DSM ENABLING OF ELECTRO MECHANICALLY CONTROLLED REFRIGERATION SYSTEMS
First Claim
1. A system for reducing the peak power consumption by a refrigeration system, comprising;
- a first electromechanical cold control calibrated to a first temperature setpoint;
a second electromechanical cold control calibrated to a second temperature setpoint, said first and second cold controls each having a setpoint selector member, said setpoint selector members being operatively linked such that adjustment of one results in a corresponding adjustment of the other;
a DSM module responsive to demand state signals from an associated utility indicative of at least a peak demand and an off peak demand state; and
a DSM switching device responsive to said DSM module and operative to selectively render one or the other of said cold controls effectively operative to control the cooling system depending upon the demand state signal.
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Accused Products
Abstract
An energy saving defrost control system for reducing power consumption of an electromechanically controlled refrigerator is provided. The system includes a defrost timer adapted to control a compressor according to an established run time, a defrost heater control operatively connected to the defrost timer and configured to activate a defrost heater in response to a timeout by the defrost timer, a DSM module responsive to demand state signals from an associated utility indicative of at least a peak demand and off peak demand state, and a time delay latching relay having a timer and configured to switch to one of a low position and a high position based on the demand state signal.
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Citations
22 Claims
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1. A system for reducing the peak power consumption by a refrigeration system, comprising;
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a first electromechanical cold control calibrated to a first temperature setpoint; a second electromechanical cold control calibrated to a second temperature setpoint, said first and second cold controls each having a setpoint selector member, said setpoint selector members being operatively linked such that adjustment of one results in a corresponding adjustment of the other; a DSM module responsive to demand state signals from an associated utility indicative of at least a peak demand and an off peak demand state; and a DSM switching device responsive to said DSM module and operative to selectively render one or the other of said cold controls effectively operative to control the cooling system depending upon the demand state signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for reducing peak power consumption in an electromechanically controlled refrigerator having at least one compartment, said method comprising:
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mechanically linking a first cold control having a first adjustable switch to a second cold control having a second adjustable switch; calibrating the first cold control to a first temperature set point and the second cold control to a second temperature set point, wherein said second temperature set point is higher than said first temperature set point; and opening and closing a DSM switching device in response to a signal received from an associated DSM module indicative of at least a peak demand and an off peak demand state of an associated utility, wherein opening said DSM switching device shifts control from said first cold control to said second cold control, causing the temperature to be controlled to a higher setpoint temperature. - View Dependent Claims (8, 9, 10, 12)
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11. (canceled)
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13. A system for reducing the power consumption in an electromechanically controlled refrigerator during periods of peak power demand, including at least a freezer compartment and a fresh food compartment, said system comprising;
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a cold control device being calibrated to a temperature set point; a bourdon tube having a first end operatively connected to said cold control, and a second end, opposite said first end, located in one of said freezer and said fresh food compartment; a heat source operative to supply a metered amount of heat to said bourdon tube; and a DSM switching device operatively controlled by an associated DSM module, wherein said DSM module is configured to receive a signal indicative of at least one of a peak or non-peak demand period of an associated utility. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. (canceled)
Specification