Refrigeration monitoring system and method
First Claim
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1. A system comprising:
- a refrigeration circuit including a condenser and a compressor having a motor;
a first sensor producing a signal indicative of a detected condenser temperature of said condenser;
a second sensor producing a signal indicative of one of current and power drawn by said motor; and
processing circuitry in communication with said first sensor and said second sensor and operable to determine a derived, non-measured condenser temperature by referencing said current or power signal on a map of current or power versus condenser temperature, said processing circuitry operable to compare said derived condenser temperature to said detected condenser temperature to determine a charge level of said refrigeration circuit.
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Abstract
A system is provided and may include a refrigeration circuit having a condenser, a first sensor producing a signal indicative of a detected condenser temperature of the condenser, and processing circuitry in communication with the first sensor. The processing circuitry may determine a derived condenser temperature independent from information received from the first sensor and may compare the derived condenser temperature to the detected condenser temperature to determine a charge level of the refrigeration circuit.
672 Citations
19 Claims
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1. A system comprising:
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a refrigeration circuit including a condenser and a compressor having a motor; a first sensor producing a signal indicative of a detected condenser temperature of said condenser; a second sensor producing a signal indicative of one of current and power drawn by said motor; and processing circuitry in communication with said first sensor and said second sensor and operable to determine a derived, non-measured condenser temperature by referencing said current or power signal on a map of current or power versus condenser temperature, said processing circuitry operable to compare said derived condenser temperature to said detected condenser temperature to determine a charge level of said refrigeration circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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detecting by a first sensor a temperature of a condenser; communicating said detected condenser temperature to processing circuitry; deriving by said processing circuitry a non-measured temperature of said condenser by referencing one of current and power drawn by a compressor on a map of current or power versus condenser temperature; comparing by said processing circuitry said derived condenser temperature with said detected condenser temperature; and determining one of an overcharge condition, an undercharge condition, and an adequate-charge condition based on said comparing. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification