Anti-condensation control system
AssigneeComputer Process Controls, Inc.
InventorRichard P. Vogh, III
Life of this patent
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Abstract
An anti-condensation control apparatus for a refrigeration device generally includes a sensor module and a control module. The control module receives an input from the sensor module and compares the input to a set point. The control module generates an output indicative of a difference between the input and the set point and updates the output based on the input from the sensor module. A heater modulator controls a heater based on the output from the control module to maintain a temperature of the outer surface of a refrigerated device such that relative humidity adjacent the sensor module is substantially between 90-95 percent relative humidity, or slightly above dew point.
Claims24
An anti-condensation control apparatus for a refrigeration device comprising:
- a sensor module;
- a control module receiving an input from said sensor module and operable to compare said input to a set point and generate an output indicative of a difference between said input and said set point, said control module continuously updating said output based on said input from said sensor module;
- and
- a heater modulator operable to control a heater based on said output to maintain air adjacent said sensor module to a temperature such that relative humidity at said sensor module is generally between 90-95 percent.
An anti-condensation control apparatus for a bank of refrigeration devices comprising:
- a sensor module positioned on a control surface of at least one of the refrigeration devices;
- a control module receiving an input from said sensor module and operable to compare said input to a set point and generate an output indicative of a difference between said input and said set point, said control module continuously updating said output based on said input from said sensor module;
- and
- a heater modulator operable to control a heater of each of the refrigeration devices based on said output to maintain a temperature of air adjacent a control surface of each of the refrigeration devices and the sensor module to a temperature such that relative humidity at the sensor module is generally between 90-95 percent.
A method of controlling condensation on a refrigeration device, the method comprising;
- sensing a condition of air adjacent a sensor associated with the refrigeration device;
- comparing said input to a set point;
- outputting an error based on said comparison;
- processing said error to determine an output between zero and one hundred percent;
- modifying said output between a percent minimum and percent maximum;
- and
- heating a surface of the refrigeration device adjacent said sensor to maintain a temperature of said surface such that the relative humidity at said sensor is approximately 90-95 percent.
A method of controlling condensation on a refrigeration device, the method comprising:
- sensing a condition of air adjacent a sensor associated with the refrigeration device;
- comparing said input to a set point;
- outputting an error based on said comparison;
- processing said error to determine an output between zero and one hundred percent;
- modifying said output between a percent minimum and percent maximum;
- and
- heating a surface of the refrigeration device to maintain a temperature of said air adjacent said sensor such that the relative humidity of said sensor is approximately 90-95 percent.
Dependencies are inferred from the claim text.