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US 5,467,607 AGranted
Air conditioning control system
AssigneeAT&T Corp.
InventorWilliam J. Harvey
Life of this patent
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AssigneeAT&T Corp.
InventorWilliam J. Harvey
Estimating the term…
An air conditioning control system monitors the temperature in the vicinity of electronic equipment using one or more sensors placed either in the equipment area or at the outlet of an air conditioning duct or vent. The temperature sensors supply signals to a microprocessor that is programmed to adjust the output of a system controller such that the amount of cooling provided by the air conditioning system is controlled. Illustratively, when the air conditioning system is restarted after a power failure, the power applied to one or more air conditioning fan motors is controlled, such as by throttling the motors down to an acceptable speed, to in turn control the cooling effect on the equipment. The amount of cool air produced by the air conditioning system is detected by the sensors, thereby forming a feedback control loop. Using this arrangement, electronic equipment failures which occur because of thermal shock due to air conditioning start ups after cooling system outages are reduced, by lowering the rate of temperature change to which electronic equipment is exposed.
A control system for reducing the effects of thermal shock on electrical components located in an area cooled by an air conditioning system, said control system comprising
A temperature control system, comprising
Apparatus for controlling the maximum rate of temperature change to which electronic components located in an area cooled by an air conditioning system are subjected, so that said thermal shock to said components is reduced when operation of said air conditioning system is resumed after an outage, said apparatus comprising
Dependencies are inferred from the claim text.