WO2024063071A1

WO2024063071A1 - Flow-path switching device

Info

Publication number: WO2024063071A1
Application number: PCT/JP2023/034017
Authority: WO
Inventors: 衛吉岡; 伸二河井
Original assignee: 愛三工業株式会社
Priority date: 2022-09-21
Filing date: 2023-09-20
Publication date: 2024-03-28

Abstract

Provided is a flow-path switching device in which, in a cross-section in the rotational axis direction, a communication path comprises an R-shaped section in which an inner wall is formed in an R-shape. A first-member port and a second-member port are disposed at different locations in the circumferential direction with the center thereof being the rotational axis, and when said ports are communicated using the communication path, the R-shaped section is formed at a location that faces an opening of the first-member port and an opening of the second-member port.

Description

Flow path switching device

The present disclosure relates to a flow path switching device that switches a flow path through which a fluid flows.

Patent Document 1 discloses a flow path switching valve that switches flow paths by rotating a main valve body having a plurality of communication paths and switching the combination of ports communicated by the communication paths.

JP2019-49364A

In the flow path switching valve disclosed in Patent Document 1, when the rotational position of the main valve body is set to the second rotational position, the shape of the communication passage that connects the two ports is U-shaped, and the fluid flows by bending at a substantially right angle, resulting in large pressure loss of the fluid. Furthermore, Patent Document 1 does not disclose any measures to reduce this pressure loss of the fluid.

Therefore, the present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a flow path switching device that can reduce fluid pressure loss.

One form of the present disclosure made to solve the above problems includes a first member, a rotating member that rotates around a rotating shaft, and a second member, and the direction of the rotating shaft is set in the direction of the rotating shaft. 1 member, the rotating member, and the second member are arranged in this order, the first member includes at least one port, the second member includes a plurality of ports, and the rotating member A communication path is provided for communicating a port of the member with a port of the second member, and the rotary member rotates to establish a combination of the port of the first member and the port of the second member that are communicated by the communication path. In the flow path switching device that switches a flow path through which fluid flows by switching, in a cross section in the direction of the rotation axis, the communicating path includes an R-shaped portion having an inner wall formed in an R-shape, and the R-shaped portion When the port of the first member and the port of the second member, which are arranged at different positions in the circumferential direction around the rotation axis, communicate with each other through the communication path, the port of the first member It is characterized in that it is formed at a position facing each of the opening and the opening of the port of the second member.

According to this aspect, when the port of the first member and the port of the second member, which are arranged at different positions in the circumferential direction around the rotation axis, communicate with each other through the communication path, the fluid flows into the R-shaped portion. It will flow easier along the way. Therefore, the fluid flows smoothly in the communication path, so that the pressure loss of the fluid can be reduced.

In the above aspect, it is preferable that one port of the second member is arranged at the same position in the circumferential direction relative to one port of the first member, and that the communication passage communicates the port of the first member with the port of the second member arranged at the same position in the circumferential direction relative to the port of the first member when the rotational position of the rotating member is at a first position, and communicates the port of the first member with the port of the second member arranged at a different position in the circumferential direction relative to the port of the first member when the rotational position of the rotating member is at a second position rotated a predetermined angle from the first position.

According to this aspect, when the rotating member is in the first position in the rotational direction, the fluid flows in a straight line, so the pressure loss of the fluid can be greatly reduced. Further, when the rotating member is at the second position in the rotational direction, the fluid flows obliquely from the port of the first member to the port of the second member, so that pressure loss of the fluid can be reduced.

Another form of the present disclosure made to solve the above problem includes a first member, a rotating member that rotates around a rotational axis, and a second member, and the direction of the rotational axis is set in the direction of the rotational axis. A first member, the rotating member, and the second member are arranged in this order, the first member includes at least one port, the second member includes a plurality of ports, and the rotating member A combination of a communication path that communicates a port of one member with a port of the second member, and a port of the first member and a port of the second member that communicate with each other through the communication path when the rotating member rotates. In a flow path switching device that switches a flow path through which a fluid flows, one port of the second member has the same number of ports in the circumferential direction centering on the rotation axis for one port of the first member. The communication path is arranged at a position in which the communication path is connected to the port of the first member and the circumference relative to the port of the first member when the rotational direction position of the rotary member is a first position. and a port of the second member disposed at the same position in the direction, and when the position of the rotational member in the rotational direction is a second position rotated by a predetermined angle from the first position, the It is characterized in that a port of the first member and a port of the second member disposed at a different position in the circumferential direction with respect to the port of the first member are communicated with each other.

According to this aspect, when the rotating member is in the first position in the rotational direction, the fluid flows in a straight line, so the pressure loss of the fluid can be greatly reduced. Further, when the rotating member is at the second position in the rotational direction, the fluid flows obliquely from the port of the first member to the port of the second member, so that the pressure loss of the fluid can be reduced.

Another form of the present disclosure made to solve the above problem includes a first member, a rotating member that rotates around a rotational axis, and a second member, and the direction of the rotational axis is set in the direction of the rotational axis. A first member, the rotating member, and the second member are arranged in this order, and each of the first member and the second member is provided with three or more ports, and the ports are connected to each other by rotating the rotating member. In a flow path switching device that switches a flow path by switching a combination of and a second member side communication path provided on the second member side and capable of communicating ports of adjacent second members, the first member side The communication path and the second member side communication path each include an R-shaped portion having an R-shaped inner wall, and the R-shaped portion of the first member side communication path connects to the port of the adjacent first member. When the first member side communication passages communicate with each other, the rounded portions of the second member side communication passages are formed at positions facing the openings of the ports of the first member, and the rounded portions of the second member side communication passages are When the ports of the two members are communicated with each other through the second member side communication path, the second member is formed at a position facing the opening of the port of the second member.

According to this aspect, when the ports of adjacent first members are communicated with each other through the first member side communication path and the ports of adjacent second members are communicated with each other through the second member side communication path, the fluid is It becomes easier to flow along the R-shaped portion. Therefore, the fluid flows smoothly in the first member-side communication path and the second member-side communication path, so that the pressure loss of the fluid can be reduced.

In the above aspect, it is preferable that the rotating member includes a through-communication passage that allows communication between the port of the first member and the port of the second member.

According to this aspect, by providing the through communication passage in addition to the first member side communication passage and the second member side communication passage, flow passages with various specifications can be formed.

In the above aspect, it is preferable that one port of the second member is arranged at the same position in a circumferential direction centering on the rotation axis with respect to one port of the first member.

According to this aspect, the through communication passage can be formed in a straight line. Therefore, the fluid flows more effectively and smoothly in the through-communicating passage, so that the pressure loss of the fluid can be reduced.

In the above aspect, all the ports of the first member and/or all the ports of the second member are arranged within a range of 180° in a circumferential direction around the rotation axis; is preferred.

According to this aspect, all the ports of the first member and/or the ports of all the second members are arranged in a concentrated manner in the circumferential direction. Therefore, it is possible to expand the location where the drive unit that drives the drive member can be placed without interfering with the port. Therefore, the degree of freedom in where the drive section is arranged is improved. Therefore, the drive unit can be arranged while suppressing the increase in size of the flow path switching device.

In the above aspect, it is preferable that the rotating member includes a plurality of through passages that can communicate the ports of the first member and the ports of the second member.

According to this aspect, it is possible to form more flow path patterns that communicate the ports of the first member and the ports of the second member, so flow paths with various specifications can be formed.

According to the flow path switching device of the present disclosure, fluid pressure loss can be reduced.

FIG. 2 is an external perspective view of the flow path switching device (in the case of a hexagonal valve) of the first embodiment. It is an exploded perspective view of the flow path switching device of a 1st embodiment (illustration of a drive part is omitted). It is a sectional view of the flow path switching device of a 1st embodiment (illustration of a drive part is omitted). FIG. 3 is a top view of the rotating disk. FIG. 3 is a top view of the fixed disk. It is a figure which shows typically the 1st flow path pattern in 1st Embodiment, and is a figure imaged when it sees from the upper part of a housing. It is a figure which shows typically the 2nd flow path pattern in 1st Embodiment, and is a figure imaged when it sees from the upper part of a housing. FIG. 5 is a diagram showing a first flow path pattern in the first embodiment, and is a cross section of the housing, rotating disk, and fixed disk in the axial direction (vertical direction in FIG. 3) (corresponding to the position shown by the dashed-dotted line in FIGS. 4 and 5). FIG. 3 is a plan view showing a circumferential direction of a rotating disk or a stationary disk (a cross section when viewed radially outward of the rotating disk or fixed disk at a position where the rotating disk or the stationary disk is located). 9 is a sectional view taken along line AA in FIG. 8. FIG. 9 is a sectional view taken along line BB in FIG. 8. FIG. 9 is a sectional view taken along line CC in FIG. 8. FIG. This is a cross-sectional view taken along the line D-D of FIG. 8. FIG. 7 is a diagram showing the second flow path pattern in the first embodiment, and is a diagram showing a circumferential cross section of the housing, the rotary disk, and the fixed disk in the axial direction expanded into a planar shape. It is a figure which shows the 1st flow-path pattern in 2nd Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. It is a figure which shows the 2nd flow path pattern in 2nd Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. It is a figure which shows the flow path pattern A in 3rd Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. FIG. 17 is a sectional view taken along line EE in FIG. 16; 17 is a sectional view taken along line FF in FIG. 16. FIG. 7 is a schematic diagram of switchable flow path patterns in the third embodiment. FIG. 13 is a diagram showing a flow path pattern B in the third embodiment, in which the axial cross section of the housing, the rotating disk, and the fixed disk is expanded in the circumferential direction onto a plane. 21 is a sectional view taken along line GG in FIG. 20. FIG. 21 is a sectional view taken along line HH in FIG. 20. FIG. FIG. 13 is a diagram showing a flow path pattern A in a fourth embodiment, in which the axial cross section of the housing, the rotating disk, and the fixed disk is expanded in the circumferential direction onto a plane. 24 is a sectional view taken along line II in FIG. 23. FIG. 24 is a sectional view taken along line JJ in FIG. 23. FIG. 13A to 13C are schematic diagrams of switchable flow path patterns in a fourth embodiment. It is a figure which shows the flow path pattern B in 4th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotary disk, and a stationary disk. 28 is a sectional view taken along line KK in FIG. 27. FIG. FIG. 27 is a sectional view taken along line LL in FIG. 27. It is a figure which shows the flow path pattern D in 5th Embodiment, and is the figure which expanded and showed the circumferential direction about the axial direction cross section of a housing, a rotary disk, and a stationary disk in plane form. 31 is a sectional view taken along line MM in FIG. 30. FIG. This is a cross-sectional view taken along line N-N of Figure 30. It is a schematic diagram of the flow path pattern which can be switched in 5th Embodiment. It is a figure which shows the flow path pattern A in 6th Embodiment, and is the figure which expanded and showed the circumferential direction about the axial direction cross section of a housing, a rotary disk, and a stationary disk in plan form. This is a cross-sectional view taken along line O-O of Figure 34. 35 is a sectional view taken along line PP in FIG. 34. FIG. It is a schematic diagram of the flow path pattern which can be switched in 6th Embodiment. It is a figure which shows the flow path pattern B in 6th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. 39 is a sectional view taken along the line QQ in FIG. 38. FIG. 39 is a sectional view taken along line RR in FIG. 38. FIG. It is a figure which shows the flow path pattern A in 7th Embodiment, and is the figure which expanded and showed the circumferential direction about the axial cross section of a housing, a rotary disk, and a stationary disk in a planar shape. 42 is a sectional view taken along line SS in FIG. 41. FIG. 42 is a cross-sectional view taken along the line TT in FIG. 41. FIG. It is a schematic diagram of the flow path pattern which can be switched in 7th Embodiment. FIG. 13 is a diagram showing a flow path pattern C in the seventh embodiment, in which the axial cross section of the housing, the rotating disk, and the fixed disk is expanded in the circumferential direction onto a plane. 46 is a sectional view taken along the line U-U in FIG. 45. FIG. 46 is a sectional view taken along line VV in FIG. 45. FIG. It is a figure which shows the flow path pattern B in 7th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. FIG. 48 is a sectional view taken along the line WW in FIG. 48. FIG. 48 is a sectional view taken along line XX in FIG. 48. FIG. 23 is a diagram showing a flow path pattern C in the eighth embodiment, in which the axial cross section of the housing, the rotating disk, and the fixed disk is expanded in the circumferential direction onto a plane. 52 is a sectional view taken along YY line in FIG. 51. FIG. 52 is a sectional view taken along the Z-Z line in FIG. 51. FIG. It is a schematic diagram of the flow path pattern which can be switched in 8th Embodiment. It is a figure which shows the flow path pattern D in 8th Embodiment, and is the figure which expanded and showed the circumferential direction about the axial cross section of a housing, a rotary disk, and a stationary disk in plane form. 56 is a sectional view taken along line AA in FIG. 55. FIG. 56 is a BB-BB cross-sectional view in FIG. 55. FIG. It is a figure which shows the flow path pattern B in 8th Embodiment, and is the figure which expanded and showed the circumferential direction about the axial direction cross section of a housing, a rotary disk, and a stationary disk in a planar shape. FIG. 59 is a sectional view taken along line CC-CC in FIG. 58; 59 is a cross-sectional view taken along the line DD-DD in FIG. 58. FIG. It is a figure which shows the flow path pattern A in 8th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. This is a cross-sectional view taken along the line EE-EE in Figure 61. 62 is a cross-sectional view taken along FF-FF in FIG. 61. FIG. It is a figure which shows the flow path pattern E in 8th Embodiment, and is the figure which expanded and showed the circumferential direction about the axial direction cross section of a housing, a rotating disk, and a stationary disk in planar form. 65 is a cross-sectional view taken along line GG-GG in FIG. 64. FIG. 65 is a sectional view taken along line HH in FIG. 64. FIG. It is a figure which shows the flow path pattern F in 8th Embodiment, and is the figure which expanded the circumferential direction in the plane shape about the axial cross section of a housing, a rotary disk, and a stationary disk. 68 is a sectional view taken along line II-II in FIG. 67. FIG. 68 is a sectional view taken along the line JJ-JJ in FIG. 67. In the ninth embodiment, it is a diagram showing the circumferential direction of the axial cross section of the housing, the rotating disk, and the fixed disk expanded into a planar shape. FIG. 10 is a plan view showing the circumferential direction of the axial cross section of the housing, rotating disk, and fixed disk in the tenth embodiment. FIG. 23 is a diagram showing an axial cross section of a housing, a rotating disk, and a fixed disk in an eleventh embodiment, the circumferential direction of which is developed into a planar shape. It is a figure which shows the 1st flow-path pattern in 12th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotary disk, and a stationary disk. It is a figure which shows the 1st flow path pattern in 12th Embodiment, and is a figure imaged when it sees from the upper part of a housing. It is a figure which shows the 2nd flow path pattern in 12th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. It is a figure which shows the 2nd flow path pattern in 12th Embodiment, and is a figure imaged when it sees from the upper part of a housing. It is a figure which shows the 3rd flow path pattern in 12th Embodiment, and is the figure which expanded the circumferential direction in the planar shape about the axial cross section of a housing, a rotating disk, and a stationary disk. FIG. 23 is a diagram showing a third flow path pattern in the twelfth embodiment, and is an image of the pattern as viewed from above the housing. FIG. 23 is a diagram showing a fourth flow path pattern in the twelfth embodiment, in which the axial cross section of the housing, the rotating disk, and the fixed disk is expanded into a planar shape in the circumferential direction. It is a figure which shows the 4th flow path pattern in 12th Embodiment, and is a figure imaged when it sees from the upper part of a housing. It is a figure which shows the 1st temperature control pattern of the fluid system using the flow-path switching device of 12th Embodiment. It is a figure which shows the 2nd temperature control pattern of the fluid system using the flow-path switching device of 12th Embodiment. It is a figure which shows the 3rd temperature control pattern of the fluid system using the flow-path switching device of 12th Embodiment. It is a figure which shows the 4th temperature control pattern of the fluid system using the flow-path switching device of 12th Embodiment.

This section describes a flow path switching device that is an embodiment of the present disclosure.

First Embodiment
First, the first embodiment will be described.

(Explanation of the overall outline of the flow path switching device)
First, the overall outline of the flow path switching device 1 of this embodiment will be explained.

As shown in FIGS. 1 to 3, the flow path switching device 1 includes a housing 11, a valve body portion 12, and a drive portion 13.

The housing 11 includes an inflow channel 20 through which fluid flows, and an outflow channel 30 through which fluid flows out. Here, the flow path switching device 1 is a hexagonal valve as an example, and the housing 11 includes three inlet flow paths 20 and three outflow flow paths 30. As the three inflow channels 20, a first inflow channel 21, a second inflow channel 22, and a third inflow channel 23 are provided. Further, as the three outflow channels 30, a first outflow channel 31, a second outflow channel 32, and a third outflow channel 33 are provided. Note that the housing 11 is made of resin, for example. Moreover, the housing 11 is an example of the "first member" of the present disclosure.

The housing 11 also has a plurality of inlet ports 20a as flow path openings (i.e., ports) on the valve body portion 12 side of the plurality of inflow flow paths 20, as shown in FIGS. 2, 3, and 8, which will be described later. We are prepared. Specifically, the housing 11 includes a first inlet port 21a as a channel port on the valve body portion 12 side of the first inflow channel 21, and a second inlet port 21a as a channel port on the valve body portion 12 side of the second inflow channel 22. A port 22a is provided, and a third inlet port 23a is provided as a flow path opening of the third inlet flow path 23 on the valve body portion 12 side.

The valve body portion 12 is provided inside the housing 11. As shown in FIGS. 2 and 3, the valve body portion 12 includes a plate-shaped rotating disk 40 that is rotationally driven and a plate-shaped fixed disk 50. The rotating disk 40 and the fixed disk 50 are stacked in the direction of the central axis L (hereinafter simply referred to as the "axial direction") of the disk portion 41 of the rotating disk 40 and the disk portion 51 of the fixed disk 50, which will be described later. It is arranged as follows. That is, the housing 11, the rotating disk 40, and the fixed disk 50 are arranged in this order from above in the axial direction. Note that the central axis L is an example of a "rotation axis" in the present disclosure.

Note that the rotating disk 40 and the fixed disk 50 are made of resin, for example. Further, the rotating disk 40 is an example of the "rotating member" of the present disclosure, and the fixed disk 50 is an example of the "second member" of the present disclosure.

As shown in FIGS. 2 to 4, the rotating disk 40 includes a disk portion 41 and a rotating shaft portion .

The disk portion 41 is formed into a disk shape and includes a rotating disk communication path 60 that penetrates in the axial direction. The rotating disk communication path 60 is a communication path that allows the inlet port 20a of the housing 11 to communicate with the outlet port 70a of the fixed disk 50, which will be described later. Here, the disk portion 41 includes three rotating disk communication paths 60. As shown in FIGS. 2 and 4, the three rotating disk communicating paths 60 include a first rotating disk communicating path 61, a second rotating disk communicating path 62, and a third rotating disk communicating path 63. Note that the rotating disk communication path 60 is an example of a "communication path" in the present disclosure.

The rotating shaft section 42 is connected to the disk section 41 at one end in the direction of its central axis, and connected to the drive section 13 at the other end. The rotating shaft portion 42 is provided at the center of the disk portion 41 so that its central axis coincides with the center axis L of the disk portion 41. When the rotating shaft section 42 obtains rotational power from the drive section 13 and rotates around the central axis, the disk section 41 connected to the rotating shaft section 42 rotates around the central axis L thereof. In this way, the rotating disk 40 rotates about the central axis L by receiving rotational power from the drive unit 13.

As shown in Figures 2, 3, and 5, the fixed disk 50 has a disk portion 51 and a cylindrical portion 52.

The disk portion 51 is formed into a disk shape and includes a fixed disk communication path 70 that penetrates in the axial direction. Here, the disc portion 51 includes three fixed disc communication paths 70. As shown in FIGS. 2 and 5, the three fixed disk communication paths 70 include a first fixed disk communication path 71, a second fixed disk communication path 72, and a third fixed disk communication path 73.

The cylindrical portion 52 is connected to the disk portion 51 and is formed to extend axially from the disk portion 51 so as to surround the fixed disk communication passage 70. Here, three cylindrical portions 52 are formed to correspond to the three fixed disk communication passages 70, respectively.

Furthermore, as shown in Figures 2, 3, and Figure 8 described later, the disk portion 51 of the fixed disk 50 has multiple outlet ports 70a as flow path openings on the valve body portion 12 side of the multiple fixed disk communication passages 70. In detail, the disk portion 51 has a first outlet port 71a as a flow path opening on the valve body portion 12 side of the first fixed disk communication passage 71, a second outlet port 72a as a flow path opening on the valve body portion 12 side of the second fixed disk communication passage 72, and a third outlet port 73a as a flow path opening on the valve body portion 12 side of the third fixed disk communication passage 73.

The drive section 13 includes a motor (not shown) for providing rotational power to the rotating shaft section 42 of the rotating disk 40.

The flow path switching device 1 configured as described above forms a flow path through which fluid flows by combining the inflow flow path 20, the rotating disk communication path 60, and the fixed disk communication path 70 (outflow flow path 30). The flow path switching device 1 is configured by rotating the rotary disk 40 by the drive unit 13 and switching the combination of the inlet port 20a of the housing 11 and the outlet port 70a of the fixed disk 50 which are communicated through the rotary disk communication path 60. , switch the flow path through which the fluid flows.

For example, when the rotational direction of the rotating disk 40 is at the first position, as shown in FIGS. 21a and the first outlet port 71a to connect the first inflow passage 21 and the first fixed disk communication passage 71 (specifically, the first outflow passage 31 via the first fixed disk communication passage 71). communicate. Further, the second inlet port 22a and the second outlet port 72a are communicated by the second rotating disk communication path 62, and the second inlet flow path 22 and the second fixed disk communication path 72 (more specifically, the second fixed disk communication path 72 is connected to the second inlet port 22a and the second outlet port 72a). It communicates with the second outflow channel 32) via the passage 72. Further, the third rotating disk communication path 63 communicates the third inlet port 23a and the third outlet port 73a, so that the third inlet flow path 23 and the third fixed disk communication path 73 (more specifically, the third fixed disk communication path 73 It communicates with the third outflow channel 33) via the passage 73. Note that in FIG. 8 (and FIGS. 13, 14, and 15 described later), the sealing member 81 is omitted for convenience of explanation.

This creates a flow path that communicates the first inflow path 21 with the first outflow path 31 (which communicates with the first fixed disk communication path 71), and a flow path that communicates with the second inflow path 22 (which communicates with the second fixed disk communication path 71). A flow path that communicates with the second outflow flow path 32 (which communicates with the communication path 72) and a flow path that communicates with the third inflow flow path 23 and the third outflow flow path 33 (which communicates with the third fixed disk communication path 73). A flow path can be formed.

Furthermore, the state of the first flow path pattern shown in FIG. 6 can be switched to the second flow path pattern shown in FIG. 7 by rotationally driving the rotary disk 40 by the drive unit 13.

That is, when the position of the rotating disk 40 in the rotational direction is a second position rotated by a predetermined angle from the first position, as shown in FIGS. 7 and 13, the first flow path pattern is The first inlet port 21a and the second outlet port 72a are communicated with each other through the rotating disk communication path 61, and the first inlet flow path 21 and the second fixed disk communication path 72 (more specifically, via the second fixed disk communication path 72) are connected. and the second outflow channel 32). Further, the second inlet port 22a and the third outlet port 73a are communicated by the second rotating disk communication path 62, and the second inlet flow path 22 and the third fixed disk communication path 73 (specifically, the third fixed disk communication path 73) are connected to each other. It communicates with the third outflow channel 33) via the passage 73. Further, the third inlet port 23a and the first outlet port 71a are communicated with each other by the third rotating disk communication path 63, and the third inlet flow path 23 and the first fixed disk communication path 71 (specifically, the first fixed disk communication path 71) are connected to each other. It can be communicated with the first outflow channel 31) via the passage 71.

This makes it possible to form a flow path that connects the first inflow flow path 21 to the second outflow flow path 32 (connected to the second fixed disk communication path 72), a flow path that connects the second inflow flow path 22 to the third outflow flow path 33 (connected to the third fixed disk communication path 73), and a flow path that connects the third inflow flow path 23 to the first outflow flow path 31 (connected to the first fixed disk communication path 71).

Note that the flow path switching device 1 is not limited to a six-way valve, but can also be other multi-way valves such as a three-way valve or a four-way valve. Therefore, the housing 11 only needs to have at least one inlet port 20a (that is, the inflow passage 20), and the fixed disk 50 has a plurality of outlet ports 70a (that is, the housing 11 has a plurality of outflow passages 30). That's fine. Furthermore, the rotating disk 40 only needs to have at least one rotating disk communication path 60, and the fixed disk 50 only needs to have a plurality of fixed disk communication paths 70.

In addition, in the present embodiment, in the axial direction, there is elasticity between the housing 11 and the rotating disk 40, between the rotating disk 40 and the fixed disk 50, and between the fixed disk 50 and the housing 11. A member is provided.

Specifically, as shown in FIG. 3, an elastic member is provided between the housing 11 and the disk portion 41 of the rotating disk 40 and between the disk portion 41 of the rotating disk 40 and the fixed disk 50. A seal member 81 is provided.

As shown in FIGS. 2 and 4, this sealing member 81 is formed in a circumferential shape in the disc portion 41 of the rotating disk 40 so as to surround the periphery of the rotating disk communication passage 60 formed in the shape of a long hole. There is. The sealing member 81 seals the flow path and prevents fluid from leaking from the rotating disk communication path 60 forming a part of the flow path.

Note that the sealing member 81 is formed of, for example, a fluororesin (eg, Teflon (registered trademark)), rubber to which a fluororesin is attached, or a material other than fluororesin or rubber.

Furthermore, a disk holding spring 82 is provided as an elastic member between the disk portion 51 of the fixed disk 50 and the housing 11. A total of three disc retaining springs 82 are provided, each being disposed on each of the three cylindrical portions 52 of the fixed disc 50.

Furthermore, a lip seal 83 is provided between the cylindrical portion 52 of the fixed disk 50 and the housing 11 to ensure the sealing performance of the fixed disk communication path 70.

In this way, by providing an elastic member between the housing 11, the rotating disk 40, and the fixed disk 50 in the axial direction, the rotating disk 40 and the fixed disk 50 are supported by the elastic member.

(Regarding measures to reduce fluid pressure loss)
In this embodiment, the inlet port 20a of the housing 11 and the outlet port 70a of the fixed disk 50 are arranged in a circumferential direction centered on the central axis L (circumferential direction shown by a dashed line in FIGS. 4 and 5, and as follows) , simply referred to as the "circumferential direction"). That is, the inlet port 20a and the outlet port 70a are arranged coaxially in the axial direction, and one outlet port 70a is arranged at the same position in the circumferential direction for one inlet port 20a.

Specifically, as shown in FIG. 8, the first inlet port 21a and the first outlet port 71a, the second inlet port 22a and the second outlet port 72a, and the third inlet port 23a and the third outlet port 73a are provided at the same position in the circumferential direction.

As shown in FIG. 8, the rotating disk communication passage 60 has an inlet port 20a and an outlet port 70a disposed at the same position in the circumferential direction with respect to the inlet port 20a in the first flow path pattern. It communicates with.

That is, in the first flow path pattern, the first rotating disk communication path 61 includes the first inlet port 21a and the first outlet port disposed at the same position in the circumferential direction with respect to the first inlet port 21a. 71a. Further, the second rotating disk communication path 62 communicates the second inlet port 22a with a second outlet port 72a disposed at the same position in the circumferential direction with respect to the second inlet port 22a. Further, the third rotating disk communication path 63 communicates the third inlet port 23a with a third outlet port 73a disposed at the same position in the circumferential direction with respect to the third inlet port 23a.

Accordingly, in the case of the first flow path pattern, the flow path is configured in a straight shape, and the pressure loss of the fluid can be greatly reduced. That is, as shown by the arrow in FIG. 8, the fluid flows linearly from the inlet port 20a to the outlet port 70a via the rotary disk communication path 60, so that the pressure loss of the fluid can be greatly reduced.

Further, as shown in FIG. 13, in the second flow path pattern, the rotating disk communication passage 60 includes an inlet port 20a and an outlet port 70a disposed at a position different from the circumferential direction with respect to the inlet port 20a. It communicates with.

That is, in the second flow path pattern, the first rotating disk communication path 61 has a first inlet port 21a and a second outlet port disposed at a different position in the circumferential direction with respect to the first inlet port 21a. 72a. Further, the second rotating disk communication path 62 communicates the second inlet port 22a with a third outlet port 73a disposed at a different position in the circumferential direction with respect to the second inlet port 22a. Further, the third rotating disk communication path 63 communicates the third inlet port 23a with a first outlet port 71a that is disposed at a different position in the circumferential direction with respect to the third inlet port 23a.

As a result, when the second flow path pattern is used, the flow path is configured at an angle, which reduces the pressure loss of the fluid. That is, as shown by the arrow in FIG. 13, the fluid flows at an angle from the inlet port 20a through the rotating disk connecting passage 60 toward the outlet port 70a, thereby reducing the pressure loss of the fluid.

Here, in this embodiment, as shown in FIGS. 8 to 13, the rotating disk communication path 60 is configured with two stages, including an upper communication path 60a and a lower communication path 60b. has been done. In the axial cross section, the rotary disk communication passage 60 includes an inlet side R-shaped part 91 and an outlet side R-shaped part 101, each of which has an R-shaped inner wall.

As shown in FIG. 13, the inlet side R-shaped portion 91 is formed at a position facing the opening 20b of the inlet port 20a in the second flow path pattern. That is, the inlet side R-shaped portion 91 is formed at a position facing each of the opening 21b of the first inlet port 21a, the opening 22b of the second inlet port 22a, and the opening 23b of the third inlet port 23a. ing.

As shown in FIG. 13, the outlet side R-shaped portion 101 is formed at a position facing the opening 70b of the outlet port 70a in the second flow path pattern. That is, the outlet side R-shaped portion 101 is formed at a position facing each of the opening 71b of the first outlet port 71a, the opening 72b of the second outlet port 72a, and the opening 73b of the third outlet port 73a. ing.

In this manner, in this embodiment, the rotating disk communication path 60 includes the inlet side R-shaped portion 91 and the outlet side R-shaped portion 101. As a result, in the second flow path pattern, the fluid flowing into the rotating disk communication path 60 from the inlet port 20a and the fluid flowing out from the rotating disk communication path 60 to the outlet port 70a are transferred to the inlet side R-shaped portion. 91 and the R-shape of the outlet-side R-shape portion 101 . Therefore, the fluid flows smoothly in the rotating disk communication path 60, so that the pressure loss of the fluid can be reduced.

The rotating disk communication passage 60 has an R-shaped portion 110 whose inner wall is formed in an R-shape. The inlet side R-shaped portion 91 and the outlet side R-shaped portion 101 can be formed by a molding die that forms the upper stage communication passage 60a and a molding die that forms the lower stage communication passage 60b. Each molding die can be demolded from above and below.

<Second embodiment>
Next, a second embodiment will be described, but the points that are different from the first embodiment will be explained, and the explanation of the points that are common to the first embodiment will be omitted.

In this embodiment, as shown in FIGS. 14 and 15, the inlet port 20a and the outlet port 70a are provided at different positions in the circumferential direction. That is, the inlet port 20a and the outlet port 70a are not arranged coaxially in the axial direction. Note that FIGS. 14 and 15 only illustrate the first inlet port 21a of the three inlet ports 20a, and only the first outlet port 71a and the second outlet port 72a of the three outlet ports 70a. .

For example, as shown in FIG. 14, as a first flow path pattern, the first inlet port 21a and the first outlet port 71a are connected by the first rotating disk connection path 61, and the first inflow flow path 21 and the first fixed disk connection path 71 (more specifically, the first outflow flow path 31 via the first fixed disk connection path 71). Also, although not shown in FIG. 14, the second inlet port 22a and the second outlet port 72a are connected by the second rotating disk connection path 62, and the second inflow flow path 22 and the second fixed disk connection path 72 (more specifically, the second outflow flow path 32 via the second fixed disk connection path 72). Also, the third inlet port 23a and the third outlet port 73a are connected by the third rotating disk connection path 63, and the third inflow flow path 23 and the third fixed disk connection path 73 (more specifically, the third outflow flow path 33 via the third fixed disk connection path 73).

