PATENT DOCUMENT

Publication Number: US-7539015-B2
Application Number: US-83121407-A
Country: US
Kind Code: B2

Title: Riser card housing

Abstract:
A housing for accommodating one or more riser cards is disclosed. The one or more riser cards include a first riser card. The first riser card may be configured to carry at least a first component. The housing may include a first inlet side configured to allow first air to flow into the housing for cooling the first component. The housing may also include an outlet side configured to allow at least a first portion of the first air to flow away from the housing. The housing may be configured to be disposed inside an enclosure of an electronic device. At least one of the first inlet side and the outlet side may include a first guiding structure configured to guide movement of the first riser card relative to the housing.

Claims:
1. A housing for accommodating one or more riser cards, the one or more riser cards including a first riser card, the first riser card configured to carry at least a first component, the housing comprising:
 a first side; 
 a second side, the one or more riser cards being configured to be disposed between the first side and the second side and configured to be disposed parallel to the first side and the second side; 
 a first inlet side configured to allow first air to flow into the housing for cooling the first component; 
 an outlet side configured to allow at least a first portion of the first air to flow away from the housing; and 
 an aerodynamic structure disposed inside the housing, the aerodynamic structure protruding from the first side and configured to direct the first air toward at least the first component, 
 wherein the housing is configured to be disposed inside an enclosure of an electronic device, and 
 at least one of the first inlet side and the outlet side includes a first guiding structure configured to guide movement of the first riser card relative to the housing. 
 
   
   
     2. The housing of  claim 1  further comprising a second inlet side configured to allow second air to flow into the housing for cooling the first component, the second inlet side being perpendicular to the first inlet side. 
   
   
     3. The housing of  claim 1  wherein the first guiding structure includes part of at least one of an inlet structure and an outlet structure. 
   
   
     4. The housing of  claim 1  wherein the first inlet side includes the first guiding structure, and the outlet side includes a second guiding structure configured to guide movement of the first riser card relative to the housing. 
   
   
     5. The housing of  claim 1  wherein the first guiding structure is further configured to secure the first riser card in place. 
   
   
     6. The housing of  claim 1  further comprising a fan disposed at one of the first inlet side and the outlet side. 
   
   
     7. The housing of  claim 1  further comprising an opening configured to allow the first riser card to protrude from the housing to connect to a circuit board. 
   
   
     8. The housing of  claim 7  wherein the opening is further configured to allow at least a second portion of the first air to cool at least an onboard component on the circuit board. 
   
   
     9. The housing of  claim 1  wherein the aerodynamic structure has a geometry that is configured for optimal cooling of the first component, the first component being configured to generate more heat than all other components carried by the first riser card. 
   
   
     10. The housing of  claim 1  wherein the aerodynamic structure represents a baffle configured to maximize a speed of the first air at the first component. 
   
   
     11. The housing of  claim 1  further comprising a flange disposed perpendicular to the second side, the flange being configured to confine one or more components external to the housing and configured to block the first air from the one or more components, the second side being configured to be disposed between the first riser card and the one or more components. 
   
   
     12. The housing of  claim 1  wherein the movement of the first rising card in a disengaging direction is limited by a lid of the enclosure of the electronic device. 
   
   
     13. The housing of  claim 1  wherein at least four sides of the housing form a tunnel between the first inlet side and the outlet side. 
   
   
     14. The housing of  claim 1  wherein the first component represents a memory module. 
   
   
     15. The housing of  claim 1  wherein the first side includes an opening disposed over the first riser card and configured to facilitate access to the first component. 
   
   
     16. An electronic device comprising:
 an enclosure; and 
 a housing disposed inside the enclosure and configured to accommodate at least a first riser card, the first riser card configured to carry at least a first component, the housing including at least a first side and a second side, the first riser card being configured to be disposed between the first side and the second side and configured to be disposed parallel to the first side and the second side, 
 wherein the housing further includes a first inlet side configured to allow first air to flow into the housing for cooling the first component and an outlet side configured to allow at least a first portion of the first air to flow away from the housing, and 
 at least one of the first inlet side and the outlet side includes a first guiding structure configured to guide movement of the first riser card relative to the housing. 
 
