Flow path member

Abstract

This flow path member is used in a medium circulation device that circulates a medium. The flow path member is provided with a flow path tube, a connecting member, and a clamping member. The flow path pipe is internally provided with a flow path pipe space through which the medium flows. The connection member has a connection member space in the interior thereof through which the medium flows, and at least a portion of the connection member is disposed in the flow path pipe space. The clamping member is disposed on the outer peripheral surface of the flow path pipe. The thermal expansion coefficient of the flow path pipe is different from the thermal expansion coefficient of the connecting member. The clamping member is provided with: a belt part that surrounds the outer peripheral surface of the flow path pipe at a position where the flow path pipe and the connecting member overlap in the radial direction; and an action part that varies the size of the inner diameter of the band part so as to match a change in the size of at least one of the outer diameter of the flow path pipe, the inner diameter of the flow path pipe, and the outer diameter of the connection member.

Description

Technical Field

[0001] The present disclosure relates to a flow path member. Background Art

[0002] A known pipe joint uses a bundling member (for example, refer to Patent Document 1) at a joint portion where a pipe is disposed inside a tube in order to achieve an effect of preventing leakage of a medium. The bundling member includes a band portion that surrounds the outer peripheral surface of the pipe. Prior Art Documents Patent Documents

[0003] Patent Document 1: U.S. Patent Application Publication No. 2007 / 0090643 Summary of the Invention

[0004] In the pipe joint described in Patent Document 1, the medium may leak from a flow path member such as the joint portion. Particularly, when the thermal expansion rate of the pipe is different from the thermal expansion rate of the piping, the medium may leak from the flow path member.

[0005] An object of the present disclosure is to provide a flow path member capable of suppressing leakage of a medium from the flow path member.

[0006] A flow path member according to one aspect of the present disclosure is used in a medium circulation device that circulates a medium. The flow path member includes a flow path tube, a connection member, and a clamping member. The flow path tube has a flow path tube space inside for the medium to flow through. The connection member has a connection member space inside for the medium to flow through, and at least a part of the connection member is disposed in the flow path tube space. The clamping member is disposed on the outer peripheral surface of the flow path tube. The thermal expansion rate of the flow path tube is different from the thermal expansion rate of the connection member. The clamping member includes: a band portion that surrounds the outer peripheral surface of the flow path tube at a position where the flow path tube and the connection member overlap in the radial direction; and an acting portion that changes the size of the inner diameter of the band portion in a manner matching a change in the size of at least one of the outer diameter of the flow path tube, the inner diameter of the flow path tube, and the outer diameter of the connection member.

[0007] According to the present disclosure, there is provided a flow path member capable of suppressing leakage of a medium from the flow path member. Brief Description of the Drawings

[0008] Figure 1 It is a diagram showing the structure of the cooling system of the present embodiment. Figure 2 It is Figure 1 An external perspective view of the CDU shown. Figure 3 It is Figure 1 An external perspective view of the CDU, the collection manifold, and the distribution manifold shown. Figure 4 It is a cross-sectional view of a clamping member and an inflow flow path pipe. Figure 5 It is an external perspective view of an example of the clamping member. Figure 6 It is an external perspective view of another example of the clamping member. Detailed implementation manners

[0009] Hereinafter, with reference to the drawings, each implementation manner illustrated in the present disclosure will be described. In addition, the same or corresponding parts in the drawings are denoted by the same reference numerals, and repeated descriptions will not be given.

[0010] In the drawings, for the sake of easy understanding, the X-axis, Y-axis, and Z-axis of a three-dimensional rectangular coordinate system are appropriately shown. In one example, the positive direction of the Z-axis (Z direction) represents the upward direction, and the negative direction of the Z-axis represents the downward direction. However, the up-down direction, the upward direction, and the downward direction are determined for the convenience of explanation and do not need to be consistent with the vertical direction. In addition, the up-down direction is defined only for the convenience of explanation and does not limit the orientation of the flow path member of the present disclosure during use and assembly.

[0011] In addition, in this specification, the positive direction of the X-axis (X direction) represents the direction away from the CDU, which is referred to as "one side of the front-back direction". In addition, the negative direction of the X-axis represents the direction approaching the CDU, which is referred to as "the other side of the front-back direction". The "front-back direction" is an example of the "first direction". In addition, the "Y-axis" is an example of the "second direction". The second direction intersects the first direction.

[0012] In addition, in this specification, the direction parallel to the central axis of the connection member 111a is described as "axial direction AD1" (for example Figure 4 ). In addition, the direction orthogonal to the central axis is described as "radial direction RD1". The "radial direction RD1" can be any direction as long as it is orthogonal to the central axis and is not particularly limited.

[0013] And, the direction parallel to the central axis of the inflow flow path pipe 210 is described as "axial direction AD2" (for example Figure 4 ). In addition, the direction orthogonal to the central axis is described as "radial direction RD2". The "radial direction RD2" can be any direction as long as it is orthogonal to the central axis and is not particularly limited.

[0014] And, the direction parallel to the central axis of the belt portion 310 of the clamping member 300 is described as "axial direction AD3" (for example Figure 4 ). In addition, the direction orthogonal to the central axis is described as "radial direction RD3". The "radial direction RD3" can be any direction as long as it is orthogonal to the central axis and is not particularly limited.

