Flow dividing mixing mechanism

Abstract

To provide a flow dividing mixing mechanism that does not require piping for providing a valve, has a simple structure, and can downsize a piping system for working fluid.SOLUTION: A flow dividing mixing mechanism 40 according to the present disclosure comprises: a main body 41 in which an internal air inflow pipe 33 and an expanded air inflow pipe 26 (two inflow pipes) for making fluid flow are connected to both end parts in an axial direction, and to which an expanded air discharge pipe 21 for discharging working fluid in a radial direction is connected; and a switching member 50 housed inside the main body 41, and rotatably supported coaxially with the main body 41. The switching member 50 can establish communication between one of the two inflow pipes and the expanded air discharge pipe 21 by being rotated with respect to the main body 41.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a partial flow mixing mechanism. [Background technology]

[0002] Patent Document 1 discloses a valve structure in which the pneumatic valve includes an axisymmetric valve body configured to rotate in one rotational direction from a first position in which the pneumatic valve fluidly connects a first port of a surgical instrument to pressurized air and a second port of the surgical instrument to exhaust, to a second position in which the pneumatic valve fluidly connects the first port to exhaust and the second port to pressurized air, and then back to the first position, and the axisymmetric valve body rotates continuously in one rotational direction to alternate between pressurized air and exhaust between the two ports of the surgical instrument, thereby driving a dual actuation operation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-516621 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a flow dividing and mixing mechanism that does not require piping for providing valves, has a simple configuration, and can reduce the size of the piping system for the working fluid. [Means for solving the problem]

[0005] The flow dividing and mixing mechanism of the present disclosure comprises a main body to which two inlet pipes for circulating fluid are connected at both axial ends and to which a discharge pipe for discharging working fluid in a radial direction is connected, and a switching member that is housed inside the main body and supported coaxially with the main body so as to be freely rotatable, and the switching member is configured to be able to connect one of the two inlet pipes to the discharge pipe by rotating it relative to the main body. Effect of the Invention

[0006] According to the present disclosure, by introducing fluid from two inlet pipes and changing the angle of the switching member, it is possible to send the fluid from only one of the inlet pipes or the fluid with the flow rate of each inlet pipe adjusted to the discharge pipe. Therefore, since piping with a valve is not required, the working fluid piping system can be made smaller. [Brief description of the drawings]

[0007] [Figure 1] Schematic diagram showing an air refrigerant type air conditioner according to a first embodiment. [Diagram 2] FIG. 1 is a front view showing a flow dividing and mixing mechanism according to a first embodiment; [Diagram 3] FIG. 1 is a plan view showing a flow dividing and mixing mechanism in the first embodiment; [Figure 4] Cross-sectional view taken along line AA in Figure 2. [Diagram 5] Cross-sectional view taken along line BB in Figure 2. [Figure 6] FIG. 1 is a plan view showing a partition member according to a first embodiment; [Figure 7] FIG. 1 is a front view showing a partition member according to a first embodiment; [Figure 8] An explanatory diagram showing the state where only air is sent from the internal air inlet pipe [Figure 9] An explanatory diagram showing the state in which only air is sent from the expansion air inlet pipe. [Figure 10] FIG. 1 is an explanatory diagram showing the state in which air is sent from the internal air inlet pipe and the expansion air inlet pipe. [Figure 11] FIG. 11 is a plan view showing a flow dividing and mixing mechanism in the second embodiment. [Figure 12] FIG. 11 is a front view showing a flow dividing and mixing mechanism in the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] (The knowledge and other information that formed the basis of this disclosure) At the time the inventors came up with the present disclosure, there was a valve structure that allowed the air flow to flow in and out from any direction by inserting a rotating cylinder with multiple radial through holes between the fluid flow paths in order to change the inflow and outflow direction of the high-pressure, high-velocity air flow, and changing the angle of the rotating cylinder.

[0009] However, in such conventional technology, since a through hole having the same diameter as the fluid piping before and after the inlet and outlet of the valve structure is used, a large pressure loss occurs, especially when a high-speed, large-flow fluid is circulated. In addition, since the drive mechanism for the rotating cylinder needs to be provided in series with the valve structure, the inventors discovered a problem that the piping method is limited and the overall dimensions of the system may become large. In order to solve this problem, the inventors have come to form the subject of the present disclosure. The present disclosure provides a flow dividing and mixing mechanism that does not require piping for providing valves, has a simple configuration, and can reduce the size of the piping system for the working fluid.