Further, as shown in FIG. 15, as a second flow path pattern, the first inlet port 21a and the second outlet port 72a are communicated with each other by the first rotating disk communication path 61, and the first inlet port 21 and the second outlet port 72a are connected to each other. The two fixed disk communication passages 72 (more specifically, the second outflow passage 32 via the second fixed disk communication passages 72) are communicated with each other. Although not shown in FIG. 15, the second inlet port 22a and the third outlet port 73a are communicated with each other by the second rotating disk communication path 62, so that the second inlet flow path 22 and the third fixed disk communication path 73 ( Specifically, it is communicated with the third outflow flow path 33) via the third fixed disk communication path 73. Further, the third inlet port 23a and the first outlet port 71a are communicated with each other by the third rotating disk communication path 63, and the third inlet flow path 23 and the first fixed disk communication path 71 (specifically, the first fixed disk communication path 71) are connected to each other. It communicates with the first outflow channel 31) via the passage 71.

Also in this embodiment, as shown in FIGS. 14 and 15, the rotating disk communication path 60 is constituted by two stages of communication paths, including an upper communication path 60a and a lower communication path 60b. ing. The rotary disk communication path 60 includes an inlet side R-shaped portion 92 and an outlet side R-shaped portion 102, each of which has an R-shaped inner wall.

As shown in FIGS. 14 and 15, the inlet side R-shaped portion 92 is formed at a position facing the opening 20b of the inlet port 20a in the first flow path pattern and the second flow path pattern. There is. That is, the inlet side R-shaped portion 92 is formed at a position facing each of the opening 21b of the first inlet port 21a, the opening 22b of the second inlet port 22a, and the opening 23b of the third inlet port 23a. ing.

As shown in FIGS. 14 and 15, the outlet side R-shaped portion 102 is formed at a position facing the opening 70b of the outlet port 70a in the first flow path pattern and the second flow path pattern. There is. That is, the outlet side R-shaped portion 102 is formed at a position facing each of the opening 71b of the first outlet port 71a, the opening 72b of the second outlet port 72a, and the opening 73b of the third outlet port 73a. ing.

In this way, since the rotating disk communication path 60 includes the inlet side R-shaped part 92 and the outlet side R-shaped part 102, both in the first flow path pattern and in the second flow path pattern, The fluid flowing into the rotating disk communication path 60 from the inlet port 20a and the fluid flowing out from the rotating disk communication path 60 to the outlet port 70a flow along the R shapes of the inlet side R-shaped portion 92 and the outlet side R-shaped portion 102. It becomes easier. Therefore, the fluid flows smoothly in the rotating disk communication path 60, so that the pressure loss of the fluid can be reduced.

<Third embodiment>
In this embodiment, as shown in FIG. 16 in the left-right direction). Note that FIG. 16 shows an example in which the housing 11 is provided with three inlet ports 20a, and the fixed disk 50 is provided with three outlet ports 70a.

Further, as shown in FIG. 16 in a cross section in the direction of the central axis L of the flow path switching device 1, the rotating disk 40 includes a housing side communication path 111 and a fixed disk side communication path 112. The housing-side communication path 111 is a communication path that is provided on the housing 11 side and allows the inlet ports 20a of adjacent housings 11 to communicate with each other. The fixed disk side communication path 112 is a communication path that is provided on the fixed disk 50 side and allows the outlet ports 70a of adjacent fixed disks 50 to communicate with each other.

Note that the housing side communication path 111 is an example of the "first member side communication path" of the present disclosure. Further, the fixed disk side communication path 112 is an example of the "second member side communication path" of the present disclosure.

Further, the housing side communication path 111 is formed along the circumferential direction of the rotating disk 40, as shown in FIG. Furthermore, the fixed disk side communication path 112 is formed along the circumferential direction of the rotating disk 40, as shown in FIG.

As shown in FIG. 16, the housing-side communication passage 111 includes an R-shaped portion 121 whose inner wall is formed in an R-shape. Further, the fixed disk side communication path 112 includes an R-shaped portion 122 having an inner wall formed in an R-shape. The R-shaped portion 121 of the housing-side communication path 111 is formed at a position facing the opening 20b of the inlet port 20a when the adjacent inlet ports 20a are communicated with each other through the housing-side communication path 111. Further, the R-shaped portion 122 of the fixed disk side communication path 112 is formed at a position opposite to the opening 70b of the outlet port 70a when the adjacent outlet ports 70a are communicated with each other through the fixed disk side communication path 112. .

In this way, the housing-side communication path 111 and the fixed disk-side communication path 112 are formed into flow paths that allow the fluid to make a U-turn so that it is easy to flow. curved shape). Therefore, when the inlet ports 20a of adjacent housings 11 are communicated with each other through the housing side communication passage 111, and the outlet ports 70a of adjacent fixed disks 50 are communicated with each other through the fixed disk side communication passage 112, the fluid has an R shape. It becomes easier to flow along the portion 121 and the rounded portion 122. Therefore, the fluid flows smoothly in the housing-side communication path 111 and the fixed disk-side communication path 112, so that the pressure loss of the fluid can be reduced.

Further, as shown in FIG. 16, the rotating disk 40 includes an upper and lower straight communication path 131 that allows communication between the inlet port 20a and the outlet port 70a. Note that the vertical straight communication path 131 is an example of a "through communication path" in the present disclosure.

In this way, by providing the vertical straight communication path 131 in addition to the housing side communication path 111 and the fixed disk side communication path 112, flow paths with various specifications can be formed.

The vertical straight communication path 131 is formed in a straight line in the direction of the central axis L of the rotating disk 40 (vertical direction in FIG. 16). Therefore, the fluid flows more effectively and smoothly in the vertical straight communication path 131, so that the pressure loss of the fluid can be reduced.

Note that the surroundings of the housing-side communication path 111, the fixed-disk side communication path 112, and the vertical straight communication path 131 on the rotating disk 40 (specifically, the surface of the disk portion 41 on the housing 11 side and the surface on the fixed disk 50 side) A seal member 81 is formed in a circumferential shape so as to surround the. Therefore, the housing side communication path 111, the fixed disk side communication path 112, and the vertical straight communication path 131 are sealed with each other by the seal member 81 and do not communicate with each other. Note that in FIG. 16 and the like, the sealing member 81 is omitted for convenience of explanation.

In this embodiment, by rotating the rotary disk 40, it is possible to switch between two flow path patterns, that is, flow path pattern A and flow path pattern B, as shown in FIG. Note that the direction indicated by the arrow in FIGS. 16, 19, etc. indicates an example of the flow direction of the fluid.

In the flow path pattern A, as shown in FIGS. 16 to 19, the first inlet port 21a and the third inlet port 23a are communicated with each other by the housing side communication path 111. Furthermore, the first outlet port 71a and the third outlet port 73a are communicated with each other by the fixed disk side communication passage 112. Further, the second inlet port 22a and the second outlet port 72a are communicated with each other by the vertical straight communication passage 131.

In flow path pattern B, as shown in FIGS. 19 to 22, the housing side communication path 111 allows the second inlet port 22a and the third inlet port 23a to communicate with each other. Further, the fixed disk side communication passage 112 allows the second outlet port 72a and the third outlet port 73a to communicate with each other. Further, the first inlet port 21a and the first outlet port 71a are communicated with each other by the vertical straight communication passage 131.

<Fourth embodiment>
In this embodiment, as shown in FIGS. 23 to 25, all the inlet ports 20a and all the outlet ports 70a are arranged within a range of 180° in the circumferential direction (left-right direction in FIG. 23).

In this way, in this embodiment, all the inlet ports 20a and all the outlet ports 70a are arranged in a concentrated manner in the circumferential direction. Therefore, the location where the drive unit 13 can be placed without interfering with the port can be expanded. For example, the drive unit 13 can be arranged within the area α as shown in FIG. Therefore, the degree of freedom in where the drive unit 13 is arranged is improved. Therefore, the drive unit 13 can be arranged while suppressing the increase in size of the flow path switching device 1.

The rotating disk 40 also has two housing side communication passages 111. These two housing side communication passages 111 are a first housing side communication passage 111-1 and a second housing side communication passage 111-2.

Furthermore, the rotating disk 40 includes two fixed disk side communication passages 112. These two fixed disk side communication paths 112 are a first fixed disk side communication path 112-1 and a second fixed disk side communication path 112-2.

In this embodiment, as shown in FIG. 26, it is possible to switch between two flow path patterns, that is, flow path pattern A and flow path pattern B.

In flow path pattern A, as shown in FIGS. 23 to 26, the first inlet port 21a and the third inlet port 23a are communicated with each other by the first housing side communication path 111-1. Further, the first fixed disk side communication passage 112-1 allows the first outlet port 71a and the third outlet port 73a to communicate with each other. Further, the second inlet port 22a and the second outlet port 72a are communicated with each other by the vertical straight communication passage 131.

In flow path pattern B, as shown in FIGS. 26 to 29, the second inlet port 22a and the third inlet port 23a are communicated through the second housing side communication path 111-2. Further, the second fixed disk side communication passage 112-2 allows the second outlet port 72a and the third outlet port 73a to communicate with each other. Further, the first inlet port 21a and the first outlet port 71a are communicated with each other by the vertical straight communication passage 131.

In addition, as a modified example, all the inlet ports 20a or all the outlet ports 70a, that is, only one of all the inlet ports 20a and all the outlet ports 70a is arranged within a range of 180° in the circumferential direction. may have been done.

<Fifth embodiment>
This embodiment differs from the fourth embodiment in that by rotating the rotary disk 40, three flow path patterns, that is, flow path pattern A and flow path pattern B, are created by rotating the rotating disk 40. , it is possible to switch to flow path pattern D.

In flow path pattern D, as shown in FIGS. 30 to 33, the third inlet port 23a and the third outlet port 73a are communicated with each other by the vertical straight communication path 131. Note that the other ports are not connected to any port.

<Sixth embodiment>
In this embodiment, as shown in FIG. 34, the rotating disk 40 includes a rotating disk communication path 60 that allows communication between the inlet port 20a and the outlet port 70a, similar to the first embodiment.

Similarly to the first embodiment, the rotating disk communication path 60 includes an inlet side R-shaped portion 91 and an outlet side R-shaped portion 101.

Furthermore, as shown in FIGS. 34 to 36, the housing side communication path 111 and the fixed disk side communication path 112 are arranged with their positions shifted in the circumferential direction (left and right direction in FIG. 34).

In this embodiment, as shown in FIG. 37, it is possible to switch between two flow path patterns, that is, flow path pattern A and flow path pattern B.

In the flow path pattern A, as shown in FIGS. 34 to 37, the first inlet port 21a and the second outlet port 72a are communicated with each other by the rotating disk communication path 60. Furthermore, the housing-side communication passage 111 allows the second inlet port 22a and the third inlet port 23a to communicate with each other. Furthermore, the first outlet port 71a and the third outlet port 73a are communicated with each other by the fixed disk side communication passage 112.

In the flow path pattern B, as shown in FIGS. 37 to 40, the third inlet port 23a and the first outlet port 71a are communicated with each other by the rotating disk communication path 60. Further, the housing-side communication passage 111 allows the first inlet port 21a and the second inlet port 22a to communicate with each other. Further, the fixed disk side communication passage 112 allows the second outlet port 72a and the third outlet port 73a to communicate with each other.

<Seventh embodiment>
In this embodiment, as shown in FIGS. 41 to 43, the rotating disk 40 is provided with three vertical straight communication passages 131. These three vertical straight communication passages 131 are a first vertical straight communication passage 131-1, a second vertical straight communication passage 131-2, and a third vertical straight communication passage 131-3.

In this embodiment, by rotating the rotating disk 40, it is possible to switch between three flow path patterns, namely, flow path pattern A, flow path pattern C, and flow path pattern B, as shown in FIG. 44.

In flow path pattern A, as shown in FIGS. 41 to 44, the first inlet port 21a and the third inlet port 23a are communicated with each other by the housing side communication path 111. Furthermore, the first outlet port 71a and the third outlet port 73a are communicated with each other by the fixed disk side communication passage 112. Further, the second vertical straight communication passage 131-2 communicates the second inlet port 22a with the second outlet port 72a.

In flow path pattern C, as shown in FIGS. 44 to 47, the first inlet port 21a and the first outlet port 71a are communicated with each other by the first vertical straight communication path 131-1. Further, the second inlet port 22a and the second outlet port 72a are communicated with each other by the third vertical straight communication path 131-3. Note that the third inlet port 23a and the third outlet port 73a do not communicate with any port.

In the flow path pattern B, as shown in FIG. 44 and FIGS. 48 to 50, the second inlet port 22a and the third inlet port 23a are communicated with each other by the housing side communication path 111. Further, the fixed disk side communication passage 112 allows the second outlet port 72a and the third outlet port 73a to communicate with each other. Further, the first inlet port 21a and the first outlet port 71a are communicated with each other by the second vertical straight communication path 131-2.

<Eighth embodiment>
In this embodiment, as shown in FIGS. 51 to 53, ports are consolidated and a new vertical straight communication path 131 is formed in the empty space. In this way, the rotating disk 40 is provided with a plurality of upper and lower straight communication passages 131. As a result, it is possible to form more flow path patterns that communicate the inlet port 20a and the outlet port 70a, and therefore flow paths with various specifications can be formed.

Specifically, as shown in FIGS. 51 to 53, the rotating disk 40 is provided with four vertical straight communication passages 131. These four vertical straight communication passages 131 include a first vertical straight communication passage 131-1, a second vertical straight communication passage 131-2, a third vertical straight communication passage 131-3, and a fourth vertical straight communication passage 131. -4.

Then, by rotating the rotating disk 40, it is possible to switch between six flow path patterns, namely, flow path pattern A to flow path pattern F, as shown in FIG. 54.

In flow path pattern C, as shown in FIGS. 51 to 54, the first inlet port 21a and the first outlet port 71a are communicated with each other by the third vertical straight communication path 131-3. Further, the second inlet port 22a and the second outlet port 72a are communicated with each other by a fourth vertical straight communication path 131-4. Note that the third inlet port 23a and the third outlet port 73a do not communicate with any port.

In flow path pattern D, as shown in FIGS. 54 to 57, the third inlet port 23a and the third outlet port 73a are communicated with each other by the fourth vertical straight communication path 131-4. Note that the other ports are not connected to any port.

In flow path pattern B, as shown in FIG. 54 and FIGS. 58 to 60, the second inlet port 22a and the third inlet port 23a are communicated through the housing side communication path 111. Further, the fixed disk side communication passage 112 allows the second outlet port 72a and the third outlet port 73a to communicate with each other. Further, the first inlet port 21a and the first outlet port 71a are communicated with each other by a fourth vertical straight communication path 131-4.

In flow path pattern A, as shown in FIG. 54 and FIGS. 61 to 63, the first inlet port 21a and the third inlet port 23a are communicated with each other by the housing side communication path 111. Furthermore, the first outlet port 71a and the third outlet port 73a are communicated with each other by the fixed disk side communication passage 112. Further, the second inlet port 22a and the second outlet port 72a are communicated with each other by the first vertical straight communication path 131-1.

In the flow path pattern E, as shown in FIG. 54 and FIGS. 64 to 66, the third inlet port 23a and the third outlet port 73a are communicated with each other by the first vertical straight communication path 131-1. Further, the second vertical straight communication passage 131-2 communicates the second inlet port 22a with the second outlet port 72a. Note that the first inlet port 21a and the first outlet port 71a do not communicate with any port.

In the flow path pattern F, as shown in FIG. 54 and FIGS. 67 to 69, the first inlet port 21a and the first outlet port 71a are communicated with each other by the first vertical straight communication path 131-1. Further, the third inlet port 23a and the third outlet port 73a are communicated with each other by the second vertical straight communication path 131-2. Further, the second inlet port 22a and the second outlet port 72a are communicated with each other by the third vertical straight communication path 131-3.

