The present invention relates to a fuel cell housing, and more specifically to a housing for enclosing a fuel cell and which may be readily mounted to an adjacent enclosure.
The operation of fuel cells are well known. Several different designs of fuel cells have emerged, in recent years, and which have increasing levels of reliability and usefulness in industries such as the telecommunications, and in the uninterruptible power supply markets (UPS). Among the most promising fuel cell designs which have emerged in recent years are fully disclosed in U.S. Pat. Nos. 6,030,718 and 6,468,682, the teachings of which are incorporated by reference herein. In each of the patents, noted above, a modular fuel cell has been disclosed, and which includes a number of discreet fuel cell modules which are substantially self-humidifying, and which offer a degree of reliability, ease of maintenance and other advantages not known heretofore when compared with prior art fuel cell stacks. These particular modular fuel cells have become quite useful inasmuch as individual modules may be removed from the fuel cell for repair or replacement while the remaining fuel cells continue in operation to supply electricity to a load. As the usefulness of these fuel cells has become recognized, their applications in industry segments such as the UPS market has increased. In market segments, such as telecommunications, interest in fuel cells has continued to grow inasmuch as the current state of the art for uninterruptible power supplies includes the use of multiple rechargeable batteries. These UPS systems are designed to maintain critical telecommunications circuits in an operational condition when AC power is lost. The UPS market has long recognized that batteries are quite inefficient in certain environmental applications. It is well known, for example, that deep cycling of batteries prematurely shortens the lifetime of the batteries. Moreover, the amount of power that may be delivered from batteries decreases as the ambient environmental temperature falls. Moreover, batteries present an increased maintenance problem as the batteries increase in age.
In addition to the shortcomings noted above, telecommunications equipment that is in need of UPS equipment, frequently are enclosed within cabinets which must meet extremely stringent certification requirements as imposed by the telecommunications industry. These cabinets are often housed or placed in small rooms or spaces where the amount of available floor space for placing other assemblies in cabinets such as might enclose a fuel cell, for example, is either at a minimum or not available at all. Placing a fuel cell, for example, within an existing telecommunications cabinet or enclosure does not appear to be a viable alternative inasmuch as the existing cabinet would need to be altered, by cutting a number of required air vents in the cabinet, to allow the air required for cooling, and the reaction in the fuel cell, to enter the cabinet. These alterations of an existing telecommunications enclosure will typically cause cabinets, such as these, to be decertified. This is generally considered unacceptable to most telecommunications customers.
Therefore, the present invention is directed to a fuel cell housing which addresses these and other issues attendant with the use of a fuel cell.
A first aspect of the present invention relates to a housing for enclosing a fuel cell and which is mounted on an adjacent enclosure having at least one substantially vertically disposed surface, and wherein the housing positions the fuel cell in spaced relation relative to an underlying supporting surface.
Another aspect of the present invention relates to a housing for enclosing a fuel cell and which includes a top surface; a bottom surface; and at least one sidewall mounted on the top and bottom surfaces, and which defines a cavity for receiving the fuel cell, and wherein the housing is mounted on an adjacent enclosure which contains electrical equipment, and which receives electrical power from the fuel cell, and wherein the enclosure rests on an underlying supporting surface and the housing positions the fuel cell in spaced relation relative to the underlying supporting surface.
Still another aspect of the present invention relates to a housing for enclosing a fuel cell, and which includes a top surface having a peripheral edge which is closely adjacent to a supporting surface of an adjacent enclosure, and wherein the adjacent enclosure rests on an underlying supporting surface; a sidewall mounted on the top surface and depending downwardly therefrom, and which further is disposed in spaced relation relative to the supporting surface of the adjacent enclosure; a bottom surface having a peripheral edge which is closely adjacent to the supporting surface of the adjacent enclosure, and wherein the sidewall, and top and bottom surfaces define a cavity which receives a fuel cell, and wherein the housing positions the fuel cell in spaced relation relative to the underlying supporting surface, and wherein the fuel cell, when operational, produces electrical power which is delivered to the enclosure; a source of fuel for the fuel cell, and which is positioned in the enclosure, and which is coupled in fluid flowing relation relative to the fuel cell; and an air movement assembly borne by the housing, and which is coupled in fluid flowing relation relative to the enclosure, and with the fuel cell, and wherein the air movement assembly is operable to selectively withdraw and/or deliver air, in an air stream, to the enclosure, and the fuel cell.
Still another aspect of the present invention relates to a housing for enclosing a fuel cell having a plurality of removable modules, on an adjacent enclosure, and which includes a top surface having a peripheral edge which is mounted thereagainst an exterior sidewall of the adjacent structure; a plurality of sidewalls, each of which is mounted on the top surface, and which depends downwardly therefrom; a bottom surface having a peripheral edge which is mounted thereagainst the sidewall of the adjacent enclosure, and which is further mounted to the respective sidewalls which depend downwardly relative to the top surface, and wherein the top and bottom surfaces, and the plurality of sidewalls define an internal cavity, and wherein the fuel cell having the plurality of removable modules is received in the internal cavity, and wherein the adjacent enclosure rests on a supporting surface, and wherein the bottom surface is disposed in spaced relation relative to the supporting surface; an air movement assembly received in the housing and which is operable to selectively withdraw air from the enclosure, and deliver the withdrawn air, in an air stream to the fuel cell, and wherein the fuel cell, in operation, generates heat energy, and wherein the air stream moves into contact with the fuel cell and removes, at least in part, the heat energy generated by the fuel cell, and wherein the resulting heated air stream is selectively delivered by the air movement assembly back to the enclosure; an electrical conduit extending from the enclosure into the internal cavity of the housing, and wherein the fuel cell, when operational, produces electricity which is supplied to the electrical conduit; and a fuel conduit extending from the enclosure into the internal cavity of the housing, and wherein the fuel conduit delivers a source of fuel to the fuel cell.
These and other aspects of the present invention will become more readily apparent hereinafter.
Preferred embodiments of the invention are described below with reference to the following accompanying drawings.
This disclosure of the invention is submitted in furtherance of the constitutional purposes of the U.S. Patent Laws “to promote the progress of science and useful arts” (Article 1, Section 8).
The housing for enclosing a fuel cell of the present invention is generally indicated by the numeral 10 in
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As should be understood, the electrical equipment 24, when energized, generates heat energy, which in turn, heats the air within the cavity 21 of the enclosure 11. Further, the air movement assembly 53 is operable to withdraw this heated air through the air inlet 50, and deliver this same heated, withdrawn air, from the enclosure 11, to the fuel cell 60 so as to heat the fuel cell when the ambient environmental temperatures are low. Conversely, and as noted above, the fuel cell generates heat energy during operation, and this heat energy is operable to heat the first and second air streams 67 and 68. In the arrangement as shown, the air movement assembly 53 is operable to deliver these respective heated air streams, at least periodically into the enclosure 11 so as to heat, at least in part, the electrical equipment 24 contained within the enclosure 11 during periods of low ambient temperature. In the arrangement as shown, the air movement assembly 53 is rendered operable to withdraw air, alternatively, from the enclosure 11, or from the ambient environment, and further is operable to deliver air which has passed through, or by the fuel cell 60, back to the enclosure 11, or alternatively back to the ambient environment or combinations of the above.
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The operation of the described embodiment of the present invention is believed to readily apparent and is briefly summarized at this point.
In its broadest aspect, the present invention relates to a housing 10 for enclosing a fuel cell 60, and which is mounted on an adjacent enclosure 11 having at least one substantially vertically disposed surface 14. The housing 10 positions the fuel cell 60 in spaced relation to an underlying supporting surface 12.
Another aspect of the present invention relates to a housing 10 for enclosing a fuel cell 60, and which includes a top surface 30, a bottom surface 33, and at least one sidewall 32, mounted on the top and bottom surfaces, and which defines a cavity 36 for receiving the fuel cell 60. The housing 10 is mounted on an adjacent enclosure 11, and which contains electrical equipment 24, and which receives electrical power from the fuel cell 60. The enclosure 11 sits on an underlying supporting surface 12, and the housing 10 positions the fuel cell 60 in spaced relation relative to the underlying supporting surface 12.
Yet another aspect of the present invention relates to a housing 10 for enclosing a fuel cell 60, and which includes a top surface 30 having a peripheral edge 31, and which is closely adjacent to a supporting surface 12 of an adjacent enclosure 11. The adjacent enclosure 11 rests on an underlying supporting surface 12. A sidewall 32 is mounted on the top surface 30, and depends downwardly therefrom, and which further is disposed in spaced relation relative to the supporting surface 12 of the adjacent enclosure 11. A bottom surface 33 is provided, and which has a peripheral edge 34, and which is closely adjacent to the sidewall 14 of the adjacent enclosure 11. The sidewall 32, and top and bottom surfaces 30 and 33 define a cavity 36 which receives a fuel cell 60. The housing 10 positions the fuel cell in spaced relation relative to the underlying supporting surface 12. The fuel cell 60, when operational, produces electrical power which is delivered to the enclosure 11. A source of fuel 45 for the fuel cell 60, is provided, and which is positioned in the enclosure 11, and which is coupled in fluid flowing relation relative to the fuel cell 60. Still further, an air movement assembly 53 is provided and which is coupled in fluid flowing relation relative to the enclosure 11, and with the fuel cell 60. The air movement assembly is operable to selectively withdraw and/or deliver air, in an air stream 66, to the enclosure, and the fuel cell 60, respectively.
Yet still another aspect of the present invention relates to a housing 10 for enclosing a fuel cell 60 having a plurality of removable modules 61, on an adjacent enclosure 11, and which includes, a top surface 30, having a peripheral edge 31, and which is mounted thereagainst an exterior sidewall 14 of the adjacent structure 11. The housing further has a plurality of sidewalls 32, each of which is mounted on the top surface 30, and which depends downwardly therefrom. Still further, the housing 10 includes a bottom surface 33 which is mounted thereagainst the sidewall 14 of the adjacent enclosure 11. This bottom surface is further mounted to the respective sidewalls 32, and which depend downwardly relative to the top surface 30. The top and bottom surfaces 30 and 33, and the plurality of sidewalls 32 define the internal cavity 36. The fuel cell 60 includes a plurality of removable modules 61 which are received in the internal cavity 36. The bottom surface 33 of the housing is disposed in spaced relation relative to the supporting surface 12. An air movement assembly 53 is provided, and which is received in the housing 10, and which is operable to selectively withdraw air from the enclosure 11, and deliver the withdrawn air, in an air stream 66 to the fuel cell. The fuel cell 60, in operation, generates heat energy. As presently arranged, the air stream 66 moves into contact with the fuel cell and removes, at least in part, the heat energy generated by the fuel cell. The resulting heated air stream is then selectively delivered by the air movement assembly 53 back into the enclosure 11. An electrical conduit 71 is provided and which extends from the enclosure 11, into the internal cavity 36 of the housing 10. The fuel cell 60, when operational, produces electricity which is supplied to the electrical conduit 71 and which powers the individual pieces of the electronic equipment 24 which are enclosed within the enclosure 11. A fuel conduit 42 is provided and which extends from the enclosure 11 and into the internal cavity 36 of the housing 10. The fuel conduit 42 delivers a source of fuel 45 to the fuel cell 60.
As seen in the drawings, the present housing 10 can be mounted on a fixed sidewall 14, or on an access door 20 of an existing enclosure 11 thereby preserving precious floor space in otherwise cramped rooms or spaces where these enclosures 11 are typically placed.
Therefore it will be seen that the housing 10 of the present invention provides many advantages over the prior art practices and allows a fuel cell such as seen the prior art patents referenced in this application to be utilized as an effective UPS system for telecommunications and other critical electronic equipment.
In compliance with the statute, the invention has been described in language more or less specific as to structural and methodical features. It is to be understood, however, that the invention is not limited to the specific features shown and described, since the means herein disclosed comprise preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted in accordance with the doctrine of equivalents.