[0010] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0011] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to the drawings. [1-1-1. Configuration of air refrigerant type air conditioner] FIG. 1 is a schematic diagram showing an air refrigerant type air conditioner to which a flow dividing and mixing mechanism according to a first embodiment is applied. As shown in Fig. 1, an air refrigerant type air conditioner 1 includes a cylindrical housing 10. A rotating shaft 11 is disposed inside the housing 10 along the axial direction of the housing 10. The rotating shaft 11 is rotatably supported by bearings provided on both sides of the housing 10. A motor 12 for driving the rotating shaft 11 to rotate is disposed approximately in the center of the rotating shaft 11 .

[0012] A compressor 13 is provided at one end of the rotating shaft 11. The compressor 13 includes an impeller (not shown) that is rotationally driven by the rotation of the rotating shaft 11. An expander 14 is provided at the other end of the rotating shaft 11. The expander 14 includes a wheel (not shown) that is rotated by the rotation of the rotating shaft 11.

[0013] A compressed air suction port 15 is provided at the end of the housing 10 on the compressor 13 side. A compressed air discharge port 16 is provided at the side of the housing 10 on the compressor 13 side. An expanded air intake port 17 is provided on the side of the housing 10 facing the expander 14. An expanded air discharge port 18 is provided on the end of the housing 10 facing the expander 14. Then, by driving the motor 12 to rotate the rotating shaft 11, the impeller of the compressor 13 and the wheel of the expander 14 are rotated together. As a result, air as a fluid sucked in from the compressed air suction port 15 is compressed by the rotation of the impeller and discharged from the compressed air discharge port 16 as high-temperature, high-pressure air. On the other hand, air sucked in through the expansion air intake port 17 is expanded by the rotation of the wheel and is discharged from the expansion air discharge port 18 as low-temperature air.

[0014] Moreover, an air flow path 19 that communicates with the inside of the housing 10 is formed on the outer periphery side of the motor 12 of the housing 10. In this embodiment, the compressed air discharge port 16 of the compressor 13 is connected to the air flow path 19. As a result, the air sent from the compressed air discharge port 16 of the compressor 13 circulates through the air flow path 19 of the housing, and then is released into the atmosphere.

[0015] [1-1-2. Configuration of refrigeration cycle circuit using air refrigerant type air conditioner] FIG. 2 is a diagram showing the configuration of a refrigeration cycle circuit using the air refrigerant type air conditioner 1. As shown in FIG. 2, a compressed air discharge pipe 20 is connected to the compressed air discharge port 16 of the air refrigerant type air conditioner 1. An expanded air discharge pipe 21 serving as a discharge pipe is connected to the expanded air suction port 17 of the air refrigerant type air conditioner 1.

[0016] The expanded air suction port 17 of the expander 14 of the air refrigerant type air conditioner 1 and the compressed air suction port 15 of the compressor 13 are connected by an air piping 22. A heat exchanger 23 is provided in the middle of the air piping 22 . The heat exchanger 23 is provided with an air conditioning air pipe 24 for exchanging heat with the air flowing through the air pipe 22 . A blower 25 is connected to an end of the conditioned air pipe 24 , which sends outside air through the conditioned air pipe 24 to the air-conditioned space 30 .

[0017] An air inlet 31 for drawing in air from the air-conditioned space 30 and an air outlet 32 ​​for blowing air into the air-conditioned space 30 are provided in the ceiling of the air-conditioned space 30. The air outlet 32 ​​is connected to the conditioned air piping 24. This allows the outside air to be sent to the heat exchanger 23 via the air-conditioning air piping 24 by driving the blower 25, and the air that has exchanged heat with the air piping 22 to be blown out from the air outlet 32 ​​into the air-conditioning space 30. Moreover, one end of an internal air inflow pipe 33 is connected to the air suction port 31 .

[0018] In this embodiment, an air supply chamber 38 is connected to the expanded air discharge pipe 21. A flow dividing and mixing mechanism 40, which will be described later, is housed inside the air supply chamber 38. The other ends of the expanded air inlet pipe 26 and the internal air inlet pipe 33 are connected to the air supply chamber 38. A compressed air on-off valve 36 is provided in the compressed air discharge pipe 20, and an expanded air on-off valve 37 is provided in the expanded air inlet pipe 26.

[0019] [1-1-3. Configuration of the flow dividing and mixing mechanism] Fig. 2 is a front view showing the flow dividing and mixing mechanism in the first embodiment. Fig. 3 is a plan view showing the flow dividing and mixing mechanism in the first embodiment. Fig. 4 is a cross-sectional view taken along line AA in Fig. 2. Fig. 5 is a cross-sectional view taken along line BB in Fig. 2. Fig. 6 is a plan view showing a partition member in the first embodiment. Fig. 7 is a front view showing a partition member in the first embodiment.

[0020] As shown in FIGS. 2 to 5, the flow dividing and mixing mechanism 40 has a cylindrical main body 41. An expanded air discharge pipe 21 is attached to the outer circumferential surface of the main body 41 and extends in a direction substantially perpendicular to the axial direction of the main body 41 . A cylindrical switching member 50 having a smaller diameter than the main body 41 is accommodated inside the main body 41 so as to be rotatable coaxially with the main body 41 . One end of the switching member 50 is connected to an internal air inlet pipe 33 through which internal air of the air-conditioned space 30 flows in, and the other end of the switching member 50 is connected to an expanded air inlet pipe 26 through which outside air flows in.

[0021] The switching member 50 extends in the axial direction of the expanded air discharge pipe 21, and is provided with a partition wall 51 that divides the inside of the switching member 50. In this embodiment, the partition wall 51 is formed in a flat plate shape. The partition wall 51 divides the inside of the switching member 50 into a flow path from the internal air inflow pipe 33 and a flow path from the expanded air inflow pipe 26. A guide plate 52 that extends in the radial direction and is in sliding contact with the inner peripheral surface of the main body 41 is provided on the outer circumferential side of the switching member 50. The guide plate 52 is provided over the entire area of ​​the main body 41 in the axial direction.

[0022] Two circulation openings 53 are formed on the outer periphery of the switching member 50 in a location where the guide plate 52 is not formed. One circulation opening 53 is provided on the connection side of the internal air inlet pipe 33 with the partition wall portion 51 in between, and the other circulation opening 53 is provided on the connection side of the expanded air inlet pipe 26 with the partition wall portion 51 in between. The two flow openings 53 are provided on opposite sides in the diameter direction of the switching member 50 with the guide plate 52 interposed therebetween.

[0023] Four partition plates 42 are provided so as to protrude inward on the inner peripheral side of the main body 41. Each partition plate 42 extends in the axial direction over the entire length of the main body 41 and is formed so as to have a predetermined gap between itself and the outer peripheral surface of the switching member 50. The partition plates 42 are provided so that they form an angle of approximately 90° with each other. Furthermore, the partition plates 42 are provided at positions shifted by 45° with respect to the axial direction of the expanded air discharge pipe 21. When the switching member 50 is rotated, the guide plate 52 can rotate to a position where it abuts against the partition plate 42 .

[0024] [1-2. Operation] Next, the operation of this embodiment will be described. First, when performing a cooling operation, the motor 12 and the blower 25 are driven. At this time, the compressed air on-off valve 36 and the expanded air on-off valve 37 are opened. Driving the motor 12 drives the expander 14 and the compressor 13, and the air sucked in from the expanded air intake port 17 is expanded by the rotation of the wheel, and is sent as low-temperature air from the expanded air discharge port 18 to the air piping 22. The air sent to the air piping 22 is sent to the compressed air intake port 15 of the compressor 13 via the heat exchanger 23, and is discharged from the compressor 13 to the outside via the compressed air discharge piping 20.

[0025] On the other hand, by driving the blower 25 , outside air is taken into the air-conditioning air piping 24 and sent to the heat exchanger 23 . The conditioned air sent from the conditioned air piping 24 to the heat exchanger 23 exchanges heat with the low-temperature expanded air sent from the expander 14 in the heat exchanger 23, and is cooled before being sent to the air-conditioned space 30. Through these operations, the air-conditioned space 30 is cooled.

[0026] Next, when the heating operation is performed, the compressed air on-off valve 36 and the expanded air on-off valve 37 are closed. In this state, the motor 12 and the blower 25 are driven. By driving the motor 12, the expander 14 and the compressor 13 are driven, and the air sucked in from the expanded air intake port 17 is expanded by the rotation of the wheel, and is sent from the expanded air discharge port 18 to the air pipe 22. The air sent to the air pipe 22 is sent to the compressed air intake port 15 of the compressor 13 via the heat exchanger 23. The high-temperature air compressed by the compressor 13 is sent to the compressed air discharge pipe 20 and released to the outside.

[0027] In addition, in this embodiment, when the cooling operation is performed, the flow dividing and mixing mechanism 40 adjusts the flow rates of the air from the internal air inlet pipe 33 and the air from the expanded air inlet pipe 26 . FIG. 8 is an explanatory diagram showing a state in which only air is sent from the internal air inflow pipe 33. As shown in Figure 8, when only air is sent from the internal air inlet pipe 33, the switching member 50 is rotated until the guide plate 52 abuts the partition plate 42 so that the circulation opening 53 provided on the connection side of the internal air inlet pipe 33 faces the expanded air discharge pipe 21. In this state, the internal air inlet pipe 33 and the expanded air discharge pipe 21 communicate with each other, and air from the internal air inlet pipe 33 is sent to the expanded air discharge pipe 21. On the other hand, the flow opening 53 provided on the connection side of the expanded air inlet pipe 26 is kept out of communication with the expanded air discharge pipe 21 because the guide plate 52 and the partition plate 42 abut against each other.

[0028] FIG. 9 is an explanatory diagram showing a state in which only air is sent from the expanded air inflow pipe 26. As shown in Figure 9, when only air is sent from the expanded air inlet pipe 26, the switching member 50 is rotated until the guide plate 52 abuts the partition plate 42 so that the flow opening 53 provided on the connection side of the expanded air inlet pipe 26 faces the expanded air discharge pipe 21. In this state, the expanded air inlet pipe 26 and the expanded air discharge pipe 21 are in communication with each other, and air from the expanded air inlet pipe 26 is sent to the expanded air discharge pipe 21. On the other hand, the flow opening 53 provided on the connection side of the internal air inlet pipe 33 is kept out of communication with the expanded air discharge pipe 21 because the guide plate 52 and the partition plate 42 are in contact with each other.

[0029] FIG. 10 is an explanatory diagram showing a state in which air is sent from the internal air inlet pipe 33 and the expanded air inlet pipe 26. As shown in FIG. 10, when the switching member 50 is rotated so that the guide plate 52 is positioned in the axial direction of the expanded air discharge pipe 21, the guide plate 52 is held in a position where it does not abut against the partition plate . As a result, the circulation opening 53 provided on the connection side of the internal air inflow pipe 33 and the circulation opening 53 provided on the connection side of the expanded air inflow pipe 26 each communicate with the expanded air discharge pipe 21. Therefore, in this case, the air from the internal air inlet pipe 33 and the air from the expanded air inlet pipe 26 are mixed and sent to the expanded air discharge pipe 21.

[0030] By rotating the switching member 50 in this manner, it is possible to selectively send air from the internal air inlet pipe 33 or air from the expanded air inlet pipe 26 to the expanded air discharge pipe 21. Furthermore, by adjusting the amount of rotation of the switching member 50 and tilting the position of the guide plate 52 from the axial direction of the expanded air discharge pipe 21, the air flow rate from the internal air inlet pipe 33 and the air flow rate from the expanded air inlet pipe 26 can be adjusted in any ratio.

[0031] [1-3. Effects, etc.] As described above, the flow dividing and mixing mechanism 40 of this embodiment comprises a main body 41 to which two internal air inlet pipes 33 and an expanded air inlet pipe 26 (inlet pipe) for circulating fluid are connected at both axial ends, and to which an expanded air discharge pipe 21 for discharging working fluid in the radial direction is connected, and a switching member 50 that is housed inside the main body 41 and supported coaxially with the main body 41 so as to be freely rotatable, and the switching member 50 is configured to be able to connect either one of the two inlet pipes to the expanded air discharge pipe 21 by rotating it relative to the main body 41. As a result, by guiding fluid from the internal air inflow pipe 33 and the expanded air inflow pipe 26 and changing the angle of the switching member 50, it is possible to send fluid only from the internal air inflow pipe 33, fluid only from the expanded air inflow pipe 26, or fluid with the flow rates of the internal air inflow pipe 33 and the expanded air inflow pipe 26 adjusted to the expanded air discharge pipe 21. Therefore, piping with valves is not required, and the working fluid piping system can be made smaller.

[0032] In addition, in the flow dividing and mixing mechanism 40 of this embodiment, the switching member 50 has flow openings 53 at radially symmetrical positions, and a pair of guide plates 52 extending radially are provided on the outer periphery of the switching member 50 to circumferentially separate the flow openings 53. This allows the fluid flowing from the internal air inflow pipe 33 or the expanded air inflow pipe 26 (inflow pipe) to the expanded air discharge pipe 21 via the circulation opening 53 to be sent to the expanded air discharge pipe 21 without being mixed by the guide plate 52. Therefore, the fluid can be sent to the expanded air discharge pipe 21 while controlling the flow rate of the fluid from the internal air inflow pipe 33 or the expanded air inflow pipe 26.

[0033] Moreover, in the flow dividing and mixing mechanism 40 of the present embodiment, the switching member 50 includes a partition portion 51 that separates the two flow openings 53 in a direction intersecting the axial direction. This allows the fluid sent from the internal air inlet pipe 33 or the expanded air inlet pipe 26 to be reliably separated by the partition portion 51 inside the switching member 50.

[0034] In addition, in the flow dividing and mixing mechanism 40 of this embodiment, a partition plate 42 is provided on the inner circumference of the main body 41, extending axially over the entire length of the main body 41 and having a predetermined gap between it and the outer peripheral surface of the switching member 50, and when the switching member 50 rotates, the partition plate 42 abuts against the guide plate 52 to form a flow path connecting either one of the two internal air inlet pipes 33 or the expanded air inlet pipe 26 (inlet pipe) to the expanded air discharge pipe 21. As a result, the switching member 50 rotates to bring the partition plate 42 into contact with the guide plate 52, thereby blocking either the fluid sent from the internal air inlet pipe 33 or the expanded air inlet pipe 26. Therefore, the switching member 50 can function as a shutoff valve.

[0035] In the flow dividing and mixing mechanism 40 of the present embodiment, the partition portion 51 is formed in a flat plate shape perpendicular to the axial direction of the switching member 50. This allows the fluid sent from the internal air inlet pipe 33 or the expanded air inlet pipe 26 to be reliably separated by the partition portion 51 inside the switching member 50.

[0036] (Embodiment 2) Next, a second embodiment of the present disclosure will be described. [2-1. Configuration] Fig. 11 is a plan view showing the flow dividing and mixing mechanism in embodiment 2. Fig. 12 is a front view showing the flow dividing and mixing mechanism in embodiment 2. As shown in FIGS. 11 and 12, in this embodiment, the partition wall 51 is formed in a semi-spherical shape having a diameter substantially equal to the outer diameter of the switching member 50. As shown in FIG. That is, the partition wall 51 is formed in a curved shape toward the flow opening 53 when viewed from the front, as shown in FIG. [2-2. Actions and Effects] In this embodiment, by forming the partition 51 into a hemispherical shape having a diameter substantially equal to the outer diameter of the switching member 50, the fluid sent to the switching member 50 can be guided along the curved surface and sent to the expanded air discharge piping 21. Therefore, the fluid can be sent to the expanded air discharge piping 21 without generating turbulent flow of the fluid. Therefore, in the flow dividing and mixing mechanism 40 of the present embodiment, the partition portion 51 is formed in a semispherical shape having a diameter substantially equal to the outer diameter of the switching member 50. This allows the fluid to be guided to the expanded air discharge pipe 21 with as little turbulence as possible when the fluid changes its flow direction due to the partition wall portion 51. This makes it possible to further reduce the pressure loss of the fluid.

[0037] (Other embodiments) As described above, the first and second embodiments have been described as examples of the technology disclosed in this application. However, the technology in this disclosure is not limited to these, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the first and second embodiments to create new embodiments.

[0038] (Additional Note) The above description of the embodiments discloses the following techniques. (Technology 1) A flow-dividing and mixing mechanism comprising: a main body to which two inlet pipes for circulating fluid are connected at both axial ends and a discharge pipe for discharging working fluid in a radial direction is connected; and a switching member that is housed inside the main body and supported coaxially with the main body so as to be rotatable, the switching member being configured to be able to communicate between one of the two inlet pipes and the discharge pipe by rotating relative to the main body. With this configuration, fluid is guided from two inlet pipes, and by changing the angle of the switching member, the fluid from only one of the inlet pipes, or the fluid with the flow rate of each inlet pipe adjusted, can be sent to the discharge pipe. Therefore, piping with valves is not required, and the working fluid piping system can be made smaller.