<Ninth embodiment>
In this embodiment, as shown in FIG. 70, the housing side communication passage 111 has a large round shape (curved shape) formed on its outer periphery (that is, the inner wall on the fixed disk 50 side) as a whole. 141. Furthermore, the fixed disk side communication passage 112 includes a large R-shaped portion 142 formed in a large R shape (curved shape) as a whole on its outer periphery (that is, the inner wall on the housing 11 side). This allows the fluid to make a gentle U-turn and flow easily in the housing-side communication path 111 and the fixed disk-side communication path 112, so that the pressure loss of the fluid can be reduced.

<Tenth embodiment>
In this embodiment, in contrast to the specifications of the ninth embodiment, as shown in FIG. A flow path adapter 151 is provided as a lid that covers the disk 50 side. The outer periphery of the flow path adapter 151 is formed into a large round shape (curved shape). This makes it difficult for fluid flow to stagnate in the housing-side communication path 111 and the fixed disk-side communication path 112, thereby reducing fluid pressure loss.

<Eleventh embodiment>
In this embodiment, in contrast to the specifications of the third embodiment, as shown in FIG. A flow path adapter 151 is provided as a lid that covers the disk 50 side. The corner portion of the flow path adapter 151 is formed into a small rounded shape (curved shape). This makes it difficult for fluid flow to stagnate in the housing-side communication path 111 and the fixed disk-side communication path 112, thereby reducing fluid pressure loss.

<Twelfth embodiment>
The flow path switching device 1 of this embodiment is an eight-way valve, and the housing 11 includes four inflow paths 20 and four outflow paths 30. The four inflow channels 20 are a first inflow channel 21 , a second inflow channel 22 , a third inflow channel 23 , and a fourth inflow channel 24 . The four outflow channels 30 are a first outflow channel 31 , a second outflow channel 32 , a third outflow channel 33 , and a fourth outflow channel 34 .

As shown in FIG. 73, the housing 11 has four inlet ports 20a, a first inlet port 21a, a second inlet port 22a, and a third inlet port 23a, as well as a valve body of a fourth inflow channel 24. A fourth inlet port 24a, which is a flow path opening on the side of the section 12 (that is, the rotating disk 40), is provided.

The rotating disk 40 (specifically, the disk portion 41) includes four rotating disk communication paths 160. The four rotating disk communicating paths 160 are a first rotating disk communicating path 161 , a second rotating disk communicating path 162 , a third rotating disk communicating path 163 , and a fourth rotating disk communicating path 164 . Note that the rotating disk communication path 160 is a communication path that allows the inlet port 20a of the housing 11 and the outlet port 70a of the fixed disk 50 to communicate with each other.

Furthermore, the fixed disk 50 (specifically, the disk portion 51) includes four fixed disk communication paths 70. The four fixed disk communication paths 70 are a first fixed disk communication path 71 , a second fixed disk communication path 72 , a third fixed disk communication path 73 , and a fourth fixed disk communication path 74 .

As shown in FIG. 73, the fixed disk 50 has four outlet ports 70a, including the first outlet port 71a, the second outlet port 72a, and the third outlet port 73a, as well as a fourth outlet port 74a, which is a flow path opening on the valve body portion 12 (i.e., the rotating disk 40) side of the fourth fixed disk communication passage 74. The first outlet port 71a, the second outlet port 72a, the third outlet port 73a, and the fourth outlet port 74a are respectively connected to the first outlet flow path 31, the second outlet flow path 32, the third outlet flow path 33, and the fourth outlet flow path 34 provided in the housing 11.

Note that a sealing member 81 is formed in a circumferential shape on the rotating disk 40 (specifically, the surface of the disk portion 41 on the housing 11 side and the surface on the fixed disk 50 side) so as to surround the periphery of the rotating disk communication path 160. There is. Therefore, the four rotating disk communication paths 160 are sealed with each other by the seal member 81 and do not communicate with each other. Note that in FIG. 73 and the like, the sealing member 81 is omitted for convenience of explanation.

In the flow path switching device 1 of this embodiment, as shown in FIGS. 73 and 74, as the first flow path pattern, the first rotary disk communication path 161 connects the first inlet port 21a and the fourth outlet. It communicates with the port 74a. Further, the second rotating disk communication path 162 allows the second inlet port 22a and the second outlet port 72a to communicate with each other. Further, the third rotating disk communication path 163 allows the third inlet port 23a and the third outlet port 73a to communicate with each other. Further, the fourth rotary disk communication path 164 allows the fourth inlet port 24a and the first outlet port 71a to communicate with each other.

Note that in FIG. 73 and FIGS. 75, 77, and 79, which will be described later, communication paths that communicate in the axial direction are shown by solid lines, and other communication paths that pass through the interior of the rotating disk 40 (for example, communication paths that communicate in the radial direction) are shown by solid lines. Among the passages), only the communication passages that actually communicate with each passage pattern are shown by broken lines.

As shown in FIGS. 75 and 76, as a second flow path pattern, the fourth inlet port 24a and the fourth outlet port 74a are communicated by the first rotating disk communication path 161. Further, the second rotating disk communication path 162 allows the second inlet port 22a and the second outlet port 72a to communicate with each other. Further, the third rotating disk communication path 163 allows the third inlet port 23a and the third outlet port 73a to communicate with each other. Further, the first inlet port 21a and the first outlet port 71a are communicated with each other by the fourth rotating disk communication path 164.

As shown in FIGS. 77 and 78, as a third flow path pattern, the third inlet port 23a and the second outlet port 72a are communicated by the first rotating disk communication path 161. Further, the second rotary disk communication path 162 allows the first inlet port 21a and the first outlet port 71a to communicate with each other. Further, the fourth inlet port 24a and the fourth outlet port 74a are communicated with each other by the third rotating disk communication path 163. Further, the second inlet port 22a and the third outlet port 73a are communicated with each other by the fourth rotating disk communication path 164.

As shown in FIGS. 79 and 80, as a fourth flow path pattern, the second rotating disk communication path 162 communicates the second inlet port 22a and the second outlet port 72a. Further, the third rotating disk communication path 163 allows the third inlet port 23a and the fourth outlet port 74a to communicate with each other. Further, the first inlet port 21a and the first outlet port 71a are communicated with each other by the fourth rotating disk communication path 164. Note that the fourth inlet port 24a and the third outlet port 73a do not communicate with any port.

Note that, as shown in FIG. 73 and the like, the rotating disk communication path 160 includes an R-shaped portion 171. This allows the fluid to easily flow along the R-shaped portion 171, similar to the inlet-side R-shaped portion 91 and the outlet-side R-shaped portion 101 of the first embodiment. Therefore, the fluid flows smoothly in the rotating disk communication path 160, so that the pressure loss of the fluid can be reduced.

As shown in FIGS. 81 to 84, the fluid system 201 using such a flow path switching device 1 is, for example, a system mounted on a vehicle, which adjusts the temperature of the battery 221 and the PCU 223. can be constructed. This fluid system 201 can be switched to four temperature control patterns, as shown in FIGS. 81 to 84.

In addition to the flow path switching device 1, the fluid system 201 includes a first flow path 211, a second flow path 212, a third flow path 213, and a fourth flow path 214. A battery 221 is provided in the first channel 211, a chiller 222 is provided in the second channel 212, a PCU 223 is provided in the third channel 213, and a radiator 224 is provided in the fourth channel 214. . Further, a pump 231 is provided in the second flow path 212, and a pump 232 is provided in the third flow path 213.

Then, as shown in FIG. 81, as the first temperature control pattern, the flow path switching device 1 is set to the first flow path pattern shown in FIGS. 73 and 74. As a result, fluid (for example, water) is circulated through the first channel 211 where the battery 221 is provided and the third channel 213 where the PCU 223 is provided. Further, the fluid is circulated through the second flow path 212 where the chiller 222 is provided and the fourth flow path 214 where the radiator 224 is provided. Such a first temperature control pattern is used, for example, to warm up the battery 221 and heat the room temperature inside the vehicle during extremely low temperatures in winter.

