Method and apparatus for controlling capacity of a multiple-stage cooling system
US4951475A · kind A · utility
69Cited by
58References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Jan 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for controlling the capacity of a multi-stage cooling system is disclosed. The system of the invention utilizes a plurality of commonly piped compressors having common suction load wherein at least one compressor being a variable speed compressor, means for establishing a single predetermined cooling stage "cut-in" pressure and a single predetermined cooling stage "cut-out" pressure, a plurality of condenser fans and a microprocessor based control means for controlling the operation of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.