   
   
     17. The electronic device of  claim 16  wherein the housing further includes a second inlet side configured to allow second air to flow into the housing for cooling the first component, the second inlet side being perpendicular to the first inlet side. 
   
   
     18. The electronic device of  claim 16  wherein the first guiding structure includes part of at least one of an inlet structure and an outlet structure. 
   
   
     19. The electronic device of  claim 16  wherein the first inlet side includes the first guiding structure, and the outlet side includes a second guiding structure configured to guide movement of the first riser card when relative to the housing. 
   
   
     20. The electronic device of  claim 16  wherein the first guiding structure is further configured to secure the first riser card in place. 
   
   
     21. The electronic device of  claim 16  further comprising a fan disposed at one of the first inlet side and the outlet side. 
   
   
     22. The electronic device of  claim 16  wherein the housing further includes an opening configured to allow the first riser card to protrude from the housing to connect to a circuit board. 
   
   
     23. The electronic device of  claim 22  wherein the opening is further configured to allow at least a second portion of the first air to cool at least an onboard component on the circuit board. 
   
   
     24. The electronic device of  claim 16  wherein the housing further includes an aerodynamic structure disposed inside the housing, the aerodynamic structure protruding from the first side and configured to direct the first air toward at least the first component, the aerodynamic structure having a geometry that is configured for optimal cooling of the first component, the first component being configured to generate more heat than all other components carried by the first riser card. 
   
   
     25. The electronic device of  claim 24  wherein the aerodynamic structure represents a baffle configured to maximize a speed of the first air at the first component. 
   
   
     26. The electronic device of  claim 16  wherein the housing further includes a flange disposed perpendicular to the second side, the flange being configured to confine one or more components external to the housing and configured to block the first air from the one or more components, the second side being configured to be disposed between the first riser card and the one or more components. 
   
   
     27. The electronic device of  claim 16  further comprising a lid configured to limit the movement of the first rising card in a disengaging direction. 
   
   
     28. The electronic device of  claim 27  wherein the lid is further configured to guide the first air. 
   
   
     29. The electronic device of  claim 16  wherein at least four sides of the housing are formed of a single metal piece with same finishing as the enclosure, the four sides of the housing forming a tunnel between the first inlet side and the outlet side. 
   
   
     30. The electronic device of  claim 16  wherein the first component represents a memory module.

Description:
BACKGROUND OF THE INVENTION 
   An electronic device, such as a computer, may include one or more modular, serviceable, and/or replaceable components that may be added, serviced, and/or replaced for one or more purposes, such as repair or system upgrade. For example, a computer may include one or more memory modules, such as dual inline memory module (DIMM) that can be replaced for increasing the memory of the computer. 
   In general, the memory module may be directly installed on the motherboard of the computer. According to the onboard installation arrangement, the memory module may be blocked by other components and/or structures inside the enclosure of the computer. As a result, it may be inconvenient or even difficult for a user to install, remove, and/or replace the memory module. It also may be inconvenient or difficult for a user to add additional memory modules. 
   Many other heat-generating electronic components also may be installed on the motherboard. Generally, if temperatures of electronic components are not maintained within desirable temperature ranges, the performance and durability of the electronic components may be compromised. Given the concentration of heat-generating components, it may be difficult or costly to sufficiently cool the memory module as well as other components. 
   For example, for sufficient cooling, one or more fans of a high power may be required. Accordingly, additional material and manufacturing costs for the computer may be incurred. Further, there also may be additional energy consumption and noise associated with operating the computer. 
   SUMMARY OF INVENTION 
   An embodiment of the present invention relates to a housing for accommodating one or more riser cards. The one or more riser cards include a first riser card. The first riser card may be configured to carry at least a first component. The housing may include a first inlet side configured to allow first air to flow into the housing for cooling the first component. The housing may also include an outlet side configured to allow at least a first portion of the first air to flow away from the housing. The housing may be configured to be disposed inside an enclosure of an electronic device. At least one of the first inlet side and the outlet side may include a first guiding structure configured to guide movement of the first riser card relative to the housing. 
   The above summary relates to only one of the many embodiments of the invention disclosed herein and is not intended to limit the scope of the invention, which is set forth in the claims herein. These and other features of the present invention will be described in more detail below in the detailed description of the invention and in conjunction with the following figures. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The present invention is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar elements and in which: 
       FIG. 1A  illustrates a perspective view of an electronic device in accordance with one or more embodiments of the present invention. 
       FIG. 1B  illustrates an exploded view of the electronic device in accordance with one or more embodiments of the present invention. 
       FIG. 2  illustrates a perspective view of a riser card housing in accordance with one or more embodiments of the present invention. 
       FIG. 3  illustrates a perspective view of a riser card housing in accordance with one or more embodiments of the present invention. 
       FIG. 4  illustrates an exploded view of a riser card housing in accordance with one or more embodiments of the present invention. 
   

   DETAILED DESCRIPTION OF EMBODIMENTS 
   The present invention will now be described in detail with reference to a few embodiments thereof as illustrated in the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without some or all of these specific details. In other instances, well known process steps and/or structures have not been described in detail in order to not unnecessarily obscure the present invention. 
   One or more embodiments of the present invention relate to a housing configured to be disposed inside an enclosure of an electronic device for accommodating one or more riser cards. The one or more riser cards may include a first riser card. The first riser card may be configured to carry at least a first component, e.g., a memory module such as dual inline memory module (DIMM). The electronic device may represent, for example, one of a computing device (e.g., a computer), a networking device (e.g., a switch), an entertainment device (e.g., a television), etc. At least four sides of the housing may be formed of a single metal piece with same finishing as the enclosure. 
   The housing may include a first inlet side configured to allow first air to flow into the housing for cooling the first component and an outlet side configured to allow at least a first portion of the first air to flow away from the housing. At least one of the first inlet side and the outlet side may include a first guiding structure configured to guide movement of the first riser card relative to the housing. The first guiding structure may include part of at least one of an inlet structure and an outlet structure. The first guiding structure may be further configured to secure the first riser card in place. 
   In one or more embodiments, the first inlet side may include the first guiding structure, and the outlet side may include a second guiding structure also configured to guide movement of the first riser card relative to the housing. The housing may further include a second inlet side configured to allow second air to flow into the housing for cooling the first component. The second inlet side may be perpendicular to the first inlet side. The electronic device or the housing may further include a fan disposed at one of the first inlet side and the outlet side. 
   The housing may further include an opening configured to allow the first riser card to protrude from the housing to connect to a circuit board of the electronic device. The opening may be further configured to allow at least a second portion of the first air to cool at least an onboard component on the circuit board. The housing may further include another opening disposed over the first riser card and configured to facilitate access to the first component. 
   The housing may further include an aerodynamic structure, e.g., a baffle, configured to direct the first air toward at least the first component. Additionally or alternatively, the housing may further include an aerodynamic structure configured to maximize a speed of the first air at the first component. 
   The housing may further include a flange configured to confine one or more components external to the housing and to block the first air from the one or more components. 
   One or more embodiments of the present invention relate to an electronic device that includes the housing or a variation of the housing. 
   The electronic device may also include a lid configured to limit the movement of the first rising card in a disengaging direction. The lid may be further configured to guide the first air. 
   The features and advantages of the present invention may be better understood with reference to the figures and discussions that follow. 
     FIG. 1A  illustrates a perspective view of an electronic device  100  In accordance with one or more embodiments of the present invention. As illustrated in the example of  FIG. 1A , electronic device  100  may include enclosure  116  configured to accommodate various components inside electronic device  100 . Electronic device  100  may further include lid  117  that can be opened, such that the various components may be installed and/or accessed. 
     FIG. 1B  illustrates an exploded view of electronic device  100  in accordance with one or more embodiments of the present invention. In one or more embodiments, electronic device  100  may include a housing  102  configured to accommodate one or more riser cards, such as riser card  119  and riser card  106 . Each of the one or more riser cards may be configured to carry one or more components, such as memory modules  131  and  133 . 
   For example, memory module  131  may be installed on riser card  106 . In turn, riser card  119  may be inserted through opening  120  into housing  102 . Housing  102  may include another opening, which may be positioned opposite opening, such that connector  137  of riser card  106  may protrude from housing  102  to connect to circuit board  112  of electronic device  100 . 
   With the one or more components installed on the one or more riser cards, and with the riser cards installed inside housing  102 , housing  102  may be disposed, as one integrated module, inside enclosure  116  of electronic device  100 . Implementing housing  102  with pre-installed components (e.g., memory modules) as an integrated module may significantly simplify assembly of electronic device. As a result, the manufacturing cost of electronic device may be reduced. 
   After housing  102  has been disposed inside enclosure  116 , lid  117  may be installed to cover opening  181  of enclosure  116 . Lid  117  may be configured to limit movement of riser cards  119  and  106  in a disengaging direction  171 , such that riser cards  119  and  106  may be secured in place. Lid  117  may also be configured to cover opening  120  of housing  102  and/or to direct air flow in housing  102 . 
   Housing  102  may be disposed next to a heat sink  114  and may be connected with heat-sink cover  108 . An outer surface of heat-sink cover  108  and an outer surface of housing  102  may align. Housing  102  may include four sides  191 ,  192 ,  193 , and  194  formed of a single metal piece. Sides  191 - 194 , enclosure  116 , and heat-sink cover  108  may be formed of the same metal material and/or may have the same finishing. 
     FIG. 2  illustrates a perspective view of a riser card housing  200  in accordance with one or more embodiments of the present invention. Riser card housing  200  may include an inlet/outlet side  261  that includes a fan  263  configured for promoting air flow through riser card housing  200 . Inlet/outlet side  261  may include one or more inlet/outlet structure, such as inlet/outlet structures  281 ,  282 , and  283 , configured to guide/regulate the air flow. Each inlet/outlet structure may include one or more inlets/outlets. For example, inlet/outlet structures  281  may include inlet/outlet  267 . 
   At least a portion of the one or more inlet/outlet structures may form one or more guiding structures, such as guiding structures  202  and  204 , configured to facilitate insertion of one or more riser cards into riser card housing  200  and to guide movement of the one or more riser cards relative to riser card housing  200 . The one or more guiding structures may also be configured to secure the one or more riser cards in place, for example, through friction. 
   Riser card housing  200  may also include an inlet/outlet side  262  configured to allow air to flow into/away front riser card housing  200 . Inlet/outlet side  262  may include one or more inlets/outlets, such as inlet/outlet  206  and inlet/outlet  208 . 
   Riser card housing  200  may further include an additional inlet/outlet side  291 . Additional inlet/outlet side  291  may include one or more additional inlets/outlets, such as additional inlet/outlet  221 , configured to allow additional air to flow into riser card housing  200 . 
   In one or more embodiments, inlet/outlet side  261  may represent an outlet side. Accordingly, inlet/outlet side  262  may represent an inlet side, and additional inlet/outlet side  291  may represent a second inlet side. 
   In one or more embodiments, inlet/outlet side  261  may represent an inlet side. Accordingly, inlet/outlet side  262  may represent an outlet side, and additional inlet/outlet side  291  may represent a second outlet side. 
   On the outside of riser card housing  200 , riser card housing  200  may further include one or more flanges, such as flange  222 , configured to accommodate and confine one or more components, such as cable  223 , such that the one or more components are arranged in order. Flange  222  may be further configured to block air flow away from the one or more components, which may not require substantial cooling, such that the air flow may be effectively and efficiently utilized for cooling components carried by the one or more riser cards disposed inside rising card housing  200 . 
     FIG. 3  illustrates a perspective view of a riser card housing  300  in accordance with one or more embodiments of the present invention. Riser card housing  300  may include one or more inlet/outlet structures, such as inlet/outlet structures  381  and  382 , configured to regulate air flow into/away from riser card housing  300 . 
   At least a portion of the one or more inlet/outlet structures may form one or more guiding structures, such as guiding structures  302  and  304 , configured to guide movement of one or more riser cards relative to riser card housing  300 , to guide insertion of the one or more riser cards into riser card housing  300 , and/or to secure the one or more riser cards inside riser card housing  300 . 
   Riser card housing  300  may further include one or more aerodynamic structures, such as a baffle  335  or a shaped feature, for directing air flow toward one or more particular components carried by the one or more riser card. The one or more particular components may represent one or more electronic components that tend to generate a greater amount of heat than others. For example, the one or more particular components may represent one or more Advanced Memory Buffer (AMB) chips. The allocation and geometry of the one or more aerodynamic structures may be tuned and/or optimized for optimal cooling of the components disposed inside and/or outside riser card housing  300 . 
   Riser card housing  300  may further include opening  391  configured to allow air to flow out of riser card housing  300  to cool components outside of riser card housing  300 . For example, the components may represent on-board components of an electronic device that are disposed inside the enclosure of the electronic device and next to riser card housing  300 . 
     FIG. 4  illustrates an exploded view of a riser card housing  490  in accordance with one or more embodiments of the present invention. Riser card housing  490  may include an inlet/outlet side  400 , an inlet/outlet side  450 , and a tunnel  430 . 
   Inlet/outlet side  400  may be formed of a plastic material. Inlet/outlet side  400  may include one or more engaging features, such as a snap feature  402 , for mechanically coupling inlet/outlet side  400  with tunnel  430 . 
   Inlet/outlet side  450  may include a fan  451  configured to promote air flow into/away from riser card housing  490 . In one or more embodiments, fan  451  may be configured to draw healed air away from tunnel  430 . In one or mote embodiments, fan  451  may be configured to draw room-temperature air into tunnel  430 . Inlet/outside side  450  may include one or more engaging features, such as a snap feature  454 , for mechanically coupling inlet/outlet side  450  with tunnel  430 . 
   Tunnel  430  may include an opening  432  configured to facilitate access to one or more components installed on a riser card disposed inside tunnel  430 . For example, through opening  432 , a user may be able to remove a memory module from a riser card or to add a memory module onto the riser card without extracting the riser card from tunnel  430 . Opening  432  may be covered by a removable lid  431 . 
   As can be appreciated from the foregoing, embodiments of the present invention may provide a riser card housing with pre-installed components as an integrated, readily removable module. As a result, electronic device assembly and service may be significantly simplified. Advantageously, manufacturing and servicing costs for electronic devices may be reduced. 
   Further, embodiments of the invention may include parts that perform multiple functions. For example, an inlet/outlet structure may also he configured to direct air flow, to guide movement of a riser card, and to secure the riser card. As a result, part counts of electronic devices may be reduced. Advantageously, material costs and manufacturing costs for electronic devices may be further reduced. 
   Embodiments of the invention may also effectively distribute and/or separate heat generating components through utilizing riser cards. Embodiments of the invention may also provide tuned and/or optimized cooling for components disposed inside and/or outside riser card housings. Advantageously, performance and durability of electronic devices may be optimized. 
   While this invention has been described in terms of several embodiments, there are alterations, permutations, and equivalents, which fall within the scope of this invention. It should also be noted that there are many alternative ways of implementing the methods and apparatuses of the present invention. Furthermore, embodiments of the present invention may find utility in other applications. The abstract section is provided herein for convenience and, due to word count limitation, is accordingly written for reading convenience and should not be employed to limit the scope of the claims. It is therefore intended that the following appended claims be interpreted as including all such alternations, permutations, and equivalents as fall within the true spirit and scope of the present invention.

Metadata:
Filing Date: 20070731
Publication Date: 20090526
Grant Date: 20090526
Priority Date: 20070731
Inventors: SPRINGER GREGORY
DIEP Vinh
MARIANO RICARDO
HEIRICH DOUGLAS L.
RUSSELL-CLARKE PETER
DE LULIIS DANIELE
Assignee: APPLE INC
CPC Classifications: [{"code": "G06F1/185", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F1/20", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F1/185", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F1/20", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 40337886