Valve control in an HVAC system with sensors
US10488126B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37333
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of controlling opening of a valve in an HVAC system is provided. The method includes controlling the opening of a six-way-valve according to a default control mode in dependence of a default sensor signal, the six-way-valve fluidicly coupling an inlet side and an outlet side of the heat exchanger alternatively with a first fluidic circuit in a first default control mode or a second fluidic circuit in a second default control mode; selecting a selected default control mode from the first default control mode and the alternative second default control mode; determining, while controlling the valve in the selected default control mode, whether the sensor signal is faulty; and switching, in case the signal is faulty, to controlling the opening according to a first fallback control mode or an alternative second fallback control mode, where the opening is controlled independently of the faulty sensor signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.