Modern electronic equipment can include heat sinks within the equipment and/or on the exterior of the equipment that use convective heat transfer from the equipment to the surrounding environment as a means of thermal management. In a typical configuration, one or more circuit card assemblies (CCAs) are located within an equipment box. In some cases, natural convection is the primary means of thermal management. In other cases, forced airflow can be directed toward or near the electronic equipment to assist in thermal management. As more electronic equipment is added in a particular configuration, the thermal management system may not be capable of providing proper thermal management under all operating conditions. An aircraft is an example of in which electronic equipment can be configured to take advantage of constrained space, but this can result in a degradation of available cooling airflow to electronic equipment. Various equipment mounting configurations can also increase the complexity of trying to accommodate the thermal management requirements of a variety of electronic equipment.
An important consideration in the mechanical packaging of electronic circuitry is the ability to manage the internal temperature under all possible operating and environmental conditions. The failure to maintain CCA temperatures below component operating limits can lead to a loss of functionality of those components, and/or the shortening of their operational life. Accordingly, thermal management of electronic equipment is an important design consideration when configuring an operational asset such as an aircraft. However, existing mounting configurations for electronic equipment can result in an inadequate thermal management of that equipment under certain operating conditions.
A cooling mount for supporting an electronic assembly includes a chassis having one or more air inlet ports, at least one of which is on the front, and one or more cooling fans located in the interior region. The cooling fans are configured to draw external air through the one or more air inlet ports into the interior region and to discharge air from the interior region out through the top toward the electronic assembly. The chassis width is greater than the height, and the chassis depth is also greater than the height. The cooling mount can either be attached to, or integrally formed with, the electronic assembly.
A cooling mount for supporting an electronic assembly includes a chassis having one or more air inlet ports, at least one of which is on the front, and one or more cooling fans located in apertures located in the top. The cooling fans are configured to draw external air through the one or more air inlet ports into the interior region and to discharge air from the interior region out through the top toward the electronic assembly. The chassis width is greater than the height, and the chassis depth is also greater than the height. The cooling mount can be attached to the electronic assembly.
A cooling mount for supporting an electronic assembly includes a chassis having one or more air inlet ports, at least one of which is on the front, and one or more cooling fans located in an internal region. The cooling fans are configured to draw external air through the one or more air inlet ports into the interior region and to discharge air from the interior region via a plenum and out through one or more discharge ports located on the top near the sides, thereby directing air toward external heat sinks on the electronic assembly.
An integrated cooling mount for providing improved thermal management of electronic equipment is disclosed. The integrated cooling mount can also be referred to as a modular cooling mount, or as a cooling mount. The cooling mount can be attached to, or integrated with, an electronic assembly for providing forced airflow to the circuit card assemblies (CCAs) contained within, thereby assisting in the convective cooling of those CCAs. The cooling mount can be used as a modular component in configuring the installation of new equipment, or in retrofitting an existing equipment configuration. As used in this disclosure, “thermal management” refers to the process of maintaining the temperature of CCAs within operating limits. Several factors can together provide thermal management. The present disclosure is directed to an integrated cooling mount that assists in providing airflow to an electronic equipment box to aid in thermal management.
The cooling mount can be used as a base below an equipment box, as a top above an equipment box, or on a side or face of an equipment box. Moreover, the integrated cooling mount can accommodate multiple mounting configurations including hard-mounting, rack-mounting, tray-mounting, and isolation-mounting.
In an exemplary embodiment, width W and depth D can both be approximately 6 inches (15.2 cm). In another exemplary embodiment, width W and depth D can both be approximately 12 inches (30.5 cm). In other embodiments, width W and depth D can be different from each other. For example, in an exemplary embodiment, width W can be approximately 16 inches (40.6 cm) and depth D can both be approximately 10 inches (25.4 cm). All dimensions of width W and depth D are within the scope of the present disclosure. In the illustrated embodiment, height H is less than both of width W and depth D. In some embodiments, height H is significantly less than both of width W and depth D. In an exemplary embodiment, height H can be approximately 1.5 inches (3.8 cm). In some embodiments, height H can range from approximately 1-2 inches (2.5-5.1 cm). In other embodiments, height H can be less than 1 inch (2.5 cm) or greater than 2 inches (5.1 cm). Generally speaking, it can be useful for height H to be less than both width W and depth D. In other words, cooling mount 30 can be said to have a low profile, thereby not contributing to the overall height envelope of electronic assembly 10 relative to width W and depth D in a particular embodiment.
Electronic assembly 10 includes chassis 32 having air inlet port 46. In the illustrated embodiment, chassis 32 is made from a metal or metal alloy. Non-limiting examples of metallic materials that can be used include nickel, aluminum, titanium, copper, iron, cobalt, silver, and all alloys that include any of these various metals. In some embodiments, various alloys of aluminum can be used to make chassis 32. In a particular embodiment, aluminum alloy 6061 can be used to make chassis 32. In the illustrated embodiment, various manufacturing methods can be used to make chassis 32, with manufacturing methods including without limitation extrusion, forging, subtractive manufacturing, casting, molding, and combinations of these methods. In other embodiments, chassis 32 can be made by additive manufacturing and/or hybrid additive subtractive manufacturing processes. In some embodiments, chassis 32 can be made from plastics, resins, ceramics, fibers, composites, and other materials. In a particular embodiment, it can be beneficial for chassis 32 to be lightweight, thereby not contributing appreciably to the overall weight of a particular equipment configuration. In another particular embodiment, it can be beneficial for chassis 32 to be relatively rigid and/or have relatively high material strength. In yet another particular embodiment, it can be beneficial for chassis 32 to be resilient and/or partially compliant, thereby providing some degree of mechanical shock absorption and/or vibration dampening. It is to be appreciated that one or more of the aforementioned properties of chassis 32 can be combined with any of these and/or with any other properties in a particular embodiment.
Referring again to
Referring again to
In some embodiments, cooling mount 30 can be attached to electronic assembly 10, thereby mating cooling mount 30 to electronic assembly 10. This can be referred to as being matingly attachable. In some of these embodiments, threaded fasteners (not shown) or other fasteners can be used to attach cooling mount 30 to electronic assembly 10. In other embodiments, cooling mount 30 can be integrally formed with electronic assembly 10. A non-limiting example of integrally forming cooling mount 30 with electronic assembly 10 is replacing a bottom access panel on electronic assembly 10 with cooling mount 30, thereby creating a configuration in which cooling mount 30 becomes the bottom access panel on electronic assembly 10. An integral combination of cooling mount 30 and electronic assembly 10 can be referred to as an integrated electronic assembly.
In the illustrated embodiment, filter 64 is positioned on air inlet port 46, thereby filtering inlet air 54 being drawn into cooling mount 30. Filter 64 can be useful for removing foreign material, dust, dirt, and the like from being drawn into cooling mount 30. In some embodiments, filter 64 can be a grille (i.e., grating, screen) that prevents relatively large objects from entering cooling mount 30. In these embodiments, filter 64 can also perform a safety function in preventing fingers from entering cooling mount 30, where they can come into contact with one or more cooling fans 50. In other embodiments, filter 64 can be made of a filter medium that prevents finer particles or particulates from entering cooling mount 30. In yet other embodiments, filter 64 can be a high efficiency particulate air (HEPA) filter, ultra-low particulate air (ULPA) filter, and the like. As noted above, in some embodiments more than one air inlet port 46 can be located on cooling mount 30. Accordingly, in these embodiments, filter 64 can be associated with each air inlet port 46. In some embodiments, filter 64 can be replaceable.
Referring again to
In the illustrated embodiment, discharge ports 88 are located on top 74 of cooling mount 70, near sides 82, thereby directing discharge air 96 upward toward heat sinks 12 of electronic assembly 10. Cooling fans 90 are located within interior region 92 of cooling mount 70 and direct air upward into plenum 84, where it flows outward (i.e., toward sides 82) and upward through discharge ports 88. As discharge air 96 is pushed upward by cooling fans 90, a negative pressure region is created within interior region 92, thereby drawing inlet air 94 into cooling mount 70 through air inlet port 86. A filter (not shown) can be installed at air inlet port 86, as described above in regard to
In the cross-sectional view of the illustrated embodiment, two cooling fans 90 are shown. In an embodiment, cooling mount 70 can include four cooling fans 90, as was shown in
In the illustrated embodiment, cooling mount 70 can include hard mounts and/or dagger feet and/or other mounting mechanisms (not labeled in
The following are non-exclusive descriptions of possible embodiments of the present invention.
A cooling mount for supporting an electronic assembly, the cooling mount comprising: a chassis defining a top, bottom, front, back, two sides, a height, width, depth, and an interior region; one or more air inlet ports, at least one of which is disposed on the front; and one or more cooling fans, each of which is disposed in the interior region; wherein: the front, back, and two sides define a perimeter; the width is greater than the height; the depth is greater than the height; the one or more cooling fans are configured to draw external air through the one or more air inlet ports into the interior region and to discharge air from the interior region out through the top toward the electronic assembly; and the cooling mount is configured to be matably attached to, or integrally formed with, the electronic assembly.
The cooling mount of the preceding paragraph can optionally include, additionally and/or alternatively, any one or more of the following features, configurations and/or additional components:
A further embodiment of the foregoing cooling mount, further comprising: one or more air filters disposed on at least one of the one or more air inlet ports; wherein: each of the one or more air filters is configured to filter particulate matter, thereby preventing the particulate matter from being drawn into the interior region.
