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Cooling abnormality detection system for electronic equipment

  • US 5,333,676 A
  • Filed: 11/08/1993
  • Issued: 08/02/1994
  • Est. Priority Date: 09/21/1988
  • Status: Expired due to Fees
First Claim
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1. A cooling abnormality detection system for external electronic equipment, including a heat exchanger for performing heat exchange of a liquid coolant supplied from the external electronic equipment, a coolant tank for absorbing expansion of the liquid coolant supplied from said heat exchanger, a pump for supplying the liquid coolant stored in the coolant tank to the external electronic equipment again, and a protection unit for detecting a cooling abnormality of the liquid coolant in said electronic equipment, said protection unit being arranged to stop power supply to a given electronic equipment when the cooling abnormality of said given electronic equipment is detected, thereby preventing reliability degradation and breakdown of said electronic equipment, and said protection unit comprising:

  • temperature measuring means for causing a plurality of temperature sensors arranged in each of said electronic equipment to measure temperatures of powered electronic equipment;

    temperature/temperature difference measuring means for receiving a measured temperature from said temperature measuring means, for outputting a sensor failure signal when a difference between measured temperatures of said plurality of temperature sensors exceeds a first predetermined value, and for outputting an abnormal temperature signal when the difference between the measured temperatures from said plurality of temperature sensors falls within the first predetermined value and all of the measured temperatures from said plurality of temperature sensors exceed a second predetermined value;

    sensor failure alarm means for receiving the sensor failure signal and transmits the sensor failure signal to said electronic equipment; and

    abnormal temperature alarm means for receiving the abnormal temperature signal and transmits the abnormal temperature signal to said electronic equipment.

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