SYSTEM AND METHOD FOR MONITORING OVERHEAT OF A COMPRESSOR
First Claim
Patent Images
1. A system comprising:
- a compressor connected to an evaporator;
a suction sensor that outputs a suction signal corresponding to a temperature of refrigerant entering said compressor;
a control module connected to said evaporator sensor and said suction sensor that determines an evaporator temperature, that calculates a suction superheat temperature based on said evaporator temperature and said suction signal, that monitors an overheat condition of said compressor by comparing said suction superheat with a predetermined suction superheat threshold, and that adjusts at least one of a speed of said compressor and an expansion valve associated with said compressor based on said monitoring.
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Abstract
A system and method for monitoring an overheat condition of a compressor is provided. A compressor connected to an evaporator. A suction sensor outputs a suction signal corresponding to a temperature of refrigerant entering the compressor. A control module is connected to the evaporator sensor and the suction sensor and determines an evaporator temperature, calculates a suction superheat temperature based on the evaporator temperature and the suction signal, and monitors an overheat condition of the compressor by comparing the suction superheat with a predetermined suction superheat threshold.
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Citations
12 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 signal corresponding to a temperature of refrigerant entering said compressor; a control module connected to said evaporator sensor and said suction sensor that determines an evaporator temperature, that calculates a suction superheat temperature based on said evaporator temperature and said suction signal, that monitors an overheat condition of said compressor by comparing said suction superheat with a predetermined suction superheat threshold, and that adjusts at least one of a speed of said compressor and an expansion valve associated with said compressor based on said monitoring. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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determining an evaporator temperature of an evaporator connected to a compressor; receiving a suction signal that corresponds to a temperature of refrigerant entering said compressor; calculating a suction superheat temperature based on said evaporator temperature and said suction signal; monitoring an overheat condition of said compressor by comparing said suction superheat with a predetermined suction superheat threshold. adjusting at least one of a speed of said compressor and an expansion valve associated with said compressor based on said monitoring. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification