Background

[0001] In modern electronic systems, a relatively large amount of heat is generated due to operation of electronic devices in such systems. Various approaches have been used for cooling electronic devices of systems.

[0002] Traditionally, air flow generators, such as fans, are provided within a system to generate air flow for cooling electronic devices in the system. However, as operating speeds of electronic devices, such as microprocessors, have dramatically increased, the use of just air flow cooling techniques have generally not been sufficient for cooling electronic devices of certain types of systems, such as high-end computer servers, storage systems, or communications systems.

[0003] Enhanced cooling can be provided by provision of fluid pipes inside the chassis of a system, where the fluid pipes are used for carrying a cooling fluid. The challenge of employing fluid pipes within a system is that the fluid pipes may have to be routed to many different points inside the system. The presence of such pipes may make it difficult to access certain components in the system, such as to perform repair or replacement tasks. Also, during servicing, possible leakage of fluids from fluid pipes is also an issue when a component is disconnected and removed from the system.

Brief Description Of The Drawings

[0004] Some embodiments of the invention are described, by way of example, with respect to the following figures:

Fig. 1 is a front view of an exemplary system having rigid and flexible fluid pipes that are connected by quick-connect mechanisms, in accordance with some embodiments;

Fig. 2 is a schematic diagram of portions of a flexible fluid pipe and a rigid fluid pipe, and associated connection elements that are part of a quick-connect mechanism, according to an embodiment; Fig. 3 is a perspective view of the connection elements of a quick-connect mechanism in a separated position, wherein the quick-connect mechanism is used to connect a flexible fluid pipe and a rigid fluid pipe according to an embodiment;

Fig. 4 is an enlarged perspective view of a portion of the system of Fig. 1 that incorporates an embodiment; and

Fig. 5 is a rear view of the system of Fig. 1.

Detailed Description

[0005] Fig. 1 is a front view of an exemplary system that includes housing (or outer chassis) 100 (note that portions of the housing 100 have been omitted to enable depiction of components within the housing) for containing the components of the system. The "housing" can be formed of multiple segments attached or otherwise connected together to define an inner space or chamber for containing the system components, or alternatively, the housing can be formed of segments integrally connected together.

[0006] The system depicted in Fig. 1 can be a computer system, a storage system, a communications system, and so forth. Certain of the components within the system produce heat during operation. Some of the components produce more heat than other components. An example of a component that produces a relatively elevated amount of heat during operation is a microprocessor.

[0007] In the ensuing discussion, reference is also made to Figs. 4 and 5, which depict perspective views and rear views, respectively, of the system.

[0008] Fig. 1 illustrates a heat-generating assembly 102, which includes a heat sink 104 and an electronic device 106 (e.g., a microprocessor or other type of electronic device) thermally attached to the heat sink 104. In the example depicted in Fig. 1, the heat-generating assembly 102 is mounted in the system on mounting brackets 160 and 162. A heat sink is formed of a thermally conductive material, such as metal (e.g., copper or other metal of relatively high thermal conductivity), that conducts heat away from the electronic device 106 during operation of the electronic device 106. The heat sink 104 includes internal fluid passages (not shown in Fig. 1) for carrying a cooling fluid. A flow of cooling fluid is induced in the fluid passages of the heat sink 104 to carry heat away from the heat sink. [0009] In accordance with some embodiments, rigid fluid pipes are fixedly mounted inside the housing 100 of the system. A "rigid" fluid pipe refers to a fluid pipe formed of a relatively sturdy material that would make bending of the fluid pipe relatively difficult. For example, the rigid fluid pipe can be formed of a metal or plastic material. A "pipe" can be a generally cylindrical conduit or can be any other type of conduit having other geometries (e.g., rectangular cross-section, square cross-section, etc.). The fluid pipe has an inner longitudinal bore enclosed by the wall of the pipe, where the inner longitudinal bore is used for carrying cooling fluid.

[0010] In the example depicted in Figs. 1, 4, and 5, rigid fluid pipes 108, 110, 111, 112, 114, and 115 are provided. An additional rigid fluid pipe 113 (not visible in Fig. 1) is depicted in Fig. 4, which is a perspective view of the system. The fixedly mounted, rigid fluid pipes 108, 110, 111, 112, 113, 114, and 115 are positioned according to a desired organization. The positions of the rigid fluid pipes can be arranged to allow for relatively easy access (insertion or removal) of certain components in the system, such as for purposes of repair or replacement. For example, the rigid fluid pipes can be positioned such that the heat-generating assembly 102 can be easily inserted or removed inside the housing 100. Being able to fix the positions of the rigid fluid pipes inside the housing 100 of the system enables a manufacturer to achieve better organization of components inside the housing.

[0011] The heat sink 104 of the heat-generating assembly 102 has various ports connected to respective flexible fluid pipes 118, 120, 122, 124, 126, and 128. A "flexible" fluid pipe is a pipe formed of a relatively soft elastic material that allows the flexible fluid pipe to be flexed or bent relatively easily. The ports of the heat sink 104 include input ports and output ports. An input port is to receive input cooling fluid for routing through the inner fluid passages of the heat sink 104, and the output ports are used for outputting heated cooling fluid for carrying such heated fluid away from the heat sink 104.