[0039] (Technology 2) The flow dividing and mixing mechanism according to Technology 1, wherein the switching member has circulation openings at symmetrical positions in the radial direction, and a pair of guide plates extending in the radial direction and dividing the circulation openings in the circumferential direction are provided on the outer periphery of the switching member. With this configuration, the fluid flowing from the inlet pipe through the flow opening to the outlet pipe can be sent to the outlet pipe without being mixed by the guide plate, so that the fluid can be sent to the outlet pipe while controlling the flow rate of the fluid from the inlet pipe.

[0040] (Technical Technique 3) The flow dividing and mixing mechanism according to Technical Technique 2, wherein the switching member is provided with a partition portion that separates the two flow openings in a direction intersecting the axial direction. With this configuration, the fluid sent from the inlet pipe can be reliably separated by the partition portion inside the switching member.

[0041] (Technology 4) A dividing plate is provided on an inner circumference of the main body, extending in the axial direction over the entire length of the main body and having a predetermined gap between itself and an outer circumference of the switching member, and the dividing plate abuts against the guide plate when the switching member rotates to form a flow path connecting one of the two inlet pipes and the discharge pipe. This is the flow dividing and mixing mechanism described in Technology 2 or Technology 3. With this configuration, the switching member rotates to bring the partition plate and the guide plate into contact with each other, thereby blocking one of the fluids sent from the two inlet pipes, allowing the switching member to function as a shutoff valve.

[0042] (Technical Aspect 5) The flow dividing and mixing mechanism according to Technical Aspect 3, wherein the partition portion is formed in a flat plate shape perpendicular to the axial direction of the switching member. With this configuration, the fluids sent from the two inlet pipes can be reliably separated by the partition portion inside the switching member.

[0043] (Technical 6) The flow dividing and mixing mechanism according to Technical 3, wherein the partition portion is formed in a hemispherical shape having a diameter substantially equal to an outer diameter of the switching member. With this configuration, the fluid can be guided to the discharge pipe with as little turbulence as possible when the fluid changes its flow direction due to the partition, thereby making it possible to further reduce pressure loss of the fluid. [Industrial Applicability]

[0044] INDUSTRIAL APPLICABILITY The present disclosure can be suitably used as a flow dividing and mixing mechanism that does not require piping for providing valves, has a simple configuration, and can reduce the size of the piping system for the working fluid. [Explanation of symbols]

[0045] 1. Air refrigerant type air conditioner 10. Chassis 11 Rotating shaft 12 Motor 13 Compressor 14 Expander 15 Compressed air intake 16 Compressed air outlet 17 Expansion air intake 18 Expansion air outlet 19 Air flow path 20 Compressed air discharge piping 21 Expanded air discharge piping 22 Air piping 23 Heat exchanger 24 Air conditioning piping 25 Blower 26 Expanded air inlet pipe 30 Air-conditioned space 31 Air intake 32 Air outlet 33 Internal air inlet piping 36 Compressed air on-off valve 37 Expansion air on-off valve 38 Air supply chamber 40 Diversion mixing mechanism 41 Main unit 42 Partition 50 Switching member 51 Bulkhead 52 Guide plate 53 Flow opening

Claims

1. a main body to which two inlet pipes for circulating a fluid are connected at both ends in an axial direction and to which a discharge pipe for discharging the working fluid in a radial direction is connected; A switching member that is accommodated inside the main body and supported coaxially with the main body so as to be freely rotatable, The switching member is configured to be capable of communicating one of the two inlet pipes with the discharge pipe by rotating it relative to the main body. Separate flow mixing mechanism.

2. The switching member has flow openings at symmetrical positions in a radial direction, A pair of guide plates extending in a radial direction and partitioning the flow opening in a circumferential direction is provided on an outer periphery of the switching member. The flow-mixing mechanism of claim 1 .

3. The switching member includes a partition wall portion that separates the two flow openings in a direction intersecting the axial direction. The flow-splitting mixing mechanism of claim 2 .

4. A partition plate is provided on the inner periphery of the main body, extending in the axial direction over the entire length of the main body and having a predetermined gap between the partition plate and the outer periphery of the switching member. When the switching member rotates, the partition plate comes into contact with the guide plate to form a flow path that communicates one of the two inlet pipes with the discharge pipe. The flow dividing and mixing mechanism according to claim 2 or 3.

5. The partition wall is formed in a flat plate shape perpendicular to the axial direction of the switching member. The flow-splitting mixing mechanism of claim 3.

6. The partition portion is formed in a hemispherical shape having a diameter substantially equal to an outer diameter of the switching member. The flow-splitting mixing mechanism of claim 3.

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