first axial direction L1". One side of the first axial direction L1 is referred to as a "first side L11", and the other side of the first axial direction L1 is referred to as a "second side L12". A direction perpendicular to the first axis X1 is referred to as a "first radial direction R1". In this embodiment, the first axial direction L1 is a vertical direction. The first side L11 is the upper side in the vertical direction, and the second side L12 is the lower side in the vertical direction. The first axial direction L1 corresponds to the "axial direction". The first side L11 corresponds to the "axial first side", and the second side L12 corresponds to the "axial second side".

[0015] As shown in FIG. 1, in this embodiment, the rotating body 2 includes a cylindrical portion 21, a first support portion 22, a second support portion 23, and an output portion 24.

[0016] The cylindrical portion 21 is formed in a cylindrical shape with the first axis X1 as its axis. The cylindrical portion 21 is disposed so as to surround the support 1 from the outside in the first radial direction R1.

[0017] The first support portion 22 and the second support portion 23 are configured to rotatably support a plurality of blade bodies 3. The first support portion 22 and the second support portion 23 are formed to extend outward from the cylindrical portion 21 in the first radial direction R1. In this embodiment, the first support portion 22 is connected to an end portion of the first side L11 of the cylindrical portion 21. The second support portion 23 is connected to an end portion of the second side L12 of the cylindrical portion 21. That is, in this embodiment, the second support portion 23 is disposed on the second side L12 from the first support portion 22. In the example shown in FIG. 2, when viewed from the direction along the first axis X1, each of the first support portion 22 and the second support portion 23 is formed in a cross shape, and each of the four tip portions supports a blade body 3. That is, in this example, the four blade bodies 3 are disposed at equal intervals in the circumferential direction of the first axis X1 on the outside of the first radial direction R1 with respect to the first axis X1. In other words, in this example, adjacent ones of the four vanes 3 are arranged with a phase difference of 90° in the circumferential direction of the first axis X1.

[0018] The output portion 24 is disposed on the second side L12 from the cylindrical portion 21. The output portion 24 is formed in a cylindrical shape with the first axis X1 as its axis. The output portion 24 is disposed so as to surround the support 1 from the outside in the first radial direction R1.

[0019] In this embodiment, the second support portion 23 includes a first wall portion 231, a second wall portion 232, and a plurality of side wall portions 233.

[0020] The first wall portion 231 and the second wall portion 232 are disposed spaced apart from each other in the first axial direction L1. The second wall portion 232 is disposed on a second side L12 with respect to the first wall portion 231. In this embodiment, the first wall portion 231 is formed in a plate shape extending outward in the first radial direction R1 from the cylindrical portion 21. And the second wall portion 232 is formed in a plate shape extending outward in the first radial direction R1 from the output portion 24.

[0021] Each of the multiple side wall portions 233 is formed so as to connect the first wall portion 231 and the second wall portion 232. In this embodiment, each of the multiple side wall portions 233 extends along the first axial direction L1 so as to connect an outer end portion of the first wall portion 231 in the first radial direction R1 and an outer end portion of the second wall portion 232 in the first radial direction R1. In this example, the side wall portions 233 are disposed at each of four tip portions of the second support portion 23 formed in a cross shape when viewed from a direction along the first axis X1.

[0022] Each of the vanes 3 rotates due to the pressure of a fluid F (see FIG. 2). In this embodiment, the fluid F is air. Each of the vanes 3 is supported by the rotor 2 so as to be rotatable relative to the rotor 2 around a second axis X2 parallel to the first axis X1. That is, the vanes 3 are arranged in a dispersed manner in the circumferential direction of the first axis X1 on the outside of the first radial direction R1 relative to the first axis X1. In the example shown in FIG. 2, four vanes 3 are arranged at equal intervals in the circumferential direction of the first axis X1 on the outside of the first radial direction R1 relative to the first axis X1. That is, in this example, adjacent ones of the four vanes 3 are arranged with a phase difference of 90° in the circumferential direction of the first axis X1.

[0023] In this embodiment, the blade body 3 includes a first shaft portion 31, a second shaft portion 32, a first frame portion 33, a second frame portion , a pair of mounting portions 35, and a pressure-receiving portion .

[0024] Each of the first shaft portion 31 and the second shaft portion 32 is formed in an axial shape with the second axis X2 as its axis. Each of the first shaft portion 31 and the second shaft portion 32 is supported so as to be rotatable around the second axis X2. The first shaft portion 31 is arranged so as to penetrate the first support portion 22 in the first axis direction L1. The first shaft portion 31 is supported so as to be rotatable relative to the first support portion 22. The second shaft portion 32 is arranged so as to penetrate the first wall portion 231 of the second support portion 23 in the first axis direction L1. The second shaft portion 32 is supported so as to be rotatable relative to the first wall portion 231 and the second wall portion 232 of the second support portion 23.

[0025] The first frame portion 33 and the second frame portion 34 are each formed to extend along a direction perpendicular to the second axis X2. The first frame portion 33 is connected to the first shaft portion 31 so as to rotate integrally therewith. The second frame portion 34 is connected to the second shaft portion 32 so as to rotate integrally therewith. In other words, the first frame portion 33 and the second frame portion 34 are disposed spaced apart from each other in the first axial direction L1.

[0026] The pair of mounting portions 35 are formed to extend along the first axial direction L1. The pair of mounting portions 35 are arranged to connect the first frame portion 33 and the second frame portion 34. The pair of mounting portions 35 are arranged to be spaced apart from each other in a direction perpendicular to the second axis X2.

[0027] The pressure-receiving portion 36 is attached to the pair of attachment portions 35 so as to receive the pressure of the fluid F. In this embodiment, the pressure-receiving portion 36 is configured using a flexible sheet-like member. Note that FIG. 2 and other figures show the pressure-receiving portion 36 in a curved state due to the pressure of the fluid F.

[0028] The interlocking mechanism 4 is configured to interlock the rotation of the rotor 2 about the first axis X1 with the rotation of each of the multiple vane bodies 3 about the second axis X2 relative to the rotor 2. Here, "the rotation of the rotor 2 about the first axis X1 and the rotation of each of the multiple vane bodies 3 about the second axis X2 relative to the rotor 2 are interlocked" refers to maintaining a constant relationship between the revolution period and the rotation period of each of the multiple vane bodies 3.

[0029] As shown in FIG. 1, the interlocking mechanism 4 includes a reaction element 41, a plurality of rotation elements 42, and a plurality of connecting elements 43.

[0030] The reaction element 41 is supported by the support 1. The reaction element 41 is restricted from rotating relative to the support 1 at least to one side in the circumferential direction of the first axis X1. In this embodiment, the reaction element 41 is supported by the support 1 via a one-way clutch 40. The one-way clutch 40 is configured to allow the reaction element 41 to rotate relative to the support 1 to one side in the circumferential direction of the first axis X1 and restrict the reaction element 41 to rotate relative to the support 1 to the other side in the circumferential direction of the first axis X1. In the example shown in FIG. 2, the one-way clutch 40 allows the reaction element 41 to rotate clockwise relative to the support 1 and restricts the reaction element 41 to rotate counterclockwise relative to the support 1.

[0031] Each of the plurality of rotating elements 42 is configured to rotate integrally with the corresponding blade body 3. Each of the plurality of connecting elements 43 is configured to drivingly connect the corresponding rotating element 42 and the reaction element 41.

[0032] Here, in this application, "driving connection" refers to a state in which two rotating elements are connected so as to be able to transmit a driving force, and includes a state in which the two rotating elements are connected so as to rotate integrally, or a state in which the two rotating elements are connected so as to be able to transmit a driving force via one or more transmission members. Such transmission members include various members that transmit rotation at the same speed or at a variable speed, such as shafts, gear mechanisms, belts, chains, etc. Note that the transmission members may also include engagement devices that selectively transmit rotation and driving force, such as friction engagement devices and meshing engagement devices.

[0033] In this embodiment, the reaction element 41 includes a plurality of first sprockets 411. The number of the first sprockets 411 is the same as the number of the blades 3 (four in this example). The plurality of first sprockets 411 are fixed to each other. The plurality of first sprockets 411 are arranged so as to surround the support 1 from the outside in the first radial direction R1. The plurality of first sprockets 411 are arranged side by side in the first axial direction L1. In this embodiment, the one-way clutch 40 is arranged between the plurality of first sprockets 411 and the support 1 in the first radial direction R1. As a result, the plurality of first sprockets 411 are allowed to rotate relative to the support 1 to one side in the circumferential direction of the first axis X1, and are restricted from rotating relative to the support 1 to the other side in the circumferential direction of the first axis X1.

[0034] Each of the multiple rotating elements 42 includes a second sprocket 421. The number of second sprockets 421 provided is the same as the number of first sprockets 411 (four in this example). Each of the multiple second sprockets 421 is connected to the second shaft portion 32 of the corresponding blade body 3 so as to rotate integrally with the second sprocket. Each of the multiple second sprockets 421 is arranged so as to be aligned with the corresponding first sprocket 411 in the first axial direction L1. In other words, the multiple second sprockets 421 are arranged at different positions in the first axial direction L1 from each other.

[0035] Each of the multiple connecting elements 43 includes a chain 431 wound around a corresponding first sprocket 411 and a corresponding second sprocket 421 .

[0036] 2, the interlocking mechanism 4 is configured so that the direction of rotation of the rotor 2 about the first axis X1, i.e., the orbital direction of each of the plurality of blade bodies 3, and the direction of rotation (the direction of rotation about the second axis X2) of each of the plurality of blade bodies 3 are opposite to each other. In the example shown in FIG. 2, the orbital direction of the blade body 3 is counterclockwise, and the rotation direction of the blade body 3 is clockwise.

[0037] The interlocking mechanism 4 is configured so that the rotation period of each of the multiple blade bodies 3 about the second axis X2 (the rotation period of the blade body 3) is twice the rotation period of the rotating body 2 about the first axis X1 (the orbital period of the blade body 3).

[0038] In the following description, the phase of the blade body 3 about the first axis X1 is referred to as the "revolution phase", and the phase of the blade body 3 about the second axis X2 relative to the rotor 2 is referred to as the "rotation phase".

[0039] In this embodiment, the interlocking mechanism 4 constrains the relationship between the rotation phases of the multiple blade bodies 3 so that the rotor 2 rotates in one direction when the fluid F flows along the reference direction D. To explain further, the interlocking mechanism 4 maintains a constant difference in the rotation phases of the blade bodies 3 adjacent to each other about the first axis X1 so that the angle of attack of each of the multiple blade bodies 3 (here, the angle between the flow direction of the fluid F and the direction in which the pair of mounting portions 35 are arranged) is optimized when the fluid F flows along the reference direction D. In the example shown in FIG. 2, the interlocking mechanism 4 is configured so that the difference in the rotation phases of the blade bodies 3 adjacent to each other about the first axis X1 is 45°.

[0040] The reference direction D is a specific direction among the directions (first radial direction R1) perpendicular to the first axis X1. The reference direction D is determined according to the revolution phase and the rotation phase of each of the multiple blade bodies 3. In the example shown in Fig. 2, the reference direction D is the direction from the blade body 3 located at the bottom side in Fig. 2 to the blade body 3 located at the top side in Fig. 2.

[0041] Here, an example of the revolution phase and the rotation phase of the blade body 3 will be described with reference to Fig. 2. In the following description with reference to Fig. 2, "upper", "lower", "left" and "right" refer to the upper, lower, left and right on the paper surface of Fig. 2, and the same applies to the description with reference to Figs. 4 and 5 described later.

[0042] 2, the fluid F flows from bottom to top along the reference direction D. In this case, if the revolution phase and the rotation phase of the blade body 3 located on the left of the revolution trajectory are each 0°, the process in which the blade body 3 rotates once around the second axis X2, that is, the process in which the rotation phase of the blade body 3 changes from 0° to 360°, is as follows. In this example, the rotation phase is based on the direction in which the pair of mounting parts 35 of the blade body 3 are aligned.

[0043] When the blade body 3 is located at the lower left of the revolution locus (when the revolution phase is 45°), the rotation phase is 22.5°. When the blade body 3 is located below the revolution locus (when the revolution phase is 90°), the rotation phase is 45°. When the blade body 3 is located at the lower right of the revolution locus (when the revolution phase is 135°), the rotation phase is 67.5°. When the blade body 3 is located to the right of the revolution locus (when the revolution phase is 180°), the rotation phase is 90°. When the blade body 3 is located at the upper right of the revolution locus (when the revolution phase is 225°), the rotation phase is 112.5°. When the blade body 3 is located above the revolution locus (when the revolution phase is 270°), the rotation phase is 135°. When the blade body 3 is located at the upper left of the revolution trajectory (when the revolution phase is 315°), the rotation phase is 157.5°. When the blade body 3 is again located at the left of the revolution trajectory, that is, when the blade body 3 has completed one revolution around the first axis X1 (when the revolution phase is 360°), the rotation phase is 180°.

[0044] Furthermore, when the blade body 3 is located at the lower left of the revolution locus (when the revolution phase is 405°), the rotation phase is 202.5°. When the blade body 3 is located below the revolution locus (when the revolution phase is 450°), the rotation phase is 225°. When the blade body 3 is located at the lower right of the revolution locus (when the revolution phase is 495°), the rotation phase is 247.5°. When the blade body 3 is located to the right of the revolution locus (when the revolution phase is 540°), the rotation phase is 270°. When the blade body 3 is located at the upper right of the revolution locus (when the revolution phase is 585°), the rotation phase is 292.5°. When the blade body 3 is located above the revolution locus (when the revolution phase is 630°), the rotation phase is 315°. When the blade body 3 is located at the upper left of the revolution trajectory (when the revolution phase is 675°), the rotation phase is 337.5°. When the blade body 3 is again located at the left of the revolution trajectory, that is, when the blade body 3 has made two revolutions around the first axis X1 (when the revolution phase is 720°), the rotation phase is 360°.

[0045] In Fig. 2, "V1" is the velocity vector of the fluid F, and "V2" is the peripheral speed vector of the blade body 3 (a vector along the tangent to the revolution trajectory of the second axis X2). "V3" is the resultant vector of the velocity vector V1 of the fluid F and the peripheral speed vector V2 of the blade body 3. "V4" is the vector of lift acting on the blade body 3 according to the resultant vector V3 in a direction perpendicular to the resultant vector V3.

[0046] As described above, the fluid machine 100 has the following features: Support 1; a rotor 2 supported by the support 1 so as to be rotatable relative to the support 1 about a first axis X1; A fluid machine 100 including a plurality of blade bodies 3 each supported by a rotor 2 so as to be rotatable relative to the rotor 2 about a second axis X2 parallel to a first axis X1, and rotated by pressure of a fluid F, The rotor 2 further includes a linking mechanism 4 linking the rotation of the rotor 2 about the first axis X1 with the rotation of each of the plurality of blades 3 about a second axis X2 relative to the rotor 2, The interlocking mechanism 4 includes a reaction element 41 supported by the support 1, a rotating element 42 that rotates integrally with each of the plurality of blade bodies 3, and a connecting element 43 that drivingly connects each of the plurality of rotating elements 42 to the reaction element 41, The interlocking mechanism 4 is configured such that the rotation direction of the rotating body 2 about the first axis X1 and the rotation direction of each of the multiple blade bodies 3 about the second axis X2 are opposite to each other, and the rotation period of each of the multiple blade bodies 3 about the second axis X2 is twice the rotation period of the rotating body 2 about the first axis X1.

[0047] According to this configuration, the rotation of the rotor 2 about the first axis X1 and the rotation of each of the plurality of blade bodies 3 about the second axis X2 relative to the rotor 2 are linked so that each of the plurality of blade bodies 3 rotates 1 / 2 around the second axis X2 in the opposite direction to the rotation direction of the rotor 2 while the rotor 2 rotates once around the first axis X1. This makes it easy to set the orientation of each of the plurality of blade bodies 3 to an appropriate orientation according to the rotation of the rotor 2. Therefore, it is easy to increase the efficiency of conversion between the energy of the fluid F and the rotational energy of the rotor 2.

[0048] As shown in Fig. 1, in this embodiment, the rotating body 2 includes an accommodation chamber C. The accommodation chamber C is a space that accommodates the reaction element 41, the multiple rotation elements 42, and the multiple connection elements 43 of the interlocking mechanism 4. The accommodation chamber C is formed between the first wall portion 231 and the second wall portion 232 in the first axial direction L1. In this embodiment, the space between the first wall portion 231 and the second wall portion 232 in the first axial direction L1 and on the inside of the multiple side wall portions 233 in the first radial direction R1 is formed as the accommodation chamber C.

[0049] In this embodiment, the support body 1 is disposed so as to penetrate the accommodation chamber C in the first axial direction L1 along the first axis X1. In the example shown in Fig. 1, the support body 1 is disposed so as to penetrate the first wall portion 231 in the first axial direction L1, but not to penetrate the second wall portion 232 in the first axial direction L1.

[0050] In this embodiment, the reaction element 41 is supported by a portion of the support body 1 that is disposed inside the accommodation chamber C. That is, in this embodiment, the reaction element 41 is supported by a portion of the support body 1 that is located between the first wall portion 231 and the second wall portion 232 in the first axial direction L1.

[0051] In this embodiment, each of the multiple rotating elements 42 includes a first supported portion 42a rotatably supported by the first wall portion 231, and a second supported portion 42b rotatably supported by the second wall portion 232. In this embodiment, the first supported portion 42a and the second supported portion 42b are integrally formed with the second shaft portion 32 of the corresponding blade body 3.

[0052] In this embodiment, each of the multiple connecting elements 43 drivingly connects a corresponding one of the multiple rotating elements 42 to the reaction element 41 inside the accommodation chamber C. In this embodiment, the chain 431 of each of the multiple connecting elements 43 is arranged to extend along the first radial direction R1 between the first wall portion 231 and the second wall portion 232 in the first axial direction L1.