Furthermore, as shown in FIG. 82, as the second temperature control pattern, the flow path switching device 1 is set to the second flow path pattern shown in FIGS. 75 and 76. This allows the fluid to be transferred to the first flow path 211 where the battery 221 is provided, the second flow path 212 where the chiller 222 is provided, the third flow path 213 where the PCU 223 is provided, and the fourth flow path where the radiator 224 is provided. The water is circulated at 214. Such a second temperature control pattern is used, for example, when heating the room temperature inside the vehicle in winter, or when dissipating heat from the radiator 224 in summer.

As shown in FIG. 83, as the third temperature control pattern, the flow path switching device 1 is set to the third flow path pattern shown in FIGS. 77 and 78. Thereby, the fluid is circulated through the first channel 211 where the battery 221 is provided and the second channel 212 where the chiller 222 is provided. Further, the fluid is circulated through the third flow path 213 where the PCU 223 is provided and the fourth flow path 214 where the radiator 224 is provided. Such a third temperature control pattern is used, for example, when cooling the battery 221 or dissipating heat from the PCU during high temperatures in summer or when rapidly charging the battery 221.

As shown in FIG. 84, as the fourth temperature control pattern, the flow path switching device 1 is set to the fourth flow path pattern shown in FIGS. 79 and 80. Thereby, the fluid is circulated through the first channel 211 where the battery 221 is provided, the second channel 212 where the chiller 222 is provided, and the third channel 213 where the PCU 223 is provided. Such a fourth temperature control pattern prevents overcooling by bypassing the radiator 224 and adjusts the temperature of the battery 221 and PCU 223 to an appropriate temperature, for example, when heating and cooling is not required in spring or autumn. sometimes used.

Note that the above-described embodiments are merely illustrative and do not limit the present disclosure in any way, and it goes without saying that various improvements and modifications can be made without departing from the spirit of the disclosure.

For example, the housing 11 may be an example of the "second member" of the present disclosure, and the fixed disk 50 may be an example of the "first member" of the present disclosure.

Further, although the housing 11 has three or four inlet ports 20a and the fixed disk 50 has three or four outlet ports 70a, the housing 11 has five or more inlet ports 20a. However, the fixed disk 50 may include more than five exit ports 70a.

1 Flow path switching device 11 Housing 12 Valve body 13 Drive unit 20 Inflow path 20a Inlet port 20b Opening 21 First inflow path 21a First inlet port 21b Opening 22 Second inflow path 22a Second inlet port 22b Opening 23 Third inflow channel 23a Third inlet port 23b Opening 24 Fourth inflow channel 24a Fourth inlet port 30 Outflow channel 31 First outflow channel 32 Second outflow channel 33 Third outflow channel 34 Fourth outflow channel 40 Rotating disk 41 Disk portion 50 Fixed disk 51 Disk portion 60 Rotating disk communication path 61 First rotating disk communication path 62 Second rotating disk communication path 63 Third rotating disk communication path 70 Fixed disk communication path 70a Outlet port 70b Opening 71 First fixed disk communication path 71a First outlet port 71b Opening 72 Second fixed disk communication path 72a Second outlet port 72b Opening 73 Third fixed disk communication path 73a Third outlet port 73b Opening Part 74 Fourth fixed disk communication passage 74a Fourth outlet port 81 Seal members 91, 92 Inlet side R-shaped parts 101, 102 Outlet side R-shaped part 111 Housing side communication passage 111-1 First housing side communication passage 111-2 2 housing side communication passage 112 Fixed disk side communication passage 112-1 1st fixed disk side communication passage 112-2 2nd fixed disk side communication passage 121 (of the housing side communication passage) R-shaped portion 122 (of the fixed disk side communication passage ) R-shaped portion 131 Vertical straight communication path 131-1 First vertical straight communication path 131-2 Second vertical straight communication path 131-3 Third vertical straight communication path 131-4 Fourth vertical straight communication path 141 (Housing side communication Large R-shaped portion 142 (of the passageway) Large R-shaped portion 151 (of the fixed disk side communication path) Channel adapter 160 Rotating disk communication path 161 First rotating disk communication path 162 Second rotating disk communication path 163 Third rotating disk communication path 164 4th rotating disk communication path 171 R-shaped part 201 Fluid system 221 Battery 222 Chiller 223 PCU
224 Radiator L center axis

Claims

a first member;
A rotating member that rotates around a rotating shaft,
a second member;
The first member, the rotating member, and the second member are arranged in this order with respect to the direction of the rotating shaft,
the first member includes at least one port;
The second member includes a plurality of ports,
The rotating member includes a communication path that communicates the port of the first member and the port of the second member,
A flow path switching device in which the rotary member rotates to switch a combination of a port of the first member and a port of the second member that are communicated through the communication path, thereby switching a flow path through which a fluid flows.
In the cross section in the direction of the rotation axis,
The communicating path includes an R-shaped portion having an R-shaped inner wall,
The R-shaped portion is configured to connect the port of the first member and the port of the second member, which are arranged at different positions in the circumferential direction around the rotation axis, through the communication path. being formed at positions facing each of the port opening of the member and the port opening of the second member;
A flow path switching device characterized by:
The flow path switching device according to claim 1,
one port of the second member is arranged at the same position in the circumferential direction with respect to one port of the first member,
The communication path is
When the rotating member is at a first position in the rotational direction, the second member is arranged at the same position in the circumferential direction with respect to the port of the first member and the port of the first member. communicate with the port of
When the rotational direction position of the rotating member is a second position rotated by a predetermined angle from the first position, the port of the first member and the circumferential direction relative to the port of the first member communicating with ports of the second member disposed at different positions;
A flow path switching device characterized by:
a first member;
A rotating member that rotates around a rotating shaft,
a second member;
The first member, the rotating member, and the second member are arranged in this order with respect to the direction of the rotating shaft,
the first member includes at least one port;
The second member includes a plurality of ports,
The rotating member includes a communication path that communicates the port of the first member and the port of the second member,
A flow path switching device in which the rotary member rotates to switch a combination of a port of the first member and a port of the second member that are communicated through the communication path, thereby switching a flow path through which a fluid flows.
one port of the second member is arranged at the same position in a circumferential direction centering on the rotation axis with respect to one port of the first member,
The communication path is
When the rotating member is at a first position in the rotational direction, the second member is arranged at the same position in the circumferential direction with respect to the port of the first member and the port of the first member. communicate with the port of
When the rotational direction position of the rotating member is a second position rotated by a predetermined angle from the first position, the port of the first member and the circumferential direction relative to the port of the first member communicating with ports of the second member disposed at different positions;
A flow path switching device characterized by:
a first member;
A rotating member that rotates around a rotating shaft,
a second member;
The first member, the rotating member, and the second member are arranged in this order with respect to the direction of the rotating shaft,
The first member and the second member each include three or more ports,
A flow path switching device that switches a flow path by rotating the rotating member and switching a combination of ports to be communicated,
In the cross section in the direction of the rotation axis,
The rotating member is
a first member side communication path provided on the first member side and capable of communicating ports of adjacent first members;
a second member side communication path provided on the second member side and capable of communicating ports of adjacent second members;
The first member side communication passage and the second member side communication passage each include an R-shaped portion having an inner wall formed in an R shape,
The R-shaped portion of the first member side communication path is located at a position opposite to the opening of the port of the first member when the ports of adjacent first members are communicated with each other through the first member side communication path. formed in
The R-shaped portion of the second member side communication path is located at a position opposite to the opening of the port of the second member when the ports of the adjacent second member are communicated with each other through the second member side communication path. that it is formed in
A flow path switching device characterized by:
In the flow path switching device according to claim 4,
The rotating member is provided with a through communication path that allows communication between the port of the first member and the port of the second member;
A flow path switching device characterized by:
The flow path switching device according to claim 5,
one port of the second member is arranged at the same position in a circumferential direction centering on the rotation axis with respect to one port of the first member;
A flow path switching device characterized by:
The flow path switching device according to any one of claims 4 to 6,
All the ports of the first member and/or all the ports of the second member are arranged within a range of 180° in a circumferential direction around the rotation axis;
A flow path switching device characterized by:
The flow path switching device according to claim 7,
The rotating member includes a plurality of through passages that can communicate the ports of the first member and the ports of the second member;
A flow path switching device characterized by: