Coupling device and refrigerant circulation device

Abstract

This coupler device is provided with a first connection part, a second connection part, a pipe material, and a sealing material. The first connecting part can be connected to an external socket or plug and is provided with a first flow path through which fluid flows. The second connection part has: a first inner surface that partitions a second flow path that is continuous with the first flow path; and a first outer surface that is positioned further outward than the first inner surface. The pipe has an end portion inserted into the second connection portion and a second inner surface located outside the first outer surface and defining a third flow path. A sealing material is interposed between the first outer surface and the second inner surface.

Description

Technical Field

[0001] The present disclosure relates to a coupling device and a refrigerant cycle device. Background Art

[0002] The coupling device includes a flow tube having a flow path and an adapter assembly. An end of the flow tube is connected to the adapter assembly (for example, see Patent Document 1). [Prior art literature] [Patent Document]

[0003] Patent Document 1: Specification of Chinese Invention Patent No. 113970026 Summary of the invention

[0004] In the coupling device, there is a difference between the thermal expansion coefficient of the flow tube and the thermal expansion coefficient of the adapter assembly in most cases. This difference in thermal expansion coefficient may cause fluid to leak between the flow tube and the adapter assembly during expansion or contraction.

[0005] An object of the present disclosure is to provide a coupling device and a refrigerant cycle device capable of suppressing leakage of a fluid.

[0006] A connector device according to an exemplary aspect of the present disclosure includes a first connection portion, a second connection portion, a pipe and a sealing material. The first connection portion can be connected to an external socket or plug and has a first flow path for fluid circulation. The second connection portion has: a first inner surface that divides a second flow path continuous with the first flow path; and a first outer surface that is located at a position further outward than the first inner surface. The pipe has an end portion inserted into the second connection portion and a second inner surface that is located outside the first outer surface and divides a third flow path. The sealing material is between the first outer surface and the second inner surface.

[0007] A refrigerant cycle device according to another exemplary aspect of the present disclosure includes a housing and a connector device. The housing includes a socket or a plug. The connector device includes a first connection portion, a second connection portion, a pipe, and a sealing material. The first connection portion is connected to the socket or the plug and has a first flow path for fluid circulation. The second connection portion includes: a first inner surface that divides a second flow path continuous with the first flow path; and a first outer surface that is located at a position further outward than the first inner surface. The pipe has an end portion inserted into the second connection portion and a second inner surface that is located outside the first outer surface and divides a third flow path. The sealing material is between the first outer surface and the second inner surface.

[0008] According to the present disclosure, it is possible to provide a coupling device and a refrigerant cycle device that can suppress leakage of a fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a diagram showing the structure of the cooling system 100 . Figure 2 It is shown Figure 1 A perspective view of the structure of the coupling devices 8, 9 is shown. Figure 3 It is shown Figure 1 An exploded perspective view of the structure of the coupling devices 8, 9 is shown. Figure 4 is shown along Figure 2 A cross-sectional view of the coupling devices 8, 9 along the line IV-IV in FIG. Figure 5 yes Figure 3 An enlarged view of the periphery of the connecting portion 82a is shown. (Explanation of symbols) 1Refrigeration cycle device 8, 9 connector device 81a, 81b connecting part (first connecting part) 811a, 811b flow path (first flow path) 823a, 823b flow path (second flow path) 821a, 821b inner surface (first inner surface) 822a, 822b outer surface (first outer surface) 82a, 82b connecting part (second connecting part) 83 pipe T83a, T83b end 831 inner surface (second inner surface) 832 flow path (third flow path) 84 Sealing material 824a, 824b recessed parts 85a, 85b fastening member DETAILED DESCRIPTION

[0010] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings. In addition, in the drawings, the same reference numerals are given to the same or corresponding parts, and the description thereof will not be repeated.

[0011] [Cooling system 100] exist Figure 1 In the cooling system 100, when in use, as components, there are a refrigerant cycle unit (hereinafter also referred to as "CDU") 1, a distribution manifold 2, a collection manifold 3, at least one cold plate 4, a cooling device 5, flow paths 6, 7, and connector devices 8, 9. At least one heat source 44 provided in the space A01 is cooled by the components.

[0012] 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. In this case, the coupling devices 8 and 9 directly connect the cold plate 4 and the CDU 1.

[0013] Among these components, the CDU 1, the distribution manifold 2, the collection manifold 3, and the cold plate 4 are installed in a space A01. The space A01 is, for example, a server room.

[0014] [Heat source 44, rack 200] A rack 200 is provided in the space A01. A plurality of heat sources 44 are stored in the rack 200, for example. Each heat source 44 is, for example, an electronic component or an electronic device. An electronic component is a component constituting 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 is operated and generates heat by power supply. The electronic device is a rack server or a blade server. In addition, the electronic device may also be a projector, a personal computer, or a display.

[0015] [CDU1] The CDU 1 can be circulated in the market as a component of the cooling system 100. When circulated as the cooling system 100, the cooling device 5 and the flow paths 6 and 7 can also be removed from the cooling system 100. The CDU 1 can also be circulated in the market alone. In the present embodiment, the CDU 1 is stored in the rack 200 when in use. However, this is not limited to this, and the CDU 1 can also be set outside the rack 200 when in use.

[0016] [Housing 11] The CDU 1 has a housing 11. The housing 11 includes an outer body and a frame, and the inner space of the CDU 1 is divided from the outer space of the CDU 1 by the outer body. The outer body is, for example, a plate or a shell for exterior use. The housing 11 has a primary inlet 11a, a primary outlet 11b, a secondary inlet 11c, and a secondary outlet 11d on the outer body. The secondary inlet 11c and the secondary outlet 11d are sockets or plugs, respectively, and are examples of "external sockets or plugs" in the present disclosure.

[0017] The low-temperature primary refrigerant C1 flows into the primary inlet 11a through the flow path 6. The secondary inlet 11c is connected to the connection portion 81a of the coupling device 8 (see Figure 2). The high-temperature secondary refrigerant C2 flows into the secondary inlet 11c from the coupling device 8. CDU1 performs heat exchange between the primary refrigerant C1 (low temperature) flowing into the CDU1 from the primary inlet 11a and the secondary refrigerant C2 (high temperature) flowing into the CDU1 from the secondary inlet 11c, through a heat exchanger (not shown) provided inside the CDU1. As a result, in the CDU1, the thermal energy of the primary refrigerant C1 is transferred to the secondary refrigerant C2. Specifically, the temperature of the secondary refrigerant C2 is lower when it flows out of the CDU1 than when it flows into the CDU1. The CDU1 presses the low-temperature secondary refrigerant C2 toward the secondary outlet 11d through a pump (not shown) provided inside the CDU1. The secondary outlet 11d is connected to the connection parts 81a, 81b of the coupling device 9 (refer to Figure 2 ) side. In addition, which one of the connection parts 81a and 81b is connected to the secondary outflow port 11d is determined by the specifications of the secondary outflow port 11d and the distribution manifold 2. The secondary refrigerant C2 flows out from the secondary outflow port 11d to the coupling device 9. The CDU1 sends the high-temperature primary refrigerant C1 from the primary outflow port 11b to the flow path 7.

[0018] [Primary refrigerant C1, secondary refrigerant C2] The primary refrigerant C1 is a fluid such as a coolant. Examples of the coolant include antifreeze or pure water. Typical examples of antifreeze are ethylene glycol aqueous solution or propylene glycol aqueous solution. The secondary refrigerant C2 is a fluid of the same type or a different type as the primary refrigerant C1. In addition, at least one of the primary refrigerant C1 and the secondary refrigerant C2 may be a gas refrigerant. The secondary refrigerant C2 is an example of a "fluid" in the present disclosure.

[0019] [Distribution Manifold 2] exist Figure 1 In the embodiment, 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 sake of convenience, only two separate flow paths 22 are shown. The secondary refrigerant C2 (i.e., fluid) can flow in the common flow path 21 and each separate flow path 22. One end T21 of the common flow path 21 is connected to the connection portion 81b of the coupling device 9 (see Figure 2 ) is connected to the distribution manifold 2 and is used as an inlet for the secondary refrigerant C2 in the distribution manifold 2. One end T22a of each individual flow path 22 is connected to the common flow path 21. The other end T22b of each individual flow path 22 is used as an outlet for the secondary refrigerant C2 in the distribution manifold 2 and is connected to the inlet 41 of the cold plate 4. Therefore, the secondary refrigerant C2 (low temperature) flowing into the inlet (i.e., one end T21) of the distribution manifold 2 first flows in the common flow path 21, is divided into each individual flow path 22, and then flows out from each outlet (i.e., the other end T22b) of the distribution manifold 2.

[0020] In addition, in each embodiment, unless there is an adverb or adjective verb to additionally explain "connect", the term "connect" means "connected so that fluids can communicate".

[0021] [Cold plate 4] exist Figure 1 In the embodiment, each cold plate 4 is in thermal contact with at least one heat source 44. The secondary refrigerant C2 (low temperature) flows inside each cold plate 4. In detail, each cold plate 4 is configured to be in direct thermal contact with the heat source 44. Each cold plate 4 may also be configured to be in thermal contact with the heat source 44, for example, via a heat conductive sheet (not shown). That is, the term "thermal contact" includes the meaning of "direct thermal contact" and the meaning of "indirect thermal contact".

[0022] Each cold plate 4 has an inlet 41, an outlet 42 and an internal flow path 43 for the secondary refrigerant C2. The internal flow path 43 connects the inlet 41 and the outlet 42. The secondary refrigerant C2 (low temperature) flows into the inlet 41 from the separate flow path 22 connected to the inlet 41. The secondary refrigerant C2 flows in the internal flow path 43 toward the outlet 42. Therefore, the heat energy generated by the heat source 44 moves to the secondary refrigerant C2 flowing in the internal flow path 43 of the cold plate 4 in thermal contact with the heat source 44. As a result, the heat source 44 is cooled and the temperature of the secondary refrigerant C2 rises. The secondary refrigerant C2 (high temperature) flows out from the outlet 42 to the separate flow path 31 of the collecting manifold 3.

[0023] [Collection Manifold 3] exist Figure 1 In the embodiment, the collecting manifold 3 has a plurality of individual flow paths 31 and a common flow path 32. Figure 1 In the figure, two separate flow paths 31 are shown for the sake of convenience. The secondary refrigerant C2 (i.e., fluid) can flow in each independent flow path 31 and the common flow path 32. One end T31a of each independent flow path 31 serves as an inlet for the fluid in the collecting manifold 3 and is connected to the outlet 42, respectively. The other end T31b of each independent flow path 31 is connected to the common flow path 32. One end T32 of the common flow path 32 is used as an outlet for the fluid in the collecting manifold 3 and is connected to the connection portion 81b of the coupling device 8 (see Figure 2 ) is connected. Therefore, the secondary refrigerant C2 flowing from the cold plate 4 into each inlet (i.e., one end T31a) of the collecting manifold 3 merges in the common flow path 32, and flows out from the one end T32 to the secondary inlet 11c of the CDU1. Therefore, the secondary refrigerant C2 circulates in the CDU1, the distribution manifold 2, the cold plate 4, and the collecting manifold 3 in the order described.

[0024] [Cooling device 5] exist Figure 1In the embodiment, the cooling device 5 is, for example, arranged outside the space A01. In addition, the cooling device 5 can be arranged either indoors or outdoors. The cooling device 5 is, for example, a cooler or a cooling tower. The cooling device 5 includes an inlet 51, an outlet 52, an internal flow path 53, a cooling unit 54, and a pump 55 for the primary refrigerant C1. The internal flow path 53 connects the inlet 51 and the outlet 52. The cooling unit 54 and the pump 55 are respectively inserted into the internal flow path 53.

[0025] The primary refrigerant C1 flows into the inlet 51 through the flow path 7. The primary refrigerant C1 flows from the inlet 51 into the cooling section 54 through the internal flow path 53. The cooling section 54 cools the primary refrigerant C1 flowing into the cooling section 54. The cooling method in the cooling section 54 may be any of an air cooling method and a water cooling method. The primary refrigerant C1 flowing out of the cooling section 54 flows into the pump 55 through the internal flow path 53. The pump 55 presses the primary refrigerant C1 flowing into the pump 55 toward the outflow port 52. The primary refrigerant C1 flowing out of the outflow port 52 flows into the primary inlet 11a through the flow path 6. In addition, the flow paths 6 and 7 may also be the same structure as the coupling devices 8 and 9.

[0026] exist Figure 1 In the embodiment, the pump 55 is located between the cooling portion 54 and the outflow port 52 in the internal flow path 53. However, the present invention is not limited thereto, and the pump 55 may be located between the outflow port 52 and the cooling portion 54 in the internal flow path 53.

[0027] [Connector devices 8, 9] Below, refer to Figures 1 to 5 , the connector devices 8 and 9 are described in detail.

[0028] exist Figure 1 In the embodiment, the coupling device 8 connects the secondary flow inlet 11c of the housing 11 and one end T32 of the collecting manifold 3. The coupling device 9 connects the secondary flow outlet 11d of the housing 11 and one end T21 of the distribution manifold 2. Figures 2 to 5 As shown, the coupling devices 8 and 9 are substantially the same in structure. In addition, the coupling devices 8 and 9 may be completely the same or completely different in structure.

[0029] like Figures 2 to 5 As shown, the coupling devices 8 and 9 each include two couplings C5 and C6 , a pipe 83 and a sealing material 84 .

[0030] Each coupler C5 has a connection portion 81a, 82a. That is, each coupler device 8, 9 includes a connection portion 81a, 82a, a pipe 83, and a sealing material 84. The connection portion 81a is a first example of a "first connection portion" of the present disclosure, and the connection portion 82a is a first example of a "second connection portion" of the present disclosure. In addition, each coupler C5, C6 is made of resin or metal, for example.

[0031] Each connection portion 81a can be connected to the secondary inlet 11c or the secondary outlet 11d (see Figure 1 In other words, the connection portion 81a can be connected to the secondary inlet 11c or the secondary outlet 11d located outside the coupling device 8, 9.

[0032] The connecting portion 81a has a flow path 811a through which the secondary refrigerant C2 flows. The flow path 811a is a first example of a “first flow path” in the present disclosure.

[0033] The secondary inlet 11c and the secondary outlet 11d (see Figure 1 ) are sockets or plugs. The connection portion 81a is connected to the housing 11 (see Figure 1 ) side of the socket or plug is paired with a plug or socket. That is, the connecting portion 81a is connected to the socket or plug on the housing 11 side.

[0034] The flow path 811a passes through the two end surfaces T81a and T81b of the connection portion 81. In the flow path 811a, in the cooling system 100 (refer to Figure 1 ) in the usage state, the secondary refrigerant C2 can circulate.

[0035] In addition, each connector C5 may also be provided with a valve for opening and closing the flow path 811a on the flow path 811a of the connection portion 81a. In addition, each connector C5 has a loading and unloading mechanism (not shown) based on a latch (button or operating lever) at the connection portion 81a. The loading and unloading mechanism is a mechanism for immediately removing the connection portion 81a from the socket or plug on the housing 11 side when the latch is operated by the operator. In addition, the connector C6 may also have the same valve and loading and unloading mechanism as the connector C5.

[0036] The connection portion 82a protrudes from the end surface T81b of the connection portion 81a in the first direction D01. That is, the first direction D01 is a direction in which the connection portion 82a protrudes relative to the connection portion 81a. The end portion T83a of the pipe 83 can be connected to the connection portion 82a.

[0037] The connection portion 82a is cylindrical and has an inner surface 821a and an outer surface 822a. The inner surface 821a and the outer surface 822a are first examples of the "first inner surface" and the "first outer surface" of the present disclosure.

[0038] The inner surface 821a divides the flow path 823a continuous with the flow path 811a. The flow path 823a extends along the first direction D01 between the two ends T82a and T82b of the connecting portion 82. The end of the flow path 823 in the first direction D01 becomes an opening A82a open in the direction. In addition, the flow path 823a is a first example of the "second flow path" disclosed in the present invention.

[0039] In addition, in this embodiment, the inner surface 821a is a cylindrical surface. The cylindrical surface can be formed by rotating one of two parallel line segments with the other line segment as an axis. When the inner surface 821a is a cylindrical surface, the fluid flows smoothly in the flow path 823a. In addition, the shape of the inner surface 821a is not limited to a cylindrical surface, and can also be other shapes.

[0040] The outer surface 822a is located outside the inner surface 821a. Specifically, the outer surface 822a is located closer to the radial direction D02 of the first direction D01 than the inner surface 821a (see Figure 5 In other words, the outer surface 822a is located outside the inner surface 821a and along the circumferential direction D03 (refer to Figure 5 ) extension.

[0041] Each coupler C6 has a connection portion 81b, 82b. In addition, in the present embodiment, the connection portions 81b, 82b have shapes different from the connection portions 81a, 82a, respectively. In addition, the connection portions 81b, 82b may also have the same shape as the connection portions 81a, 82a, respectively. That is, each coupler device 8, 9 includes a connection portion 81b, 82b, a pipe 83, and a sealing material 84. The connection portion 81b is a second example of the "first connection portion" of the present disclosure, and the connection portion 82b is a second example of the "second connection portion" of the present disclosure.

[0042] Each connection portion 81b can be connected to one end T32 of the collection manifold 3 or one end T21 of the distribution manifold 2 (see Figure 1 In other words, the connection portion 81b can be connected to an end T32, T21 located outside the coupling device 8, 9.

[0043] The connecting portion 81b has a flow path 811b through which the secondary refrigerant C2 flows. The flow path 811b is a second example of the “first flow path” in the present disclosure.

[0044] One end T32 of the collection manifold 3 or one end T21 of the distribution manifold 2 is a socket or a plug. The connection part 81b is a plug or a socket that pairs with the socket or plug on the collection manifold 3 side. In addition, the connection part 81b is a plug or a socket that pairs with the socket or plug on the distribution manifold 2 side.

[0045] The flow path 811b passes through the two end surfaces T81c and T81d of the connecting portion 81b. Figure 1 ) in the usage state, the secondary refrigerant C2 can circulate.

[0046] The connection portion 82b protrudes from the end surface T81d of the connection portion 81b in the second direction D04. The second direction D04 is a direction in which the connection portion 82b protrudes relative to the connection portion 81b. The end portion T83b of the pipe 83 can be connected to the connection portion 82b.

[0047] The connection portion 82b is cylindrical and has an inner surface 821b and an outer surface 822b. The inner surface 821b and the outer surface 822b are second examples of the "first inner surface" and the "first outer surface" of the present disclosure.

[0048] The inner surface 821b divides the flow path 823b that is continuous with the flow path 811b. The flow path 823b extends along the second direction D04 between the two ends T82c and T82d of the connecting portion 82b. The end of the flow path 823 in the second direction D04 becomes an opening A82b that is open in the direction. In addition, the flow path 823b is a second example of the "second flow path" disclosed in the present invention.

[0049] In addition, in the embodiment, similar to the inner surface 821a, the inner surface 821b may be a cylindrical surface or other shapes.

[0050] The outer surface 822b is located outside the inner surface 821b. Specifically, the outer surface 822b is located closer to the radial direction D05 of the second direction D04 than the inner surface 821b (see Figure 4 In other words, the outer surface 822b is located outside the inner surface 821b and along the circumferential direction D06 (refer to Figure 4 ) extension.

[0051] The pipe 83 is a so-called tube or pipe, and is made of resin in this embodiment. The resin may be any of natural resin and synthetic resin. In addition, the pipe 83 may be made of a material having a different thermal expansion coefficient from the connecting parts 82a and 82b.

[0052] The pipe 83 has end portions T83a and T83b inserted into the connection portions 82a and 82b, respectively. The pipe 83 has an inner surface 831. The inner surface 831 is located outside the outer surfaces 822a and 822b. In detail, when the pipe 83 is inserted into the connection portions 82a and 82b, the inner surface 831 is located on the outer surfaces 822a and 822b. The inner surface 831 divides the flow path 832 of the secondary refrigerant C2. In addition, the inner surface 831 is an example of the "second inner surface" of the present disclosure. The flow path 832 is an example of the "third flow path" of the present disclosure.

[0053] In the present embodiment, when the pipe 83 is not inserted into the connection parts 82a and 82b, the inner surface 831 is, for example, a cylindrical surface.

[0054] The sealing material 84 is interposed between the outer surfaces 822a, 822b and the inner surface 831. The sealing material 84 suppresses the generation of a gap between the outer surfaces 822a, 822b and the inner surface 831. Specifically, the outer surfaces 822a, 822b and the inner surface 831 have different thermal expansion coefficients. The temperature of the secondary refrigerant C2 is Figure 1 ) during circulation in the cooling system 100. Therefore, in the absence of the sealing material 84, a gap sometimes occurs between the outer surfaces 822a, 822b and the inner surface 831 due to their respective expansion or contraction when the cooling system 100 is in use. However, in the present embodiment, since the sealing material 84 suppresses the generation of a gap between the outer surfaces 822a, 822b and the inner surface 831, leakage of the secondary refrigerant C2 from between the outer surfaces 822a, 822b and the inner surface 831 is suppressed. That is, the sealing material 84 seals the leakage of the secondary refrigerant C2.

[0055] In detail, considering the characteristics of the cooling system 100 , the sealing material 84 is a silicon sealant having excellent weather resistance, water resistance, and heat resistance.

[0056] In addition, the thermal expansion coefficient of the sealing material 84 is smaller than the thermal expansion coefficient of the outer surfaces 822a and 822b, and larger than the thermal expansion coefficient of the inner surface 831. As a result, the ratio of expansion or contraction of the sealing material 84 due to the ambient temperature is intermediate between the ratio of expansion or contraction of the outer surfaces 822a and 822b and the ratio of expansion or contraction of the inner surface 831. The leakage of the secondary refrigerant C2 from between the outer surfaces 822a and 822b and the inner surface 831 is suppressed.

[0057] like Figure 3 , Figure 4As shown, the sealing material 84 is separated from both ends in the first direction D01 of the outer surface 822a or both ends in the second direction D04 of the outer surface 822b. Therefore, during or after the insertion of the pipe 83 into the connecting portions 82a and 82b, the sealing material 84 is not likely to expose to the outside of the flow path 832 or the pipe 83.

[0058] As Figures 3 to 5 shown, the outer surfaces 822a and 822b each have a plurality of recesses 824a and 824b respectively. The sealing material 84 is located in the recesses 824a and 824b. Thereby, the sealing material 84 enters the recesses 824a and 824b and cures. Therefore, due to the anchoring effect, the pipe 83 and the connecting portions 82a and 82b are not likely to be misaligned with each other. That is, the situation where a gap is generated between the outer surfaces 822a and 822b and the inner surface 831 is suppressed. In addition, at least one recess 824a is sufficient on the outer surface 822a. The same applies to the number of recesses 824b.

[0059] The recesses 824a and 824b are formed over the entire circumference of the outer surfaces 822a and 822b. In other words, the recesses 824a and 824b are formed in the entire regions in the circumferential directions D03 and D06 of the outer surfaces 822a and 822b. Thereby, since the anchoring effect is relatively large, the generation of a gap between the outer surfaces 822a and 822b and the inner surface 831 can be further suppressed.

[0060] The plurality of recesses 824a and 824b are formed into a shape that facilitates the installation of the pipe 83 on the connecting portions 82a and 82b, that is, formed into a shape of an expansion tube (Japanese: バルジ管) or a bamboo shoot shape. Specifically, in each of the plurality of recesses 824a, the bamboo shoot shape is a conical shape in which the dimension in the radial direction D02 of the recess 824a gradually decreases as it faces the first direction D01 (i.e., the protruding direction of the connecting portion 82a). On the outer surface 822a, the plurality of recesses 824a having the bamboo shoot shape are arranged in the first direction D01. The details of the bamboo shoot shape also apply to the plurality of recesses 824b.

