US20070224928A1 - System and method for venting air from a computer casing - Google Patents
System and method for venting air from a computer casing Download PDFInfo
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- US20070224928A1 US20070224928A1 US11/805,514 US80551407A US2007224928A1 US 20070224928 A1 US20070224928 A1 US 20070224928A1 US 80551407 A US80551407 A US 80551407A US 2007224928 A1 US2007224928 A1 US 2007224928A1
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- United States
- Prior art keywords
- enclosure
- outlet
- slats
- fan
- rear wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
Definitions
- the invention is directed towards a venting system for a computer enclosure. More specifically, the invention is directed towards venting system that dynamically allows and/or restricts the outflow path of air for venting system.
- venting systems to allow a fan or other environmental mechanism to output heated air to an external environment.
- a fan will draw air across electronic components found within the enclosure for the computer system. The heated electronic components transfer heat to the air as an airflow passes across the electronic components.
- a fan or other environmental outlet mechanism draws the heated air to an aperture or vent disposed in the enclosure. The fan then directs the heated air through the vent into the external environment. All the while, the same outflow produces an inflow of cooler air into the casing, and the process is repeated.
- Some systems contain dynamic thermal regulation systems. When a sensor detects increased thermal parameters in the internal environment of the enclosure, the operational speed of the fan may be increased. Conversely, when a sensor detects decreased thermal parameters in the internal environment of the enclosure, the operational speed of the fan may be decreased.
- the vent is a grated structure disposed across the aperture in the wall of the enclosure. During periods with an increased outflow, the heated air may be obstructed by such a fixed structure. The totality of the heated air may not be able to be expelled through the vent, leading to inefficient heat transfer in the case.
- the periods of low flow may also lead to decreased heat transfer. This might occur, as the pressure of the outflow does not completely block the now-expelled heated air from reentering the enclosure. Again, this may lead to inefficient heat transfer in the case.
- a vent for a computer enclosure is envisioned.
- the vent system has a fan, operable to draw a flow of air from within the enclosure and direct it out through an outlet vent disposed in a wall of the enclosure.
- the outlet vent is made of an outlet path.
- the outlet path is defined by a first and a second side member.
- the first and second side members are attached to the enclosure and form an environmental seal.
- the outlet vent also has an outlet face oriented at a first angle relative to the wall.
- a plurality of slats are rotatably coupled to the outlet face.
- the plurality of slats maintain a first position when the fan is not operating.
- the plurality of slats swing radially outward to a second position.
- the plurality of slats return to the first position when the airflow is not present.
- the angle of the slats in the first position is nearer to parallel to the first angle than when in the second position.
- FIG. 1 is a cross-sectional diagram of a computer enclosure and a venting system for such in enclosure, in accordance with the invention.
- FIG. 2 is a cross-sectional diagram of another embodiment of the computer enclosure and a venting system for such an enclosure, in accordance with the invention.
- FIG. 3 is a perspective diagram detailing an embodiment of the fan and vent assembly of FIG. 2 in accordance with the invention.
- FIG. 4 is a perspective diagram of the back of the vent assembly during rest and used in conjunction with the enclosure of FIG. 2 , in accordance with the invention.
- FIG. 5 is a perspective diagram of the back of the vent assembly during a time that the fan is operating and used in conjunction with the enclosure of FIG. 2 , in accordance with the invention.
- FIG. 6 is a perspective view of the vent as depicted in FIG. 1 , in accordance with the invention.
- FIG. 7 is a perspective view of an alternative orientation of the vent of FIG. 1 , in accordance with the invention.
- FIGS. 8 a and 8 b are side views of the vent apparatus of FIG. 6 during rest and during operation of the fan, respectively, in accordance with the invention.
- FIGS. 9 a and 9 b are side views of the vent system of FIG. 7 during rest and during operation of the fan, respectively, in accordance with the invention.
- FIG. 1 is a cross-sectional diagram of a computer enclosure and a venting system for such in enclosure, in accordance with the invention.
- a computer enclosure 10 has housing defined by an upper wall 12 and a bottom wall 14 .
- the upper wall 12 and the bottom wall 14 are attached to a rear wall 16 .
- the upper wall 12 , the bottom wall 14 , and the rear wall 16 are attached to two side walls.
- a front wall 18 is present. However, in some “rack mount” computer units, the front wall 18 may not be present.
- Electronic components are disposed within the housing defined by the two side walls, the upper wall 12 , the bottom wall 14 , the rear wall 16 , and the optional front wall 18 . Within the housing, the electronic components are protected from damage due from the external environment.
- the two side walls, the upper wall 12 , the bottom wall 14 , the rear wall 16 , and the optional front wall 18 all impede the flow of air from the environment external to the housing into the housing, thus contributing to heat buildup in the housing.
- intake openings disposed in the walls. These openings, acting in coordination with a vent and with an environmental flow mechanism, such as a fan, provide a flow of cooler air from the external environment through the housing 10 a and across the electronic components contained therein.
- a vent 20 Disposed on the rear wall 16 is a vent 20 .
- a fan or other environmental flow mechanism, is used to direct an airflow through the enclosure 10 a of the computer system. This airflow is expelled from the enclosure 10 a through the vent 20 .
- a fan 22 directionally vents the airflow at an angle away from perpendicular to the rear wall 16 .
- the outlet airflow is depicted by an arrow 24 .
- the outflow 24 is vented through a face 26 a of the vent 20 a . In this manner, the outflow 24 is directed downwards and outwards from the enclosure 10 a for the computer system.
- FIG. 2 is a cross-sectional diagram of another embodiment of the computer enclosure and a venting system for such an enclosure, in accordance with the invention.
- the same structural features of the vent are present, but embedded within the construction of the enclosure 10 b .
- an arrow 24 again depicts the outlet airflow from the enclosure 10 b .
- the outflow 24 is vented through a vented face 26 b of the vent 20 b .
- the outflow 24 is directed downwards and outwards from the enclosure 10 b for the computer system.
- the structures depicted in all the Figures may be interior to the enclosures, exterior to the enclosures, or partially interior and partially exterior in nature.
- the environmental flow mechanism 22 may be a fan.
- other flow mechanisms are known to those skilled in the art, and this disclosure should be read as to include them as well.
- Such art may include such mechanisms as pumps, blowers, or any mechanism operable to produce an environmental flow from within the enclosure to the exterior environment.
- the vent assembly and fan may be placed on any exterior wall, and the inclusion of them on the rear wall should be for illustrative purposes. Additionally, only one fan and vent assemblies are shown in FIG. 1 and in FIG. 2 . It should be noted that any number of these fans and/or vents may be contemplated in the scope of this disclosure, as well as the placement of the fans and/or vents on or about differing walls.
- FIG. 3 is a perspective diagram detailing an embodiment of the fan and vent assembly of FIG. 2 in accordance with the invention. This diagram illustrates and highlights the relationship of the directional nature of the fan 22 with respect to the back wall 16 . This diagram is provided without showing any structures covering the face of the vent 20 b , as that relationship is diagramed and explained in succeeding portions of this disclosure.
- FIG. 4 is a perspective diagram of the back of the vent assembly during rest and used in conjunction with the enclosure of FIG. 2 , in accordance with the invention.
- Covering the face 26 b of FIGS. 2 and 3 are slat structures 30 b .
- the slats 30 b are made of roughly rectangular structures that fit over the opening disposed in the wall of the enclosure. The rectangular portions block or impede a flow of air into or out of the enclosure 10 b .
- the rectangular portions of the slats 30 b rest in a first position in a steady state with no force being applied on them.
- the slats 30 b are attached to the vent face 26 b .
- the slats 30 b are attached in a rotatable manner, allowing the slats 30 b to rotate away from the rear wall 16 when a force is applied from the direction of the interior of the enclosure 10 b .
- the rectangular portions of the slats 30 b rotate to a second position that is more perpendicular to the plane of the rear wall 16 than as when the force is not present.
- the slats 30 b rotate back to their rest position, with the rectangular portions of the slats 30 b returning to the first position, that being at an angle more parallel to the rear wall 16 than the second position.
- the slats 30 b With decreased outflows, the slats 30 b lower. The lower position of the rectangular portions of the slats 30 b decrease the area available for expelled air to reenter the enclosure 10 b after it has been expelled. Accordingly, decreased outflows do not result in a “reentry” effect, wherein the outflow can reenter the enclosure 10 b under a decreased outflow.
- FIGS. 2 and 3 direct the airflow in a downwards direction.
- a differing orientation of outflow may be obtained in the upwards direction with little experimentation, and this disclosure should be read as including the upwards orientation herein.
- FIG. 5 is a perspective diagram of the back of the vent during a time that the fan is operating and used in conjunction with the enclosure of FIG. 2 , in accordance with the invention.
- the airflow produced by the fan is, in this case, directed downwards.
- the airflow impinges on the rectangular portion of the slats 30 b .
- the resulting force lifts them away from the rear wall 16 , as depicted in FIG. 5 .
- FIG. 6 is a perspective view of the vent as depicted in FIG. 1 , in accordance with the invention.
- the vent 20 a has a first support member 32 a which is attached to the enclosure 10 a for the computing system. Not shown, a corresponding second support member is located opposite the first support member 32 a .
- the first support member 32 a and the second support member (not shown), together with a structural member 34 form an outlet path for the venting of air out of the enclosure 10 a for the computer system.
- the vent 28 or other environmental opening is disposed in the rear wall 16 of the enclosure 10 a for the computer system.
- an airflow from the interior of the enclosure 10 a for computer system is directed out of the environmental opening 28 .
- the airflow emanating from the environmental opening 28 is redirected by the solid support member 32 a , the second support member (not shown), and the structural member 34 in a specified direction.
- the three members form an outlet path directed downwards.
- the members 32 a and 34 need not end at the rear wall 16 . They may continue into the interior of the enclosure 10 a for the computer system, as denoted in FIG. 1 , in part or in whole.
- the bottom edge 26 a of the outlet vent assembly 20 a has a plurality of slats 30 a coupled to it. Again, the slats 30 a are rotatably coupled, allowing the slats 30 a to swing outwards upwards in response to any airflow emanating from the enclosure 10 a for the computer system.
- the slats 30 a lower and decrease the area available for expelled air to reenter. Accordingly, decreased outflows do not result in a “reentry” effect, wherein the outflow can reenter the enclosure 10 a of the computer system under a decreased outflow.
- the bottom face 26 a of the outlet vent is disposed at an angle relative to the wall of the enclosure 10 a to which it is disposed on.
- the slats 30 a coupled to the bottom face 26 a assume a rest position when the fan is not operating. In the rest position, the rectangular portion of the slats 30 are oriented in an approximately vertical manner due to gravity.
- the slats 30 a swing outwards from the vent face 26 a to assume a second position.
- the rectangular portions of the slats 30 a are oriented during operation of the fan at an angle nearer the perpendicular to the vent face 26 a than they assume during the rest position. Accordingly, the orientation of the slats 30 a move between being in the rest position and that of full operation based upon the level of flows emanating from the environmental opening 28 .
- vent face 26 a to which the slats 30 a are attached may be directed upwards.
- the air flow emanating out of the enclosure 10 a for the computer system is directed upwards, instead of downwards.
- FIG. 7 is a perspective view of an alternative orientation of the vent of FIG. 1 , in accordance with the invention. Many of the same features of the embodiment of FIG. 6 are present, with the airflow being directed upwards instead of downwards.
- the support member 32 a and the other support are substantially the same as that depicted in FIG. 2 .
- the structural member 34 is located on the downward face of the venting structure.
- the slats 30 a are arranged on the upper face of the venting structure, allowing an upwards flow of air out of the enclosure 10 a of the computer system.
- the rest position of the slats 30 a is at an angle substantially parallel to the angle that the upper face 26 a is in relation to the rear wall 16 of the enclosure 10 a for the computer system.
- the slats 30 a lay substantially flat. In one embodiment, they may lie one on top of another. Accordingly, the rest position of the slats 30 a in the embodiment of FIG. 7 strongly inhibits passage of an external environment through the slats 30 a and into the enclosure 10 a of the computer system.
- the outflows from the environmental opening 28 impinge against the surface of the slats 30 a , causing them to raise upwards and allowing an escape path for the outgoing air flows.
- the position in which the slats 30 a enjoy is dictated by the amount of outcoming airflow from the enclosure 10 a of the computer system.
- the slats 30 a will be at an angle closer to the perpendicular to the upper face than when at the rest position.
- FIGS. 8 a and 8 b are side views of the vent apparatus of FIG. 6 during rest and during operation of the fan, respectively, in accordance with the invention.
- the environmental opening (not shown in FIGS. 8 a and 8 b ) is disposed through the rear wall 16 .
- the slats 30 a are disposed at an angle relative to that of the bottom edge of the support number 24 a . In this case, the slats 30 a hang freely with the force of gravity. It should be noted however that the angle at which the slats 30 a rest relative to the support member 32 a may be altered through the use of springs or mechanical devices.
- FIG. 8 b is the side view of the same vent of FIG. 8 a during a period of operation.
- airflow from the interior of the enclosure is expelled through the environmental opening disposed in the back wall 16 .
- This airflow impinges upon the slats 30 a .
- the force created by the outflow rotatably moves the slats 30 a into a second position, as shown in FIG. 8 b.
- FIGS. 9 a and 9 b are side views of the vent system of FIG. 7 during rest and during operation of the fan, respectively, in accordance with the invention.
- the fan or other flow mechanism is not operating. No airflow is directed from the interior of the enclosure through the environmental opening disposed in the wall. Accordingly, the slats 30 a assume a position substantially equal to the edge of the vent structure.
- the fan or flow mechanism is operational and producing an airflow from the interior of the enclosure out through the environmental opening.
- the force of the airflow directed through environmental opening impinges upon the slats 30 a .
- the force of the outflow on the slats 30 a tends to move them in a rotational manner as depicted in FIG. 9 b.
- slats 30 are depicted with faces having a rectangular construction. Other shapes of faces are known in the art, and should be considered as part of this disclosure.
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 10/429,161, filed May 2, 2003. Related patents include U.S. Pat. Nos. 6,702,665 and 6,951,513, which issued from applications filed the same day as the above-mentioned application.
- The invention is directed towards a venting system for a computer enclosure. More specifically, the invention is directed towards venting system that dynamically allows and/or restricts the outflow path of air for venting system.
- Many computer systems have venting systems to allow a fan or other environmental mechanism to output heated air to an external environment. Typically, a fan will draw air across electronic components found within the enclosure for the computer system. The heated electronic components transfer heat to the air as an airflow passes across the electronic components. A fan or other environmental outlet mechanism draws the heated air to an aperture or vent disposed in the enclosure. The fan then directs the heated air through the vent into the external environment. All the while, the same outflow produces an inflow of cooler air into the casing, and the process is repeated. Some systems contain dynamic thermal regulation systems. When a sensor detects increased thermal parameters in the internal environment of the enclosure, the operational speed of the fan may be increased. Conversely, when a sensor detects decreased thermal parameters in the internal environment of the enclosure, the operational speed of the fan may be decreased.
- In many systems, the vent is a grated structure disposed across the aperture in the wall of the enclosure. During periods with an increased outflow, the heated air may be obstructed by such a fixed structure. The totality of the heated air may not be able to be expelled through the vent, leading to inefficient heat transfer in the case.
- In these same systems, the periods of low flow may also lead to decreased heat transfer. This might occur, as the pressure of the outflow does not completely block the now-expelled heated air from reentering the enclosure. Again, this may lead to inefficient heat transfer in the case.
- A vent for a computer enclosure is envisioned. The vent system has a fan, operable to draw a flow of air from within the enclosure and direct it out through an outlet vent disposed in a wall of the enclosure. The outlet vent is made of an outlet path. The outlet path is defined by a first and a second side member. The first and second side members are attached to the enclosure and form an environmental seal. The outlet vent also has an outlet face oriented at a first angle relative to the wall. A plurality of slats are rotatably coupled to the outlet face. The plurality of slats maintain a first position when the fan is not operating. When the fan goes into an operational mode and produces an airflow, the plurality of slats swing radially outward to a second position. The plurality of slats return to the first position when the airflow is not present. The angle of the slats in the first position is nearer to parallel to the first angle than when in the second position.
- The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate one or more embodiments of the present invention and, together with the detailed description, serve to explain the principles and implementations of the invention.
- In the drawings:
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FIG. 1 is a cross-sectional diagram of a computer enclosure and a venting system for such in enclosure, in accordance with the invention. -
FIG. 2 is a cross-sectional diagram of another embodiment of the computer enclosure and a venting system for such an enclosure, in accordance with the invention. -
FIG. 3 is a perspective diagram detailing an embodiment of the fan and vent assembly ofFIG. 2 in accordance with the invention. -
FIG. 4 is a perspective diagram of the back of the vent assembly during rest and used in conjunction with the enclosure ofFIG. 2 , in accordance with the invention. -
FIG. 5 is a perspective diagram of the back of the vent assembly during a time that the fan is operating and used in conjunction with the enclosure ofFIG. 2 , in accordance with the invention. -
FIG. 6 is a perspective view of the vent as depicted inFIG. 1 , in accordance with the invention. -
FIG. 7 is a perspective view of an alternative orientation of the vent ofFIG. 1 , in accordance with the invention. -
FIGS. 8 a and 8 b are side views of the vent apparatus ofFIG. 6 during rest and during operation of the fan, respectively, in accordance with the invention. -
FIGS. 9 a and 9 b are side views of the vent system ofFIG. 7 during rest and during operation of the fan, respectively, in accordance with the invention. - Embodiments of a system and method for venting air from a computer casing are described herein in the context of an enclosure for the storage and operation of electronic components having increased airflow characteristics. Those of ordinary skill in the art will realize that the following detailed description of the present invention is illustrative only and is not intended to be in any way limiting. Other embodiments of the present invention will readily suggest themselves to such skilled persons having the benefit of this disclosure. Reference will now be made in detail to implementations of the present invention as illustrated in the accompanying drawings. The same reference indicators will be used throughout the drawings and the following detailed description to refer to the same or like parts.
- In the interest of clarity, not all of the routine features of the implementations described herein are shown and described. It will, of course, be appreciated that in the development of any such actual implementation, numerous implementation-specific decisions must be made in order to achieve the developer's specific goals, such as compliance with application- and business-related constraints, and that these specific goals will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking of engineering for those of ordinary skill in the art having the benefit of this disclosure. In accordance with the present invention, the components or structures may be implemented using various types of items.
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FIG. 1 is a cross-sectional diagram of a computer enclosure and a venting system for such in enclosure, in accordance with the invention. A computer enclosure 10 has housing defined by anupper wall 12 and abottom wall 14. Theupper wall 12 and thebottom wall 14 are attached to arear wall 16. Also present, but not shown, theupper wall 12, thebottom wall 14, and therear wall 16 are attached to two side walls. In some enclosures, afront wall 18 is present. However, in some “rack mount” computer units, thefront wall 18 may not be present. Electronic components are disposed within the housing defined by the two side walls, theupper wall 12, thebottom wall 14, therear wall 16, and theoptional front wall 18. Within the housing, the electronic components are protected from damage due from the external environment. - The two side walls, the
upper wall 12, thebottom wall 14, therear wall 16, and the optionalfront wall 18 all impede the flow of air from the environment external to the housing into the housing, thus contributing to heat buildup in the housing. To alleviate the thermal problems associated with the housing, intake openings disposed in the walls. These openings, acting in coordination with a vent and with an environmental flow mechanism, such as a fan, provide a flow of cooler air from the external environment through thehousing 10 a and across the electronic components contained therein. - Disposed on the
rear wall 16 is a vent 20. In practice, a fan, or other environmental flow mechanism, is used to direct an airflow through theenclosure 10 a of the computer system. This airflow is expelled from theenclosure 10 a through the vent 20. Afan 22 directionally vents the airflow at an angle away from perpendicular to therear wall 16. - In the embodiment depicted in
FIG. 1 , the outlet airflow is depicted by anarrow 24. Theoutflow 24 is vented through aface 26 a of thevent 20 a. In this manner, theoutflow 24 is directed downwards and outwards from theenclosure 10 a for the computer system. -
FIG. 2 is a cross-sectional diagram of another embodiment of the computer enclosure and a venting system for such an enclosure, in accordance with the invention. The same structural features of the vent are present, but embedded within the construction of theenclosure 10 b. In the embodiment depicted inFIG. 2 , anarrow 24 again depicts the outlet airflow from theenclosure 10 b. Theoutflow 24 is vented through a ventedface 26 b of thevent 20 b. Again, theoutflow 24 is directed downwards and outwards from theenclosure 10 b for the computer system. It should be noted that the structures depicted in all the Figures may be interior to the enclosures, exterior to the enclosures, or partially interior and partially exterior in nature. - Typically, the
environmental flow mechanism 22 may be a fan. However, other flow mechanisms are known to those skilled in the art, and this disclosure should be read as to include them as well. Such art may include such mechanisms as pumps, blowers, or any mechanism operable to produce an environmental flow from within the enclosure to the exterior environment. Further, the vent assembly and fan may be placed on any exterior wall, and the inclusion of them on the rear wall should be for illustrative purposes. Additionally, only one fan and vent assemblies are shown inFIG. 1 and inFIG. 2 . It should be noted that any number of these fans and/or vents may be contemplated in the scope of this disclosure, as well as the placement of the fans and/or vents on or about differing walls. -
FIG. 3 is a perspective diagram detailing an embodiment of the fan and vent assembly ofFIG. 2 in accordance with the invention. This diagram illustrates and highlights the relationship of the directional nature of thefan 22 with respect to theback wall 16. This diagram is provided without showing any structures covering the face of thevent 20 b, as that relationship is diagramed and explained in succeeding portions of this disclosure. -
FIG. 4 is a perspective diagram of the back of the vent assembly during rest and used in conjunction with the enclosure ofFIG. 2 , in accordance with the invention. Covering theface 26 b ofFIGS. 2 and 3 are slatstructures 30 b. Theslats 30 b are made of roughly rectangular structures that fit over the opening disposed in the wall of the enclosure. The rectangular portions block or impede a flow of air into or out of theenclosure 10 b. The rectangular portions of theslats 30 b rest in a first position in a steady state with no force being applied on them. - The
slats 30 b are attached to thevent face 26 b. Theslats 30 b are attached in a rotatable manner, allowing theslats 30 b to rotate away from therear wall 16 when a force is applied from the direction of the interior of theenclosure 10 b. Thus, when such a force is applied, the rectangular portions of theslats 30 b rotate to a second position that is more perpendicular to the plane of therear wall 16 than as when the force is not present. When such a force is removed, theslats 30 b rotate back to their rest position, with the rectangular portions of theslats 30 b returning to the first position, that being at an angle more parallel to therear wall 16 than the second position. - When the fan is engaged, an output flow of air is directed from the interior of the
enclosure 10 b through anenvironmental opening 28. The combination of the action of the fan and thevent 20 b direct the airflow downwards and across the face of theslats 30 b. As such, the resulting outflow creates a force against the hangingslats 30 b, causing them to lift upwards and outwards in a radial manner. - With increased outflows from the interior of the
enclosure 10 b through theenvironmental opening 28, the force directed on theslats 30 b correspondingly increases. This increased force results in theslats 30 b lifting higher and more outward than they would be under a decreased flow. As the outflow increases, theslats 30 b move out of the way and create less of an impediment to the outflow of air. Accordingly, increased outflows do not result in a “backwash” effect, wherein the outflow is forced back into the enclosure. - With decreased outflows, the
slats 30 b lower. The lower position of the rectangular portions of theslats 30 b decrease the area available for expelled air to reenter theenclosure 10 b after it has been expelled. Accordingly, decreased outflows do not result in a “reentry” effect, wherein the outflow can reenter theenclosure 10 b under a decreased outflow. - It should be noted that the assembly of
FIGS. 2 and 3 direct the airflow in a downwards direction. One skilled in the art will recognize that a differing orientation of outflow may be obtained in the upwards direction with little experimentation, and this disclosure should be read as including the upwards orientation herein. -
FIG. 5 is a perspective diagram of the back of the vent during a time that the fan is operating and used in conjunction with the enclosure ofFIG. 2 , in accordance with the invention. The airflow produced by the fan is, in this case, directed downwards. The airflow impinges on the rectangular portion of theslats 30 b. The resulting force lifts them away from therear wall 16, as depicted inFIG. 5 . -