[0012] The flexible fluid pipes 118, 120, 122, 124, 126, and 128 are attached to the heat-generating assembly 102 such that the assembly 102 with the attached flexible fluid pipes can be mounted or dismounted from the system housing 100 as a unit. The flexible fluid pipes are easily manipulated by a user for ease of connection of the flexible fluid pipes to the corresponding rigid fluid pipes. [0013] A heat exchanger 130 is also provided in the system housing 100. The heat exchanger 130 also has internal fluid passages (not shown) that are connected to corresponding fluid pipes, including flexible fluid pipes 116 and 152 {see Figs. 1 and 4). The heat exchanger 130 has fins 150 over which air flow can be provided to carry heat away from the heat exchanger. As depicted in Fig. 4, fans 131 are provided as part of the heat exchanger 130 to generate the air flow to dissipate heat away from the heat fins 150. Heated cooling fluid from the heat sink 104 can be carried from output ports of the heat sink 104 to the heat exchanger 130 {e.g., through flexible fluid pipe 116), where air flow can remove heat from the heat exchanger 130. Fluid that is cooled due to passage through the heat exchanger 130 can then be returned back to the heat sink 104 {e.g., through flexible fluid pipe 152) for cooling the heat-generating assembly 102.

[0014] The flexible fluid pipes 116 and 152 connected to ports of the heat exchanger 130 are connected to respective rigid fluid pipes 111 and 113. Note that the heat exchanger 130 is another example of a heat-generating assembly that can be removably mounted in the system. The use of the flexible fluid pipes 116 and 152 attached to the heat exchanger 130 enables convenient connection of the heat exchanger 130 to the rigid pipes 111 and 113.

[0015] Fig. 1 also shows the rigid fluid pipes 108 and 115 connected to respective flexible fluid pipes 119 and 117, which are in turn connected to a manifold 121.

[0016] In accordance with some embodiments, quick-connect mechanisms 140 are provided for connecting each flexible fluid pipe to a corresponding rigid fluid pipe. The quick-connect mechanism 140 includes a first connection element attached to an end portion of the rigid fluid pipe, and a second connection element attached to an end portion of the corresponding flexible fluid pipe. The quick-connect mechanism has a sealing element to automatically provide a fluid seal when the first and second connection elements are disconnected. The sealing element can be in the form of a valve {e.g., a ball valve that is released from a sealing position when the first and second connection elements are connected, but that is allowed to move to a sealing position when the first and second connection elements are disconnected). The sealing elements of the quick-connect mechanisms allow for heat-generating assemblies to be disconnected from the rigid fluid pipes while reducing the likelihood of leaking cooling fluids. [0017] A quick-connect mechanism is a connection mechanism that enables relatively easy snap-on connection and snap-off disconnection such that a user can connect or disconnect components without the use of tools. The flexible fluid pipes further enhance convenience when connecting or disconnecting since the flexible fluid pipes are easily manipulated when connecting the flexible fluid pipes to corresponding rigid pipes using the quick-connect mechanisms.

[0018] Fig. 2 is a schematic diagram of a portion of a rigid fluid pipe 200 (which can be any of rigid fluid pipes depicted in Figs. 1, 4, and 5), and a portion of a flexible fluid pipe 202 (which can be any one of flexible fluid pipes in Figs. 1, 4, and 5). Fig. 2 also shows a quick-connect mechanism 140 for releasably connecting the fluid pipes 200 and 202. The quick-connect mechanism 140 includes a first connection element 204 (attached to the rigid fluid pipe 200) and a second connection element 206 (attached to the flexible fluid pipe 202). One of the first and second connection elements can be a female connection element, and the other of the first and second connection elements can be a male connection element. The first connection element 204 has a sealing element 208 that provides an automatic seal when the first and second connection elements 204 and 206 are disconnected. As noted above, the sealing element 208 can be a valve, such as a ball valve.

[0019] Fig. 3 is a perspective view of the quick-connect mechanism 140 with the first and second connection elements 204 and 206 separated from each other. The first connection element 204 has a receptacle 302 to receive a male element 300 of the second connection element 206. The first connection element 204 includes a fitting for sealingly attaching the first connection element 204 to a rigid fluid pipe. Similarly, the second connection element 206 has a fitting 304 for sealingly engaging a flexible fluid pipe.

[0020] In operation, a user mounts the heat-generating assembly (102 or 130 in Fig. 1, for example) into the system housing, with the first and second connection elements 204 and 206 disconnected. Once the heat-generating assembly is mounted, a user can manipulate each flexible fluid pipe to position the second connection element 206 such that the user can push the second connection element 206 into the first connection element 204 to provide a snap-on connection. [0021] In the disconnected position depicted in Fig. 3, the valve (208 in Fig. 2) inside the first connection element 204 is in a sealing position, such that any cooling fluid in the rigid fluid pipe does not leak from the first connection element 204. Once the male element 130 of the second connection element 206 is pushed into the receptacle 302 of the first connection element 204, the valve inside the first connection element 204 is actuated to an open position.

[0022] Although the first connection element 204 is depicted as a female connection element, and the second connection element 206 is depicted as a male connection element, an alternative embodiment can implement the reverse, with the first connection element 204 implemented as a male connection element, whereas the second connection element 206 is implemented as a female connection element.

[0023] By employing the cooling assembly including flexible fluid pipes, rigid fluid pipes, and quick-connect mechanisms, in accordance with some embodiments, a solution is provided to enable easy installation or removal of heat-generating assemblies from a system housing, and to provide leak resistance when connecting/disconnecting fluid pipes.

[0024] In the foregoing description, numerous details are set forth to provide an understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these details. While the invention has been disclosed with respect to a limited number of embodiments, those skilled in the art will appreciate numerous modifications and variations therefrom. It is intended that the appended claims cover such modifications and variations as fall within the true spirit and scope of the invention.