Heat exchange – Intermediate fluent heat exchange material receiving and... – Liquid fluent heat exchange material
Reexamination Certificate
2000-04-12
2003-07-29
Atkinson, Christopher (Department: 3743)
Heat exchange
Intermediate fluent heat exchange material receiving and...
Liquid fluent heat exchange material
C165S135000, C165S104340, C454S354000, C454S367000, C454S368000, C312S236000
Reexamination Certificate
active
06598668
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an exhaust system for electrical equipment enclosures and, more particularly, to a top cover for electronic equipment enclosures which provide better thermal insulation and noise abatement as well as other benefits.
2. Description of the Related Art
Some types of electronic or related equipment are typically located out of doors. Examples are telecommunications equipment and cable television or data equipment. Often this class of equipment is referred to as “outside plant equipment” and/or “remote terminals.” Also, it is well know that this equipment generates excessive heat and undesirable gas. Further, this outside plant equipment may be located just about any place on the planet, in very warm, cold, wet, dry, and high wind climates and at high and low altitudes.
Over the last several years specialized enclosures or cabinets have been engineered to form a protective environment for the outside plant equipment. Presently, such electronic equipment enclosures or cabinets are constructed with all metal outer panels, a weather sealed chamber for some of the equipment and non-sealed chambers for other portions of the equipment. The metal panels, however, have relatively poor thermal insulation qualities and noise abatement characteristics. When steps are taken to alleviate these problems, costs of manufacture and assembly increase prohibitively. Even without these steps, steel or aluminum panels are expensive and unnecessarily heavy.
The general design of the metal cabinets, and especially heat exchange units located within the cabinets for cooling the heat generated by the equipment, may be appreciated by reference to U.S. Pat. Nos. 5,832,988 and 5,570,740. The climatic and human problems faced by the industry and vendor requirements generated to protect this outside plant equipment are explained in those patents. Important steps have been take to alleviate some problems but problems remain nevertheless.
BRIEF SUMMARY OF THE INVENTION
The present invention improves upon the metal covers now being used for equipment cabinets and a number of advantages are achieved by the improvement. What is described here is an equipment enclosure comprising front, rear and side portions and an interior chamber, a heat exchanger mounted within the interior chamber, a centrifugal fan mounted to the heat exchanger for drawing ambient air, the fan being separated from the interior chamber, a top cover forming a fan casing for the centrifugal fan mounted to the front and rear portions, the top cover including oppositely disposed passageways extending from the fan casing to a periphery of the top cover, and an air chamber in the top cover.
An object of the present invention is to provide a cover for electronic equipment enclosures which has good thermal insulation qualities, good acoustical suppression qualities and sufficient strength for effective use. Another aim of the present invention is to provide a cover for electronic equipment enclosures which is relatively easy and inexpensive to manufacture and which is easy to assemble with the remainder of an enclosure. Still another advantage of the present invention is to provide a cover for electronic equipment enclosures which is relatively light in weight. Further aspects of the present invention are to provide a cover which controls rain water runoff and which handles high wind conditions through the use of a dual exit for heat exchanger exhaust. Yet still other objects of the present invention are to provide a more powerful heat exchanger and an exhaust system that prevents blockage of the exhaust air from the heat exchanger.
A more complete understanding of the present invention and other objects, aspects, aims and advantages thereof will be gained from a consideration of the following description of the preferred embodiment read in conjunction with the accompanying drawings provided herein.
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patent: 5136463 (1992-08-01), Webster
patent: 5570740 (1996-11-01), Flores et al.
patent: 5832988 (1998-11-01), Mistry et al.
patent: 6088225 (2000-07-01), Parry et al.
patent: 6119768 (2000-09-01), Dreier et al.
Cosley Michael R.
Lockhart Julius C.
Atkinson Christopher
Day Jones
Marconi Communications Inc.
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