[0015] In addition, in this specification, the "parallel direction" also includes a substantially parallel direction, and the "orthogonal direction" also includes a substantially orthogonal direction. Furthermore, in this specification, the "ring shape", "cylindrical shape", "tube shape", "circular shape", and "wave shape" do not represent strictly defined shapes.

[0016] [Cooling System 100] Figure 1 is a schematic diagram showing the structure of the cooling system 100 of the present embodiment. As Figure 1 shown, the cooling system 100 cools at least one heat source 5 disposed in the space A01. Specifically, the cooling system 100 includes a CDU 1, a distribution manifold 2, a collection manifold 3, at least one cold plate 4, a cooling device 6, and flow paths 7 and 8. The CDU 1 is an example of a "medium circulation device".

[0017] In addition, when the cooling system 100 includes one cold plate 4, the cooling system 100 may not include the distribution manifold 2 and the collection manifold 3.

[0018] The CDU 1, the distribution manifold 2, the collection manifold 3, and the plurality of cold plates 4 are disposed in the space A01. The space A01 is, for example, a server room.

[0019] [Heat Source 5 and Rack 9] A rack 9 is provided in the space A01. A plurality of heat sources 5 are housed in the rack 9. The plurality of heat sources 5 are housed in the rack 9 in a manner arranged along a specific direction. The specific direction is, for example, the Z direction or the Y direction.

[0020] Typically, each heat source 5 is an electronic component or an electronic device. An electronic component is a component that constitutes an electronic device, and includes, for example, a central processing unit (so-called CPU), an electrolytic capacitor, a power semiconductor module, or a printed circuit board. The electronic component operates and generates heat due to power supply. The electronic device is a rack-mounted server or a blade server. The electronic device may also be other projectors, personal computers, or displays. The plurality of heat sources 5, the CDU 1, the distribution manifold 2, the collection manifold 3, and the plurality of cold plates 4 are disposed in the rack 9. In addition, a plurality of racks 9 may be provided in the space A01.

[0021] [Outline of CDU 1] The CDU 1 is, for example, housed in the rack 9 during use. However, it is not limited thereto, and it may be that the CDU 1 is disposed outside the rack 9 during use. Specifically, the CDU 1 includes a housing 15, a pump (not shown), and a heat exchanger (not shown). The pump presses the secondary refrigerant into the housing 15. The heat exchanger exchanges heat between the primary refrigerant and the secondary refrigerant.

[0022] [Overview of various outflow ports 12 and 14 and various inflow ports 11 and 13] CDU1 has a secondary inlet 11, a secondary outlet 12, a primary inlet 13 and a primary outlet 14. High-temperature secondary refrigerant flows into the secondary inlet 11 from the collecting manifold 3. Low-temperature primary refrigerant flows into the primary inlet 13 via the flow path 7. CDU1 performs heat exchange between the secondary refrigerant (high temperature) flowing into CDU1 from the secondary inlet 11 and the primary refrigerant (low temperature) flowing into CDU1 from the primary inlet 13. As a result, in CDU1, the thermal energy of the secondary refrigerant is transferred to the primary refrigerant. That is, through heat exchange, the temperature of the secondary refrigerant is lowered compared to when it flows into CDU1. CDU1 presses the secondary refrigerant, which has become low temperature, from the secondary outlet 12 to the distribution manifold 2. The primary refrigerant, which has become high temperature, is sent to the flow path 8 from the primary outlet 14.

[0023] [Primary refrigerant and secondary refrigerant] The secondary refrigerant is, for example, a cooling liquid. Examples of the cooling liquid include antifreeze liquid and pure water. Typical examples of the antifreeze liquid are ethylene glycol aqueous solution or propylene glycol aqueous solution. The primary refrigerant is a refrigerant of the same type or a different type as the secondary refrigerant. In addition, at least one of the primary refrigerant and the secondary refrigerant may be a gas refrigerant.

[0024] [Distribution Manifold 2] The distribution manifold 2 has a common flow path 21 and a plurality of individual flow paths 22. Figure 1 In the figure, for the purpose of easy understanding, only three individual flow paths 22 are shown. The secondary refrigerant can flow in the common flow path 21 and each of the plurality of individual flow paths 22. The other end of the common flow path 21 is connected to the secondary outflow port 12 of the CDU 1 and serves as an inflow port for the secondary refrigerant in the distribution manifold 2. One end of each of the plurality of individual flow paths 22 is connected to the common flow path 21 in a manner that the secondary refrigerant can flow. The other end of each of the plurality of individual flow paths 22 serves as an outflow port for the secondary refrigerant in the distribution manifold 2 and is connected to the inflow port 41 of the cold plate 4, respectively.

[0025] [Cold plate 4] Each cold plate 4 is in thermal contact with at least one heat source 5. A secondary refrigerant (low temperature) flows inside each cold plate 4. In detail, each cold plate 4 is arranged to be in direct thermal contact with the heat source 5. Alternatively, each cold plate 4 may be arranged to be in thermal contact with the heat source 5 via a heat conducting sheet (not shown), for example. That is, the term "thermal contact" includes the meaning of "direct thermal contact" and the meaning of "indirect thermal contact".