A further embodiment of the foregoing cooling mount, wherein each of the one or more air filters is a high efficiency particulate air (HEPA) filter.
A further embodiment of the foregoing cooling mount, further comprising: a plurality of mounting devices; wherein: the plurality of mounting devices are disposed on the perimeter and are configured to matably attach the cooling mount to an equipment cabinet.
A further embodiment of the foregoing cooling mount, wherein at least one of the mounting devices is a dagger mount.
A further embodiment of the foregoing cooling mount, wherein at least one of the mounting devices is a hard mount.
A further embodiment of the foregoing cooling mount, wherein the chassis comprises one or more of nickel, aluminum, titanium, copper, iron, cobalt, and/or alloys thereof.
A further embodiment of the foregoing cooling mount, wherein the chassis comprises one or more of plastic, resin, ceramic, fibers, composites, and/or combinations thereof.
A further embodiment of the foregoing cooling mount, further comprising a connector port configured to accommodate an electrical connection to the electronic assembly.
A further embodiment of the foregoing cooling mount, wherein the one or more cooling fans are configured to be controllable in response to a temperature.
A further embodiment of the foregoing cooling mount, wherein the cooling mount is configured to provide an indication of a flow rate of the discharge air from the interior region.
A further embodiment of the foregoing cooling mount, wherein the cooling mount is configured to monitor a performance level of at least one of the one or more air filters.
A further embodiment of the foregoing cooling mount, further comprising: one or more cooling fan ports, at least one of which is located on the top; wherein: a cooling fan is disposed in each of the one or more cooling fan ports.
A further embodiment of the foregoing cooling mount, further comprising: one or more discharge ports, disposed on the top in a region near at least one of the two sides; and a plenum, disposed between the interior region and the one or more discharge ports, fluidly connecting the interior region to the one or more discharge ports; wherein: the one or more cooling fans are configured to discharge air from the interior region into the plenum, thereby directing air out through the one or more discharge port.
A further embodiment of the foregoing cooling mount, wherein: the electronic assembly further comprises one or more external heat sinks; the cooling mount is matably attached to the electronic assembly; and the one or more discharge ports are configured to direct air toward the one or more external heat sinks.
A further embodiment of the foregoing cooling mount, wherein: the equipment cabinet defines a cabinet floor, a cabinet ceiling, and a cabinet wall; and the cooling mount is matably attached to the equipment cabinet at a surface selected from the group consisting of: the cabinet floor, the cabinet ceiling, and the cabinet wall.
A further embodiment of the foregoing cooling mount, wherein: the equipment cabinet defines a cabinet floor; the equipment cabinet further comprises an equipment tray configured to slideably attach to the cabinet floor, thereby allowing the equipment tray to slide relative to the cabinet floor; and the cooling mount is matably attached to the equipment tray.
An integrated electronic assembly, comprising: an electronic assembly; and the foregoing cooling mount; wherein: the cooling mount is integrally formed with the electronic assembly.
The cooling mount of the preceding paragraph can optionally include, additionally and/or alternatively, any one or more of the following features, configurations and/or additional components.
A cooling mount for supporting an electronic assembly, the cooling mount comprising: a chassis defining a top, bottom, front, back, two sides, a height, width, depth, and an interior region; one or more air inlet ports, at least one of which is disposed on the front; one or more cooling fan ports on the top, each creating an aperture through the top; a cooling fan disposed in each of the one or more cooling fan ports; and a plurality of mounting devices; wherein: the front, back, and two sides define a perimeter; the width is greater than the height; the depth is greater than the height; the cooling mount is configured to be matably attached to, or integrally formed with, the electronic assembly; and the one or more cooling fans are configured to draw external air through the one or more air inlet ports into the interior region and to discharge air from the interior region out through the one or more cooling fan ports toward the electronic assembly.
The cooling mount of the preceding paragraph can optionally include, additionally and/or alternatively, any one or more of the following features, configurations and/or additional components.
A cooling mount for supporting an electronic assembly, the cooling mount comprising: a chassis defining a top, bottom, front, back, two sides, a height, width, depth, and an interior region; one or more air inlet ports, at least one of which is disposed on the front; one or more cooling fans disposed in the interior region; one or more discharge ports disposed on the top in a region near at least one of the two sides; a plenum, disposed between the interior region and the one or more discharge ports, fluidly connecting the interior region to the one or more discharge ports; and a plurality of mounting devices; wherein: the electronic assembly further comprises one or more external heat sinks; the cooling mount is matably attached to the electronic assembly; the one or more discharge ports are configured to direct air toward the one or more external heat sinks; and the one or more cooling fans are configured to draw external air through the one or more air inlet ports into the interior region and to discharge air from the interior region through the plenum and out through the one or more discharge ports.
While the invention has been described with reference to an exemplary embodiment(s), it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment(s) disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.