Compressor control system

• US 20040184931A1
• Filed: 01/30/2004
• Published: 09/23/2004
• Est. Priority Date: 02/29/2000
• Status: Abandoned Application

• Current Assignee: Emerson Climate Technologies Incorporated (Emerson Electric Company)
• Original Assignee: Emerson Climate Technologies Incorporated (Emerson Electric Company)
• Inventors: McCroskey, William W., Rajendran, Natarajan, Millet, Hank E.
• Application Number:
  US10/769,704
• Publication Number:
  US 20040184931A1
• Time in Patent Office: Days
• US Class Current: 417/298
• CPC Class Codes: F04C 18/0215 where only one member is moving
• CPC Class Codes: F04C 2240/603 with internal channels for fluid distribution, e.g. hollow shaft
• CPC Class Codes: F04C 2270/02 Power
• CPC Class Codes: F04C 2270/12 Vibration
• CPC Class Codes: F04C 2270/18 Pressure
• CPC Class Codes: F04C 2270/19 Temperature
• CPC Class Codes: F04C 2270/86 Detection
• CPC Class Codes: F04C 2270/90 Remote control, e.g. wireless, via LAN, by radio, or by a wired connection from a central computer
• CPC Class Codes: F04C 23/001 of similar working principle
• CPC Class Codes: F04C 23/008 Hermetic pumps
• CPC Class Codes: F04C 28/26 using bypass channels
• CPC Class Codes: F04C 28/28 Safety arrangements; Monitoring
• CPC Class Codes: F04C 29/0014 with control systems for the injection of the fluid
• CPC Class Codes: F04C 29/02 Lubrication of machines or engines in general F01M; Lubricant separation separation in general B01D
• CPC Class Codes: F04C 29/04 Heating; Cooling of machines or engines in general F01P; Heat insulation heat insulation in general F16L59/00
• CPC Class Codes: G05B 2219/37435 Vibration of machine
• CPC Class Codes: G05B 2223/06 Remote monitoring
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
• CPC Class Codes: G05B 23/0286 Modifications to the monitored process, e.g. stopping operation or adapting control
• CPC Class Codes: G05B 23/0291 Switching into safety or degraded mode, e.g. protection and supervision after failure
• CPC Class Codes: G05B 9/02 : electric

Abstract

The compressor assembly includes a compressor and a controller mounted on the compressor and operable to monitor operational characteristics of the compressor. The controller also controls the compressor unloader, liquid injection, oil injection and/or a crankcase heater.

Claims

1. A compressor assembly comprising:

a compressor;

a compressor unloader operable to control compressor capacity; and

a controller mounted on said compressor and operable to monitor operational characteristics of said compressor and control said compressor unloader.

2. The compressor assembly of claim 1, wherein said compressor unloader includes a solenoid control system, wherein said controller unloads compressor capacity by operating said solenoid control system.

3. The compressor assembly of claim 1, further comprising a liquid injection system for injecting liquid into said compressor, said controller operable to control said liquid injection system.

4. The compressor assembly of claim 1, further comprising an oil injection system operable to control oil injection to said compressor, said controller operable to control said oil injection system.

5. The compressor assembly of claim 1, further comprising a crankcase heater disposed in said compressor and a heater control system operable to control said crankcase heater, said controller operable to control said heater control system.

6. A compressor assembly comprising:

a compressor;

a liquid injection system operable to inject liquid into said compressor; and

a controller mounted on said compressor and operable to monitor operational characteristics of said compressor and control said liquid injection system.

7. The compressor assembly of claim 6, further comprising a solenoid control system, wherein said controller controls said solenoid control system to operate said liquid injection system.

8. The compressor assembly of claim 6, further comprising a compressor unloader operable to unload compressor capacity, wherein said controller controls said compressor unloader.

9. The compressor assembly of claim 6, further comprising an oil injection system operable to control oil injection to said compressor, said controller operable to control said oil injection system.

10. The compressor assembly of claim 6, further comprising a crankcase heater disposed in said compressor and a heater control system operable to control said crankcase heater, said controller operable to control said heater control system.

11. A compressor assembly comprising:

a compressor;

an oil injection system operable to control oil injection to said compressor; and

a controller mounted on said compressor and operable to monitor operational characteristics of said compressor and control said oil injection system.

12. The compressor assembly of claim 11, further comprising a solenoid control system associated with said oil injection system, wherein said controller controls said solenoid control system to operate said oil injection system.

13. The compressor assembly of claim 11, further comprising a compressor unloader operable to unload compressor capacity, wherein said controller controls said compressor unloader.

14. The compressor assembly of claim 11, further comprising a liquid injection system for injecting liquid into said compressor, said controller operable to control said liquid injection system.

15. The compressor assembly of claim 11, further comprising a crankcase heater disposed in said compressor and a heater control system operable to control said crankcase heater, said controller operable to control said heater control system.

16. A compressor assembly comprising:

a compressor;

a crankcase heater disposed in said compressor;

a heater control system operable to control said crank case heater; and

a controller mounted on said compressor and operable to monitor operational characteristics of said compressor and control said heater control system.

17. The compressor assembly of claim 16, further comprising a liquid injection system for injecting liquid into said compressor, said controller operable to control said liquid injection system.

18. The compressor assembly of claim 16, further comprising an oil injection system operable to control oil injection to said compressor, said controller operable to control said oil injection system.

19. The compressor assembly of claim 16, further comprising a compressor unloader operable to unload compressor capacity, wherein said controller controls said compressor unloader.