[0026] Each cold plate 4 has an inlet 41, an outlet 42 for the secondary refrigerant, and an internal flow path 43. The internal flow path 43 connects the inlet 41 and the outlet 42 in such a way that the secondary refrigerant can flow through. The secondary refrigerant (low temperature) flows into the inlet 41 from a separate flow path 22 connected to the inlet 41. The secondary refrigerant flows through the internal flow path 43 towards the outlet 42. Therefore, the thermal energy generated in the heat source 5 moves to the secondary refrigerant flowing in the internal flow path 43 of the cold plate 4 in thermal contact with the heat source 5. As a result, the heat source 5 is cooled and the temperature of the secondary refrigerant rises. The secondary refrigerant (high temperature) flows out from the outlet 42 to a separate flow path 31 of the collection manifold 3.

[0027] [Collection manifold 3] The collection manifold 3 has a plurality of separate flow paths 31 and a common flow path 32. In addition, Figure 1 , for the purpose of easy understanding, three separate flow paths 31 are shown. The secondary refrigerant can flow through each of the plurality of separate flow paths 31 and the common flow path 32. The other end of the common flow path 32 serves as the outlet for the secondary refrigerant in the collection manifold 3 and is connected to the secondary inlet 11 of the CDU1. One end of each separate flow path 31 is connected to the common flow path 32 in such a way that the secondary refrigerant can flow through. The other end of each separate flow path 31 serves as the inlet for the secondary refrigerant in the collection manifold 3 and is connected to the outlet 42 of the cold plate 4 respectively. Therefore, the secondary refrigerant circulates in the CDU1, the distribution manifold 2, the cold plate 4, and the collection manifold 3 in this order.

[0028] [Cooling device 6] The cooling device 6 is provided, for example, outside the space A01. In addition, the cooling device 6 can also be provided either indoors or outdoors. The cooling device 6 is, for example, a refrigerator or a cooling tower. The cooling device 6 includes: an inlet 61, an outlet 62 for the primary refrigerant, and an internal flow path 63; a cooling section 64; and a pump 65. The internal flow path 63 connects the inlet 61 and the outlet 62 in such a way that the primary refrigerant can flow through. The cooling section 64 and the pump 65 are configured to be connected to the internal flow path 63.

[0029] The primary refrigerant flowing into the inlet 61 passes through the flow path and flows into the cooling section 64. The cooling section 64 cools the primary refrigerant flowing into the cooling section 64. The cooling method in the cooling section 64 can be either an air-cooling method or a water-cooling method. The primary refrigerant flowing out from the cooling section 64 passes through the flow path and flows into the pump 65. The pump 65 pumps the primary refrigerant flowing into the pump 65 towards the outlet 62. Figure 1 In, the pump 65 is located between the cooling section 64 and the outlet 62 in the flow path of the primary refrigerant. However, this is not limited thereto, and the pump 65 can also be located between the inlet 61 and the cooling section 64 in the flow path of the primary refrigerant.

[0030] [Details of the CDU1] Figure 2 is Figure 1 A perspective view of the exterior of the CDU1 shown in the figure.

[0031] [Housing 15 and plates 151 - 156] As Figure 2 shown, the outer shape of the housing 15 is, for example, approximately rectangular parallelepiped - shaped, relatively thin in the Z - direction and relatively long in the X - direction. The housing 15 has plates 151 - 156. The plates 151 - 156 define the outer shape of the housing 15. The plates 151 - 156 separate the internal space of the housing 15 from the outside.

[0032] Plates 151 and 152 are separated from each other in the X - direction. In the embodiment, plate 151 is located on one side in the X - direction with respect to plate 152. Plates 151 and 152 extend in both the Z - direction and the Y - direction.

[0033] Plates 153 and 154 are separated from each other in the Z - direction. In the embodiment, plate 154 is located on one side in the Z - direction with respect to plate 153. Plates 153 and 154 extend in both the X - direction and the Y - direction.

[0034] Plates 155 and 156 are separated from each other in the Y - direction. In the embodiment, plate 155 is located on one side in the Y - direction with respect to plate 156. Plates 155 and 156 extend in both the Z - direction and the X - direction. Additionally, in the housing 15, the plates 151 - 156 can be separate and detachable structures respectively, or integrally formed.

[0035] [Power supply unit 201] The CDU1 further includes a power supply unit 201. In the embodiment, the number of power supply units 201 is two. The number of power supply units 201 can be at least one. Preferably, the two power supply units 201 are manufactured according to the same specifications.

[0036] Each power supply unit 201 is a power circuit or the like. Each power supply unit 201, for example, generates a first DC voltage from an AC voltage supplied by a commercial power supply. In contrast, each power supply unit 201 generates a second DC voltage lower than the first DC voltage from the same AC voltage. The first DC voltage is supplied to a pump (not shown), for example. The second DC voltage is supplied to a control unit (not shown), for example.

[0037] In an embodiment, two power supply units 201 are stacked in the Z direction within the housing 15. A partition plate may be disposed between the two power supply units 201. Further, the two power supply units 201 are located between the plates 153 and 154 in the Z direction. The two power supply units 201 are exposed from the plate 151. The two power supply units 201 are located closer to the vicinity of the plate 156 than the plate 155 in the Y direction. Specifically, the two power supply units 201 are close to the plate 156 with a minute gap therebetween.

[0038] [Details of various fluid outlets 12, 14 and various fluid inlets 11, 13] The housing 15 has, on the plate 151, a secondary fluid inlet 11, a secondary fluid outlet 12, a primary fluid inlet 13, and a primary fluid outlet 14 as four ports. Each of the four ports is located on the right side of the power supply unit 201 with respect to the plate 151. Each of the four ports protrudes from the plate 151 in one direction of the X direction.

[0039] The secondary fluid inlet 11 is located, for example, at the lower right corner of the plate 151 when viewed toward the plate 151. In other words, the secondary fluid inlet 11 is located near the other end in the Z direction and one end in the Y direction of the plate 151.

[0040] The primary fluid inlet 13 is located, for example, on the left side of the secondary fluid inlet 11 when viewed toward the plate 151. In other words, the primary fluid inlet 13 is located on the other side in the Y direction with the secondary fluid inlet 11 as a reference.

[0041] The secondary fluid outlet 12 is located, for example, at the upper left diagonal of the primary fluid inlet 13 when viewed toward the plate 151. In other words, the secondary fluid outlet 12 is located on the other side in the Y direction and one side in the Z direction with the primary fluid inlet 13 as a reference.

[0042] The primary fluid outlet 14 is located, for example, above the secondary fluid inlet 11 when viewed toward the plate 151. In other words, the primary fluid outlet 14 is located on one side in the Z direction with the secondary fluid inlet 11 as a reference.

[0043] Next, referring to Figure 3 and Figure 4 , the flow path tube and the clamping member 300 will be described. Figure 3 is Figure 1 an external perspective view of the CDU 1, the collection manifold 3, and the distribution manifold 2 shown in Figure 4 a cross-sectional view of the inflow flow path tube 210 and the clamping member 300.

[0044] As shown in Figure 3 and Figure 4As shown, the cooling system 100 further includes a flow path pipe and four clamping members 300. The flow path pipe and the clamping members 300 are part of the "flow path members". In addition, in the present embodiment, the number of the clamping members 300 is four. In addition, the number of the clamping members 300 may be at least one.

[0045] The secondary flow inlet 11 includes a toroid 110 and a port member 111. The toroid 110 protrudes from the plate 151 in one direction of the X-axis. The port member 111 is disposed on the X-axis side of the toroid 110. The port member 111 includes a block member 111b and a connecting member 111a. The connecting member 111a is part of the "flow path members". The shape of the block member 111b is substantially a rectangular parallelepiped shape. The surface on the other side of the block member 111b in the X-axis direction is connected to the X-axis side of the toroid 110.

[0046] The connecting member 111a is disposed on the surface on the other side of the block member 111b in the Y-axis direction. The connecting member 111a protrudes in the other direction of the Y-axis. The connecting member 111a has a connecting member space 113 inside for the secondary refrigerant to flow through. Specifically, the shape of the connecting member 111a is substantially a toroidal shape. Preferably, a corrugated protrusion is disposed on the outer peripheral surface of the connecting member 111a. In addition, the material of the connecting member 111a may also be a composite material, preferably a metal. And, an internal flow path 112 for connecting the toroid 110 and the connecting member 111a in such a manner that the secondary refrigerant can flow through is disposed inside the block member 111b.

[0047] The secondary flow outlet 12 includes a toroid 120 and a port member 121. The toroid 120 protrudes from the plate 151 in one direction of the X-axis. The length of the toroid 120 in the X-axis direction is longer than the length of the toroid 110 in the X-axis direction. The port member 121 is disposed on the X-axis side of the toroid 120. The port member 121 includes a block member 121b and a connecting member 121a. The shape of the block member 121b is substantially a rectangular parallelepiped shape. The surface on the other side of the block member 121b in the X-axis direction is connected to the X-axis side of the toroid 120.

[0048] The connecting member 121a is disposed on the surface on the one side of the block member 121b in the Y-axis direction. The connecting member 121a protrudes in one direction of the Y-axis. The connecting member 121a has a connecting member space inside for the secondary refrigerant to flow through. Specifically, the shape of the connecting member 121a is substantially a toroidal shape. Preferably, a corrugated protrusion is disposed on the outer peripheral surface of the connecting member 121a. In addition, the material of the connecting member 121a may also be a composite material, preferably a metal. And, an internal flow path for connecting the toroid 120 and the connecting member 121a in such a manner that the secondary refrigerant can flow through is disposed inside the block member 121b.

[0049] The distribution manifold 2 has a common flow port 23. The common flow port 23 is arranged on the Z-direction side and the Y-direction side with respect to the secondary flow inlet 11.

[0050] The common flow port 23 includes a toroid 23b and a connecting member 23a. The connecting member 23a is part of the "flow path member". The connecting member 23a is different from the connecting member 111a. The toroid 23b protrudes toward the other side in the Y direction. The connecting member 23a is arranged on the other side in the Y direction of the toroid 23b. The connecting member 23a protrudes toward the other side in the Y direction. The connecting member 23a has a connecting member space inside for the secondary refrigerant to flow through. Specifically, the shape of the connecting member 23a is generally circular ring-shaped. Preferably, a corrugated protrusion is arranged on the outer peripheral surface of the connecting member 23a. In addition, the material of the connecting member 23a can also be a composite material, preferably a metal.

[0051] The collection manifold 3 also has a common flow port 33 as a port. The common flow port 33 is located on one side in the X direction with reference to the common flow port 23.

[0052] The common flow port 33 includes a toroid 33b and a connecting member 33a. The toroid 33b protrudes toward the other side in the Y direction. The connecting member 33a is arranged on the other side in the Y direction of the toroid 33b. The connecting member 33a protrudes toward the other side in the Y direction. The connecting member 33a has a connecting member space inside for the secondary refrigerant to flow through. Specifically, the shape of the connecting member 33a is generally circular ring-shaped. Preferably, a corrugated protrusion is arranged on the outer peripheral surface of the connecting member 33a. In addition, the material of the connecting member 33a can also be a composite material, preferably a metal.

[0053] The flow path tube includes an inflow flow path tube 210. The secondary refrigerant flows into the CDU 1 from the inflow flow path tube 210.

[0054] The inflow channel pipe 210 has a channel pipe space 211 inside for the secondary refrigerant to flow through. Specifically, the shape of the inflow channel pipe 210 is generally circular ring-shaped. Preferably, the inner diameter of the inflow channel pipe 210 is larger than the outer diameter of the connecting member 111a. In addition, the inflow channel pipe 210 has elasticity and can be bent. Specifically, the material of the inflow channel pipe 210 can also be a composite material, preferably a synthetic resin. At this time, the thermal expansion rate of the inflow channel pipe 210 is different from that of the connecting member 111a. Therefore, when heat moves between the secondary refrigerant and the like and the inflow channel pipe 210 and the connecting member 111a, a gap sometimes occurs between the inflow channel pipe 210 and the connecting member 111a. Specifically, the thermal expansion rate of the inflow channel pipe 210 is larger than that of the connecting member 111a. Therefore, when the inflow channel pipe 210 and the connecting member 111a are heated by the secondary refrigerant or the like, a gap sometimes occurs between the inner peripheral surface of the inflow channel pipe 210 and the outer peripheral surface of the connecting member 111a.

[0055] At least a part of the connecting member 111a is disposed in the channel pipe space 211. Specifically, the connecting member 111a is inserted into the channel pipe space 211 at one end of the inflow channel pipe 210. In other words, the inflow channel pipe 210 has a first part OA where one end side of the inflow channel pipe 210 overlaps with the connecting member 111a. In addition, preferably, the axial direction AD1 of the connecting member 111a coincides with the axial direction AD2 of the inflow channel pipe 210.

[0056] In addition, the connecting member 23a is inserted into the channel pipe space 211 at the other end of the inflow channel pipe 210. In other words, the inflow channel pipe 210 has a second part where the other end side of the inflow channel pipe 210 overlaps with the connecting member 23a. In addition, preferably, the axial direction of the connecting member 23a coincides with the axial direction AD2 of the inflow channel pipe 210.

[0057] In addition, the inflow channel pipe 210 has a return part R that connects the first part OA and the second part. Specifically, one end of the return part R is connected to the first part OA, and the other end of the return part R is connected to the second part. Specifically, the shape of the return part R is generally U-shaped. Therefore, the return part R is disposed on the other side in the Y direction of the connecting member 111a and on the other side in the Y direction of the connecting member 23a.

[0058] The Y-direction length RL from one end of the inflow channel pipe 210 to the end on the other side in the Y direction of the return part R is shorter than twice the Y-direction length OAL of the first part OA or the second part. In other words, the inflow channel pipe 210 is bent within a relatively narrow range.

[0059] Next, with reference to Figures 3 to 5 , the clamping member 300 will be described.Figure 5 This is a perspective view of the appearance of an example of the clamping member 300. As Figures 3 to 5 shown, four clamping members 300 are respectively arranged on the outer peripheral surface of the flow path pipe.

[0060] Specifically, one of the four clamping members 300 is arranged on the outer peripheral surface of one end portion of the inflow flow path pipe 210. In addition, one of the four clamping members 300 is arranged on the outer peripheral surface of the other end portion of the inflow flow path pipe 210.

[0061] The clamping member 300 includes a belt portion 310 and an acting portion 320.

[0062] The belt portion 310 surrounds the outer peripheral surface of the inflow flow path pipe 210 at a position where the inflow flow path pipe 210 and the connection member 111a overlap in the radial directions RD1 and RD2. Specifically, the outer peripheral surface of the inflow flow path pipe 210 is surrounded at at least a part of the first portion OA. More specifically, in the radial direction RD3, the inner peripheral surface of the belt portion 310 faces a plurality of protrusions provided on the outer peripheral surface of the connection member 111a. In addition, in the radial direction RD3, the inner peripheral surface of the belt portion 310 faces the protrusion closest to the root side (the block member 111b side) among the plurality of protrusions provided on the outer peripheral surface of the connection member 111a. In addition, a space AA is provided between the outer peripheral surface of the root of the connection member 111a and the inner peripheral surface of the front end portion of the inflow flow path pipe 210. In other words, the belt portion 310 does not surround the outer peripheral surface of the front end portion of the inflow flow path pipe 210 and the outer peripheral surface of the root of the connection member 111a.

[0063] Specifically, the shape of the belt portion 310 is a ring shape in which a part of an arc overlaps. In other words, a part of the belt portion 310 is double-layered. Specifically, one end portion 311 of the belt portion 310 and the other end portion 312 of the belt portion 310 are separated by an interval LL. One end portion of the inflow flow path pipe 210 is inserted into the space of the belt portion 310. The belt portion 310 has elasticity. Specifically, the belt portion 310 is a thin metal. Therefore, the interval LL between the one end portion 311 and the other end portion 312 can change. In other words, the inner diameter of the belt portion 310 can change.

[0064] The sizing portion 320 varies the inner diameter of the belt portion 310 in accordance with a change in at least one of the outer diameter of the inflow channel tube 210, the inner diameter of the inflow channel tube 210, and the outer diameter of the connection member 111a. Specifically, it is preferable that the sizing portion 320 varies the inner diameter of the belt portion 310 in accordance with the outer diameter of the connection member 111a. In detail, when the inner diameter of the inflow channel tube 210 becomes larger than the outer diameter of the connection member 111a due to heat or the like, the sizing portion 320 suppresses a decrease in the interval LL between one end portion 311 and the other end portion 312. As a result, an increase in the inner diameter of the belt portion 310 is suppressed. Accordingly, the inner peripheral surface of the inflow channel tube 210 is pressed against the outer peripheral surface of the connection member 111a. Further, when the outer diameter of the connection member 111a becomes smaller than the inner diameter of the inflow channel tube 210 due to heat or the like, the sizing portion 320 increases the interval LL between one end portion 311 and the other end portion 312. As a result, the inner diameter of the belt portion 310 becomes smaller. Accordingly, the inner peripheral surface of the inflow channel tube 210 is pressed against the outer peripheral surface of the connection member 111a.

[0065] As described above, according to the embodiment, even when a change in which the sizes of the inflow channel tube 210 and the connection member 111a are different due to heat occurs, leakage of the secondary refrigerant from between the inflow channel tube 210 and the connection member 111a can be suppressed. Further, the inner peripheral surface of the belt portion 310 faces a plurality of protrusions provided on the outer peripheral surface of the connection member 111a, whereby leakage of the secondary refrigerant from between the inflow channel tube 210 and the connection member 111a can be further suppressed. Further, the inner peripheral surface of the belt portion 310 faces the protrusion closest to the root side (block member 111b side) among the plurality of protrusions provided on the outer peripheral surface of the connection member 111a, whereby leakage of the secondary refrigerant from between the inflow channel tube 210 and the connection member 111a can be further suppressed. Further, by providing a space AA between the outer peripheral surface at the root of the connection member 111a and the inner peripheral surface at the front end portion of the inflow channel tube 210, leakage of the secondary refrigerant from between the inflow channel tube 210 and the connection member 111a can be further suppressed.

[0066] Further, since the inflow channel tube 210 can be bent within a narrow range, it is possible to suppress a reduction in workability due to overlapping with other members (power supply unit) disposed on the same surface of the housing 15.

[0067] Since the material of the inflow channel tube 210 is synthetic resin, winding of the inflow channel tube 210 can be performed favorably as compared with the case where the material of the inflow channel tube 210 is metal.

[0068] Since the material of the connection member 111a is metal, durability can be improved as compared with the case where the material of the connection member 111a is synthetic resin.

[0069] Specifically, the acting portion 320 includes a spring portion 321 and a housing portion 322. Specifically, the housing portion 322 has a cylindrical shape. It is disposed on the outer peripheral surface of the belt portion 310. Specifically, the housing portion 322 is connected to one end portion 311 and the other end portion 312. The axial direction of the housing portion 322 is along the radial direction RD3 of the belt portion 310.

[0070] The spring portion 321 is disposed inside the housing portion 322. Specifically, the spring portion 321 includes a spring. The spring acts on a region of the outer peripheral surfaces of the one end portion 311 and the other end portion 312 in such a manner as to increase the interval LL between the one end portion 311 and the other end portion 312. In addition, when a force that shortens the interval LL between the one end portion 311 and the other end portion 312 acts, the spring suppresses the shortening of the interval LL between the one end portion 311 and the other end portion 312.

[0071] As described above, according to the embodiment, by continuously applying tension to the spring portion 321, the inner diameter of the spring portion 321 can follow whenever a change in which the size of the inflow flow path tube 210 and the size of the connection member 111a are different is shown.

[0072] Next, with reference to Figures 3 to 5 , the outflow flow path tube 220 will be described. The flow path tube further includes an outflow flow path tube 220. The secondary refrigerant flows out from the CDU 1 to the outflow flow path tube 220.

