Refrigeration – Automatic control – Of external fluid or means
Reexamination Certificate
2007-07-11
2010-12-07
Norman, Marc E (Department: 3744)
Refrigeration
Automatic control
Of external fluid or means
C062S183000, C062S209000
Reexamination Certificate
active
07845183
ABSTRACT:
A controller includes a first input that receives a signal indicating an energy consumption value of a compressor, a second input that receives a signal indicating an energy consumption value of a variable speed condenser fan, a third input that receives a signal indicating an ambient temperature, a fourth input that receives a signal indicating a condenser temperature, an output that provides a control signal to the variable speed condenser fan, a memory that stores a temperature difference set-point, and a processor in communication with the inputs, the output and the memory. The processor calculates a difference between the ambient temperature and the condenser temperature, compares the difference with the temperature difference set-point, controls the variable speed condenser fan based on the comparison, monitors the energy consumption values, and modulates the temperature difference set-point to minimize energy consumption.
REFERENCES:
patent: 5040377 (1991-08-01), Braun et al.
patent: 5735134 (1998-04-01), Liu et al.
patent: 5740679 (1998-04-01), Ueno et al.
patent: 6257007 (2001-07-01), Hartman
patent: 6637229 (2003-10-01), Forrest et al.
patent: 7246500 (2007-07-01), Singh et al.
patent: 2003/0005710 (2003-01-01), Singh et al.
patent: 2003/0074908 (2003-04-01), Baker
patent: 2006/0112703 (2006-06-01), Singh et al.
patent: 2006/0130501 (2006-06-01), Singh et al.
International Preliminary Report on Patentability regarding International Application No. PCT/US2005/039022.
IP Australia Examiner's Report dated Aug. 2, 2009 regarding Australian patent application 2005302420.
Written Opinion of the International Search Authority regarding PCT/US2005/39021 dated Mar. 14, 2006.
International Preliminary Report on Patentability regarding PCT/US2005/039021 dated May 1, 2007.
First Examination Report regarding Australian Patent application No. 2005302419 dated Aug. 20, 2009.
Office Action regarding U.S. Appl. No. 11/260,877 dated Mar. 24, 2009.
Office Action regarding U.S. Appl. No. 11/260,877 dated Oct. 16, 2009.
Interview Summary regarding U.S. Appl. No. 11/260,877 dated Jan. 11, 2010.
Office Action regarding U.S. Appl. No. 11/260,877 dated Apr. 12, 2010.
Brown, III Frank C.
Gurkan Ozgur Y.
Mathews Thomas J.
Singh Abtar
Emerson Retail Services Inc.
Harness & Dickey & Pierce P.L.C.
Norman Marc E
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