Patent Publication Number: US-2022240396-A1

Title: Electronic Device Venting System

Description:
PRIORITY 
     This application claims the benefit of priority to U.S. Provisional Application No. 63/142,353, filed Jan. 27, 2021, which is incorporated by reference in its entirety into this application. 
    
    
     BACKGROUND 
     Cleaning procedures for cleaning and sterilizing electronic equipment, especially medical devices, can be challenging. Most cleaning procedures require harsh chemicals and other fluids that have the potential to permeate or seep into the electronic systems, causing long term damage to the equipment. It would be beneficial to producers and consumers of electronic equipment to have a venting system that allows air intake to cool the electronic system and avoids fluid ingress during cleaning procedures. Disclosed herein is a system and method that address the foregoing. 
     SUMMARY 
     Disclosed herein is a venting system for an electronic device. The electronic device having a body defining an internal cavity having one or more electronic systems disposed within the internal cavity. The venting system includes a plurality of fins defining a plurality of vent apertures in fluid communication with the internal cavity. One or more of the plurality of the fins includes one or more fin channels configured to direct fluid away from the vent apertures and the fins to one or more drainage channels. 
     In some embodiments, the venting system is coupled to the body of the electronic device or integrated into the body of the electronic device. 
     In some embodiments, the one or more fin channels runs from interior the electronic device to exterior the electronic device. 
     In some embodiments, the one or more fin channels and the drainage channels include open channels. 
     In some embodiments, the plurality of fins and the plurality of vent apertures are organized into one or more vertical or horizontal columns. 
     In some embodiments, the drainage channels are oriented vertically and are adjacent to the plurality of fins. 
     In some embodiments, each of the fin channels include a fin channel width, a fin channel length extending from a top of the fin to a bottom of a fin and a fin channel depth. 
     In some embodiments, the fin channel width is consistent along the entire fin channel length or increases or decreases along the fin channel length. 
     In some embodiments, the fin channel depth is consistent along the entire fin channel length or increases or decreases along the fin channel length. 
     In some embodiments, one or more of the fin channels is U-shaped, C-shaped, or V-shaped. 
     In some embodiments, the one or more drainage channels are U-shaped, C-shaped, or V-shaped. 
     In some embodiments, the one or more fin channels or the one or more drainage channels include enclosed channels. 
     In some embodiments, the drainage channels include microfluidic tubes. 
     In some embodiments, at least a portion of each fin of the plurality of fins includes a hydrophobic coating or a plurality of super-hydrophobic structures. 
     In some embodiments, the one or more drainage channels include a hydrophobic coating or a plurality of super-hydrophobic structures. 
     In some embodiments, the plurality of fins are sloped downward at an angle through the range of 0° to −70° in relation to a top of the electronic device. 
     In some embodiments, each fin of the plurality of fins includes a fin length and a fin width. 
     In some embodiments, the fin width is greater than or equal to the fin length or the fin width is less than the fin length. 
     In some embodiments, the fin channel length is less than or equal to the fin length. 
     Also disclosed herein is a method of cleaning an electronic device including applying a cleaning fluid to an electronic device having an internal cavity including one or more electronic systems therein, where the electronic device includes a venting system having a plurality of fins defining a plurality of vent apertures, the fins having a plurality of fin channels in fluid communication with two or more drainage channels, and the plurality of vent apertures in fluid communication with the internal cavity, and directing the cleaning fluid through the fin channels away from the plurality of vent apertures to the drainage channels, to mitigate fluid ingress into the electronic device cavity. 
     In some embodiments, directing the cleaning fluid through the fin channels away from the plurality of vent apertures to the drainage channels includes using gravity flow. 
     In some embodiments, applying a cleaning fluid to the electronic device includes applying the cleaning fluid directly to the electronic device. 
     In some embodiments, applying a cleaning fluid to the electronic device includes applying the cleaning fluid indirectly to the electronic device by applying the cleaning fluid to a cleaning apparatus and applying to cleaning apparatus to the electronic device. 
     In some embodiments, applying a cleaning fluid to the electronic device includes spraying the cleaning fluid onto the electronic device, misting the cleaning fluid onto the electronic device, dripping the cleaning fluid onto the electronic device, or submerging the electronic device into the cleaning fluid. 
     In some embodiments directing the cleaning fluid through the fin channels away from the plurality of vent apertures to the drainage channels includes using a hydrophobic coating on a portion of the plurality of fins or a portion of the plurality of fin channels to direct the cleaning fluid. 
     In some embodiments, directing the cleaning fluid through the fin channels away from the plurality of vent apertures to the drainage channels includes using a plurality of super-hydrophobic structures on a portion of the plurality of fins or a portion of the plurality of fin channels to direct the cleaning fluid. 
     These and other features of the concepts provided herein will become more apparent to those of skill in the art in view of the accompanying drawings and following description, which describe particular embodiments of such concepts in greater detail. 
    
    
     
       DRAWINGS 
       A more particular description of the present disclosure will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the infinion and are therefore not to be considered limiting of its scope. Example embodiments of the infinion will be described and explained with additional specificity and detail through the use of the accompanying drawings in which: 
         FIG. 1  illustrates a perspective view of an electronic device including a venting system, in accordance with some embodiments. 
         FIG. 2  illustrates a plan view of the electronic device, including the venting system, in accordance with some embodiments. 
         FIG. 3  illustrates a plan view of the venting system, in accordance with some embodiments. 
         FIGS. 4A-4B  illustrate plan views of different embodiments of the venting system, in accordance with some embodiments. 
         FIG. 5  illustrates a plan view of the venting system, in accordance with some embodiments. 
         FIG. 6A  illustrates a plan view of a fin, including one or more fin channels, in accordance with some embodiments. 
         FIG. 6B  illustrates a cross sectional view of the fin of  FIG. 6A , in accordance with some embodiments. 
         FIG. 6C  illustrates a plan view of the fin, including one or more fin channels, in accordance with some embodiments. 
         FIG. 6D  illustrates a cross sectional view of the fin of  FIG. 6C , in accordance with some embodiments. 
         FIG. 6E  illustrates a side cross sectional view of the venting system, in accordance with some embodiments. 
         FIG. 7  illustrates a plan view of the electronic device including the venting system, in accordance with some embodiments. 
         FIG. 8  illustrates a flow chart of an exemplary method of cleaning an electronic device, in accordance with some embodiments. 
     
    
    
     DESCRIPTION 
     Before some particular embodiments are disclosed in greater detail, it should be understood that the particular embodiments disclosed herein do not limit the scope of the concepts provided herein. It should also be understood that a particular embodiment disclosed herein can have features that can be readily separated from the particular embodiment and optionally combined with or substituted for features of any of a number of other embodiments disclosed herein. 
     Regarding terms used herein, it should also be understood the terms are for the purpose of describing some particular embodiments, and the terms do not limit the scope of the concepts provided herein. Ordinal numbers (e.g., first, second, third, etc.) are generally used to distinguish or identify different features or steps in a group of features or steps, and do not supply a serial or numerical limitation. For example, “first,” “second,” and “third” features or steps need not necessarily appear in that order, and the particular embodiments including such features or steps need not necessarily be limited to the three features or steps. Labels such as “left,” “right,” “top,” “bottom,” “front,” “back,” and the like are used for convenience and are not intended to imply, for example, any particular fixed location, orientation, or direction. Instead, such labels are used to reflect, for example, relative location, orientation, or directions. Singular forms of “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. 
     The term “electronic device” should be construed as devices that includes electronics therein or thereon. Examples of an electronic device may include, but are not limited or restricted to, the following: medical devices such as monitors, ultrasound probes, surgical instruments, fluid collecting systems, EKG machines and the like. The term “computing device” should be construed as electronics with the data processing capability and/or a capability of connecting to any type of network, such as a public network (e.g., Internet), a private network (e.g., a wireless data telecommunication network, a local area network “LAN”, etc.), or a combination of networks. Examples of a computing device may include, but are not limited or restricted to, the following: a server, an endpoint device e.g., a laptop, a smartphone, a tablet, a “wearable” device such as a smart watch, augmented or virtual reality viewer, or the like, a desktop computer, a netbook, a medical device, or any general-purpose or special-purpose, user-controlled electronic device or the like. 
     As used herein, the term “fluid” includes a gas, a liquid, or combination of both (e.g., water vapor, a mist, droplets or the like). 
     Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art. 
       FIG. 1  illustrates a perspective view of an electronic device  50  including a venting system  100 , in accordance with some embodiments. The electronic device  50  includes a body  52  having an external surface  54  and an internal cavity  56  therein. In some embodiments, the body  52  may be a substantially cuboid shape, however, it will be appreciated that other three-dimensional shapes are also contemplated including a triangular prism, a cube, a sphere, a cylinder, a cone, an irregular polygon or the like. In some embodiments, the body  52  may include a front side, a back side, a left side, a right side, a top side, and a bottom side. In some embodiments, the internal cavity  56  includes one or more electronic systems  70  disposed therein. In some embodiments, the internal cavity  56  may also include other sensitive components therein. 
     In some embodiments, the electronic device  50  may include a venting system  100  configured to be in fluid communication with the internal cavity  56  and provide fluid communication between the internal cavity  56  and the external surface  54 , for example, to allow a flow of air to dissipate heat from the electronics systems  70  disposed therein. In some embodiments, the venting system  100  includes a plurality of fins  120  defining a plurality of vent apertures  130 , the plurality of vent apertures  130  may be configured to connect the internal cavity  56  with the external surface  54 . The plurality of vent apertures  130  may be configured to allow for air exchange over the plurality of vent apertures  130  into the internal cavity  56  to dry any fluid on the plurality of vent apertures  130  and dissipate heat from the one or more electronic systems  70  therein. In some embodiments, the plurality of vent apertures  130  may allow for the passive exchange of air. In some embodiments, the plurality of vent apertures  130  may allow for the active exchange of air. For example, the internal cavity  56  may include mechanical means for actively exchanging air (e.g., a fan configured to draw air into or dispel air out of the internal cavity  56  or the like). In some embodiments, the venting system  100  further includes one or more drainage channels  140 , configured to drain fluid from the plurality of fins  120  and the plurality of vent apertures  130  that will be described in more detail herein. In some embodiments, the drainage channels  140  may include open channels. 
     In some embodiments, the venting system  100  may be formed as a separate structure and coupled to the external surface  54  of the electronic device  50  or may be formed integrally with the body  52 . In some embodiments, as illustrated in  FIG. 1 , the venting system  100  may be located at the back side of the electronic device  50  or may be located at the front side of the electronic device  50 . It can be appreciated that the venting system  100  can be located anywhere on the electronic device  50 . Although electronic devices such as medical devices (e.g., ultrasound consoles, ultrasound probes, displays, ventilators, portable X-ray machines or the like) are disclosed, it can be appreciated that other electronic devices such as computing devices may include the venting system  100  and are considered. Advantageously, the venting system  100  provides dual purposes: directing airflow through the plurality of vent apertures  130  to cool the one or more electronic systems  70  within the internal cavity  56  to prevent overheating and directing fluid from the plurality of fins  120  to the two or more drainage channels  140  to preserve the electronic systems  70  and other sensitive internal components and to reduce failure of the electronic systems  70  from ingress of fluids. 
       FIG. 2  illustrates a plan view of the electronic device  50 , including the venting system  100 , in accordance with some embodiments. In some embodiments, the electronic device  50  includes the body  52  having the external surface  54  and the internal cavity  56  configured to contain the one or more electrical systems  70  therein. The venting system  100  includes the plurality of fins  120  defining the plurality of vent apertures  130  providing fluid communication between the internal cavity  56  and the external surface  54 . Air may be drawn into or may flow out of the internal cavity  56  through the plurality of vent apertures  130 . The continual air flow through the plurality of vent apertures  130  may be configured to cool the one or more electronic systems  70  within the internal cavity  56 . In some embodiments, the electronic device  50  may undergo a cleaning procedure that includes one or more solutions or fluids applied to the electronic device  50 . The one or more solutions or fluids may ingress into the internal cavity  56  or pool on the plurality of fins  120 . The continual air flow through the plurality of vent apertures  130  may be configured to help dry any fluid within the internal cavity  56  or on the plurality of fins  120 . 
       FIG. 3  illustrates a plan view of the venting system  100 , in accordance with some embodiments. The venting system  100  includes the plurality of fins  120  defining the plurality of vent apertures  130 . The venting system  100  includes the two or more drainage channels  140 . In some embodiments, the drainage channels  140  may be formed or integrated into the external surface  54 . In some embodiments, the drainage channels  140  may be imprinted, carved, stamped or the like into the external surface  54 . In some embodiments, the drainage channels  140  may be organized in various configurations including vertically (e.g., top to bottom), horizontally (e.g., left to right) or a combination thereof. For example, as illustrated in  FIG. 3 , the drainage channels  140  may be located laterally adjacent the plurality of fins  120 . In some embodiments, the drainage channels  140  may further include horizontal drainage channels in fluid communication with the vertical drainage channels, as illustrated in  FIG. 3 . The horizontal drainage channels may be located on each fin of the plurality of fins  120  or on some fins of the plurality of fins  120 . In some embodiments, the plurality of fins  120  direct fluid to the horizontal drainage channels and the horizontal drainage channels may direct the fluid to the vertical drainage channels. 
       FIGS. 4A-4B  illustrate a plan view of different configurations of the venting system  100  coupled to the electronic device  50 , in accordance with some embodiments. In some embodiments, the plurality of fins  120  defining the plurality of vent apertures  130  may be organized into one or more vertical columns, one or more horizontal columns or a combination thereof. In some embodiments, the venting system  100  may include a central drainage channel  242  configured to collect the fluid flow from the drainage channels  240 A/ 240 B, located lateral the central drainage channel  242 . In some embodiments, the plurality of fins  120  may be angled or sloped to funnel fluid to the drainage channels  240 A/ 240 B. As illustrated in  FIG. 4A , the plurality of fins  220  may be arranged in a column, including a right fin column  224 , angled and extending from the central drainage channel  242  to the right drainage channel  240 B and a left fin column  222 , angled and extending from the central drainage channel  242  to the left drainage channel  240 A, the right fin column  224 , the left fin column  22  and the central drainage channel  242  forming an inverted V shape. Advantageously, the plurality of fins  220  can be arranged to create turbulent flow in order to collect and direct any fluid on or around the venting system  100  to the left and right drainage channels  240 A/ 240 B and the central drainage channel  242 . Furthermore, the air flowing into the internal cavity  56  through the plurality of vent apertures  130  may be configured to create a type of vortex, cooling the internal cavity  56  and preventing fluid from being established around the venting system  100 , instead directing the fluid to the left and right drainage channels  240 A/ 240 B and the central drainage channel  242 . This configuration of the left and right drainage channel  240 A/ 240 B and the central drainage channel  242  may be configured to help remove fluid around the venting system  100 , easing the cleaning process around the venting system  100 . 
     In some embodiments, the venting system  100  may include the left drainage channel  240 A and the right drainage channel  240 B. In some embodiments, the plurality of fins  120  may extend from the left drainage channel  240 A to the right drainage channel  240 B, arranged in a column of fins  120 . For example, as illustrated in  FIG. 4B , the column of fins  120  may be configured to extend and angle from the left drainage channel  240 A to the right drainage channel  240 B. In some embodiments, the left drainage channel  240 A and the right drainage channel  240 B may merge into the central drainage channel  242 . Advantageously, this configuration may allow an increase in air flow through the plurality of vent apertures  130  into the internal cavity  56 . 
       FIG. 5  illustrates a plan view of the venting system  100 , in accordance with some embodiments. In some embodiments, the plurality of fins  120  may include a plurality of fin channels  132  configured to channel fluid on the plurality of fins  120  to the drainage channels  140 . In some embodiments, the fin channels  132  may be open channels or closed channels. The plurality of fin channels  132  may be configured to be in fluid communication with the vertical drainage channels  140 , horizontal drainage channels  140  or a combination thereof. The plurality of fin channels  132  may be configured in a variety of shapes and run from interior the electronic device  50  to exterior the electronic device  50  (e.g. from the internal cavity  56  towards the external surface  54 ). In some embodiments, one of more of the fin channels  132  may be U-shaped, C-shaped, V-shaped, or the like. As illustrated in  FIG. 5 , the venting system  100  may include a left drainage channel  140 A, a right drainage channel  140 B, with each fin  120  having a left fin channel  132 A and a right fin channel  132 B. In some embodiments, the left fin channel  132 A may be in fluid communication with the left drainage channel  140 A and the right fin channel  132 B may be in fluid communication with the right drainage channel  140 B. Air may enter the internal cavity  56  through the plurality of vent apertures  130  and fluid may be drained from the plurality of fins  120  into any one of the left fin channels  132 A or right fin channels  132 B, further moving to the left drainage channel  140 A or the right drainage channel  140 B and off the external surface  54  of the device  50 . The plurality of fins  120  may be organized in various configurations to use gravity flow for draining fluid from the electronic device  50  using the venting system  100 . In some embodiments, the plurality of fins  120  may be sloped or angled towards the bottom of the device  50  as will be described in more detail herein. In some embodiments, the plurality of fins  120  may be sloped from the left side to the right side or from the right side to the left side. In some embodiments, the plurality of fins  120  may be sloped towards the bottom of the device  50  and sloped from the left side to the right side or from the right side to the left side. 
     In some embodiments, the plurality of fins  120  may include a water repellent coating or a hydrophobic coating. In some embodiments, a portion of the fin  120  or the entire fin  120  may be configured to be covered with the hydrophobic coating. For example, the hydrophobic coating may be configured to cover just the one or more fin channels  132 . In some embodiments, the plurality of fins  120  may include super hydrophobic structures thereon. In some embodiments, the super hydrophobic structures on the fin may be configured to direct fluid towards the one or more fin channels  132 . 
     The one or more drainage channels  140  may be configured to maximize gravity flow for draining fluid from the electronic device  50 . As illustrated in  FIG. 5 , the drainage channels  140  may include a drainage channel width  142 , a drainage channel length  144 , and a drainage channel depth  148 . The drainage channels may be U-shaped, C-shaped, V-shaped, or the like. The drainage channel width  142  and the drainage channel depth  146  may be tapered along the drainage channel length  144 . For example, the drainage channel width  142  may increase, decrease or the stay the same along the drainage channel length  144 . The drainage channel depth  142  may increase, decrease or stay the same along the drainage channel length  144 . In some embodiments, the drainage channels  140  may be opened channels on the external surface  54  of the electronic device  50  or may be closed channels within the electronic device. In some embodiment, the drainage channels  140  may include enclosed channels or microfluidic tubes. In some embodiments, a portion of or the entire drainage channels  140  may include a hydrophobic coating or a plurality of super-hydrophobic structures. 
       FIG. 6A  illustrates a plan view of a fin  120  of the venting system  100 , in accordance with some embodiments. In some embodiments, the fin  120  may have a fin length  122  and a fin width  124 . In some embodiments, the fin width  124  may be greater than, less than or equal to the fin length  122 . The fin  120  may be configured to have the one or more fin channels  132  configured to funnel fluid to the one or more drainage channels  140 . The fin channels  132  may be orientated from the interior to the exterior. As used herein, interior includes towards the internal cavity  56  and exterior includes towards the external surface  54 . In some embodiments, the one or more fin channels  132  may include a fin channel length  134 . In some embodiments, the fin channel length  134  may be equal to or less than the fin length  122 . As the fluid enters the fin channel  132 , the fluid may be configured to funnel along the entire fin channel length  134 . In some embodiments, each fin channel length  134  of the one or more fin channels  132  may be the same or may be different. 
       FIG. 6B  illustrate a cross sectional view of the fin  120  of  FIG. 6A , having the one or more fin channels  132 , in accordance with some embodiments. In some embodiments, the one or more fin channels  132  may include a fin channel width  136  and fin channel depth  138 . In some embodiments, the fin channel width  136  and the fin channel depth  138  may be consistent along the entire fin channel length  134 . In some embodiments, the fin channel width  136  may be tapered from a first fin channel width to a larger second fin channel width or from a larger first fin channel width to a small second fin channel width and the fin channel depth  138  may be tapered from a first fin channel depth to a larger second fin channel depth or the from a larger first fin channel depth to a smaller second fin channel depth. In some embodiments, the tapered fin channel depth  138  may use gravity flow to funnel fluid towards the one or more drainage channels  140 . For example, the fin channel depth  138  may be configured to have a shallower first fin channel depth  138  at the top of the fin  120  and a deeper second fin channel depth  138  at the bottom of the fin  120  to allow more fluid to accumulate or funnel to the fin channel  132 . 
       FIG. 6C  illustrates a plan view of the fin  120 , in accordance with some embodiments. In some embodiments, the fin length  122  may be varied in order to bias the fluid flow towards one of the drainage channels  140 . For example, as illustrated in  FIG. 6C , a right fin length  122 B may be shorter than a left fin length  122 A. The shorter right fin length  122 B biases fluid from the right fin channels  130  towards the left fin channels  130  and to the drainage channel  140 . In some embodiments, wherein each fin  120  has a plurality of fin channels  132 , each fin channel length  134  may be different. For example, as illustrated in  FIG. 6C , the fin channel lengths  134  increase as the fin channels  132  move from the right side of the fin  130  to the left side of the fin  120 . 
       FIG. 6D  illustrates a cross sectional view of the fin  120  of  FIG. 6C , the fin  120  having the one or more fin channels  132  in accordance with some embodiments. In some embodiments, the fin channel depth  138  may be varied to bias fluid to move from the fin channels  132  to the drainage channels  140 . For example, as illustrated in  FIG. 6D , the fin channel depth  138  decreases as the fin channels  132  move from the right side of the fin  120  to the left side of the fin  120 . 
       FIG. 6E  illustrates a cross sectional side view of the venting system  100  integrated into the electronic device  50 , in accordance with some embodiments. In some embodiments, the plurality of fins  120  may be configured to be horizontal in relation to the top of the electronic device  50 . In some embodiments, the plurality of fins  120  may be angled downward in relation to the top of the electronic device  50  to bias fluid to move by gravity flow from the interior to the exterior. In some embodiments, the tops of the plurality of fins  120  may be sloped downward at any angle through the range of and including 0° to −70°. In some embodiments, as illustrated in  FIG. 6E , the top of each fin of the plurality of fins  120  may be sloped downward at a different angle through the range of and including 0° to −70° in relation to the top of the electronic device  50 . 
       FIG. 7  illustrates a plan view of the electronic device  50  including the venting system  100 , in accordance with some embodiments. The venting system  100  includes the plurality of fins  120  defining the plurality of vent apertures  130  providing fluid communication between the internal cavity  56  and the external surface  54 . In some embodiments, the plurality of fins  120  defining the plurality of vent apertures  130  may be organized in horizontal columns. The horizontal columns may be attached to the external surface  54  as illustrated on the left side of  FIG. 7  or may be formed integrally with the body  52  as illustrated on the right side of  FIG. 7 . In some embodiments, the plurality of fins  120  may be configured to be angled from right to left. Air may be drawn into or may flow out of the internal cavity  56  through the plurality of vent apertures  130 . The continual air flow through the plurality of vent apertures  130  may be configured to cool the one or more electronic systems  70  within the internal cavity  56 . It can be appreciated that similar measures of channeling of fluid, redirecting of fluid, and drainage of fluid may be used internally within the electronic device  50  to channel any incidental fluid that was not redirected externally, away from the electronic systems  70  and other sensitive internal components. 
       FIG. 8  illustrates a flow chart of an exemplary method  300  of cleaning an electronic device  50 , in accordance with some embodiments. In some embodiments, the method  300  includes applying a cleaning fluid to the electronic device  50  having the internal cavity  56  including the one or more electronic systems  70  therein (block  302 ). In some embodiments, the electronic device  50  includes the venting system  100  having the plurality of fins  120  defining the plurality of vent apertures  130 . In some embodiments, the plurality of fins  120  include a plurality of fin channels  132  in fluid communication with the two or more drainage channels  140 . In some embodiments, the plurality of vent apertures  130  may be configured to be in fluid communication with the internal cavity  56 . In some embodiments, applying may include dripping the cleaning fluid onto the electronic device  50 , spraying the cleaning fluid onto the electronic device  50 , misting the cleaning on the electronic device  50 , submerging the electronic device  50  in the cleaning fluid, or the like. In some embodiments, applying includes applying the cleaning fluid directly to the electronic device  50  or applying the cleaning fluid indirectly by applying the cleaning fluid to a cleaning apparatus (e.g., a disposable cloth, a sponge, or the like) and applying the cleaning apparatus to the electronic device  50 . 
     The method  300  further includes directing the cleaning fluid through the fin channels  132  away from the plurality of vent apertures  130  to the drainage channels  140 , to mitigate fluid ingress into the internal cavity  56  of the electronic device  50  (block  304 ). In some embodiments, directing includes directing by gravity flow. In some embodiments, directing including using a hydrophobic coating on a portion of the fins  120  or a portion of the fin channels  132  to direct the cleaning fluid through the fin channels  132  away from the plurality of vent apertures  130  to the drainage channels  140 . In some embodiments, directing includes using a plurality of super-hydrophobic structures on a portion of the fins  120  or a portion of the fin channels  132  to direct the cleaning fluid to direct the cleaning fluid through the fin channels  132  away from the plurality of vent apertures  130  to the drainage channels  140 . 
     While some particular embodiments have been disclosed herein, and while the particular embodiments have been disclosed in some detail, it is not the intention for the particular embodiments to limit the scope of the concepts provided herein. Additional adaptations and/or modifications can appear to those of ordinary skill in the art, and, in broader aspects, these adaptations and/or modifications are encompassed as well. Accordingly, departures may be made from the particular embodiments disclosed herein without departing from the scope of the concepts provided herein.