[0073] The outflow flow path tube 220 has a flow path space inside for the secondary refrigerant to flow through. Specifically, the outflow flow path tube 220 has a substantially circular ring shape. Preferably, the inner diameter of the outflow flow path tube 220 is larger than the outer diameter of the connection member 121a. In addition, the outflow flow path tube 220 is elastic and can be bent. Specifically, the material of the outflow flow path tube 220 may also be a composite material, preferably a synthetic resin. At this time, the thermal expansion rate of the outflow flow path tube 220 and the thermal expansion rate of the connection member 121a are different. Therefore, when heat moves between the secondary refrigerant or the like and the outflow flow path tube 220 and the connection member 121a, a gap sometimes occurs between the outflow flow path tube 220 and the connection member 121a. Specifically, the thermal expansion rate of the outflow flow path tube 220 is larger than the thermal expansion rate of the connection member 121a. Therefore, when the outflow flow path tube 220 and the connection member 121a are heated by the secondary refrigerant or the like, a gap sometimes occurs between the inner peripheral surface of the outflow flow path tube 220 and the outer peripheral surface of the connection member 121a.

[0074] The connecting member 121a is inserted into the flow path tube space at one end of the outflow flow path tube 220. In addition, the connecting member 33a is inserted into the flow path tube space at the other end of the outflow flow path tube 220. In the embodiment, the length of the outflow flow path tube 220 is shorter than the length of the inflow flow path tube 210. In addition, the outflow flow path tube 220 does not have a folded-back portion. In other words, the secondary refrigerant flows in one direction in the flow path tube space of the outflow flow path tube 220.

[0075] One of the four clamping members 300 is disposed on the outer peripheral surface of one end of the outflow flow path tube 220. In addition, one of the four clamping members 300 is disposed on the outer peripheral surface of the other end of the outflow flow path tube 220.

[0076] At least a part of the inflow flow path tube 210 and at least a part of the outflow flow path tube 220 overlap in the X direction. Specifically, when the inflow flow path tube 210 attempts to move in the X direction, the inflow flow path tube 210 contacts the outflow flow path tube 220. As a result, the movement of the inflow flow path tube 210 in the X direction and the movement of the outflow flow path tube 220 in the X direction can be suppressed.

[0077] Specifically, the outflow flow path tube 220 is disposed at a position closer to the X direction side than the inflow flow path tube 210. Specifically, when the inflow flow path tube 210 attempts to move to the X direction side, the inflow flow path tube 210 contacts the outflow flow path tube 220. As a result, the movement of the inflow flow path tube 210 having the folded-back portion R to the X direction side can be suppressed. In addition, the length of the inflow flow path tube 210 is longer than the length of the outflow flow path tube 220 and also has a folded-back portion R, so it is easy to move, but the movement to the X direction side can be suppressed.

[0078] The spring portion 321 of the clamping member 300 disposed on the inflow flow path tube 210 is disposed at a position separated from the outflow flow path tube 220. Specifically, the spring portion 321 of the clamping member 300 disposed on the outer peripheral surface of one end of the inflow flow path tube 210 is disposed at a position on the other side in the Z direction than the inflow flow path tube 210. In addition, the spring portion 321 of the clamping member 300 disposed on the outer peripheral surface of the other end of the inflow flow path tube 210 is disposed at a position on the other side in the X direction than the inflow flow path tube 210. As a result, damage caused by contact between the spring portion 321 and the outflow flow path tube 220 can be suppressed.

[0079] In addition, the spring portion 321 of the clamping member 300 disposed in the outflow flow path tube 220 is disposed at a position separated from the inflow flow path tube 210. Specifically, the spring portion 321 of the clamping member 300 disposed on the outer peripheral surface of one end portion of the outflow flow path tube 220 is disposed at a position on the Z-direction side with respect to the outflow flow path tube 220. In addition, the spring portion 321 of the clamping member 300 disposed on the outer peripheral surface of the other end portion of the outflow flow path tube 220 is disposed at a position on the X-direction side with respect to the outflow flow path tube 220. As a result, breakage due to contact between the spring portion 321 and the inflow flow path tube 210 can be suppressed.

[0080] In addition, for ease of understanding of the present disclosure, the drawings schematically show each structural element as the main body, and for ease of drawing, the thickness, length, number, interval, etc. of each structural element shown in the drawings may sometimes be different from the actual ones. In addition, the structure of each structural element shown in the above-described embodiment is an example and is not particularly limited, and it is self-evident that various changes can be made without substantially departing from the effects of the present disclosure. In addition, the shape of the belt portion 310 in the embodiment is an annular shape in which a part of an arc overlaps, but is not limited thereto. The shape of the belt portion 310 may also be an annular shape with a notch in a part. Figure 6 It is an external perspective view of another example of the clamping member 1300. One end portion 311 of the belt portion 310 faces the other end portion 312 of the belt portion 310. One end portion of the inflow flow path tube 210 is inserted into the space of the belt portion 310. The belt portion 310 has elasticity. Specifically, the belt portion 310 is a thin metal. Therefore, the interval LL between the one end portion 311 and the other end portion 312 can change. In other words, the inner diameter of the belt portion 310 can change.

[0081] In addition, the present technology can adopt the following structure.

[0082] (1) A flow path member used in a medium circulation device that circulates a medium, comprising: A flow path tube having a flow path space inside for the medium to flow through; A connection member having a connection member space inside for the medium to flow through, and at least a part of the connection member being disposed in the flow path space; and A clamping member disposed on the outer peripheral surface of the flow path tube, The thermal expansion rate of the flow path tube is different from the thermal expansion rate of the connection member, The clamping member includes: A belt portion that surrounds the outer peripheral surface of the flow path tube at a position where the flow path tube and the connection member overlap in the radial direction; and An acting part that changes the size of the inner diameter of the belt part in a manner that matches a change in the size of at least one of the outer diameter of the flow path tube, the inner diameter of the flow path tube, and the outer diameter of the connecting member.

[0083] (2) Based on the flow path member described in (1), the flow path tube includes: An inflow flow path tube that allows the medium to flow into the medium circulation device; and An outflow flow path tube that allows the medium to flow out of the medium circulation device, At least a part of the inflow flow path tube overlaps with at least a part of the outflow flow path tube in the first direction, One side of the first direction represents the direction away from the medium circulation device.

[0084] (3) Based on the flow path member described in (2), the connecting member includes: A first connecting member; and A second connecting member different from the first connecting member, One of the inflow flow path tube and the outflow flow path tube further includes: a first part where one end side of the flow path tube overlaps with the first connecting member; a second part where the other end side of the flow path tube overlaps with the second connecting member; and a turning part that connects the first part and the second part, The turning part is disposed on the other side of the second direction of the first connecting member and the other side of the second direction of the second connecting member, The other of the inflow flow path tube and the outflow flow path tube is disposed at a position closer to the first direction side than one of the inflow flow path tube and the outflow flow path tube, The second direction intersects the first direction.

[0085] (4) Based on the flow path member described in (3), the length in the second direction from one end of one of the inflow flow path tube and the outflow flow path tube to the end on the other side of the second direction of the turning part is shorter than twice the length in the second direction of the first part or the second part.

[0086] (5) Based on the flow path member described in any one of (1) to (4), the material of the flow path tube is a synthetic resin.

[0087] (6) Based on the flow path member described in any one of (1) to (5), the material of the connecting member is a metal.

[0088] (7) Based on the flow path member described in (2), the acting part includes a spring part.

[0089] (8) Based on the flow path member described in (7), the spring portion of the clamping member disposed on one of the inflow flow path tube and the outflow flow path tube is disposed at a position separated from the other of the inflow flow path tube and the outflow flow path tube. [Industrial Applicability]

[0090] The flow path member of the present disclosure has industrial applicability. (Symbol Explanation)

[0091] 100 Cooling system 1 CDU 9 Rack 15 Housing 151 - 156 Plates 111a Connecting member 300 Clamping member 310 Belt portion 320 Spring portion (acting portion).

Claims

1. A flow path member, The flow path member is used in a medium circulation device that circulates a medium, and is characterized in that, comprising: a flow path tube having a flow path tube space inside for the medium to flow through; a connection member having a connection member space inside for the medium to flow through, and at least a part of the connection member being disposed in the flow path tube space; and a clamping member disposed on the outer peripheral surface of the flow path tube, wherein the thermal expansion rate of the flow path tube is different from that of the connection member, and the clamping member comprises: a belt portion that surrounds the outer peripheral surface of the flow path tube at a position where the flow path tube and the connection member overlap in the radial direction; and an acting portion that changes the size of the inner diameter of the belt portion in a manner matching the change in the size of at least one of the outer diameter of the flow path tube, the inner diameter of the flow path tube, and the outer diameter of the connection member.

2. The flow path member according to claim 1, wherein the flow path tube comprises: an inflow flow path tube for allowing the medium to flow into the medium circulation device; and an outflow flow path tube for allowing the medium to flow out of the medium circulation device, at least a part of the inflow flow path tube overlaps at least a part of the outflow flow path tube in a first direction, wherein one side of the first direction represents the direction away from the medium circulation device.

3. The flow path member according to claim 2, wherein the connection member comprises: a first connection member; and a second connection member different from the first connection member, wherein one of the inflow flow path tube and the outflow flow path tube further comprises: a first part where one end side of the flow path tube overlaps with the first connection member; a second part where the other end side of the flow path tube overlaps with the second connection member; and a turning-back part connecting the first part and the second part, the turning-back part being disposed on the other side of the first connection member and the other side of the second connection member in a second direction, the other of the inflow flow path tube and the outflow flow path tube being disposed at a position closer to the first direction side than one of the inflow flow path tube and the outflow flow path tube, wherein the second direction intersects the first direction.

4. The flow path member according to claim 3, wherein the length in the second direction from one end of one of the inflow flow path tube and the outflow flow path tube to the end on the other side of the turning-back part in the second direction is shorter than twice the length in the second direction of the first part or the second part.

5. The flow path member according to claim 1, wherein the material of the flow path tube is synthetic resin.

6. The flow path member according to claim 1, wherein the material of the connection member is metal.

7. The flow path member according to claim 2, wherein the acting portion comprises a spring portion.

8. The flow path member according to claim 7, wherein The spring portion of the clamping member disposed on one of the inflow channel pipe and the outflow channel pipe is disposed at a position separated from the other of the inflow channel pipe and the outflow channel pipe.

Images