Motor cooling applications

1. A vapor compression cooling system, comprising:

A compressor;

A motor;

A condenser;

An evaporator;

A refrigerant;

A housing;

A cavity within the housing, the motor being within the cavity within the housing

a first fluid circuit connected in fluid communication with the condenser, the housing having a first fluid connection in fluid communication with the cavity to receive refrigerant from the condenser into the cavity, the housing having a second fluid connection in fluid communication with the cavity to deliver refrigerant from the cavity to a heat exchanger for a heat transfer relationship with a heat-generating component, the heat-generating component being positioned heat-generating component being a variable speed drive component, wherein refrigerant in heat transfer relationship with the heat-generating component is returned directly to the condenser.

2. The system of claim 1 , wherein the cavity contains electromagnetic bearings to radially support a motor shaft.

3. The system of claim 1 , wherein the compressor is a multi-staged compressor.

4. The system of claim 1 , comprising a control device in fluid communication between the condenser and the first connection.

5. The system of claim 1 , comprising tubing extending longitudinally inside the cavity.

6. The system of claim 5 , wherein the tubing is positioned in close proximity with at least one salient pole of a motor stator.

7. The system of claim 1 , wherein the housing includes a plurality of grooves formed within the cavity.

8. The system of claim 7 , wherein the plurality of grooves are helically arranged.

9. The system of claim 8 , comprising tubing positioned in the plurality of grooves.

10. The system of claim 9 , comprising a second fluid circuit connected in fluid communication with the condenser, the housing having a third connection in fluid communication with the cavity to deliver a refrigerant from the condenser into the cavity, the housing having a fourth connection in fluid communication with the cavity and in fluid communication with the second circuit.

11. The system of claim 10 , wherein the first fluid circuit and the second fluid circuit are independent from each other.

12. The system of claim 10 , wherein the first fluid circuit provides liquid refrigerant to the cavity and the second fluid circuit provides vapor refrigerant to the motor.

13. The system of claim 10 , wherein the second fluid circuit includes a control device in fluid communication with and positioned between the condenser and a third connection.

14. The system of claim 10 , wherein the second fluid circuit includes a pump in fluid communication with and positioned between the condenser and the third connection.

15. The system of claim 10 , wherein the second fluid circuit provides liquid refrigerant to the cavity.

16. The system of claim 15 , wherein the second fluid circuit provides vapor refrigerant to the cavity.

17. A vapor compression cooling system, comprising:

A compressor;

A motor, powering the compressor;

An expansion valve;

An evaporator;

A housing;

A cavity within the housing, the motor being within the cavity within the housing;

the housing including a plurality of groves formed within the cavity; and

a first fluid circuit is connected in fluid communication with the condenser, the housing having a first connection in fluid communication with the cavity to receive refrigerant from the condenser into the cavity, the housing having a second connection in fluid communication with the cavity to deliver refrigerant from the cavity to a heat exchanger for a heat transfer relationship with a heat-generating component associated with operation of the vapor compression system component the heat-generating component being positioned exterior of the housing, the heat-generating component being a variable speed drive component, wherein refrigerant in heat transfer relationship with the heat-generating component is returned directly to the condenser.