Inductor devices – With temperature modifier – Ventilating passages
Reexamination Certificate
2005-06-21
2005-06-21
Donovan, Lincoln (Department: 2832)
Inductor devices
With temperature modifier
Ventilating passages
C336S055000, C336S057000, C336S058000, C029S890030, C029S602100
Reexamination Certificate
active
06909349
ABSTRACT:
A system (27) for reducing the temperature of cooling oil for a power transformer (12) includes a heat exchanger (44) interposed in the cooling oil system. The heat exchanger (44) relies upon a liquid-to-liquid exchange of heat from the heated oil to a coolant flowing through the heat exchanger. In one embodiment, the coolant provided to the heat exchanger is obtained from an absorption chiller (65). Heat energy is provided to the chiller (65) from a heat storage device (80). In a specific embodiment, the heat storage source (80) can be a phase change material device. In a preferred cooling system, a programmable controller (55) determines the activation and operation of the system. The controller (55) can sense transformer or cooling oil temperature to trigger activation. In a preferred embodiment, the controller (55) compares a current temperature history against a temperature profile to anticipate increased cooling requirements. In certain embodiment, excess, off-peak or waste heat from the transformer (12) itself is provided to the heat storage device (80) or to the phase change heat exchanger.
REFERENCES:
patent: 3579162 (1971-05-01), Savkar
patent: 4456899 (1984-06-01), Matthes et al.
patent: 4936109 (1990-06-01), Longardner
International Preliminary Examination Report (IPER) for PCT/US00/31810, established Mar. 14, 2002.
IP Australia: Examiner's First Report on Australian Patent Application No. 19224/01, mailed Dec. 18, 2003.
The Patent Office of the State Intellectual Property Office of the P. R. of China: First Office Action on Patent Application No. 00815793.6, issued Jan. 2, 2004.
Longardner Robert L.
Visnesky, Jr. Anthony M.
Daspin & Aument, LLP
Donovan Lincoln
Perkins Jefferson
Poker Jennifer A.
Trexco, LLC
LandOfFree
Apparatus and method for cooling power transformers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for cooling power transformers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for cooling power transformers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3517469