Motor frame cooling with hot liquid refrigerant and internal liquid
First Claim
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1. An electric machine cooling apparatus comprising;
- an electric machine having a frame, stator, and rotor, at least one refrigerant tube disposed in said electric machine, said refrigerant tube in thermal communication with said electric machine, an internal liquid disposed inside the frame of said electric machine, said internal liquid in thermal communication with said electric machine and said at least one refrigerant tube, wherein the refrigerant in,said at least one refrigerant tube is at least partially a hot liquid refrigerant supplied from a floating refrigerant loop.
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Abstract
This invention presents the device and method for cooling electric machines with hot liquid refrigerant in a floating refrigerant loop and using an internal liquid such as oil for enhancing the cooling effects. The electric machine cooling apparatus has at least one refrigerant tube disposed in the electric machine. The refrigerant tube is in thermal communication with the electric machine. An internal liquid is disposed inside the frame of the electric machine. The internal liquid is in thermal communication with the electric machine and at least one refrigerant tube. The refrigerant is at least partially a hot liquid refrigerant supplied from a floating refrigerant loop.
41 Citations
26 Claims
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1. An electric machine cooling apparatus comprising;
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an electric machine having a frame, stator, and rotor, at least one refrigerant tube disposed in said electric machine, said refrigerant tube in thermal communication with said electric machine, an internal liquid disposed inside the frame of said electric machine, said internal liquid in thermal communication with said electric machine and said at least one refrigerant tube, wherein the refrigerant in,said at least one refrigerant tube is at least partially a hot liquid refrigerant supplied from a floating refrigerant loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for cooling an electric machine comprising;
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flowing refrigerant through at least one refrigerant tube disposed in an electric machine having a frame, stator, and rotor;
said refrigerant tube in thermal communication with said electric machine,slinging an internal liquid disposed inside the frame of said electric machine, said internal liquid in thermal communication with said electric machine and said at least one refrigerant tube, wherein the refrigerant in said at least one refrigerant tube is at least partially a hot liquid refrigerant supplied from a floating refrigerant loop. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification