IP Library Granted Patent US 7,617,691
Granted Patent B2
US 7,617,691 · App. 11/740,019 · Granted Nov 17, 2009

Refrigeration system and method of operating the same

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Quick Facts
Patent No.
US 7,617,691
App. No.
11/740,019
Granted
Nov 17, 2009
Kind
B2
Abstract

A refrigeration system including a compressor, condenser, valve, and refrigeration branch, all of which is in fluid communication. The refrigeration branch includes an evaporator coil. The refrigeration system further includes a case adapted to be cooled by the evaporator coil, and a system controller operable to control one or more aspects of the refrigeration system, and a subsystem controller in communication with the system controller. The subsystem controller is operable to control a subsystem having one of the compressor, condenser, valve, refrigeration branch, and case. The method of operating the refrigeration system includes at the subsystem controller, monitoring a parameter of the subsystem, comparing the monitored parameter with a parameter limit, generating an alarm when the parameter is not within the parameter limit, and communicating the alarm to the system controller.

Claims (40)

1. A method of operating a refrigeration system comprising

a compressor, a condenser, and a refrigeration branch including an evaporator coil, all of which being in fluid communication,

a system controller operable to control one or more aspects of the refrigeration system, and

a first compressor control module in communication with the system controller, the first compressor control module being operable to control the compressor, the method comprising the acts of:

configuring the refrigeration system;

replacing the first compressor control module with a second compressor control module;

reconfiguring the refrigeration system, including

communicating first configuration information from the second compressor control module to the system controller, and

communicating second configuration information from the system controller to the second compressor control module; and

wherein at least one of the first communication information and the second communication information comprises at least one of operating parameter information and safety parameter information, wherein the configuring the refrigeration system comprises configuring the first compressor control module, including communicating third configuration information from the system controller to the first compressor control module, wherein the method further comprises maintaining at least a portion of the third configuration information at the system controller, and wherein the second configuration information includes at least a portion of the maintained configuration information.

2. A method as set forth in claim 1 wherein the reconfiguring act occurs automatically after replacing the first compressor control module with a second compressor control module.

3. A method as set forth in claim 1 wherein the replacing the first compressor control module and the communicating first communication information occur at an installed location of the refrigeration system.

4. A method as set forth in claim 1 and further comprising identifying the replacement of the first compressor control module.

5. A method as set forth in claim 4 wherein the system controller identifies the replacement of the first compressor control module.

6. A method as set forth in claim 5 wherein the reconfiguring act occurs automatically after the system controller identifies the replacement of the first compressor control module.

7. A method as set forth in claim 6 wherein the first compressor control module fails between the configuring and replacing acts.

8. A method as set forth in claim 1 wherein the reconfiguring the refrigeration system further includes updating the system controller with the first configuration information.

9. A method as set forth in claim 1 wherein the reconfiguring the refrigeration system further includes updating the second compressor control module with the second configuration information.

10. A method as set forth in claim 1 wherein the operating parameter information comprises control limits.

11. A method as set forth in claim 1 wherein the safety parameter information comprises safety limits.

12. A method of operating a refrigeration system comprising

a compressor, a condenser, and a refrigeration branch including an evaporator coil, all of which being in fluid communication,

a system controller operable to control one or more aspects of the refrigeration system, and

a first compressor control module in communication with the system controller, the first compressor control module being operable to control the compressor, the method comprising the acts of:

configuring the refrigeration system;

replacing the first compressor control module with a second compressor control module;

reconfiguring the refrigeration system, including

communicating first configuration information from the second compressor control module to the system controller, and

communicating second configuration information from the system controller to the second compressor control module; and

wherein at least one of the first communication information and the second communication information comprises at least one of operating parameter information and safety parameter information, wherein the configuring the refrigeration system comprises configuring the first compressor control module, including communicating third configuration information from the first compressor control module to the system controller, wherein the method further comprises maintaining at least a portion of the third configuration information at the system controller, and wherein the second configuration information includes at least a portion of the maintained configuration information.

13. A method as set forth in claim 12 wherein the reconfiguring act occurs automatically after replacing the first compressor control module with a second compressor control module.

14. A method as set forth in claim 12 wherein the replacing the first compressor control module and the communicating first communication information occur at an installed location of the refrigeration system.

15. A method as set forth in claim 12 and further comprising identifying the replacement of the first compressor control module.

16. A method as set forth in claim 15 wherein the system controller identifies the replacement of the first compressor control module.

17. A method as set forth in claim 16 wherein the reconfiguring act occurs automatically after the system controller identifies the replacement of the first compressor control module.

18. A method as set forth in claim 17 wherein the first compressor control module fails between the configuring and replacing acts.

19. A method as set forth in claim 12 wherein the reconfiguring the refrigeration system further includes updating the system controller with the first configuration information.

20. A method as set forth in claim 12 wherein the reconfiguring the refrigeration system further includes updating the second compressor control module with the second configuration information.

21. A method as set forth in claim 12 wherein the operating parameter information comprises control limits.

22. A method as set forth in claim 12 wherein the safety parameter information comprises safety limits.

Assignments (2)
RELEASE OF SECURITY INTEREST IN PATENTS RECORDED AT REEL 027091, FRAME 0111 AND REEL 029568, FRAME 0286 Recorded Apr 1, 2016
From: GENERAL ELECTRIC COMPANY (AS SUCCESSOR IN INTEREST BY MERGER TO GENERAL ELECTRIC CAPITAL CORPORATION), AS ADMINISTRATIVE AGENT
To: HUSSMANN CORPORATION
Reel/Frame 038329/0685 →
NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Oct 20, 2011
From: HUSSMANN CORPORATION
To: GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT
Reel/Frame 027091/0111 →