SYSTEM AND METHOD FOR CALCULATING PARAMETERS FOR A REFRIGERATION SYSTEM WITH A VARIABLE SPEED COMPRESSOR
First Claim
1. A system comprising:
- a compressor connected to a condenser and an evaporator;
an evaporator sensor that outputs an evaporator signal corresponding to at least one of an evaporator pressure and an evaporator temperature;
an inverter drive that modulates electric power delivered to said compressor to modulate a speed of said compressor;
a control module connected to said inverter drive that receives said evaporator signal, that monitors electrical power data and compressor speed data from said inverter drive, and that calculates at least one of a condenser temperature and a condenser pressure based on said evaporator signal, said electrical power data, and said compressor speed data.
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Accused Products
Abstract
A system and method for calculating parameters for a refrigeration system having a variable speed compressor is provided. A compressor is connected to a condenser and an evaporator. An evaporator sensor outputs an evaporator signal corresponding to at least one of an evaporator pressure and an evaporator temperature. An inverter drive modulates electric power delivered to the compressor to modulate a speed of the compressor. The control module is connected to the inverter drive and receives the evaporator signal, monitors electrical power data and compressor speed data from said inverter drive, and calculates at least one of a condenser temperature and a condenser pressure based on the evaporator signal, the electrical power data, and the compressor speed data.
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Citations
19 Claims
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1. A system comprising:
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a compressor connected to a condenser and an evaporator; an evaporator sensor that outputs an evaporator signal corresponding to at least one of an evaporator pressure and an evaporator temperature; an inverter drive that modulates electric power delivered to said compressor to modulate a speed of said compressor; a control module connected to said inverter drive that receives said evaporator signal, that monitors electrical power data and compressor speed data from said inverter drive, and that calculates at least one of a condenser temperature and a condenser pressure based on said evaporator signal, said electrical power data, and said compressor speed data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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a compressor connected to a condenser and an evaporator; a condenser sensor that outputs a condenser signal corresponding to at least one of a condenser pressure and a condenser temperature; a discharge temperature sensor that outputs a discharge temperature signal corresponding to a temperature of refrigerant exiting said compressor; an inverter drive that modulates electric power delivered to said compressor to modulate a speed of said compressor; a control module connected to said inverter drive that receives said condenser signal and said discharge temperature signal, that monitors electrical power data and compressor speed data from said inverter drive, and that calculates at least one of an evaporator temperature and an evaporator pressure based on said condenser signal, said discharge temperature signal, said electrical power data, and said compressor speed data. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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receiving a condenser signal corresponding to at least one of a condenser pressure and a condenser temperature of a condenser connected to a compressor and an evaporator; modulating a speed of said compressor with an inverter drive configured to modulate electric power delivered to said compressor; receiving electric power data and compressor speed data from said inverter drive; receiving a discharge temperature signal from a discharge temperature sensor, said discharge temperature signal corresponding to a temperature of refrigerant exiting said compressor; calculating at least one of an evaporator temperature and an evaporator pressure based on said condenser signal, said discharge temperature signal, said electrical power data, and said compressor speed data. - View Dependent Claims (16, 17, 18, 19)
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Specification