[0061] As Figure 4 shown, in the plurality of recesses 824b, the recess 824b at the end in the second direction D04 may not have the sealing material 84. Or, in the recess 824b at the end, there may be only a small amount of the sealing material 84 compared to the other recesses 824b. In addition, in this regard, the same applies to the plurality of recesses 824a.

[0062] The ends T83a and T83b of the pipe 83 are elastic. As a result, the ends T83a and T83b are in close contact with the sealing material 84, so it is possible to further suppress leakage of the secondary refrigerant C2 from between the outer surfaces 822a and 822b and the inner surface 831. Specifically, the elastic modulus (i.e., a physical property value showing the degree of difficulty in deformation) of the ends T83a and T83b is smaller than the elastic modulus of each of the sealing material 84 and the connecting parts 82a and 82b.

[0063] like Figures 2 to 5 As shown, the connector devices 8 and 9 also have fastening members 85a and 85b. The fastening members 85a and 85b fasten the pipe 83 to the connecting parts 82a and 82b. Therefore, the pipe 83 is not easy to fall off from the connecting parts 82a and 82b. As a result, it is possible to further suppress the leakage of the secondary refrigerant C2 from between the outer surfaces 822a and 822b and the inner surface 831. The fastening members 85a and 85b are, for example, metal belts with fastening accessories. However, this is not limited to the above, and the fastening members 85a and 85b may also be resin belts with fasteners. In addition, as each of the fastening members 85a and 85b, a binding belt, a rubber belt or a rope may also be used.

[0064] The fastening members 85a and 85b are located outside the sealing material 84. As a result, the end portions T83a and T83b are in close contact with the sealing material 84, and the sealing material 84 is in close contact with the connecting portions 82a and 82b. Therefore, leakage of the secondary refrigerant C2 from between the outer surfaces 822a and 822b and the inner surface 831 is further suppressed. Specifically, the fastening members 85a and 85b are located outside the sealing material 84 in radial directions D02 and D05 (see Figure 4 and Figure 5 ) and fasten the pipe 83 to the connecting parts 82a, 82b at the outer side thereof.

[0065] like Figure 5 As shown, the fastening member 85a is located at a position outside the recessed portion 824a. As a result, the end portions T83a and T83b are in close contact with the sealing material 84, and the sealing material 84 is in close contact with the connecting portions 82a and 82b. Therefore, leakage of the secondary refrigerant C2 from between the outer surfaces 822a and 822b and the inner surface 831 is further suppressed. In detail, the fastening member 85a is located outside the recessed portion 824a in the radial direction D02. The thermal expansion coefficient of the inner surface 831 is greater than the thermal expansion coefficient of the outer surfaces 822a and 822b. As a result, the ratio of the expansion of the inner surface 831 due to the ambient temperature is greater than the ratio of the expansion of the outer surfaces 822a and 822b. Therefore, when expanding, the inner surface 831 is pressed by the outer surfaces 822a and 822b through the fastening members 85a and 85b, thereby suppressing the leakage of the secondary refrigerant C2 from between the outer surfaces 822a and 822b and the inner surface 831.

[0066] The embodiments of the present disclosure are described above with reference to the accompanying drawings. However, the present disclosure is not limited to the above embodiments and can be implemented in various ways without departing from the scope of the present invention. In addition, the multiple components disclosed in the above embodiments can be appropriately changed. For example, a component of all the components shown in a certain embodiment can be added to the components of another embodiment, or several components of all the components shown in a certain embodiment can be deleted from the embodiment.

[0067] In addition, in order to facilitate the understanding of the present disclosure, the drawings are schematically shown with each component as the main body. For the convenience of making the drawings, the thickness, length, number, spacing, etc. of each component shown in the drawings are sometimes different from the actual ones. In addition, the structure of each component shown in the above embodiment is an example and is not particularly limited. Various changes can be made within the scope that does not substantially deviate from the effect of the present disclosure.

[0068] [Note] In addition, the present technology can also adopt the following structures.

