Humidity control for variable speed air conditioner
US5062276A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Sep 20, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioner system of the type having a variable speed compressor and an indoor heat exchanger having a variable speed fan for controlling the rate of air flow over the evaporator coil has a controller which employs the benefits of variable speed compressors and the variable indoor fan to improve humidity control. During a normal cycle when the relative humidity is below a setpoint, the compressor speed is varied as a function of cooling demand between a minimum compressor speed and full compressor speed. The fan speed is varied generally linearly with the compressor speed between a minimum fan speed and full fan speed. When the humidity level is above the setpoint, the relationship between compressor speed is altered to increase the amount of dehumidification. The minimum compressor speed is increased, while the minimum air flow speed remains the same. The compressor speed is then controlled between this higher minimum speed and full speed, while the fan speed is controlled between minimum fan speed and full fan speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.