[0053] Thus, in this embodiment, the rotating body 2 includes the first wall portion 231, the second wall portion 232 arranged on the second side L12 away from the first wall portion 231, and an accommodation chamber C formed between the first wall portion 231 and the second wall portion 232 in the first axial direction L1, and accommodating the reaction element 41, the plurality of rotation elements 42, and the plurality of connecting elements 43. The support 1 is disposed so as to penetrate the accommodation chamber C in the first axial direction L1 along the first axis X1, The reaction element 41 is supported by a portion of the support 1 that is disposed inside the storage chamber C, Each of the multiple rotation elements 42 includes a first supported portion 42a rotatably supported by the first wall portion 231 and a second supported portion 42b rotatably supported by the second wall portion 232, Each of the multiple connection elements 43 drivingly connects a corresponding one of the multiple rotation elements 42 to the reaction element 41 inside the accommodation chamber C.

[0054] According to this configuration, at least the main part of the interlocking mechanism 4 can be accommodated in the accommodation chamber C of the rotating body 2. Therefore, the interlocking mechanism 4 can be made less susceptible to the effects of external foreign matter. Furthermore, energy loss caused by the interlocking mechanism 4 being subjected to the pressure of the fluid F can be kept small.

[0055] As described above, in this embodiment, the reaction element 41 includes a plurality of first sprockets 411 arranged side by side in the first axial direction L1, each of the plurality of rotating elements 42 includes a second sprocket 421 that is paired with a corresponding one of the plurality of first sprockets 411, and each of the plurality of connecting elements 43 includes a chain 431 wound around the paired first sprocket 411 and second sprocket 421. However, without being limited to such a configuration, the reaction element 41 may include a plurality of first pulleys arranged side by side in the first axial direction L1 instead of the plurality of first sprockets 411, each of the plurality of rotating elements 42 includes a second pulley that is paired with a corresponding one of the plurality of first pulleys instead of the second sprocket 421, and each of the plurality of connecting elements 43 may include a belt wound around the paired first pulley and second pulley instead of the chain 431.

[0056] Thus, the reaction element 41 includes a plurality of first sprockets 411 or a plurality of first pulleys arranged side by side in the first axial direction L1, Each of the multiple rotating elements 42 includes a second sprocket 421 that is paired with a corresponding one of the multiple first sprockets 411, or a second pulley that is paired with a corresponding one of the multiple first pulleys, Each of the multiple connecting elements 43 preferably includes a chain 431 wound around a pair of a first sprocket 411 and a second sprocket 421, or a belt wound around a pair of a first pulley and a second pulley.

[0057] This configuration allows proper power transmission between the multiple rotating elements 42 and the reaction element 41. Therefore, the rotation of the rotor 2 about the first axis X1 and the rotation of each of the multiple blade bodies 3 about the second axis X2 relative to the rotor 2 can be properly linked. In particular, according to this configuration, even if the inter-axial distance between the first axis X1 and the second axis X2 is large, power transmission between the multiple rotating elements 42 and the reaction element 41 can be appropriately performed.

[0058] 3, in this embodiment, the fluid machine 100 further includes a phase change device 5. The phase change device 5 is configured to change the rotation phase with respect to the orbital phase of each of the multiple blade bodies 3. To explain further, the phase change device 5 is configured to shift the relative relationship between the origin of the orbital phase and the origin of the rotation phase of each of the multiple blade bodies 3.

[0059] In this embodiment, the phase change device 5 includes a driving source 52. In this embodiment, the driving source 52 is a generator 54. The generator 54 is configured to generate electricity using driving force transmitted from the rotating body 2 side and store the electricity in an electricity storage device (not shown). In this embodiment, the generator 54 receives power from the electricity storage device to run, and also functions as an electric motor that transmits driving force to the rotating body 2 side. As described above, in this embodiment, the fluid F is air. Therefore, in this embodiment, the fluid machine 100 is used for wind power generation.

[0060] The generator 54 includes a stator 541 and a rotor 542. The stator 541 and the rotor 542 are disposed on the third axis X3. The third axis X3 is disposed so as to be perpendicular to the first axis X1. In the following description, a direction parallel to the third axis X3 is referred to as a "second axis direction L2". One side of the second axis direction L2 is referred to as a "third side L21", and the other side of the second axis direction L2 is referred to as a "fourth side L22". In addition, a direction perpendicular to the third axis X3 is referred to as a "second radial direction R2".

[0061] The stator 541 is fixed to a non-rotating member. The rotor 542 is supported rotatably relative to the stator 541. The rotor 542 rotates in conjunction with the rotating body 2. In this embodiment, the rotor 542 is disposed on the inside of the stator 541 in the second radial direction R2. The rotor 542 is connected to the rotor shaft 543 so as to rotate integrally with the rotor shaft 543. The rotor shaft 543 is disposed on the third axis X3. The rotor shaft 543 is formed to extend along the second axial direction L2.

[0062] As shown in FIG. 3, in this embodiment, the fluid machine 100 further includes a speed increaser 6 and an engagement device 7.

[0063] The speed increaser 6 is configured to increase the rotation of the rotor 2 and transmit the increased rotation to the generator 54. In this embodiment, the speed increaser 6 includes a first speed increase gear 61, a second speed increase gear 62, a third speed increase gear 63, a fourth speed increase gear 64, a fifth speed increase gear 65, and a sixth speed increase gear 66.

[0064] The first speed-increasing gear 61 is a gear that rotates integrally with the rotating body 2. In this embodiment, the first speed-increasing gear 61 is connected to the output portion 24 of the rotating body 2 in a state in which the first speed-increasing gear 61 protrudes outward in the first radial direction R1 from the outer circumferential surface of the output portion 24 of the rotating body 2. In addition, the first speed-increasing gear 61 is disposed on the first axis X1.

[0065] The second speed-increasing gear 62 is a gear that meshes with the first speed-increasing gear 61. The number of teeth of the second speed-increasing gear 62 is smaller than the number of teeth of the first speed-increasing gear 61. Therefore, the rotation transmitted to the first speed-increasing gear 61 is accelerated between the first speed-increasing gear 61 and the second speed-increasing gear 62. The second speed-increasing gear 62 is disposed on the third axis X3. In other words, the second speed-increasing gear 62 and the first speed-increasing gear 61 are gears (for example, bevel gears, screw gears, etc.) that mesh with each other with their axes perpendicular to each other.

[0066] The third speed-increasing gear 63 is a gear that rotates integrally with the second speed-increasing gear 62. The third speed-increasing gear 63 is disposed on the third axis X3. In this embodiment, the third speed-increasing gear 63 is disposed on the fourth side L22 with respect to the second speed-increasing gear 62.

[0067] The fourth speed-up gear 64 is a gear that rotates integrally with the rotor 542 of the generator 54. In this embodiment, the fourth speed-up gear 64 is disposed on the third axis X3. The fourth speed-up gear 64 is connected to the rotor shaft 543 so as to rotate integrally with the rotor shaft 543. The fourth speed-up gear 64 is disposed on the third side L21 of the rotor 542 and on the fourth side L22 of the third speed-up gear 63.

[0068] The fifth speed-increasing gear 65 is a gear that meshes with the third speed-increasing gear 63. In this embodiment, the fifth speed-increasing gear 65 is formed to have a smaller diameter than the third speed-increasing gear 63. In addition, the fifth speed-increasing gear 65 is disposed on a fourth axis X4 that is parallel to the third axis X3.

[0069] The sixth speed-increasing gear 66 is a gear that meshes with the fourth speed-increasing gear 64. The sixth speed-increasing gear 66 is connected to the fifth speed-increasing gear 65 so as to rotate integrally with the fifth speed-increasing gear 65. The sixth speed-increasing gear 66 is disposed on the fourth axis X4. In this embodiment, the sixth speed-increasing gear 66 is formed to have a larger diameter than the fourth speed-increasing gear 64 and the fifth speed-increasing gear 65.

[0070] The number of teeth of the fifth speed-up gear 65 is smaller than the number of teeth of the third speed-up gear 63. The number of teeth of the fourth speed-up gear 64 is smaller than the number of teeth of the sixth speed-up gear 66 which rotates integrally with the fifth speed-up gear 65. Therefore, the rotation transmitted from the second speed-up gear 62 to the third speed-up gear 63 is accelerated between the third speed-up gear 63 and the fifth speed-up gear 65, and is transmitted to the sixth speed-up gear 66. The rotation of the sixth speed-up gear 66 is accelerated between the sixth speed-up gear 66 and the fourth speed-up gear 64, and is transmitted to the rotor 542.

[0071] In this manner, in this embodiment, the generator 54 serving as the driving source 52 and the rotating body 2 are drivingly connected via the speed increaser 6.

[0072] Here, in this embodiment, the one-way clutch 40 restricts the relative rotation between the reaction element 41 and the support 1 in a torque transmission state during power generation of the generator 54. As a result, the pressure of the fluid F causes the multiple vane bodies 3 to rotate (spin) about the second axis X2 and rotate (revolve) about the first axis X1. Accordingly, the rotating body 2 rotates in a direction in which the generator 54 can generate power (counterclockwise in the example shown in FIG. 2).

[0073] On the other hand, the one-way clutch 40 allows the relative rotation between the reaction element 41 and the support 1 in a torque transmission state during power running of the generator 54. In this state, the generator 54 receives power from the power storage device and runs, causing the rotating body 2 to rotate in the opposite direction to the above case (clockwise in the example shown in FIG. 2). At this time, since the one-way clutch 40 is in a state in which the relative rotation between the reaction element 41 and the support 1 is permitted, the reaction element 41 of the interlocking mechanism 4 rotates relative to the support 1 via the multiple rotating elements 42 and the multiple connecting elements 43 in the interlocking mechanism 4. In this way, the generator 54 changes the positional relationship between the reaction element 41 and the support 1 around the first axis X1.

[0074] The engagement device 7 is a brake for decelerating the rotation of the rotor 542 of the generator 54. In this embodiment, the engagement device 7 is a friction engagement type brake. The friction engagement type brake is configured to be able to control the engagement state (engaged state / released state) according to the engagement pressure of a pair of friction engagement members.

[0075] In this embodiment, the phase change device 5 executes an adjustment process for adjusting the rotation phase of each of the plurality of blade bodies 3 relative to the revolution phase so that the reference direction D approaches the flow direction of the fluid F.

[0076] Here, an example of the adjustment process by the phase changer 5 will be described with reference to FIGS.

[0077] 4, when the state in which the fluid F flows from bottom to top (see FIG. 2) changes to a state in which the fluid F flows from left to right, the reference direction D becomes perpendicular to the flow direction of the fluid F. In this embodiment, the fluid machine 100 includes a detection device (not shown) such as a wind direction sensor, and the flow direction of the fluid F can be detected by the detection device.

[0078] In the above state, the generator 54 of the phase change device 5 powers the rotor 2 to rotate clockwise. As described above, in this example, the one-way clutch 40 allows the reaction element 41 to rotate clockwise relative to the support 1. Therefore, when the rotor 2 rotates clockwise, each of the multiple vanes 3 revolves clockwise relative to the rotor 2 without rotating on its own axis.

[0079] 5, the generator 54 rotates the rotor 2 so that the reference direction D is aligned with the flow direction of the fluid F. That is, in this example, the generator 54 rotates the rotor 2 by 90° clockwise so that the rotor 2 changes from the state shown in FIG. 4 to the state shown in FIG.

[0080] 2. Second embodiment A fluid machine 100 according to a second embodiment will be described below with reference to Fig. 6. In this embodiment, the interlocking mechanism 4 is different from that in the first embodiment. The following description will focus on the differences from the first embodiment. Note that points that are not particularly described are the same as those in the first embodiment.

[0081] As shown in FIG. 6, in this embodiment, the reaction element 41 of the interlocking mechanism 4 includes a first bevel gear 412.

[0082] The first bevel gear 412 is a bevel gear arranged on the first axis X1. In this embodiment, the one-way clutch 40 is arranged between the first bevel gear 412 and the support 1 in the first radial direction R1. This allows the first bevel gear 412 to rotate relative to the support 1 to one side in the circumferential direction of the first axis X1, and restricts the first bevel gear 412 from rotating relative to the support 1 to the other side in the circumferential direction of the first axis X1. The first bevel gear 412 is arranged such that the teeth of the first bevel gear 412 face the first side L11.

[0083] In this embodiment, each of the multiple rotating elements 42 in the interlocking mechanism 4 includes a second bevel gear 422. Each of the multiple second bevel gears 422 is a bevel gear arranged on the second axis X2. Each of the multiple second bevel gears 422 is connected to the second shaft portion 32 of the corresponding blade body 3 so as to rotate integrally with the second bevel gear 422. In this embodiment, each of the multiple second bevel gears 422 is arranged so that the teeth of the second bevel gear 422 face the second side L12.

[0084] In this embodiment, each of the multiple connecting elements 43 in the interlocking mechanism 4 includes a third bevel gear 432, a fourth bevel gear 433, and a connecting shaft 434. The third bevel gear 432, the fourth bevel gear 433, and the connecting shaft 434 are provided in the same number as the blade bodies 3 (four in this example).

[0085] Each of the multiple third bevel gears 432 is a bevel gear that meshes with the first bevel gear 412. Each of the multiple third bevel gears 432 is disposed so as to rotate around an axis along the first radial direction R1.

[0086] Each of the multiple fourth bevel gears 433 is a bevel gear that meshes with a corresponding one of the multiple second bevel gears 422. Each of the multiple fourth bevel gears 433 is paired with a corresponding one of the multiple third bevel gears 432. Each of the multiple fourth bevel gears 433 is disposed to rotate around an axis along the first radial direction R1.

[0087] The connecting shaft 434 is an axial member that connects the pair of the third bevel gear 432 and the fourth bevel gear 433 so as to rotate integrally with each other. The connecting shaft 434 is formed so as to extend along the first radial direction R1.

[0088] Thus, in this embodiment, the reaction element 41 includes the first bevel gear 412 disposed on the first axis X1, Each of the multiple rotating elements 42 includes a second bevel gear 422 arranged on a second axis X2, Each of the multiple connecting elements 43 includes a third bevel gear 432 that meshes with the first bevel gear 412, a fourth bevel gear 433 that meshes with a corresponding one of the multiple second bevel gears 422 and pairs with the third bevel gear 432, and a connecting shaft 434 that connects the paired third bevel gear 432 and fourth bevel gear 433 so that they rotate integrally with each other.

[0089] This configuration allows proper power transmission between the multiple rotating elements 42 and the reaction element 41. Therefore, the rotation of the rotor 2 about the first axis X1 and the rotation of each of the multiple blade bodies 3 about the second axis X2 relative to the rotor 2 can be properly linked. In particular, according to this configuration, even if the inter-axial distance between the first axis X1 and the second axis X2 is large, power transmission between the multiple rotating elements 42 and the reaction element 41 can be appropriately performed. Furthermore, with this configuration, power transmission in the interlocking mechanism 4 is performed by meshing of gears, so that power transmission efficiency can be easily improved. Also, according to this configuration, a difference can be provided between the diameters of the third bevel gear 432 and the fourth bevel gear 433. This increases the degree of freedom in setting the diameter of the second bevel gear 422 while maintaining the relationship between the rotation period and the revolution period of the blade body 3. For example, by making the diameter of the second bevel gear 422 smaller than twice the diameter of the first bevel gear 412, the dimension of the interlocking mechanism 4 in the first radial direction R1 can be kept small.

[0090] In this embodiment as well, the phase change device 5 can execute an adjustment process for adjusting the rotation phase with respect to the revolution phase of each of the multiple blade bodies 3 so that the reference direction D approaches the flow direction of the fluid F.

[0091] 3. Third embodiment A fluid machine 100 according to a third embodiment will be described below with reference to Figs. 7 and 8. This embodiment differs from the first and second embodiments in that the fluid machine 100 is mounted on a vehicle V. The following description will focus on the differences from the first and second embodiments. Note that points that are not specifically described are the same as those in the first and second embodiments.

[0092] 7, the vehicle V is an amphibious vehicle. In the example shown in FIG 7, the vehicle V runs through water as a fluid F.

[0093] In the following description, the front side in the traveling direction of the vehicle V is referred to as the "front side T1," and the rear side in the traveling direction of the vehicle V is referred to as the "rear side T2." In addition, the direction perpendicular to the traveling direction of the vehicle V when viewed vertically is referred to as the "width direction W." One side of the width direction W is referred to as the "width direction first side W1," and the other side of the width direction W is referred to as the "width direction second side W2."

[0094] As shown in FIGS. 7 and 8, the vehicle V includes a pair of fluid machines 100 (see FIG. 8), a vehicle body B, a first wheel WH1, a pair of second wheels WH2 (see FIG. 8), and a power transmission mechanism TM.

[0095] As shown in FIG. 7, a vehicle body B includes a seat S on which a driver sits, and a handle H which the driver holds.

[0096] The first wheel WH1 and the pair of second wheels WH2 are rotatably supported on the vehicle body B. In this embodiment, the pair of second wheels WH2 are disposed on the rear side T2 of the first wheel WH1. That is, the first wheel WH1 is a front wheel, and the pair of second wheels WH2 are rear wheels.

[0097] 8, in this embodiment, one of the fluid machines 100 is disposed on a first widthwise side W1 with respect to a vehicle body B. The other fluid machine 100 is disposed on a second widthwise side W2 with respect to the vehicle body B.

[0098] In this embodiment, one of the second wheels WH2 is disposed on the first widthwise side W1 relative to the fluid machine 100 on the first widthwise side W1. The other second wheel WH2 is disposed on the second widthwise side W2 relative to the fluid machine 100 on the second widthwise side W2. In this embodiment, the pair of second wheels WH2 are disposed on the first axis X1.

[0099] As shown in FIG. 7, the power transmission mechanism TM includes a first power transmission sprocket SP1, a second power transmission sprocket SP2, and a power transmission chain CH.

[0100] The first transmission sprocket SP1 is configured to rotate in conjunction with a pedal P operated by the rider's foot. The second transmission sprocket SP2 is disposed on the first axis X1. The transmission chain CH is wound around the first transmission sprocket SP1 and the second transmission sprocket SP2.

[0101] As shown in FIG. 8, the power transmission mechanism TM further includes an input shaft IS, a pair of power transmission shafts TS, a pair of power transmission one-way clutches OC, and a pair of connecting members CM.

[0102] The input shaft IS is formed to extend along the width direction W. The input shaft IS is disposed on a first axis X1. The input shaft IS is coupled to the second transmission sprocket SP2 so as to rotate integrally therewith.

[0103] Each of the pair of transmission shafts TS is formed to extend along the width direction W. Each of the pair of transmission shafts TS is disposed on a first axis X1. Each of the pair of transmission shafts TS is connected to the second wheel WH2 so as to rotate integrally with the second wheel WH2. In addition, each of the pair of transmission shafts TS is connected to the input shaft IS via a transmission one-way clutch OC.

[0104] Each of the pair of transmission one-way clutches OC restricts the relative rotation between the transmission shaft TS and the input shaft IS when the torque is transmitted so that the vehicle V moves forward. On the other hand, each of the pair of transmission one-way clutches OC allows the relative rotation between the transmission shaft TS and the input shaft IS when the torque is transmitted so that the vehicle V moves backward.

[0105] Each of the pair of connecting members CM is a member that connects the rotating body 2 and the second wheel WH2. Each of the pair of connecting members CM is formed in a cylindrical shape extending along the first axis X1. Each of the pair of connecting members CM is disposed on the inside of the plurality of blade bodies 3 in the first radial direction R1.

[0106] In this embodiment, the support 1 is formed in a cylindrical shape extending along the first axis X1. The support 1 is disposed on the inside of the connecting member CM in the first radial direction R1. In this embodiment, the transmission shaft TS is disposed on the inside of the connecting member CM and the support 1 in the first radial direction R1.

[0107] In this embodiment, the rotor 2 is formed in a disk shape centered on the first axis X1. An accommodation chamber C is formed inside the rotor 2.

[0108] In this embodiment, each of the plurality of blade bodies 3 includes an attachment portion 35 and a pressure-receiving portion 36.

[0109] In this embodiment, the mounting portion 35 is formed to extend along the first axial direction L1 between the second wheel WH2 and the rotating body 2. In this embodiment, an end of the first side L11 of the mounting portion 35 is rotatably supported with respect to the second wheel WH2. And an end of the second side L12 of the mounting portion 35 is rotatably supported with respect to the rotating body 2 in a state where it penetrates the accommodation chamber C in the first axial direction L1.

[0110] In this embodiment, the pressure receiving portion 36 is connected to the attachment portion 35 so as to rotate integrally with the attachment portion 35. The pressure receiving portion 36 is formed in a plate shape. In this example, the pressure receiving portion 36 is formed in a flat plate shape extending along a direction perpendicular to the second axis X2.

[0111] In this embodiment, the reaction element 41 of the interlocking mechanism 4 includes a first gear 413. The first gear 413 is disposed on a first axis X1. The first gear 413 is fixed to the support 1.

[0112] Each of the multiple rotating elements 42 in the interlocking mechanism 4 includes a second gear 423. Each of the multiple second gears 423 is disposed on the second axis X2. Each of the multiple second gears 423 is connected to the corresponding attachment portion 35 of the blade body 3 so as to rotate integrally with the corresponding attachment portion 35. In this embodiment, the diameter of each of the multiple second gears 423 is set to be twice the diameter of the first gear 413.

[0113] Each of the multiple connecting elements 43 in the interlocking mechanism 4 includes a third gear 435. Each of the multiple third gears 435 meshes with both a corresponding one of the multiple second gears 423 and the first gear 413. Each of the multiple third gears 435 is supported rotatably with respect to the rotating body 2.

[0114] The interlocking mechanism 4 configured as described above is configured as a double-pinion type planetary gear mechanism without a ring gear, in which the first gear 413 functions as a sun gear, each of the multiple second gears 423 functions as a first pinion gear, and each of the multiple third gears 435 functions as a second pinion gear.

[0115] In this embodiment, the arrangement regions of the first gear 413, the multiple second gears 423, and the multiple third gears 435 overlap with each other in the first axial direction L1. In the example shown in Fig. 8, the arrangement region of the first gear 413 in the first axial direction L1 overlaps with both the arrangement region of each of the multiple second gears 423 in the first axial direction L1 and the arrangement region of each of the multiple third gears 435 in the first axial direction L1.

[0116] Thus, in this embodiment, the reaction element 41 includes the first gear 413 disposed on the first axis X1, Each of the multiple rotating elements 42 includes a second gear 423 disposed on a second axis X2, Each of the multiple connecting elements 43 includes a third gear 435 that meshes with both a corresponding one of the multiple second gears 423 and the first gear 413, The first gear 413, the multiple second gears 423, and the multiple third gears 435 are arranged in regions that overlap with each other in the first axial direction L1.

[0117] This configuration allows proper power transmission between the multiple rotating elements 42 and the reaction element 41. Therefore, the rotation of the rotor 2 about the first axis X1 and the rotation of each of the multiple blade bodies 3 about the second axis X2 relative to the rotor 2 can be properly linked. Furthermore, with this configuration, the arrangement areas of the first gear 413, the multiple second gears 423, and the multiple third gears 435 overlap each other in the first axial direction L1. Therefore, it is easy to keep the dimension of the interlocking mechanism 4 in the first axial direction L1 small.

[0118] 7, in this embodiment, the interlocking mechanism 4 is configured such that the surface of the pressure receiving portion 36 of the blade body 3 located at the lowest point of the revolution trajectory is perpendicular to the traveling direction of the vehicle V. This allows the pressure receiving portions 36 of the multiple blade bodies 3 to efficiently push water toward the rear side T2 when the amphibious vehicle V travels through water as a fluid F. This allows the efficiency of converting the rotational energy of the second wheel WH2 and the rotating body 2 into the propulsive force of the vehicle V to be improved.

[0119] In this embodiment, the vehicle V further includes a pair of electric motors MG. Each of the pair of electric motors MG is configured to be able to drive a drive gear G1. The drive gear G1 meshes with a driven gear G2 that rotates integrally with the transmission shaft TS. This allows the drive force of the electric motors MG to be used to rotate the second wheel WH2.

[0120] 4. Other embodiments (1) In the above first and second embodiments, the configuration in which the fluid F is air has been described as an example. However, the present invention is not limited to such a configuration, and it is also possible to adopt a fluid other than air, such as steam or oil, as the fluid F.

[0121] (2) In the above first and second embodiments, a configuration in which the reaction element 41 is supported by the support body 1 via the one-way clutch 40 has been described as an example. And, in the above third embodiment, a configuration in which the reaction element 41 is fixed to the support body 1 has been described as an example. However, the present invention is not limited to such a configuration, and may be configured to include, for example, a clutch that restricts the relative rotation of the reaction element 41 with respect to the support body 1 in an engaged state and allows the relative rotation of the reaction element 41 with respect to the support body 1 in a released state.

[0122] (3) In the above third embodiment, a configuration has been described as an example in which the arrangement region of the first gear 413 in the first axial direction L1 overlaps with both the arrangement region of each of the second gears 423 in the first axial direction L1 and the arrangement region of each of the third gears 435 in the first axial direction L1. However, the present invention is not limited to such a configuration, and the arrangement region of the first gear 413 in the first axial direction L1 may not overlap with the arrangement region of each of the second gears 423 in the first axial direction L1.

[0123] (4) In the above embodiment, an example was described in which the blade body 3 was provided. However, the invention is not limited to such a configuration, and the blade body 3 may be provided in three or less numbers, or may be provided in five or more numbers.

[0124] (5) The configurations disclosed in the above-described embodiments can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. As for other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be made as appropriate within the scope of the present disclosure. [Industrial Applicability]

[0125] The technology disclosed herein can be utilized in a fluid machine including a support, a rotating body supported on the support so as to be freely rotatable relative to the support about a first axis, and a number of blade bodies that rotate due to fluid pressure and are each supported on the rotating body so as to be freely rotatable relative to the rotating body about a second axis parallel to the first axis. [Explanation of symbols]

[0126] 100: fluid machine, 1: support, 2: rotating body, 231: first wall portion, 232: second wall portion, 3: blade body, 4: interlocking mechanism, 41: reaction element, 411: first sprocket, 412: first bevel gear, 413: first gear, 42: rotating element, 42a: first supported part, 42b: second supported part, 421: second sprocket, 422: second bevel gear, 423: second gear, 43: connecting element, 431: chain, 432: third bevel gear, 433: fourth bevel gear, 434: connecting shaft, 435: third gear, C: accommodation chamber, X1: first axis, X2: second axis, L1: first axial direction (axial direction), L11: first side (axial first side), L12: second side (axial second side)

Claims

1. A support; a rotor supported by the support so as to be rotatable relative to the support about a first axis; a plurality of blade bodies supported by the rotor so as to be rotatable relative to the rotor about a second axis parallel to the first axis, and rotated by a pressure of a fluid, a linking mechanism for linking the rotation of the rotor about the first axis with the rotation of each of the plurality of blades about the second axis relative to the rotor, the interlocking mechanism includes a reaction element supported by the support body, a rotation element that rotates integrally with each of the plurality of blade bodies, and a connection element that drivingly connects each of the plurality of rotation elements to the reaction element, The interlocking mechanism is configured so that the rotation direction of the rotating body about the first axis and the rotation direction of each of the multiple blade bodies about the second axis are opposite to each other, and the rotation period of each of the multiple blade bodies about the second axis is twice the rotation period of the rotating body about the first axis.

2. A direction parallel to the first axis is defined as an axial direction, one side in the axial direction is defined as an axial first side, and the other side in the axial direction is defined as an axial second side, the rotating body includes a first wall portion, a second wall portion disposed on a second axial direction side away from the first wall portion, and an accommodation chamber formed between the first wall portion and the second wall portion in the axial direction, the accommodation chamber accommodating the reaction element, a plurality of the rotating elements, and a plurality of the connecting elements; The support body is disposed so as to penetrate the accommodation chamber in the axial direction along the first axis, The reaction element is supported by a portion of the support body that is disposed inside the storage chamber, Each of the plurality of rotating elements includes a first supported portion rotatably supported on the first wall portion and a second supported portion rotatably supported on the second wall portion, The fluid machine according to claim 1 , wherein each of the plurality of connecting elements drivingly connects a corresponding one of the plurality of rotating elements to the reaction element inside the accommodation chamber.

3. A direction parallel to the first axis is defined as an axial direction, The reaction element includes a plurality of first sprockets or a plurality of first pulleys arranged side by side in the axial direction, Each of the plurality of rotating elements includes a second sprocket that is paired with a corresponding one of the plurality of first sprockets, or a second pulley that is paired with a corresponding one of the plurality of first pulleys, 3. The fluid machinery according to claim 1 or 2, wherein each of the multiple connecting elements comprises a chain wound around a pair of the first sprocket and the second sprocket, or a belt wound around a pair of the first pulley and the second pulley.

4. The reaction element includes a first bevel gear disposed on the first axis; Each of the plurality of rotating elements includes a second bevel gear disposed on the second axis; 3. The fluid machine according to claim 1 or 2, wherein each of the plurality of connecting elements comprises a third bevel gear that meshes with the first bevel gear, a fourth bevel gear that meshes with a corresponding one of the plurality of second bevel gears and pairs with the third bevel gear, and a connecting shaft that connects the paired third bevel gear and fourth bevel gear so as to rotate integrally with each other.

5. The reaction element includes a first gear disposed on the first axis, Each of the plurality of rotating elements includes a second gear disposed on the second axis; Each of the plurality of connecting elements includes a third gear that meshes with both a corresponding one of the plurality of second gears and the first gear, The fluid machine according to claim 1 or 2, wherein the first gear, the second gears, and the third gears are arranged in axially overlapping areas parallel to the first axis.

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