[0069] (1) A connector device comprising: A first connection portion, which can be connected to an external socket or plug and has a first flow path for fluid to flow; a second connecting portion having a first inner surface that divides a second flow path continuous with the first flow path and a first outer surface located outside the first inner surface; a pipe having an end portion inserted into the second connection portion and a second inner surface located outside the first outer surface and defining a third flow path; and A sealing material is interposed between the first outer surface and the second inner surface.

[0070] (2) In the connector device described in (1), a thermal expansion coefficient of the sealing material is smaller than a thermal expansion coefficient of the first outer surface and larger than a thermal expansion coefficient of the second inner surface.

[0071] (3) In the coupling device described in (1) or (2), the sealing material is separated from both ends of the first outer surface.

[0072] (4) In the coupling device described in any one of (1) to (3), the first outer surface has a recessed portion, The sealing material is located in the recess.

[0073] (5) In the coupling device described in (4), the recessed portion is formed over the entire circumference of the first outer surface.

[0074] (6) In the coupling device described in any one of (1) to (5), the end portion of the pipe has elasticity.

[0075] (7) In the coupling device described in any one of (1) to (6), there is provided: a fastening member that fastens the pipe to the second connecting portion.

[0076] (8) In the coupling device described in any one of (1) to (7), the fastening member is located outside the sealing material.

[0077] (9) In the coupling device described in any one of (1) to (8), the first outer surface has a recessed portion, The fastening member is located outside the recessed portion.

[0078] (10) In the coupler device described in any one of (1) to (9), the thermal expansion coefficient of the second inner surface is equal to or greater than the thermal expansion coefficient of the first outer surface.

[0079] (11) A refrigerant cycle device comprising: a housing having a socket or a plug; and Connector device, The connector device comprises: A first connecting portion, connected to the socket or the plug, having a first flow path for fluid to flow; a second connecting portion having a first inner surface that divides a second flow path continuous with the first flow path and a first outer surface located outside the first inner surface; a pipe having an end portion inserted into the second connection portion and a second inner surface located outside the first outer surface and defining a third flow path; and A sealing material is interposed between the first outer surface and the second inner surface.

Claims

1. A connector device, characterized in that: have: A first connection portion, which can be connected to an external socket or plug and has a first flow path for fluid to flow; a second connection portion having a first inner surface that divides a second flow path continuous with the first flow path and a first outer surface located outside the first inner surface; a pipe having an end portion inserted into the second connection portion and a second inner surface located outside the first outer surface and dividing a third flow path; as well as A sealing material is disposed between the first outer surface and the second inner surface.

2. The coupling device according to claim 1, characterized in that The thermal expansion coefficient of the sealing material is smaller than the thermal expansion coefficient of the first outer surface and larger than the thermal expansion coefficient of the second inner surface.

3. The coupling device according to claim 1 or 2, characterized in that: The sealing material is separated from both ends of the first outer surface.

4. The coupling device according to claim 1 or 2, characterized in that: The first outer surface has a recessed portion, The sealing material is located in the recessed portion.

5. The coupling device according to claim 4, characterized in that The recessed portion is formed over the entire circumference of the first outer surface.

6. The coupling device according to claim 1 or 2, characterized in that: The end portion of the tube is elastic.

7. The coupling device according to claim 1 or 2, characterized in that: A fastening member is provided for fastening the pipe to the second connection portion.

8. The coupling device according to claim 7, characterized in that The fastening member is located outside the sealing material.

9. The coupling device according to claim 7, characterized in that The first outer surface has a recessed portion, The fastening member is located outside the recessed portion.

10. The coupling device according to claim 7, characterized in that The thermal expansion coefficient of the second inner surface is greater than or equal to the thermal expansion coefficient of the first outer surface.

11. A refrigerant cycle device, characterized in that: have: a housing having a socket or a plug; and Connector device, The connector device comprises: a first connection portion, the first connection portion being connected to the socket or the plug and having a first flow path for fluid to flow; a second connection portion having a first inner surface that divides a second flow path continuous with the first flow path and a first outer surface located outside the first inner surface; a pipe having an end portion inserted into the second connecting portion and a second inner surface located outside the first outer surface and dividing a third flow path; as well as A sealing material is disposed between the first outer surface and the second inner surface.

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