FIG. 6 is a perspective view of the vent as depicted inFIG. 1 , in accordance with the invention. Thevent 20 a has afirst support member 32 a which is attached to theenclosure 10 a for the computing system. Not shown, a corresponding second support member is located opposite thefirst support member 32 a. Thefirst support member 32 a and the second support member (not shown), together with astructural member 34 form an outlet path for the venting of air out of theenclosure 10 a for the computer system. - Shown in dashed lines, the
vent 28 or other environmental opening is disposed in therear wall 16 of theenclosure 10 a for the computer system. From the fan, an airflow from the interior of theenclosure 10 a for computer system is directed out of theenvironmental opening 28. The airflow emanating from theenvironmental opening 28 is redirected by thesolid support member 32 a, the second support member (not shown), and thestructural member 34 in a specified direction. In this case, the three members form an outlet path directed downwards. Of course, themembers rear wall 16. They may continue into the interior of theenclosure 10 a for the computer system, as denoted inFIG. 1 , in part or in whole. - The
bottom edge 26 a of theoutlet vent assembly 20 a has a plurality ofslats 30 a coupled to it. Again, theslats 30 a are rotatably coupled, allowing theslats 30 a to swing outwards upwards in response to any airflow emanating from theenclosure 10 a for the computer system. - When the fan is engaged, an output flow of air is directed from the
environmental opening 28. The combination of thestructural member 34, thesupport member 32 a, and the other support member (not shown) direct the airflow downwards and across the face of theslats 30 a. As such, the resulting outflow creates a force against the hangingslats 30 a. This force causes theslats 30 a to lift upwards and outwards in a radial manner. - Like that described above, with increased outflows from the
environmental opening 28, the force directed on theslats 30 a correspondingly increases. This increased force from the outflow results in theslats 30 a lifting higher and more outward than they would be under a decreased flow. As the outflow increases, theslats 30 a move out of the way and create less of an impediment to the outflow of air. Accordingly, increased outflows do not result in a “backwash” effect, wherein the outflow is forced back into theenclosure 10 a of the computer system. - Again, with decreased outflows, the
slats 30 a lower and decrease the area available for expelled air to reenter. Accordingly, decreased outflows do not result in a “reentry” effect, wherein the outflow can reenter theenclosure 10 a of the computer system under a decreased outflow. - The bottom face 26 a of the outlet vent is disposed at an angle relative to the wall of the
enclosure 10 a to which it is disposed on. Theslats 30 a coupled to thebottom face 26 a assume a rest position when the fan is not operating. In the rest position, the rectangular portion of theslats 30 are oriented in an approximately vertical manner due to gravity. - As described above, during operation of the fan, the
slats 30 a swing outwards from the vent face 26 a to assume a second position. The rectangular portions of theslats 30 a are oriented during operation of the fan at an angle nearer the perpendicular to the vent face 26 a than they assume during the rest position. Accordingly, the orientation of theslats 30 a move between being in the rest position and that of full operation based upon the level of flows emanating from theenvironmental opening 28. - In an alternative embodiment, the vent face 26 a to which the
slats 30 a are attached may be directed upwards. In this case, the air flow emanating out of theenclosure 10 a for the computer system is directed upwards, instead of downwards. -
FIG. 7 is a perspective view of an alternative orientation of the vent ofFIG. 1 , in accordance with the invention. Many of the same features of the embodiment ofFIG. 6 are present, with the airflow being directed upwards instead of downwards. In this embodiment, thesupport member 32 a and the other support (not shown) are substantially the same as that depicted inFIG. 2 . InFIG. 7 , thestructural member 34 is located on the downward face of the venting structure. Theslats 30 a are arranged on the upper face of the venting structure, allowing an upwards flow of air out of theenclosure 10 a of the computer system. - In the embodiment depicted in
FIG. 7 , the rest position of theslats 30 a is at an angle substantially parallel to the angle that theupper face 26 a is in relation to therear wall 16 of theenclosure 10 a for the computer system. In this case, theslats 30 a lay substantially flat. In one embodiment, they may lie one on top of another. Accordingly, the rest position of theslats 30 a in the embodiment ofFIG. 7 strongly inhibits passage of an external environment through theslats 30 a and into theenclosure 10 a of the computer system. - Again, during times when the fan is operating, the outflows from the
environmental opening 28 impinge against the surface of theslats 30 a, causing them to raise upwards and allowing an escape path for the outgoing air flows. During the time that the fan is operating, the position in which theslats 30 a enjoy is dictated by the amount of outcoming airflow from theenclosure 10 a of the computer system. Typically during fan operation, theslats 30 a will be at an angle closer to the perpendicular to the upper face than when at the rest position. -
FIGS. 8 a and 8 b are side views of the vent apparatus ofFIG. 6 during rest and during operation of the fan, respectively, in accordance with the invention. In bothFIGS. 8 a, the environmental opening (not shown inFIGS. 8 a and 8 b) is disposed through therear wall 16. - During periods of time characterized by no airflow from the interior of the enclosure, such as that depicted in
FIG. 8 a, theslats 30 a are disposed at an angle relative to that of the bottom edge of the support number 24 a. In this case, theslats 30 a hang freely with the force of gravity. It should be noted however that the angle at which theslats 30 a rest relative to thesupport member 32 a may be altered through the use of springs or mechanical devices. -
FIG. 8 b is the side view of the same vent ofFIG. 8 a during a period of operation. During operation, airflow from the interior of the enclosure is expelled through the environmental opening disposed in theback wall 16. This airflow impinges upon theslats 30 a. The force created by the outflow rotatably moves theslats 30 a into a second position, as shown inFIG. 8 b. -
FIGS. 9 a and 9 b are side views of the vent system ofFIG. 7 during rest and during operation of the fan, respectively, in accordance with the invention. InFIG. 9 a, the fan or other flow mechanism is not operating. No airflow is directed from the interior of the enclosure through the environmental opening disposed in the wall. Accordingly, theslats 30 a assume a position substantially equal to the edge of the vent structure. However, inFIG. 9 b, the fan or flow mechanism is operational and producing an airflow from the interior of the enclosure out through the environmental opening. The force of the airflow directed through environmental opening impinges upon theslats 30 a. The force of the outflow on theslats 30 a tends to move them in a rotational manner as depicted inFIG. 9 b. - It should be noted that the
slats 30 are depicted with faces having a rectangular construction. Other shapes of faces are known in the art, and should be considered as part of this disclosure. - Thus, a system and method for venting air from a computer casing is described and illustrated. Those skilled in the art will recognize that many modifications and variations of the present invention are possible without departing from the invention. Of course, the various features depicted in each of the figures and the accompanying text may be combined together. Accordingly, it should be clearly understood that the present invention is not intended to be limited by the particular features specifically described and illustrated in the drawings, but the concept of the present invention is to be measured by the scope of the appended claims. It should be understood that various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention as described by the appended claims that follow.
- While embodiments and applications of this invention have been shown and described, it would be apparent to those skilled in the art having the benefit of this disclosure that many more modifications than mentioned above are possible without departing from the inventive concepts herein. The invention, therefore, is not to be restricted except in the spirit of the appended claims.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/805,514 US20070224928A1 (en) | 2003-05-02 | 2007-05-22 | System and method for venting air from a computer casing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/429,161 US7238104B1 (en) | 2003-05-02 | 2003-05-02 | System and method for venting air from a computer casing |
US11/805,514 US20070224928A1 (en) | 2003-05-02 | 2007-05-22 | System and method for venting air from a computer casing |
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Application Number | Title | Priority Date | Filing Date |
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US10/429,161 Continuation US7238104B1 (en) | 2003-05-02 | 2003-05-02 | System and method for venting air from a computer casing |
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US20070224928A1 true US20070224928A1 (en) | 2007-09-27 |
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US11/805,514 Abandoned US20070224928A1 (en) | 2003-05-02 | 2007-05-22 | System and method for venting air from a computer casing |
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Application Number | Title | Priority Date | Filing Date |
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US10/429,161 Expired - Fee Related US7238104B1 (en) | 2003-05-02 | 2003-05-02 | System and method for venting air from a computer casing |
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TWI618479B (en) * | 2016-05-31 | 2018-03-11 | 酷碼科技股份有限公司 | Chassis device and cover plate structure and lifting mechanic |
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