Control of a heating and cooling system for a multi-level space
US7748639B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2009 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Mar 12, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heating and cooling system for a multi-level space is provided that comprises at least one lower level return air duct and at least one upper level return air duct, and a thermostat for controlling the operation of the heating or cooling system through either a low voltage cooling activation signal or a low voltage heating activation signal. The heating and cooling system further comprises a first motorized damper having connection means for receiving at least a low voltage heating activation signal from the thermostat, the first motorized damper being installed in each lower level return duct and configured to drive the damper to an open position when the connection means receives a low voltage heating activation signal, wherein the first motorized damper is operatively closed when the thermostat alternatively transmits a low voltage cooling activation signal such that the cooling system substantially receives no air flow through each lower level return air duct and effectively receives only air flow from the upper level of the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.