System And Method For Monitoring Compressor Floodback
First Claim
1. A system comprising:
- a compressor connected to an evaporator;
a suction sensor that outputs a suction temperature signal corresponding to a suction temperature of refrigerant entering the compressor;
a control module connected to the suction sensor, said control module determining a saturated evaporator temperature, calculating a suction superheat temperature based on the saturated evaporator temperature and the suction temperature, monitoring a floodback condition of the compressor by comparing the suction superheat temperature with a predetermined threshold, and, when the suction superheat temperature is less than or equal to the predetermined threshold, increasing a speed of the compressor or decreasing an opening of an expansion valve associated with the compressor.
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Accused Products
Abstract
A system and method for a compressor includes a compressor connected to an evaporator, a suction sensor that outputs a suction temperature signal corresponding to a suction temperature of refrigerant entering the compressor, and a control module connected to the suction sensor. The control module determines a saturated evaporator temperature, calculates a suction superheat temperature based on the saturated evaporator temperature and the suction temperature, and monitors a floodback condition of the compressor by comparing the suction superheat temperature with a predetermined threshold. When the suction superheat temperature is less than or equal to the predetermined threshold, the control module increases a speed of the compressor or decreases an opening of an expansion valve associated with the compressor.
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Citations
20 Claims
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1. A system comprising:
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a compressor connected to an evaporator; a suction sensor that outputs a suction temperature signal corresponding to a suction temperature of refrigerant entering the compressor; a control module connected to the suction sensor, said control module determining a saturated evaporator temperature, calculating a suction superheat temperature based on the saturated evaporator temperature and the suction temperature, monitoring a floodback condition of the compressor by comparing the suction superheat temperature with a predetermined threshold, and, when the suction superheat temperature is less than or equal to the predetermined threshold, increasing a speed of the compressor or decreasing an opening of an expansion valve associated with the compressor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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determining, with a control module, a saturated evaporator temperature of an evaporator connected to a compressor; receiving, with the control module, a suction temperature signal that corresponds to a suction temperature of refrigerant entering the compressor; calculating, with the control module, a suction superheat temperature based on the saturated evaporator temperature and the suction temperature; monitoring, with the control module, a floodback condition of the compressor by comparing the suction superheat with a predetermined threshold; and increasing a speed of the compressor or decreasing an opening of an expansion valve, with the control module, when the suction superheat temperature is less than or equal to the predetermined threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification