The present invention relates to a rack door transition kit with universal bracket for connecting a cooling door to different rack configurations.
It is generally well known that electronic devices such as computers generate heat when they are running, and that the device can be damaged should the temperature of the device be allowed to rise above a certain threshold. It is therefore important to ensure the device has a way of dissipating the generated heat so as to prevent overheating thereof.
Many of today's industries and businesses require a host of computer servers and electrical equipment that is located in what is referred to as a server room or telecommunication equipment room. Individual servers or other electronic devices may be arranged in a server rack which typically comprises a frame having a plurality of shelves arranged in vertically spaced relationship with each server or other electronic device positioned upon a respective shelf. The shelves are vertically spaced from each other to allow air to circulate between each server in a rack.
Manufacturers of the servers or other electronic devices make the housing with openings allowing air to travel through the device. In this way, heated air generated from the electronic components located within the housing is allowed to escape through the openings in the housing. Some electronic device manufacturers further incorporate fans near the housing openings to actively draw the heated air out of the housing. Other heat management strategies may be utilized on or adjacent the housing such as fins or the like which act as heat sinks to help dissipate heat from the device.
The problem of electronic device heat management becomes more troublesome and acute when dealing with very large dedicated server rooms or rooms with a high density of equipment which generate significant amounts of heat. In these settings, auxiliary heat management tactics are required such as using evaporator/condenser type air conditioning units to cool the air within the server room. Such air conditioning units are referred to in the industry as “CRAC” units, which stands for “Computer Room Air Conditioning”. While CRAC units may do the job of keeping the servers at a safe operating temperature, they are not very efficient in that they require high amounts of electricity to keep the entire volume of air within the server room cool. Maintaining the cool air in a large server room can thus be a significant, ongoing cost which can increase exponentially as more server racks are added to the room, rack densities are increased and/or the room size is expanded. For industries such as telecommunication companies which require expansive server rooms, sometimes approaching the size of football fields, the operational costs of running CRAC units becomes financially unworkable and alternative, cheaper cooling strategies are necessary.
In response to the need for more efficient cooling strategies, cooling units and assemblies have been proposed which are placed in close proximity to the individual servers. In this strategy, the heated air being ejected from the device housing is cooled prior to it being allowed to mix with the ambient air in the room. Examples of such units and assemblies may be seen in the following patents:
The auxiliary cooling unit may be incorporated into a door located at what is considered the rear of the server rack (the side that the rear of the electronic components face). Such a cooling unit is typically referred to as a “cooling door”. Such a cooling door may be seen in commonly owned pending patent application Ser. Nos. 61/649,577 and 13/666,437, the entire disclosures of which are incorporated herein by reference. These cooling doors are preferably mounted onto the server rack using a hinged connection. Thus, when an operator needs to gain access to the rear of a server, the cooling door can simply be hinged open thereby obviating the need to physically remove the cooling door from the rack.
One problem with mounting of the cooling doors to server racks, however is that, since there is no standard in the industry regarding hinge hole location, size and type (threaded/non-threaded, etc.) on server racks, one must develop a custom cooling door attachment solution for reach different type of server rack. There therefore exists a need for a universal cooling door to server mounting kit which allows for quick and easy connection of a cooling door to most server rack configurations.
The present invention addresses the above need by providing a rack door transition kit with universal bracket for connecting a cooling door to a server rack.
In a first embodiment, the present invention provides an apparatus for mounting a cooling door having predefined cooling door attachment points to any one of a variety of electronics equipment racks having an enclosure with first and second equipment mounting posts located within the enclosure with the mounting posts having a plurality of longitudinally spaced equipment mounting holes formed therethrough. The apparatus comprises a rack door transition kit for mounting the cooling door to the enclosure, the kit comprising a preferably (but not necessarily) rectangular frame having first and second spaced, vertically extending frame members each having a top and bottom end and, in a first embodiment, first and second spaced, horizontally extending frame members each having a right and left end interconnecting the first and second vertically extending frame members at the top and bottom ends thereof, respectively, and thereby defining the rectangular frame member.
The first and second vertically extending frame members have cooling door mounting holes formed therethrough at locations which may align with the cooling door attachment points. First and second flanges are attached to a respective one of the first and second vertically extending frame members and each of the flanges have an elongated slot extending in spaced, parallel relation to its respective vertically extending frame member. The flanges may be integrally formed with the vertically extended frame members or may each be formed as a separate component which is secured to the frame members by a removable fastener or a fixed joint such as a weld. Alternatively, rather than being formed in a flange, the slots may be formed directly in the frame member.
First and second universal mounting brackets interconnect the rectangular frame, which is located outside the equipment rack enclosure, to the first and second equipment mounting posts which are located within the equipment rack enclosure. The first and second universal mounting brackets each comprise a first bracket part having opposite first and second ends, the first end having at least one mounting member adapted to removably mount to a selected one or more of the equipment mounting holes in the first and second equipment mounting posts, respectively, and a second bracket part having opposite first and second ends, the first end having at least one mounting member adapted to removably mount to a respective flange at a selected point along the length of the elongated slot thereof.
The first and second bracket parts are adapted to cooperatively engage with one another in a manner allowing selective adjustment of the first and second bracket parts toward and away from each other to selectively adjust the length of the bracket which, in turn, dictates the distance between the rectangular frame and the first and second equipment mounting posts.
In another embodiment, third and fourth flanges, each also having an elongated slot, are attached to the second vertically extending frame member proximate the top end of a respective vertical frame member. Each of the elongated slots extends in spaced, parallel relation to its respective vertically extending frame member. Third and fourth universal mounting brackets, the same or similar to the first and second mounting brackets which are located adjacent the bottom ends of the vertical frame members, interconnect the frame members to the equipment mounting posts.
In yet a further embodiment, the present invention provides a method for mounting a cooling door having predefined cooling door attachment points to any one of a variety of electronics equipment racks having an enclosure with first and second equipment mounting posts located within the enclosure. The mounting posts have a plurality of longitudinally spaced equipment mounting holes formed therethrough. The method comprises the steps of securing a first and second mounting bracket to the first and second mounting posts, respectively; securing a first and second vertically extending frame member to the first and second mounting brackets, respectively, wherein the first and second vertically extending frame members have cooling door mounting holes formed therethrough; and mounting the cooling door to at least one of the vertically extending frame members wherein the cooling door attachment points align with the cooling door mounting holes.
The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become apparent and be better understood by reference to the following description of the invention in conjunction with the accompanying drawing, wherein:
Referring now to the drawings, there is seen in
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The face of each vertically extending frame member 20a, 20b may further include a cutout 23 for mating with an associated latch or handle (see
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In a preferred embodiment, one or both of bracket bodies 36a and 36b are manufactured to have a generally U-shaped cross-section with one bracket body resting completely within the second bracket body. The generally U-shaped cross-section prevents pivoting of the bracket bodies about locking element 34a by constraining one bracket body within the parallel arms of the second bracket body. While shown and described as bracket body 36a being equipped with locking element 34a engaged with channel 38b of bracket body 36b, it is also envision that these elements may be reversed such that bracket body 36a incorporates a channel while bracket body 36b has an attached locking element. As shown in
To adjustably secure vertical frame members 20a and 20b to server rack side walls 10a and 10b, respectively, bracket body 36a of first bracket part 30a has a mounting member 32a located at a first end for removably mounting the first bracket part to the mounting post within the server rack. In this particular embodiment, mounting member 32a has a flange with integrated mounting element 33a. Mounting element 33a may be one or more recesses that are sized and positioned to mate with mounting post holes (14a) within a mounting post (14), with mounting member 32a (and by extension first bracket part 30a) secured to the mounting post by fasteners 16a. Ideally, fasteners 16a simultaneously secure shelf 16 and mounting member 32a, however, it is further envisioned that mounting member 32a and shelf 16 may be secured with respective, dedicated fasteners. While shown and described as a recess, additional mounting elements are envisioned and are to be considered within the scope of the present invention. Additional mounting elements may include, but are not limited to, through-holes of various geometries, including holes with internal threads.
To removably secure the universal mounting bracket to the vertical frame member, second bracket part 30b includes a mounting member 32b at a first end that is adapted to removably attach second bracket part 30b to flange 24 located on a vertical frame member (20b) by way of mounting element 33b. In a preferred embodiment, mounting element 33b is a threaded member adapted to snuggly pass through a portion of elongated slot 24a within flange 24. A nut 35, along with a washer 37, is threaded onto locking element 33b thereby removably affixing second bracket part 30b to flange 24, and therefore to the vertical frame member 10a or 10b. Elongated slot 24a allows for vertical position adjustment of mounting member 32b, and by extension bracket body 36b and bracket body 36a, along the vertical frame element depending upon the placement of mounting member 32a and fasteners 16a on the mounting post within the server rack so that the universal mounting bracket is generally parallel with the plane of the server rack base or floor. In a preferred embodiment, door frame 20 is secured to server rack 10 through two universal mounting brackets, one along each side wall mounted onto a respective mounting post, and more preferably toward the bottom end of each respective vertical frame member. In an alternative embodiment, such as one which utilizes vertical extending frame members 20a and 20b but not horizontal members 20c and 20d, four universal mounting brackets are utilized with two mounting brackets mounted along each side wall on a respective post. Preferably, each side wall has one mounting bracket located proximate the bottom end of its respective vertical frame member with the second mounting bracket located proximate the top end of the vertical frame member.
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While this method and apparatus has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as described.