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US 11,686,520 B2Granted
System for transport refrigeration control of multiple compartments
AssigneeCarrier Corporation
InventorJason R. Kondrk
Life of this patent
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Abstract
An example transport refrigeration system includes first and second refrigeration circuits configured to cool first and second transport compartments, respectively. An electric machine powers the first and second refrigeration circuits. A controller is configured to monitor a temperature of the electric machine, and reduce a cooling capacity of a selected one of the first and second refrigeration circuits based on the temperature exceeding a first threshold.
Claims22
A transport refrigeration system, comprising:
- first and second refrigeration circuits configured to cool first and second transport compartments, respectively;
- an electric machine that powers the first and second refrigeration circuits;
- and
- a controller configured to:
- monitor a temperature of the electric machine;
- reduce a cooling capacity of a selected one of the first and second refrigeration circuits based on the temperature exceeding a first threshold;
- and
- in a first control mode:
- determine a difference between a respective current temperature and a respective setpoint temperature of each of the transport compartments;
- and
- select the refrigeration circuit whose associated transport compartment has the greatest difference as the selected refrigeration circuit.
8 more elements
A method of controlling a transport refrigeration system, comprising:
- powering first and second refrigeration circuits from an electric machine, wherein the first and second refrigeration circuits cool respective transport compartments;
- monitoring a temperature of the electric machine;
- reducing a cooling capacity of a selected one of the first and second refrigeration circuits based on the temperature exceeding a first threshold;
- and
- in a first control mode:
- determining a difference between a respective current temperature and a respective setpoint temperature of each of the transport compartments;
- and
- selecting the refrigeration circuit whose associated compartment has the greatest difference as the selected refrigeration circuit.
5 more elements
Dependencies are inferred from the claim text.