HVAC control using modulated evaporator outlet temperature
US7424344B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | May 22, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/62
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A vehicle climate control system operates an evaporator at a minimum temperature adjusted by a temperature offset. The control system determines a desired temperature and a blend potentiometer position that is indicative of the desired temperature. The control system determines a target temperature for the evaporator according to the blend potentiometer position, and calculates the temperature offset according to the target temperature and the blend potentiometer position. A blend door position is controlled according to the blend potentiometer position, the target temperature, the temperature offset, and heater core air temperature in order to optimize the operation of the evaporator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.